* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw: (56 commits)
[GFS2] Allow journal recovery on read-only mount
[GFS2] Lockup on error
[GFS2] Fix page_mkwrite truncation race path
[GFS2] Fix typo
[GFS2] Fix write alloc required shortcut calculation
[GFS2] gfs2_alloc_required performance
[GFS2] Remove unneeded i_spin
[GFS2] Reduce inode size by moving i_alloc out of line
[GFS2] Fix assert in log code
[GFS2] Fix problems relating to execution of files on GFS2
[GFS2] Initialize extent_list earlier
[GFS2] Allow page migration for writeback and ordered pages
[GFS2] Remove unused variable
[GFS2] Fix log block mapper
[GFS2] Minor correction
[GFS2] Eliminate the no longer needed sd_statfs_mutex
[GFS2] Incremental patch to fix compiler warning
[GFS2] Function meta_read optimization
[GFS2] Only fetch the dinode once in block_map
[GFS2] Reorganize function gfs2_glmutex_lock
...
gfs2-y := acl.o bmap.o daemon.o dir.o eaops.o eattr.o glock.o \
glops.o inode.o lm.o log.o lops.o locking.o main.o meta_io.o \
mount.o ops_address.o ops_dentry.o ops_export.o ops_file.o \
- ops_fstype.o ops_inode.o ops_super.o ops_vm.o quota.o \
+ ops_fstype.o ops_inode.o ops_super.o quota.o \
recovery.o rgrp.o super.o sys.o trans.o util.o
obj-$(CONFIG_GFS2_FS_LOCKING_NOLOCK) += locking/nolock/
static int gfs2_unstuffer_page(struct gfs2_inode *ip, struct buffer_head *dibh,
u64 block, struct page *page)
{
- struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct inode *inode = &ip->i_inode;
struct buffer_head *bh;
int release = 0;
set_buffer_uptodate(bh);
if (!gfs2_is_jdata(ip))
mark_buffer_dirty(bh);
- if (sdp->sd_args.ar_data == GFS2_DATA_ORDERED || gfs2_is_jdata(ip))
+ if (!gfs2_is_writeback(ip))
gfs2_trans_add_bh(ip->i_gl, bh, 0);
if (release) {
* Returns: errno
*/
-int gfs2_block_map(struct inode *inode, u64 lblock, int create,
- struct buffer_head *bh_map)
+int gfs2_block_map(struct inode *inode, sector_t lblock,
+ struct buffer_head *bh_map, int create)
{
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_sbd *sdp = GFS2_SB(inode);
unsigned int maxlen = bh_map->b_size >> inode->i_blkbits;
struct metapath mp;
u64 size;
+ struct buffer_head *dibh = NULL;
BUG_ON(maxlen == 0);
error = gfs2_meta_inode_buffer(ip, &bh);
if (error)
goto out_fail;
+ dibh = bh;
+ get_bh(dibh);
for (x = 0; x < end_of_metadata; x++) {
lookup_block(ip, bh, x, &mp, create, &new, &dblock);
if (boundary)
set_buffer_boundary(bh_map);
if (new) {
- struct buffer_head *dibh;
- error = gfs2_meta_inode_buffer(ip, &dibh);
- if (!error) {
- gfs2_trans_add_bh(ip->i_gl, dibh, 1);
- gfs2_dinode_out(ip, dibh->b_data);
- brelse(dibh);
- }
+ gfs2_trans_add_bh(ip->i_gl, dibh, 1);
+ gfs2_dinode_out(ip, dibh->b_data);
set_buffer_new(bh_map);
goto out_brelse;
}
out_ok:
error = 0;
out_fail:
+ if (dibh)
+ brelse(dibh);
bmap_unlock(inode, create);
return error;
}
BUG_ON(!new);
bh.b_size = 1 << (inode->i_blkbits + 5);
- ret = gfs2_block_map(inode, lblock, create, &bh);
+ ret = gfs2_block_map(inode, lblock, &bh, create);
*extlen = bh.b_size >> inode->i_blkbits;
*dblock = bh.b_blocknr;
if (buffer_new(&bh))
if (metadata)
revokes = (height) ? sdp->sd_inptrs : sdp->sd_diptrs;
- error = gfs2_rindex_hold(sdp, &ip->i_alloc.al_ri_gh);
+ error = gfs2_rindex_hold(sdp, &ip->i_alloc->al_ri_gh);
if (error)
return error;
out_rlist:
gfs2_rlist_free(&rlist);
out:
- gfs2_glock_dq_uninit(&ip->i_alloc.al_ri_gh);
+ gfs2_glock_dq_uninit(&ip->i_alloc->al_ri_gh);
return error;
}
{
struct inode *inode = mapping->host;
struct gfs2_inode *ip = GFS2_I(inode);
- struct gfs2_sbd *sdp = GFS2_SB(inode);
loff_t from = inode->i_size;
unsigned long index = from >> PAGE_CACHE_SHIFT;
unsigned offset = from & (PAGE_CACHE_SIZE-1);
err = 0;
if (!buffer_mapped(bh)) {
- gfs2_get_block(inode, iblock, bh, 0);
+ gfs2_block_map(inode, iblock, bh, 0);
/* unmapped? It's a hole - nothing to do */
if (!buffer_mapped(bh))
goto unlock;
err = 0;
}
- if (sdp->sd_args.ar_data == GFS2_DATA_ORDERED || gfs2_is_jdata(ip))
+ if (!gfs2_is_writeback(ip))
gfs2_trans_add_bh(ip->i_gl, bh, 0);
zero_user_page(page, offset, length, KM_USER0);
do_div(lblock_stop, bsize);
} else {
unsigned int shift = sdp->sd_sb.sb_bsize_shift;
+ u64 end_of_file = (ip->i_di.di_size + sdp->sd_sb.sb_bsize - 1) >> shift;
lblock = offset >> shift;
lblock_stop = (offset + len + sdp->sd_sb.sb_bsize - 1) >> shift;
+ if (lblock_stop > end_of_file) {
+ *alloc_required = 1;
+ return 0;
+ }
}
for (; lblock < lblock_stop; lblock += extlen) {
struct page;
int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page);
-int gfs2_block_map(struct inode *inode, u64 lblock, int create, struct buffer_head *bh);
+int gfs2_block_map(struct inode *inode, sector_t lblock, struct buffer_head *bh, int create);
int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, unsigned *extlen);
int gfs2_truncatei(struct gfs2_inode *ip, u64 size);
return 0;
}
-/**
- * gfs2_logd - Update log tail as Active Items get flushed to in-place blocks
- * @sdp: Pointer to GFS2 superblock
- *
- * Also, periodically check to make sure that we're using the most recent
- * journal index.
- */
-
-int gfs2_logd(void *data)
-{
- struct gfs2_sbd *sdp = data;
- struct gfs2_holder ji_gh;
- unsigned long t;
- int need_flush;
-
- while (!kthread_should_stop()) {
- /* Advance the log tail */
-
- t = sdp->sd_log_flush_time +
- gfs2_tune_get(sdp, gt_log_flush_secs) * HZ;
-
- gfs2_ail1_empty(sdp, DIO_ALL);
- gfs2_log_lock(sdp);
- need_flush = sdp->sd_log_num_buf > gfs2_tune_get(sdp, gt_incore_log_blocks);
- gfs2_log_unlock(sdp);
- if (need_flush || time_after_eq(jiffies, t)) {
- gfs2_log_flush(sdp, NULL);
- sdp->sd_log_flush_time = jiffies;
- }
-
- /* Check for latest journal index */
-
- t = sdp->sd_jindex_refresh_time +
- gfs2_tune_get(sdp, gt_jindex_refresh_secs) * HZ;
-
- if (time_after_eq(jiffies, t)) {
- if (!gfs2_jindex_hold(sdp, &ji_gh))
- gfs2_glock_dq_uninit(&ji_gh);
- sdp->sd_jindex_refresh_time = jiffies;
- }
-
- t = gfs2_tune_get(sdp, gt_logd_secs) * HZ;
- if (freezing(current))
- refrigerator();
- schedule_timeout_interruptible(t);
- }
-
- return 0;
-}
-
/**
* gfs2_quotad - Write cached quota changes into the quota file
* @sdp: Pointer to GFS2 superblock
int gfs2_glockd(void *data);
int gfs2_recoverd(void *data);
-int gfs2_logd(void *data);
int gfs2_quotad(void *data);
#endif /* __DAEMON_DOT_H__ */
if (error)
goto out;
- error = gfs2_rindex_hold(sdp, &dip->i_alloc.al_ri_gh);
+ error = gfs2_rindex_hold(sdp, &dip->i_alloc->al_ri_gh);
if (error)
goto out_qs;
gfs2_glock_dq_m(rlist.rl_rgrps, rlist.rl_ghs);
out_rlist:
gfs2_rlist_free(&rlist);
- gfs2_glock_dq_uninit(&dip->i_alloc.al_ri_gh);
+ gfs2_glock_dq_uninit(&dip->i_alloc->al_ri_gh);
out_qs:
gfs2_quota_unhold(dip);
out:
return type;
}
-static int user_eo_get(struct gfs2_inode *ip, struct gfs2_ea_request *er)
-{
- struct inode *inode = &ip->i_inode;
- int error = permission(inode, MAY_READ, NULL);
- if (error)
- return error;
-
- return gfs2_ea_get_i(ip, er);
-}
-
-static int user_eo_set(struct gfs2_inode *ip, struct gfs2_ea_request *er)
-{
- struct inode *inode = &ip->i_inode;
-
- if (S_ISREG(inode->i_mode) ||
- (S_ISDIR(inode->i_mode) && !(inode->i_mode & S_ISVTX))) {
- int error = permission(inode, MAY_WRITE, NULL);
- if (error)
- return error;
- } else
- return -EPERM;
-
- return gfs2_ea_set_i(ip, er);
-}
-
-static int user_eo_remove(struct gfs2_inode *ip, struct gfs2_ea_request *er)
-{
- struct inode *inode = &ip->i_inode;
-
- if (S_ISREG(inode->i_mode) ||
- (S_ISDIR(inode->i_mode) && !(inode->i_mode & S_ISVTX))) {
- int error = permission(inode, MAY_WRITE, NULL);
- if (error)
- return error;
- } else
- return -EPERM;
-
- return gfs2_ea_remove_i(ip, er);
-}
-
static int system_eo_get(struct gfs2_inode *ip, struct gfs2_ea_request *er)
{
if (!GFS2_ACL_IS_ACCESS(er->er_name, er->er_name_len) &&
GFS2_ACL_IS_DEFAULT(er->er_name, er->er_name_len)))
return -EOPNOTSUPP;
-
-
return gfs2_ea_get_i(ip, er);
}
return gfs2_ea_remove_i(ip, er);
}
-static int security_eo_get(struct gfs2_inode *ip, struct gfs2_ea_request *er)
-{
- struct inode *inode = &ip->i_inode;
- int error = permission(inode, MAY_READ, NULL);
- if (error)
- return error;
-
- return gfs2_ea_get_i(ip, er);
-}
-
-static int security_eo_set(struct gfs2_inode *ip, struct gfs2_ea_request *er)
-{
- struct inode *inode = &ip->i_inode;
- int error = permission(inode, MAY_WRITE, NULL);
- if (error)
- return error;
-
- return gfs2_ea_set_i(ip, er);
-}
-
-static int security_eo_remove(struct gfs2_inode *ip, struct gfs2_ea_request *er)
-{
- struct inode *inode = &ip->i_inode;
- int error = permission(inode, MAY_WRITE, NULL);
- if (error)
- return error;
-
- return gfs2_ea_remove_i(ip, er);
-}
-
static const struct gfs2_eattr_operations gfs2_user_eaops = {
- .eo_get = user_eo_get,
- .eo_set = user_eo_set,
- .eo_remove = user_eo_remove,
+ .eo_get = gfs2_ea_get_i,
+ .eo_set = gfs2_ea_set_i,
+ .eo_remove = gfs2_ea_remove_i,
.eo_name = "user",
};
};
static const struct gfs2_eattr_operations gfs2_security_eaops = {
- .eo_get = security_eo_get,
- .eo_set = security_eo_set,
- .eo_remove = security_eo_remove,
+ .eo_get = gfs2_ea_get_i,
+ .eo_set = gfs2_ea_set_i,
+ .eo_remove = gfs2_ea_remove_i,
.eo_name = "security",
};
static int ea_dealloc_block(struct gfs2_inode *ip)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_rgrpd *rgd;
struct buffer_head *dibh;
int error;
/*
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
if (atomic_dec_and_test(&gl->gl_ref)) {
hlist_del(&gl->gl_list);
write_unlock(gl_lock_addr(gl->gl_hash));
- BUG_ON(spin_is_locked(&gl->gl_spin));
gfs2_assert(sdp, gl->gl_state == LM_ST_UNLOCKED);
gfs2_assert(sdp, list_empty(&gl->gl_reclaim));
gfs2_assert(sdp, list_empty(&gl->gl_holders));
gl->gl_object = NULL;
gl->gl_sbd = sdp;
gl->gl_aspace = NULL;
- lops_init_le(&gl->gl_le, &gfs2_glock_lops);
INIT_DELAYED_WORK(&gl->gl_work, glock_work_func);
/* If this glock protects actual on-disk data or metadata blocks,
static void gfs2_demote_wake(struct gfs2_glock *gl)
{
- BUG_ON(!spin_is_locked(&gl->gl_spin));
gl->gl_demote_state = LM_ST_EXCLUSIVE;
clear_bit(GLF_DEMOTE, &gl->gl_flags);
smp_mb__after_clear_bit();
static int rq_promote(struct gfs2_holder *gh)
{
struct gfs2_glock *gl = gh->gh_gl;
- struct gfs2_sbd *sdp = gl->gl_sbd;
if (!relaxed_state_ok(gl->gl_state, gh->gh_state, gh->gh_flags)) {
if (list_empty(&gl->gl_holders)) {
gl->gl_req_gh = gh;
set_bit(GLF_LOCK, &gl->gl_flags);
spin_unlock(&gl->gl_spin);
-
- if (atomic_read(&sdp->sd_reclaim_count) >
- gfs2_tune_get(sdp, gt_reclaim_limit) &&
- !(gh->gh_flags & LM_FLAG_PRIORITY)) {
- gfs2_reclaim_glock(sdp);
- gfs2_reclaim_glock(sdp);
- }
-
gfs2_glock_xmote_th(gh->gh_gl, gh);
spin_lock(&gl->gl_spin);
}
gfs2_demote_wake(gl);
return 0;
}
+
set_bit(GLF_LOCK, &gl->gl_flags);
+ set_bit(GLF_DEMOTE_IN_PROGRESS, &gl->gl_flags);
+
if (gl->gl_demote_state == LM_ST_UNLOCKED ||
gl->gl_state != LM_ST_EXCLUSIVE) {
spin_unlock(&gl->gl_spin);
spin_unlock(&gl->gl_spin);
gfs2_glock_xmote_th(gl, NULL);
}
+
spin_lock(&gl->gl_spin);
+ clear_bit(GLF_DEMOTE_IN_PROGRESS, &gl->gl_flags);
return 0;
}
if (!list_empty(&gl->gl_waiters1)) {
gh = list_entry(gl->gl_waiters1.next,
struct gfs2_holder, gh_list);
-
- if (test_bit(HIF_MUTEX, &gh->gh_iflags))
- blocked = rq_mutex(gh);
- else
- gfs2_assert_warn(gl->gl_sbd, 0);
-
+ blocked = rq_mutex(gh);
} else if (test_bit(GLF_DEMOTE, &gl->gl_flags)) {
blocked = rq_demote(gl);
+ if (gl->gl_waiters2 && !blocked) {
+ set_bit(GLF_DEMOTE, &gl->gl_flags);
+ gl->gl_demote_state = LM_ST_UNLOCKED;
+ }
+ gl->gl_waiters2 = 0;
} else if (!list_empty(&gl->gl_waiters3)) {
gh = list_entry(gl->gl_waiters3.next,
struct gfs2_holder, gh_list);
-
- if (test_bit(HIF_PROMOTE, &gh->gh_iflags))
- blocked = rq_promote(gh);
- else
- gfs2_assert_warn(gl->gl_sbd, 0);
-
+ blocked = rq_promote(gh);
} else
break;
static void gfs2_glmutex_lock(struct gfs2_glock *gl)
{
- struct gfs2_holder gh;
-
- gfs2_holder_init(gl, 0, 0, &gh);
- set_bit(HIF_MUTEX, &gh.gh_iflags);
- if (test_and_set_bit(HIF_WAIT, &gh.gh_iflags))
- BUG();
-
spin_lock(&gl->gl_spin);
if (test_and_set_bit(GLF_LOCK, &gl->gl_flags)) {
+ struct gfs2_holder gh;
+
+ gfs2_holder_init(gl, 0, 0, &gh);
+ set_bit(HIF_WAIT, &gh.gh_iflags);
list_add_tail(&gh.gh_list, &gl->gl_waiters1);
+ spin_unlock(&gl->gl_spin);
+ wait_on_holder(&gh);
+ gfs2_holder_uninit(&gh);
} else {
gl->gl_owner_pid = current->pid;
gl->gl_ip = (unsigned long)__builtin_return_address(0);
- clear_bit(HIF_WAIT, &gh.gh_iflags);
- smp_mb();
- wake_up_bit(&gh.gh_iflags, HIF_WAIT);
+ spin_unlock(&gl->gl_spin);
}
- spin_unlock(&gl->gl_spin);
-
- wait_on_holder(&gh);
- gfs2_holder_uninit(&gh);
}
/**
gl->gl_owner_pid = 0;
gl->gl_ip = 0;
run_queue(gl);
- BUG_ON(!spin_is_locked(&gl->gl_spin));
spin_unlock(&gl->gl_spin);
}
}
} else if (gl->gl_demote_state != LM_ST_UNLOCKED &&
gl->gl_demote_state != state) {
- gl->gl_demote_state = LM_ST_UNLOCKED;
+ if (test_bit(GLF_DEMOTE_IN_PROGRESS, &gl->gl_flags))
+ gl->gl_waiters2 = 1;
+ else
+ gl->gl_demote_state = LM_ST_UNLOCKED;
}
spin_unlock(&gl->gl_spin);
}
const struct gfs2_glock_operations *glops = gl->gl_ops;
unsigned int ret;
- if (glops->go_drop_th)
- glops->go_drop_th(gl);
+ if (glops->go_xmote_th)
+ glops->go_xmote_th(gl);
gfs2_assert_warn(sdp, test_bit(GLF_LOCK, &gl->gl_flags));
gfs2_assert_warn(sdp, list_empty(&gl->gl_holders));
return -EIO;
}
- set_bit(HIF_PROMOTE, &gh->gh_iflags);
-
spin_lock(&gl->gl_spin);
add_to_queue(gh);
run_queue(gl);
list_del_init(&gh->gh_list);
if (list_empty(&gl->gl_holders)) {
- spin_unlock(&gl->gl_spin);
-
- if (glops->go_unlock)
+ if (glops->go_unlock) {
+ spin_unlock(&gl->gl_spin);
glops->go_unlock(gh);
-
- spin_lock(&gl->gl_spin);
+ spin_lock(&gl->gl_spin);
+ }
gl->gl_stamp = jiffies;
}
print_dbg(gi, " req_bh = %s\n", (gl->gl_req_bh) ? "yes" : "no");
print_dbg(gi, " lvb_count = %d\n", atomic_read(&gl->gl_lvb_count));
print_dbg(gi, " object = %s\n", (gl->gl_object) ? "yes" : "no");
- print_dbg(gi, " le = %s\n",
- (list_empty(&gl->gl_le.le_list)) ? "no" : "yes");
print_dbg(gi, " reclaim = %s\n",
(list_empty(&gl->gl_reclaim)) ? "no" : "yes");
if (gl->gl_aspace)
bd = list_entry(head->next, struct gfs2_bufdata,
bd_ail_gl_list);
bh = bd->bd_bh;
- gfs2_remove_from_ail(NULL, bd);
+ gfs2_remove_from_ail(bd);
bd->bd_bh = NULL;
bh->b_private = NULL;
bd->bd_blkno = bh->b_blocknr;
if (!ip || !S_ISREG(inode->i_mode))
return;
- if (!test_bit(GIF_PAGED, &ip->i_flags))
- return;
-
unmap_shared_mapping_range(inode->i_mapping, 0, 0);
-
if (test_bit(GIF_SW_PAGED, &ip->i_flags))
set_bit(GLF_DIRTY, &gl->gl_flags);
- clear_bit(GIF_SW_PAGED, &ip->i_flags);
}
/**
static void inode_go_sync(struct gfs2_glock *gl)
{
struct gfs2_inode *ip = gl->gl_object;
+ struct address_space *metamapping = gl->gl_aspace->i_mapping;
+ int error;
+
+ if (gl->gl_state != LM_ST_UNLOCKED)
+ gfs2_pte_inval(gl);
+ if (gl->gl_state != LM_ST_EXCLUSIVE)
+ return;
if (ip && !S_ISREG(ip->i_inode.i_mode))
ip = NULL;
if (test_bit(GLF_DIRTY, &gl->gl_flags)) {
- if (ip && !gfs2_is_jdata(ip))
- filemap_fdatawrite(ip->i_inode.i_mapping);
gfs2_log_flush(gl->gl_sbd, gl);
- if (ip && gfs2_is_jdata(ip))
- filemap_fdatawrite(ip->i_inode.i_mapping);
- gfs2_meta_sync(gl);
+ filemap_fdatawrite(metamapping);
if (ip) {
struct address_space *mapping = ip->i_inode.i_mapping;
- int error = filemap_fdatawait(mapping);
+ filemap_fdatawrite(mapping);
+ error = filemap_fdatawait(mapping);
mapping_set_error(mapping, error);
}
+ error = filemap_fdatawait(metamapping);
+ mapping_set_error(metamapping, error);
clear_bit(GLF_DIRTY, &gl->gl_flags);
gfs2_ail_empty_gl(gl);
}
}
-/**
- * inode_go_xmote_th - promote/demote a glock
- * @gl: the glock
- * @state: the requested state
- * @flags:
- *
- */
-
-static void inode_go_xmote_th(struct gfs2_glock *gl)
-{
- if (gl->gl_state != LM_ST_UNLOCKED)
- gfs2_pte_inval(gl);
- if (gl->gl_state == LM_ST_EXCLUSIVE)
- inode_go_sync(gl);
-}
-
/**
* inode_go_xmote_bh - After promoting/demoting a glock
* @gl: the glock
}
}
-/**
- * inode_go_drop_th - unlock a glock
- * @gl: the glock
- *
- * Invoked from rq_demote().
- * Another node needs the lock in EXCLUSIVE mode, or lock (unused for too long)
- * is being purged from our node's glock cache; we're dropping lock.
- */
-
-static void inode_go_drop_th(struct gfs2_glock *gl)
-{
- gfs2_pte_inval(gl);
- if (gl->gl_state == LM_ST_EXCLUSIVE)
- inode_go_sync(gl);
-}
-
/**
* inode_go_inval - prepare a inode glock to be released
* @gl: the glock
set_bit(GIF_INVALID, &ip->i_flags);
}
- if (ip && S_ISREG(ip->i_inode.i_mode)) {
+ if (ip && S_ISREG(ip->i_inode.i_mode))
truncate_inode_pages(ip->i_inode.i_mapping, 0);
- clear_bit(GIF_PAGED, &ip->i_flags);
- }
}
/**
return error;
}
-/**
- * inode_go_unlock - operation done before an inode lock is unlocked by a
- * process
- * @gl: the glock
- * @flags:
- *
- */
-
-static void inode_go_unlock(struct gfs2_holder *gh)
-{
- struct gfs2_glock *gl = gh->gh_gl;
- struct gfs2_inode *ip = gl->gl_object;
-
- if (ip)
- gfs2_meta_cache_flush(ip);
-}
-
/**
* rgrp_go_demote_ok - Check to see if it's ok to unlock a RG's glock
* @gl: the glock
}
/**
- * trans_go_xmote_th - promote/demote the transaction glock
+ * trans_go_sync - promote/demote the transaction glock
* @gl: the glock
* @state: the requested state
* @flags:
*
*/
-static void trans_go_xmote_th(struct gfs2_glock *gl)
+static void trans_go_sync(struct gfs2_glock *gl)
{
struct gfs2_sbd *sdp = gl->gl_sbd;
if (gl->gl_state != LM_ST_UNLOCKED &&
test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
- gfs2_meta_cache_flush(GFS2_I(sdp->sd_jdesc->jd_inode));
j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
error = gfs2_find_jhead(sdp->sd_jdesc, &head);
}
}
-/**
- * trans_go_drop_th - unlock the transaction glock
- * @gl: the glock
- *
- * We want to sync the device even with localcaching. Remember
- * that localcaching journal replay only marks buffers dirty.
- */
-
-static void trans_go_drop_th(struct gfs2_glock *gl)
-{
- struct gfs2_sbd *sdp = gl->gl_sbd;
-
- if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
- gfs2_meta_syncfs(sdp);
- gfs2_log_shutdown(sdp);
- }
-}
-
/**
* quota_go_demote_ok - Check to see if it's ok to unlock a quota glock
* @gl: the glock
const struct gfs2_glock_operations gfs2_meta_glops = {
.go_xmote_th = meta_go_sync,
- .go_drop_th = meta_go_sync,
.go_type = LM_TYPE_META,
};
const struct gfs2_glock_operations gfs2_inode_glops = {
- .go_xmote_th = inode_go_xmote_th,
+ .go_xmote_th = inode_go_sync,
.go_xmote_bh = inode_go_xmote_bh,
- .go_drop_th = inode_go_drop_th,
.go_inval = inode_go_inval,
.go_demote_ok = inode_go_demote_ok,
.go_lock = inode_go_lock,
- .go_unlock = inode_go_unlock,
.go_type = LM_TYPE_INODE,
.go_min_hold_time = HZ / 10,
};
const struct gfs2_glock_operations gfs2_rgrp_glops = {
.go_xmote_th = meta_go_sync,
- .go_drop_th = meta_go_sync,
.go_inval = meta_go_inval,
.go_demote_ok = rgrp_go_demote_ok,
.go_lock = rgrp_go_lock,
};
const struct gfs2_glock_operations gfs2_trans_glops = {
- .go_xmote_th = trans_go_xmote_th,
+ .go_xmote_th = trans_go_sync,
.go_xmote_bh = trans_go_xmote_bh,
- .go_drop_th = trans_go_drop_th,
.go_type = LM_TYPE_NONDISK,
};
/*
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
struct gfs2_glock_operations {
void (*go_xmote_th) (struct gfs2_glock *gl);
void (*go_xmote_bh) (struct gfs2_glock *gl);
- void (*go_drop_th) (struct gfs2_glock *gl);
void (*go_inval) (struct gfs2_glock *gl, int flags);
int (*go_demote_ok) (struct gfs2_glock *gl);
int (*go_lock) (struct gfs2_holder *gh);
};
enum {
- /* Actions */
- HIF_MUTEX = 0,
- HIF_PROMOTE = 1,
-
/* States */
HIF_HOLDER = 6,
HIF_FIRST = 7,
GLF_DEMOTE = 3,
GLF_PENDING_DEMOTE = 4,
GLF_DIRTY = 5,
+ GLF_DEMOTE_IN_PROGRESS = 6,
+ GLF_LFLUSH = 7,
};
struct gfs2_glock {
struct list_head gl_holders;
struct list_head gl_waiters1; /* HIF_MUTEX */
struct list_head gl_waiters3; /* HIF_PROMOTE */
+ int gl_waiters2; /* GIF_DEMOTE */
const struct gfs2_glock_operations *gl_ops;
struct gfs2_sbd *gl_sbd;
struct inode *gl_aspace;
- struct gfs2_log_element gl_le;
struct list_head gl_ail_list;
atomic_t gl_ail_count;
struct delayed_work gl_work;
enum {
GIF_INVALID = 0,
GIF_QD_LOCKED = 1,
- GIF_PAGED = 2,
GIF_SW_PAGED = 3,
};
struct gfs2_glock *i_gl; /* Move into i_gh? */
struct gfs2_holder i_iopen_gh;
struct gfs2_holder i_gh; /* for prepare/commit_write only */
- struct gfs2_alloc i_alloc;
+ struct gfs2_alloc *i_alloc;
u64 i_last_rg_alloc;
- spinlock_t i_spin;
struct rw_semaphore i_rw_mutex;
- unsigned long i_last_pfault;
-
- struct buffer_head *i_cache[GFS2_MAX_META_HEIGHT];
};
/*
return container_of(inode, struct gfs2_inode, i_inode);
}
-/* To be removed? */
-static inline struct gfs2_sbd *GFS2_SB(struct inode *inode)
+static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
{
return inode->i_sb->s_fs_info;
}
-enum {
- GFF_DID_DIRECT_ALLOC = 0,
- GFF_EXLOCK = 1,
-};
-
struct gfs2_file {
- unsigned long f_flags; /* GFF_... */
struct mutex f_fl_mutex;
struct gfs2_holder f_fl_gh;
};
u64 ai_sync_gen;
};
+struct gfs2_journal_extent {
+ struct list_head extent_list;
+
+ unsigned int lblock; /* First logical block */
+ u64 dblock; /* First disk block */
+ u64 blocks;
+};
+
struct gfs2_jdesc {
struct list_head jd_list;
+ struct list_head extent_list;
struct inode *jd_inode;
unsigned int jd_jid;
struct gfs2_tune {
spinlock_t gt_spin;
- unsigned int gt_ilimit;
- unsigned int gt_ilimit_tries;
- unsigned int gt_ilimit_min;
unsigned int gt_demote_secs; /* Cache retention for unheld glock */
unsigned int gt_incore_log_blocks;
unsigned int gt_log_flush_secs;
- unsigned int gt_jindex_refresh_secs; /* Check for new journal index */
unsigned int gt_recoverd_secs;
unsigned int gt_logd_secs;
unsigned int gt_new_files_jdata;
unsigned int gt_new_files_directio;
unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
- unsigned int gt_lockdump_size;
unsigned int gt_stall_secs; /* Detects trouble! */
unsigned int gt_complain_secs;
- unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
unsigned int gt_statfs_quantum;
unsigned int gt_statfs_slow;
};
/* StatFS stuff */
spinlock_t sd_statfs_spin;
- struct mutex sd_statfs_mutex;
struct gfs2_statfs_change_host sd_statfs_master;
struct gfs2_statfs_change_host sd_statfs_local;
unsigned long sd_statfs_sync_time;
unsigned int sd_log_commited_databuf;
unsigned int sd_log_commited_revoke;
- unsigned int sd_log_num_gl;
unsigned int sd_log_num_buf;
unsigned int sd_log_num_revoke;
unsigned int sd_log_num_rg;
unsigned int sd_log_num_databuf;
- struct list_head sd_log_le_gl;
struct list_head sd_log_le_buf;
struct list_head sd_log_le_revoke;
struct list_head sd_log_le_rg;
struct list_head sd_log_le_databuf;
struct list_head sd_log_le_ordered;
- unsigned int sd_log_blks_free;
+ atomic_t sd_log_blks_free;
struct mutex sd_log_reserve_mutex;
u64 sd_log_sequence;
#include "log.h"
#include "meta_io.h"
#include "ops_address.h"
-#include "ops_file.h"
#include "ops_inode.h"
#include "quota.h"
#include "rgrp.h"
void gfs2_set_iop(struct inode *inode)
{
+ struct gfs2_sbd *sdp = GFS2_SB(inode);
umode_t mode = inode->i_mode;
if (S_ISREG(mode)) {
inode->i_op = &gfs2_file_iops;
- inode->i_fop = &gfs2_file_fops;
- inode->i_mapping->a_ops = &gfs2_file_aops;
+ if (sdp->sd_args.ar_localflocks)
+ inode->i_fop = &gfs2_file_fops_nolock;
+ else
+ inode->i_fop = &gfs2_file_fops;
} else if (S_ISDIR(mode)) {
inode->i_op = &gfs2_dir_iops;
- inode->i_fop = &gfs2_dir_fops;
+ if (sdp->sd_args.ar_localflocks)
+ inode->i_fop = &gfs2_dir_fops_nolock;
+ else
+ inode->i_fop = &gfs2_dir_fops;
} else if (S_ISLNK(mode)) {
inode->i_op = &gfs2_symlink_iops;
} else {
di->di_entries = be32_to_cpu(str->di_entries);
di->di_eattr = be64_to_cpu(str->di_eattr);
- return 0;
-}
+ if (S_ISREG(ip->i_inode.i_mode))
+ gfs2_set_aops(&ip->i_inode);
-static void gfs2_inode_bh(struct gfs2_inode *ip, struct buffer_head *bh)
-{
- ip->i_cache[0] = bh;
+ return 0;
}
/**
if (error)
goto out_rg_gunlock;
- gfs2_trans_add_gl(ip->i_gl);
+ set_bit(GLF_DIRTY, &ip->i_gl->gl_flags);
+ set_bit(GLF_LFLUSH, &ip->i_gl->gl_flags);
gfs2_free_di(rgd, ip);
struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
int error;
- gfs2_alloc_get(dip);
+ if (gfs2_alloc_get(dip) == NULL)
+ return -ENOMEM;
- dip->i_alloc.al_requested = RES_DINODE;
+ dip->i_alloc->al_requested = RES_DINODE;
error = gfs2_inplace_reserve(dip);
if (error)
goto out;
error = alloc_required = gfs2_diradd_alloc_required(&dip->i_inode, name);
if (alloc_required < 0)
- goto fail;
+ goto fail_quota_locks;
if (alloc_required) {
error = gfs2_quota_check(dip, dip->i_inode.i_uid, dip->i_inode.i_gid);
if (error)
gfs2_trans_end(sdp);
fail_ipreserv:
- if (dip->i_alloc.al_rgd)
+ if (dip->i_alloc->al_rgd)
gfs2_inplace_release(dip);
fail_quota_locks:
struct gfs2_inum_host inum = { .no_addr = 0, .no_formal_ino = 0 };
int error;
u64 generation;
- struct buffer_head *bh=NULL;
+ struct buffer_head *bh = NULL;
if (!name->len || name->len > GFS2_FNAMESIZE)
return ERR_PTR(-ENAMETOOLONG);
if (IS_ERR(inode))
goto fail_gunlock2;
- gfs2_inode_bh(GFS2_I(inode), bh);
-
error = gfs2_inode_refresh(GFS2_I(inode));
if (error)
goto fail_gunlock2;
if (error)
goto fail_gunlock2;
+ if (bh)
+ brelse(bh);
if (!inode)
return ERR_PTR(-ENOMEM);
return inode;
fail_gunlock:
gfs2_glock_dq(ghs);
fail:
+ if (bh)
+ brelse(bh);
return ERR_PTR(error);
}
return ip->i_di.di_flags & GFS2_DIF_JDATA;
}
+static inline int gfs2_is_writeback(const struct gfs2_inode *ip)
+{
+ const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
+ return (sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK) && !gfs2_is_jdata(ip);
+}
+
+static inline int gfs2_is_ordered(const struct gfs2_inode *ip)
+{
+ const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
+ return (sdp->sd_args.ar_data == GFS2_DATA_ORDERED) && !gfs2_is_jdata(ip);
+}
+
static inline int gfs2_is_dir(const struct gfs2_inode *ip)
{
return S_ISDIR(ip->i_inode.i_mode);
memset(data, 0, 256);
strncpy(data, data_arg, 255);
+ if (!strlen(data)) {
+ log_error("no mount options, (u)mount helpers not installed");
+ return -EINVAL;
+ }
+
for (options = data; (x = strsep(&options, ":")); ) {
if (!*x)
continue;
op->info.number = name->ln_number;
op->info.start = fl->fl_start;
op->info.end = fl->fl_end;
- op->info.owner = (__u64)(long) fl->fl_owner;
if (fl->fl_lmops && fl->fl_lmops->fl_grant) {
+ /* fl_owner is lockd which doesn't distinguish
+ processes on the nfs client */
+ op->info.owner = (__u64) fl->fl_pid;
xop->callback = fl->fl_lmops->fl_grant;
locks_init_lock(&xop->flc);
locks_copy_lock(&xop->flc, fl);
xop->fl = fl;
xop->file = file;
- } else
+ } else {
+ op->info.owner = (__u64)(long) fl->fl_owner;
xop->callback = NULL;
+ }
send_op(op);
op->info.number = name->ln_number;
op->info.start = fl->fl_start;
op->info.end = fl->fl_end;
- op->info.owner = (__u64)(long) fl->fl_owner;
+ if (fl->fl_lmops && fl->fl_lmops->fl_grant)
+ op->info.owner = (__u64) fl->fl_pid;
+ else
+ op->info.owner = (__u64)(long) fl->fl_owner;
send_op(op);
wait_event(recv_wq, (op->done != 0));
op->info.number = name->ln_number;
op->info.start = fl->fl_start;
op->info.end = fl->fl_end;
- op->info.owner = (__u64)(long) fl->fl_owner;
+ if (fl->fl_lmops && fl->fl_lmops->fl_grant)
+ op->info.owner = (__u64) fl->fl_pid;
+ else
+ op->info.owner = (__u64)(long) fl->fl_owner;
send_op(op);
wait_event(recv_wq, (op->done != 0));
struct gdlm_ls *ls = (struct gdlm_ls *) data;
struct gdlm_lock *lp = NULL;
uint8_t complete, blocking, submit, drop;
- DECLARE_WAITQUEUE(wait, current);
/* Only thread1 is allowed to do blocking callbacks since gfs
may wait for a completion callback within a blocking cb. */
while (!kthread_should_stop()) {
- set_current_state(TASK_INTERRUPTIBLE);
- add_wait_queue(&ls->thread_wait, &wait);
- if (no_work(ls, blist))
- schedule();
- remove_wait_queue(&ls->thread_wait, &wait);
- set_current_state(TASK_RUNNING);
+ wait_event_interruptible(ls->thread_wait,
+ !no_work(ls, blist) || kthread_should_stop());
complete = blocking = submit = drop = 0;
/*
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
#include <linux/crc32.h>
#include <linux/lm_interface.h>
#include <linux/delay.h>
+#include <linux/kthread.h>
+#include <linux/freezer.h>
#include "gfs2.h"
#include "incore.h"
*
*/
-void gfs2_remove_from_ail(struct address_space *mapping, struct gfs2_bufdata *bd)
+void gfs2_remove_from_ail(struct gfs2_bufdata *bd)
{
bd->bd_ail = NULL;
list_del_init(&bd->bd_ail_st_list);
list_del_init(&bd->bd_ail_gl_list);
atomic_dec(&bd->bd_gl->gl_ail_count);
- if (mapping)
- gfs2_meta_cache_flush(GFS2_I(mapping->host));
brelse(bd->bd_bh);
}
struct buffer_head *bh;
int retry;
- BUG_ON(!spin_is_locked(&sdp->sd_log_lock));
-
do {
retry = 0;
gfs2_log_unlock(sdp);
}
-int gfs2_ail1_empty(struct gfs2_sbd *sdp, int flags)
+static int gfs2_ail1_empty(struct gfs2_sbd *sdp, int flags)
{
struct gfs2_ail *ai, *s;
int ret;
bd = list_entry(head->prev, struct gfs2_bufdata,
bd_ail_st_list);
gfs2_assert(sdp, bd->bd_ail == ai);
- gfs2_remove_from_ail(bd->bd_bh->b_page->mapping, bd);
+ gfs2_remove_from_ail(bd);
}
}
mutex_lock(&sdp->sd_log_reserve_mutex);
gfs2_log_lock(sdp);
- while(sdp->sd_log_blks_free <= (blks + reserved_blks)) {
+ while(atomic_read(&sdp->sd_log_blks_free) <= (blks + reserved_blks)) {
gfs2_log_unlock(sdp);
gfs2_ail1_empty(sdp, 0);
gfs2_log_flush(sdp, NULL);
gfs2_ail1_start(sdp, 0);
gfs2_log_lock(sdp);
}
- sdp->sd_log_blks_free -= blks;
+ atomic_sub(blks, &sdp->sd_log_blks_free);
gfs2_log_unlock(sdp);
mutex_unlock(&sdp->sd_log_reserve_mutex);
{
gfs2_log_lock(sdp);
- sdp->sd_log_blks_free += blks;
+ atomic_add(blks, &sdp->sd_log_blks_free);
gfs2_assert_withdraw(sdp,
- sdp->sd_log_blks_free <= sdp->sd_jdesc->jd_blocks);
+ atomic_read(&sdp->sd_log_blks_free) <= sdp->sd_jdesc->jd_blocks);
gfs2_log_unlock(sdp);
up_read(&sdp->sd_log_flush_lock);
}
static u64 log_bmap(struct gfs2_sbd *sdp, unsigned int lbn)
{
- struct inode *inode = sdp->sd_jdesc->jd_inode;
- int error;
- struct buffer_head bh_map = { .b_state = 0, .b_blocknr = 0 };
-
- bh_map.b_size = 1 << inode->i_blkbits;
- error = gfs2_block_map(inode, lbn, 0, &bh_map);
- if (error || !bh_map.b_blocknr)
- printk(KERN_INFO "error=%d, dbn=%llu lbn=%u", error,
- (unsigned long long)bh_map.b_blocknr, lbn);
- gfs2_assert_withdraw(sdp, !error && bh_map.b_blocknr);
-
- return bh_map.b_blocknr;
+ struct gfs2_journal_extent *je;
+
+ list_for_each_entry(je, &sdp->sd_jdesc->extent_list, extent_list) {
+ if (lbn >= je->lblock && lbn < je->lblock + je->blocks)
+ return je->dblock + lbn - je->lblock;
+ }
+
+ return -1;
}
/**
ail2_empty(sdp, new_tail);
gfs2_log_lock(sdp);
- sdp->sd_log_blks_free += dist;
- gfs2_assert_withdraw(sdp, sdp->sd_log_blks_free <= sdp->sd_jdesc->jd_blocks);
+ atomic_add(dist, &sdp->sd_log_blks_free);
+ gfs2_assert_withdraw(sdp, atomic_read(&sdp->sd_log_blks_free) <= sdp->sd_jdesc->jd_blocks);
gfs2_log_unlock(sdp);
sdp->sd_log_tail = new_tail;
get_bh(bh);
gfs2_log_unlock(sdp);
lock_buffer(bh);
- if (test_clear_buffer_dirty(bh)) {
+ if (buffer_mapped(bh) && test_clear_buffer_dirty(bh)) {
bh->b_end_io = end_buffer_write_sync;
submit_bh(WRITE, bh);
} else {
*
*/
-void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
+void __gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
{
struct gfs2_ail *ai;
down_write(&sdp->sd_log_flush_lock);
- if (gl) {
- gfs2_log_lock(sdp);
- if (list_empty(&gl->gl_le.le_list)) {
- gfs2_log_unlock(sdp);
- up_write(&sdp->sd_log_flush_lock);
- return;
- }
- gfs2_log_unlock(sdp);
+ /* Log might have been flushed while we waited for the flush lock */
+ if (gl && !test_bit(GLF_LFLUSH, &gl->gl_flags)) {
+ up_write(&sdp->sd_log_flush_lock);
+ return;
}
ai = kzalloc(sizeof(struct gfs2_ail), GFP_NOFS | __GFP_NOFAIL);
log_flush_commit(sdp);
else if (sdp->sd_log_tail != current_tail(sdp) && !sdp->sd_log_idle){
gfs2_log_lock(sdp);
- sdp->sd_log_blks_free--; /* Adjust for unreserved buffer */
+ atomic_dec(&sdp->sd_log_blks_free); /* Adjust for unreserved buffer */
gfs2_log_unlock(sdp);
log_write_header(sdp, 0, PULL);
}
static void log_refund(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
{
unsigned int reserved;
- unsigned int old;
+ unsigned int unused;
gfs2_log_lock(sdp);
sdp->sd_log_commited_revoke += tr->tr_num_revoke - tr->tr_num_revoke_rm;
gfs2_assert_withdraw(sdp, ((int)sdp->sd_log_commited_revoke) >= 0);
reserved = calc_reserved(sdp);
- old = sdp->sd_log_blks_free;
- sdp->sd_log_blks_free += tr->tr_reserved -
- (reserved - sdp->sd_log_blks_reserved);
-
- gfs2_assert_withdraw(sdp, sdp->sd_log_blks_free >= old);
- gfs2_assert_withdraw(sdp, sdp->sd_log_blks_free <=
+ unused = sdp->sd_log_blks_reserved - reserved + tr->tr_reserved;
+ gfs2_assert_withdraw(sdp, unused >= 0);
+ atomic_add(unused, &sdp->sd_log_blks_free);
+ gfs2_assert_withdraw(sdp, atomic_read(&sdp->sd_log_blks_free) <=
sdp->sd_jdesc->jd_blocks);
-
sdp->sd_log_blks_reserved = reserved;
gfs2_log_unlock(sdp);
down_write(&sdp->sd_log_flush_lock);
gfs2_assert_withdraw(sdp, !sdp->sd_log_blks_reserved);
- gfs2_assert_withdraw(sdp, !sdp->sd_log_num_gl);
gfs2_assert_withdraw(sdp, !sdp->sd_log_num_buf);
gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke);
gfs2_assert_withdraw(sdp, !sdp->sd_log_num_rg);
log_write_header(sdp, GFS2_LOG_HEAD_UNMOUNT,
(sdp->sd_log_tail == current_tail(sdp)) ? 0 : PULL);
- gfs2_assert_warn(sdp, sdp->sd_log_blks_free == sdp->sd_jdesc->jd_blocks);
+ gfs2_assert_warn(sdp, atomic_read(&sdp->sd_log_blks_free) == sdp->sd_jdesc->jd_blocks);
gfs2_assert_warn(sdp, sdp->sd_log_head == sdp->sd_log_tail);
gfs2_assert_warn(sdp, list_empty(&sdp->sd_ail2_list));
}
}
+
+/**
+ * gfs2_logd - Update log tail as Active Items get flushed to in-place blocks
+ * @sdp: Pointer to GFS2 superblock
+ *
+ * Also, periodically check to make sure that we're using the most recent
+ * journal index.
+ */
+
+int gfs2_logd(void *data)
+{
+ struct gfs2_sbd *sdp = data;
+ unsigned long t;
+ int need_flush;
+
+ while (!kthread_should_stop()) {
+ /* Advance the log tail */
+
+ t = sdp->sd_log_flush_time +
+ gfs2_tune_get(sdp, gt_log_flush_secs) * HZ;
+
+ gfs2_ail1_empty(sdp, DIO_ALL);
+ gfs2_log_lock(sdp);
+ need_flush = sdp->sd_log_num_buf > gfs2_tune_get(sdp, gt_incore_log_blocks);
+ gfs2_log_unlock(sdp);
+ if (need_flush || time_after_eq(jiffies, t)) {
+ gfs2_log_flush(sdp, NULL);
+ sdp->sd_log_flush_time = jiffies;
+ }
+
+ t = gfs2_tune_get(sdp, gt_logd_secs) * HZ;
+ if (freezing(current))
+ refrigerator();
+ schedule_timeout_interruptible(t);
+ }
+
+ return 0;
+}
+
unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct,
unsigned int ssize);
-int gfs2_ail1_empty(struct gfs2_sbd *sdp, int flags);
-
int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks);
void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks);
void gfs2_log_incr_head(struct gfs2_sbd *sdp);
struct buffer_head *gfs2_log_get_buf(struct gfs2_sbd *sdp);
struct buffer_head *gfs2_log_fake_buf(struct gfs2_sbd *sdp,
struct buffer_head *real);
-void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl);
+void __gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl);
+
+static inline void gfs2_log_flush(struct gfs2_sbd *sbd, struct gfs2_glock *gl)
+{
+ if (!gl || test_bit(GLF_LFLUSH, &gl->gl_flags))
+ __gfs2_log_flush(sbd, gl);
+}
+
void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans);
-void gfs2_remove_from_ail(struct address_space *mapping, struct gfs2_bufdata *bd);
+void gfs2_remove_from_ail(struct gfs2_bufdata *bd);
void gfs2_log_shutdown(struct gfs2_sbd *sdp);
void gfs2_meta_syncfs(struct gfs2_sbd *sdp);
+int gfs2_logd(void *data);
#endif /* __LOG_DOT_H__ */
}
bd->bd_ail = ai;
list_add(&bd->bd_ail_st_list, &ai->ai_ail1_list);
+ clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
gfs2_log_unlock(sdp);
unlock_buffer(bh);
}
return bh;
}
-static void __glock_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
-{
- struct gfs2_glock *gl;
- struct gfs2_trans *tr = current->journal_info;
-
- tr->tr_touched = 1;
-
- gl = container_of(le, struct gfs2_glock, gl_le);
- if (gfs2_assert_withdraw(sdp, gfs2_glock_is_held_excl(gl)))
- return;
-
- if (!list_empty(&le->le_list))
- return;
-
- gfs2_glock_hold(gl);
- set_bit(GLF_DIRTY, &gl->gl_flags);
- sdp->sd_log_num_gl++;
- list_add(&le->le_list, &sdp->sd_log_le_gl);
-}
-
-static void glock_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
-{
- gfs2_log_lock(sdp);
- __glock_lo_add(sdp, le);
- gfs2_log_unlock(sdp);
-}
-
-static void glock_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
-{
- struct list_head *head = &sdp->sd_log_le_gl;
- struct gfs2_glock *gl;
-
- while (!list_empty(head)) {
- gl = list_entry(head->next, struct gfs2_glock, gl_le.le_list);
- list_del_init(&gl->gl_le.le_list);
- sdp->sd_log_num_gl--;
-
- gfs2_assert_withdraw(sdp, gfs2_glock_is_held_excl(gl));
- gfs2_glock_put(gl);
- }
- gfs2_assert_warn(sdp, !sdp->sd_log_num_gl);
-}
-
static void buf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
{
struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le);
list_add(&bd->bd_list_tr, &tr->tr_list_buf);
if (!list_empty(&le->le_list))
goto out;
- __glock_lo_add(sdp, &bd->bd_gl->gl_le);
+ set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
+ set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags);
gfs2_meta_check(sdp, bd->bd_bh);
gfs2_pin(sdp, bd->bd_bh);
sdp->sd_log_num_buf++;
lock_buffer(bd->bd_bh);
gfs2_log_lock(sdp);
- if (!list_empty(&bd->bd_list_tr))
- goto out;
- tr->tr_touched = 1;
- if (gfs2_is_jdata(ip)) {
- tr->tr_num_buf++;
- list_add(&bd->bd_list_tr, &tr->tr_list_buf);
+ if (tr) {
+ if (!list_empty(&bd->bd_list_tr))
+ goto out;
+ tr->tr_touched = 1;
+ if (gfs2_is_jdata(ip)) {
+ tr->tr_num_buf++;
+ list_add(&bd->bd_list_tr, &tr->tr_list_buf);
+ }
}
if (!list_empty(&le->le_list))
goto out;
- __glock_lo_add(sdp, &bd->bd_gl->gl_le);
+ set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
+ set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags);
if (gfs2_is_jdata(ip)) {
gfs2_pin(sdp, bd->bd_bh);
tr->tr_num_databuf_new++;
}
-const struct gfs2_log_operations gfs2_glock_lops = {
- .lo_add = glock_lo_add,
- .lo_after_commit = glock_lo_after_commit,
- .lo_name = "glock",
-};
-
const struct gfs2_log_operations gfs2_buf_lops = {
.lo_add = buf_lo_add,
.lo_incore_commit = buf_lo_incore_commit,
};
const struct gfs2_log_operations *gfs2_log_ops[] = {
- &gfs2_glock_lops,
&gfs2_databuf_lops,
&gfs2_buf_lops,
&gfs2_rg_lops,
struct gfs2_inode *ip = foo;
inode_init_once(&ip->i_inode);
- spin_lock_init(&ip->i_spin);
init_rwsem(&ip->i_rw_mutex);
- memset(ip->i_cache, 0, sizeof(ip->i_cache));
+ ip->i_alloc = NULL;
}
static void gfs2_init_glock_once(struct kmem_cache *cachep, void *foo)
static const struct address_space_operations aspace_aops = {
.writepage = gfs2_aspace_writepage,
.releasepage = gfs2_releasepage,
+ .sync_page = block_sync_page,
};
/**
struct buffer_head **bhp)
{
*bhp = getbuf(gl, blkno, CREATE);
- if (!buffer_uptodate(*bhp))
+ if (!buffer_uptodate(*bhp)) {
ll_rw_block(READ_META, 1, bhp);
- if (flags & DIO_WAIT) {
- int error = gfs2_meta_wait(gl->gl_sbd, *bhp);
- if (error) {
- brelse(*bhp);
- return error;
+ if (flags & DIO_WAIT) {
+ int error = gfs2_meta_wait(gl->gl_sbd, *bhp);
+ if (error) {
+ brelse(*bhp);
+ return error;
+ }
}
}
return;
}
- bd = kmem_cache_zalloc(gfs2_bufdata_cachep, GFP_NOFS | __GFP_NOFAIL),
+ bd = kmem_cache_zalloc(gfs2_bufdata_cachep, GFP_NOFS | __GFP_NOFAIL);
bd->bd_bh = bh;
bd->bd_gl = gl;
}
if (bd) {
if (bd->bd_ail) {
- gfs2_remove_from_ail(NULL, bd);
+ gfs2_remove_from_ail(bd);
bh->b_private = NULL;
bd->bd_bh = NULL;
bd->bd_blkno = bh->b_blocknr;
}
}
-/**
- * gfs2_meta_cache_flush - get rid of any references on buffers for this inode
- * @ip: The GFS2 inode
- *
- * This releases buffers that are in the most-recently-used array of
- * blocks used for indirect block addressing for this inode.
- */
-
-void gfs2_meta_cache_flush(struct gfs2_inode *ip)
-{
- struct buffer_head **bh_slot;
- unsigned int x;
-
- spin_lock(&ip->i_spin);
-
- for (x = 0; x < GFS2_MAX_META_HEIGHT; x++) {
- bh_slot = &ip->i_cache[x];
- if (*bh_slot) {
- brelse(*bh_slot);
- *bh_slot = NULL;
- }
- }
-
- spin_unlock(&ip->i_spin);
-}
-
/**
* gfs2_meta_indirect_buffer - Get a metadata buffer
* @ip: The GFS2 inode
* @new: Non-zero if we may create a new buffer
* @bhp: the buffer is returned here
*
- * Try to use the gfs2_inode's MRU metadata tree cache.
- *
* Returns: errno
*/
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_glock *gl = ip->i_gl;
- struct buffer_head *bh = NULL, **bh_slot = ip->i_cache + height;
- int in_cache = 0;
-
- BUG_ON(!gl);
- BUG_ON(!sdp);
-
- spin_lock(&ip->i_spin);
- if (*bh_slot && (*bh_slot)->b_blocknr == num) {
- bh = *bh_slot;
- get_bh(bh);
- in_cache = 1;
- }
- spin_unlock(&ip->i_spin);
-
- if (!bh)
- bh = getbuf(gl, num, CREATE);
-
- if (!bh)
- return -ENOBUFS;
+ struct buffer_head *bh;
+ int ret = 0;
if (new) {
- if (gfs2_assert_warn(sdp, height))
- goto err;
- meta_prep_new(bh);
+ BUG_ON(height == 0);
+ bh = gfs2_meta_new(gl, num);
gfs2_trans_add_bh(ip->i_gl, bh, 1);
gfs2_metatype_set(bh, GFS2_METATYPE_IN, GFS2_FORMAT_IN);
gfs2_buffer_clear_tail(bh, sizeof(struct gfs2_meta_header));
} else {
u32 mtype = height ? GFS2_METATYPE_IN : GFS2_METATYPE_DI;
- if (!buffer_uptodate(bh)) {
- ll_rw_block(READ_META, 1, &bh);
- if (gfs2_meta_wait(sdp, bh))
- goto err;
+ ret = gfs2_meta_read(gl, num, DIO_WAIT, &bh);
+ if (ret == 0 && gfs2_metatype_check(sdp, bh, mtype)) {
+ brelse(bh);
+ ret = -EIO;
}
- if (gfs2_metatype_check(sdp, bh, mtype))
- goto err;
- }
-
- if (!in_cache) {
- spin_lock(&ip->i_spin);
- if (*bh_slot)
- brelse(*bh_slot);
- *bh_slot = bh;
- get_bh(bh);
- spin_unlock(&ip->i_spin);
}
-
*bhp = bh;
- return 0;
-err:
- brelse(bh);
- return -EIO;
+ return ret;
}
/**
void gfs2_meta_wipe(struct gfs2_inode *ip, u64 bstart, u32 blen);
-void gfs2_meta_cache_flush(struct gfs2_inode *ip);
int gfs2_meta_indirect_buffer(struct gfs2_inode *ip, int height, u64 num,
int new, struct buffer_head **bhp);
#include <linux/swap.h>
#include <linux/gfs2_ondisk.h>
#include <linux/lm_interface.h>
+#include <linux/backing-dev.h>
+#include <linux/pagevec.h>
#include "gfs2.h"
#include "incore.h"
#include "quota.h"
#include "trans.h"
#include "rgrp.h"
-#include "ops_file.h"
#include "super.h"
#include "util.h"
#include "glops.h"
}
}
-/**
- * gfs2_get_block - Fills in a buffer head with details about a block
- * @inode: The inode
- * @lblock: The block number to look up
- * @bh_result: The buffer head to return the result in
- * @create: Non-zero if we may add block to the file
- *
- * Returns: errno
- */
-
-int gfs2_get_block(struct inode *inode, sector_t lblock,
- struct buffer_head *bh_result, int create)
-{
- return gfs2_block_map(inode, lblock, create, bh_result);
-}
-
/**
* gfs2_get_block_noalloc - Fills in a buffer head with details about a block
* @inode: The inode
{
int error;
- error = gfs2_block_map(inode, lblock, 0, bh_result);
+ error = gfs2_block_map(inode, lblock, bh_result, 0);
if (error)
return error;
if (!buffer_mapped(bh_result))
static int gfs2_get_block_direct(struct inode *inode, sector_t lblock,
struct buffer_head *bh_result, int create)
{
- return gfs2_block_map(inode, lblock, 0, bh_result);
+ return gfs2_block_map(inode, lblock, bh_result, 0);
}
/**
- * gfs2_writepage - Write complete page
- * @page: Page to write
+ * gfs2_writepage_common - Common bits of writepage
+ * @page: The page to be written
+ * @wbc: The writeback control
*
- * Returns: errno
- *
- * Some of this is copied from block_write_full_page() although we still
- * call it to do most of the work.
+ * Returns: 1 if writepage is ok, otherwise an error code or zero if no error.
*/
-static int gfs2_writepage(struct page *page, struct writeback_control *wbc)
+static int gfs2_writepage_common(struct page *page,
+ struct writeback_control *wbc)
{
struct inode *inode = page->mapping->host;
struct gfs2_inode *ip = GFS2_I(inode);
loff_t i_size = i_size_read(inode);
pgoff_t end_index = i_size >> PAGE_CACHE_SHIFT;
unsigned offset;
- int error;
- int done_trans = 0;
+ int ret = -EIO;
- if (gfs2_assert_withdraw(sdp, gfs2_glock_is_held_excl(ip->i_gl))) {
- unlock_page(page);
- return -EIO;
- }
+ if (gfs2_assert_withdraw(sdp, gfs2_glock_is_held_excl(ip->i_gl)))
+ goto out;
+ ret = 0;
if (current->journal_info)
- goto out_ignore;
-
+ goto redirty;
/* Is the page fully outside i_size? (truncate in progress) */
- offset = i_size & (PAGE_CACHE_SIZE-1);
+ offset = i_size & (PAGE_CACHE_SIZE-1);
if (page->index > end_index || (page->index == end_index && !offset)) {
page->mapping->a_ops->invalidatepage(page, 0);
- unlock_page(page);
- return 0; /* don't care */
+ goto out;
+ }
+ return 1;
+redirty:
+ redirty_page_for_writepage(wbc, page);
+out:
+ unlock_page(page);
+ return 0;
+}
+
+/**
+ * gfs2_writeback_writepage - Write page for writeback mappings
+ * @page: The page
+ * @wbc: The writeback control
+ *
+ */
+
+static int gfs2_writeback_writepage(struct page *page,
+ struct writeback_control *wbc)
+{
+ int ret;
+
+ ret = gfs2_writepage_common(page, wbc);
+ if (ret <= 0)
+ return ret;
+
+ ret = mpage_writepage(page, gfs2_get_block_noalloc, wbc);
+ if (ret == -EAGAIN)
+ ret = block_write_full_page(page, gfs2_get_block_noalloc, wbc);
+ return ret;
+}
+
+/**
+ * gfs2_ordered_writepage - Write page for ordered data files
+ * @page: The page to write
+ * @wbc: The writeback control
+ *
+ */
+
+static int gfs2_ordered_writepage(struct page *page,
+ struct writeback_control *wbc)
+{
+ struct inode *inode = page->mapping->host;
+ struct gfs2_inode *ip = GFS2_I(inode);
+ int ret;
+
+ ret = gfs2_writepage_common(page, wbc);
+ if (ret <= 0)
+ return ret;
+
+ if (!page_has_buffers(page)) {
+ create_empty_buffers(page, inode->i_sb->s_blocksize,
+ (1 << BH_Dirty)|(1 << BH_Uptodate));
}
+ gfs2_page_add_databufs(ip, page, 0, inode->i_sb->s_blocksize-1);
+ return block_write_full_page(page, gfs2_get_block_noalloc, wbc);
+}
- if ((sdp->sd_args.ar_data == GFS2_DATA_ORDERED || gfs2_is_jdata(ip)) &&
- PageChecked(page)) {
+/**
+ * __gfs2_jdata_writepage - The core of jdata writepage
+ * @page: The page to write
+ * @wbc: The writeback control
+ *
+ * This is shared between writepage and writepages and implements the
+ * core of the writepage operation. If a transaction is required then
+ * PageChecked will have been set and the transaction will have
+ * already been started before this is called.
+ */
+
+static int __gfs2_jdata_writepage(struct page *page, struct writeback_control *wbc)
+{
+ struct inode *inode = page->mapping->host;
+ struct gfs2_inode *ip = GFS2_I(inode);
+ struct gfs2_sbd *sdp = GFS2_SB(inode);
+
+ if (PageChecked(page)) {
ClearPageChecked(page);
- error = gfs2_trans_begin(sdp, RES_DINODE + 1, 0);
- if (error)
- goto out_ignore;
if (!page_has_buffers(page)) {
create_empty_buffers(page, inode->i_sb->s_blocksize,
(1 << BH_Dirty)|(1 << BH_Uptodate));
}
gfs2_page_add_databufs(ip, page, 0, sdp->sd_vfs->s_blocksize-1);
+ }
+ return block_write_full_page(page, gfs2_get_block_noalloc, wbc);
+}
+
+/**
+ * gfs2_jdata_writepage - Write complete page
+ * @page: Page to write
+ *
+ * Returns: errno
+ *
+ */
+
+static int gfs2_jdata_writepage(struct page *page, struct writeback_control *wbc)
+{
+ struct inode *inode = page->mapping->host;
+ struct gfs2_sbd *sdp = GFS2_SB(inode);
+ int error;
+ int done_trans = 0;
+
+ error = gfs2_writepage_common(page, wbc);
+ if (error <= 0)
+ return error;
+
+ if (PageChecked(page)) {
+ if (wbc->sync_mode != WB_SYNC_ALL)
+ goto out_ignore;
+ error = gfs2_trans_begin(sdp, RES_DINODE + 1, 0);
+ if (error)
+ goto out_ignore;
done_trans = 1;
}
- error = block_write_full_page(page, gfs2_get_block_noalloc, wbc);
+ error = __gfs2_jdata_writepage(page, wbc);
if (done_trans)
gfs2_trans_end(sdp);
- gfs2_meta_cache_flush(ip);
return error;
out_ignore:
}
/**
- * gfs2_writepages - Write a bunch of dirty pages back to disk
+ * gfs2_writeback_writepages - Write a bunch of dirty pages back to disk
* @mapping: The mapping to write
* @wbc: Write-back control
*
- * For journaled files and/or ordered writes this just falls back to the
- * kernel's default writepages path for now. We will probably want to change
- * that eventually (i.e. when we look at allocate on flush).
- *
- * For the data=writeback case though we can already ignore buffer heads
+ * For the data=writeback case we can already ignore buffer heads
* and write whole extents at once. This is a big reduction in the
* number of I/O requests we send and the bmap calls we make in this case.
*/
-static int gfs2_writepages(struct address_space *mapping,
- struct writeback_control *wbc)
+static int gfs2_writeback_writepages(struct address_space *mapping,
+ struct writeback_control *wbc)
+{
+ return mpage_writepages(mapping, wbc, gfs2_get_block_noalloc);
+}
+
+/**
+ * gfs2_write_jdata_pagevec - Write back a pagevec's worth of pages
+ * @mapping: The mapping
+ * @wbc: The writeback control
+ * @writepage: The writepage function to call for each page
+ * @pvec: The vector of pages
+ * @nr_pages: The number of pages to write
+ *
+ * Returns: non-zero if loop should terminate, zero otherwise
+ */
+
+static int gfs2_write_jdata_pagevec(struct address_space *mapping,
+ struct writeback_control *wbc,
+ struct pagevec *pvec,
+ int nr_pages, pgoff_t end)
{
struct inode *inode = mapping->host;
- struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_sbd *sdp = GFS2_SB(inode);
+ loff_t i_size = i_size_read(inode);
+ pgoff_t end_index = i_size >> PAGE_CACHE_SHIFT;
+ unsigned offset = i_size & (PAGE_CACHE_SIZE-1);
+ unsigned nrblocks = nr_pages * (PAGE_CACHE_SIZE/inode->i_sb->s_blocksize);
+ struct backing_dev_info *bdi = mapping->backing_dev_info;
+ int i;
+ int ret;
+
+ ret = gfs2_trans_begin(sdp, nrblocks, 0);
+ if (ret < 0)
+ return ret;
+
+ for(i = 0; i < nr_pages; i++) {
+ struct page *page = pvec->pages[i];
+
+ lock_page(page);
+
+ if (unlikely(page->mapping != mapping)) {
+ unlock_page(page);
+ continue;
+ }
+
+ if (!wbc->range_cyclic && page->index > end) {
+ ret = 1;
+ unlock_page(page);
+ continue;
+ }
+
+ if (wbc->sync_mode != WB_SYNC_NONE)
+ wait_on_page_writeback(page);
+
+ if (PageWriteback(page) ||
+ !clear_page_dirty_for_io(page)) {
+ unlock_page(page);
+ continue;
+ }
+
+ /* Is the page fully outside i_size? (truncate in progress) */
+ if (page->index > end_index || (page->index == end_index && !offset)) {
+ page->mapping->a_ops->invalidatepage(page, 0);
+ unlock_page(page);
+ continue;
+ }
+
+ ret = __gfs2_jdata_writepage(page, wbc);
+
+ if (ret || (--(wbc->nr_to_write) <= 0))
+ ret = 1;
+ if (wbc->nonblocking && bdi_write_congested(bdi)) {
+ wbc->encountered_congestion = 1;
+ ret = 1;
+ }
+
+ }
+ gfs2_trans_end(sdp);
+ return ret;
+}
+
+/**
+ * gfs2_write_cache_jdata - Like write_cache_pages but different
+ * @mapping: The mapping to write
+ * @wbc: The writeback control
+ * @writepage: The writepage function to call
+ * @data: The data to pass to writepage
+ *
+ * The reason that we use our own function here is that we need to
+ * start transactions before we grab page locks. This allows us
+ * to get the ordering right.
+ */
+
+static int gfs2_write_cache_jdata(struct address_space *mapping,
+ struct writeback_control *wbc)
+{
+ struct backing_dev_info *bdi = mapping->backing_dev_info;
+ int ret = 0;
+ int done = 0;
+ struct pagevec pvec;
+ int nr_pages;
+ pgoff_t index;
+ pgoff_t end;
+ int scanned = 0;
+ int range_whole = 0;
+
+ if (wbc->nonblocking && bdi_write_congested(bdi)) {
+ wbc->encountered_congestion = 1;
+ return 0;
+ }
+
+ pagevec_init(&pvec, 0);
+ if (wbc->range_cyclic) {
+ index = mapping->writeback_index; /* Start from prev offset */
+ end = -1;
+ } else {
+ index = wbc->range_start >> PAGE_CACHE_SHIFT;
+ end = wbc->range_end >> PAGE_CACHE_SHIFT;
+ if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX)
+ range_whole = 1;
+ scanned = 1;
+ }
- if (sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK && !gfs2_is_jdata(ip))
- return mpage_writepages(mapping, wbc, gfs2_get_block_noalloc);
+retry:
+ while (!done && (index <= end) &&
+ (nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
+ PAGECACHE_TAG_DIRTY,
+ min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1))) {
+ scanned = 1;
+ ret = gfs2_write_jdata_pagevec(mapping, wbc, &pvec, nr_pages, end);
+ if (ret)
+ done = 1;
+ if (ret > 0)
+ ret = 0;
+
+ pagevec_release(&pvec);
+ cond_resched();
+ }
+
+ if (!scanned && !done) {
+ /*
+ * We hit the last page and there is more work to be done: wrap
+ * back to the start of the file
+ */
+ scanned = 1;
+ index = 0;
+ goto retry;
+ }
+
+ if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
+ mapping->writeback_index = index;
+ return ret;
+}
+
+
+/**
+ * gfs2_jdata_writepages - Write a bunch of dirty pages back to disk
+ * @mapping: The mapping to write
+ * @wbc: The writeback control
+ *
+ */
- return generic_writepages(mapping, wbc);
+static int gfs2_jdata_writepages(struct address_space *mapping,
+ struct writeback_control *wbc)
+{
+ struct gfs2_inode *ip = GFS2_I(mapping->host);
+ struct gfs2_sbd *sdp = GFS2_SB(mapping->host);
+ int ret;
+
+ ret = gfs2_write_cache_jdata(mapping, wbc);
+ if (ret == 0 && wbc->sync_mode == WB_SYNC_ALL) {
+ gfs2_log_flush(sdp, ip->i_gl);
+ ret = gfs2_write_cache_jdata(mapping, wbc);
+ }
+ return ret;
}
/**
/**
- * gfs2_readpage - readpage with locking
- * @file: The file to read a page for. N.B. This may be NULL if we are
- * reading an internal file.
+ * __gfs2_readpage - readpage
+ * @file: The file to read a page for
* @page: The page to read
*
- * Returns: errno
+ * This is the core of gfs2's readpage. Its used by the internal file
+ * reading code as in that case we already hold the glock. Also its
+ * called by gfs2_readpage() once the required lock has been granted.
+ *
*/
-static int gfs2_readpage(struct file *file, struct page *page)
+static int __gfs2_readpage(void *file, struct page *page)
{
struct gfs2_inode *ip = GFS2_I(page->mapping->host);
struct gfs2_sbd *sdp = GFS2_SB(page->mapping->host);
- struct gfs2_file *gf = NULL;
- struct gfs2_holder gh;
int error;
- int do_unlock = 0;
-
- if (likely(file != &gfs2_internal_file_sentinel)) {
- if (file) {
- gf = file->private_data;
- if (test_bit(GFF_EXLOCK, &gf->f_flags))
- /* gfs2_sharewrite_fault has grabbed the ip->i_gl already */
- goto skip_lock;
- }
- gfs2_holder_init(ip->i_gl, LM_ST_SHARED, GL_ATIME|LM_FLAG_TRY_1CB, &gh);
- do_unlock = 1;
- error = gfs2_glock_nq_atime(&gh);
- if (unlikely(error))
- goto out_unlock;
- }
-skip_lock:
if (gfs2_is_stuffed(ip)) {
error = stuffed_readpage(ip, page);
unlock_page(page);
- } else
- error = mpage_readpage(page, gfs2_get_block);
+ } else {
+ error = mpage_readpage(page, gfs2_block_map);
+ }
if (unlikely(test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
- error = -EIO;
+ return -EIO;
+
+ return error;
+}
+
+/**
+ * gfs2_readpage - read a page of a file
+ * @file: The file to read
+ * @page: The page of the file
+ *
+ * This deals with the locking required. We use a trylock in order to
+ * avoid the page lock / glock ordering problems returning AOP_TRUNCATED_PAGE
+ * in the event that we are unable to get the lock.
+ */
+
+static int gfs2_readpage(struct file *file, struct page *page)
+{
+ struct gfs2_inode *ip = GFS2_I(page->mapping->host);
+ struct gfs2_holder gh;
+ int error;
- if (do_unlock) {
- gfs2_glock_dq_m(1, &gh);
- gfs2_holder_uninit(&gh);
+ gfs2_holder_init(ip->i_gl, LM_ST_SHARED, GL_ATIME|LM_FLAG_TRY_1CB, &gh);
+ error = gfs2_glock_nq_atime(&gh);
+ if (unlikely(error)) {
+ unlock_page(page);
+ goto out;
}
+ error = __gfs2_readpage(file, page);
+ gfs2_glock_dq(&gh);
out:
- return error;
-out_unlock:
- unlock_page(page);
+ gfs2_holder_uninit(&gh);
if (error == GLR_TRYFAILED) {
- error = AOP_TRUNCATED_PAGE;
yield();
+ return AOP_TRUNCATED_PAGE;
}
- if (do_unlock)
- gfs2_holder_uninit(&gh);
- goto out;
+ return error;
+}
+
+/**
+ * gfs2_internal_read - read an internal file
+ * @ip: The gfs2 inode
+ * @ra_state: The readahead state (or NULL for no readahead)
+ * @buf: The buffer to fill
+ * @pos: The file position
+ * @size: The amount to read
+ *
+ */
+
+int gfs2_internal_read(struct gfs2_inode *ip, struct file_ra_state *ra_state,
+ char *buf, loff_t *pos, unsigned size)
+{
+ struct address_space *mapping = ip->i_inode.i_mapping;
+ unsigned long index = *pos / PAGE_CACHE_SIZE;
+ unsigned offset = *pos & (PAGE_CACHE_SIZE - 1);
+ unsigned copied = 0;
+ unsigned amt;
+ struct page *page;
+ void *p;
+
+ do {
+ amt = size - copied;
+ if (offset + size > PAGE_CACHE_SIZE)
+ amt = PAGE_CACHE_SIZE - offset;
+ page = read_cache_page(mapping, index, __gfs2_readpage, NULL);
+ if (IS_ERR(page))
+ return PTR_ERR(page);
+ p = kmap_atomic(page, KM_USER0);
+ memcpy(buf + copied, p + offset, amt);
+ kunmap_atomic(p, KM_USER0);
+ mark_page_accessed(page);
+ page_cache_release(page);
+ copied += amt;
+ index++;
+ offset = 0;
+ } while(copied < size);
+ (*pos) += size;
+ return size;
}
/**
* Any I/O we ignore at this time will be done via readpage later.
* 2. We don't handle stuffed files here we let readpage do the honours.
* 3. mpage_readpages() does most of the heavy lifting in the common case.
- * 4. gfs2_get_block() is relied upon to set BH_Boundary in the right places.
- * 5. We use LM_FLAG_TRY_1CB here, effectively we then have lock-ahead as
- * well as read-ahead.
+ * 4. gfs2_block_map() is relied upon to set BH_Boundary in the right places.
*/
+
static int gfs2_readpages(struct file *file, struct address_space *mapping,
struct list_head *pages, unsigned nr_pages)
{
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_sbd *sdp = GFS2_SB(inode);
struct gfs2_holder gh;
- int ret = 0;
- int do_unlock = 0;
+ int ret;
- if (likely(file != &gfs2_internal_file_sentinel)) {
- if (file) {
- struct gfs2_file *gf = file->private_data;
- if (test_bit(GFF_EXLOCK, &gf->f_flags))
- goto skip_lock;
- }
- gfs2_holder_init(ip->i_gl, LM_ST_SHARED,
- LM_FLAG_TRY_1CB|GL_ATIME, &gh);
- do_unlock = 1;
- ret = gfs2_glock_nq_atime(&gh);
- if (ret == GLR_TRYFAILED)
- goto out_noerror;
- if (unlikely(ret))
- goto out_unlock;
- }
-skip_lock:
+ gfs2_holder_init(ip->i_gl, LM_ST_SHARED, GL_ATIME, &gh);
+ ret = gfs2_glock_nq_atime(&gh);
+ if (unlikely(ret))
+ goto out_uninit;
if (!gfs2_is_stuffed(ip))
- ret = mpage_readpages(mapping, pages, nr_pages, gfs2_get_block);
-
- if (do_unlock) {
- gfs2_glock_dq_m(1, &gh);
- gfs2_holder_uninit(&gh);
- }
-out:
+ ret = mpage_readpages(mapping, pages, nr_pages, gfs2_block_map);
+ gfs2_glock_dq(&gh);
+out_uninit:
+ gfs2_holder_uninit(&gh);
if (unlikely(test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
ret = -EIO;
return ret;
-out_noerror:
- ret = 0;
-out_unlock:
- if (do_unlock)
- gfs2_holder_uninit(&gh);
- goto out;
}
/**
if (unlikely(error))
goto out_uninit;
- error = -ENOMEM;
- page = __grab_cache_page(mapping, index);
- *pagep = page;
- if (!page)
- goto out_unlock;
-
gfs2_write_calc_reserv(ip, len, &data_blocks, &ind_blocks);
-
error = gfs2_write_alloc_required(ip, pos, len, &alloc_required);
if (error)
- goto out_putpage;
-
+ goto out_unlock;
- ip->i_alloc.al_requested = 0;
if (alloc_required) {
al = gfs2_alloc_get(ip);
if (error)
goto out_trans_fail;
+ error = -ENOMEM;
+ page = __grab_cache_page(mapping, index);
+ *pagep = page;
+ if (unlikely(!page))
+ goto out_endtrans;
+
if (gfs2_is_stuffed(ip)) {
+ error = 0;
if (pos + len > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode)) {
error = gfs2_unstuff_dinode(ip, page);
if (error == 0)
goto prepare_write;
- } else if (!PageUptodate(page))
+ } else if (!PageUptodate(page)) {
error = stuffed_readpage(ip, page);
+ }
goto out;
}
prepare_write:
- error = block_prepare_write(page, from, to, gfs2_get_block);
-
+ error = block_prepare_write(page, from, to, gfs2_block_map);
out:
- if (error) {
- gfs2_trans_end(sdp);
+ if (error == 0)
+ return 0;
+
+ page_cache_release(page);
+ if (pos + len > ip->i_inode.i_size)
+ vmtruncate(&ip->i_inode, ip->i_inode.i_size);
+out_endtrans:
+ gfs2_trans_end(sdp);
out_trans_fail:
- if (alloc_required) {
- gfs2_inplace_release(ip);
+ if (alloc_required) {
+ gfs2_inplace_release(ip);
out_qunlock:
- gfs2_quota_unlock(ip);
+ gfs2_quota_unlock(ip);
out_alloc_put:
- gfs2_alloc_put(ip);
- }
-out_putpage:
- page_cache_release(page);
- if (pos + len > ip->i_inode.i_size)
- vmtruncate(&ip->i_inode, ip->i_inode.i_size);
+ gfs2_alloc_put(ip);
+ }
out_unlock:
- gfs2_glock_dq_m(1, &ip->i_gh);
+ gfs2_glock_dq(&ip->i_gh);
out_uninit:
- gfs2_holder_uninit(&ip->i_gh);
- }
-
+ gfs2_holder_uninit(&ip->i_gh);
return error;
}
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_sbd *sdp = GFS2_SB(inode);
struct buffer_head *dibh;
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_dinode *di;
unsigned int from = pos & (PAGE_CACHE_SIZE - 1);
unsigned int to = from + len;
if (gfs2_is_stuffed(ip))
return gfs2_stuffed_write_end(inode, dibh, pos, len, copied, page);
- if (sdp->sd_args.ar_data == GFS2_DATA_ORDERED || gfs2_is_jdata(ip))
+ if (!gfs2_is_writeback(ip))
gfs2_page_add_databufs(ip, page, from, to);
ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata);
- if (likely(ret >= 0)) {
- copied = ret;
- if ((pos + copied) > inode->i_size) {
- di = (struct gfs2_dinode *)dibh->b_data;
- ip->i_di.di_size = inode->i_size;
- di->di_size = cpu_to_be64(inode->i_size);
- mark_inode_dirty(inode);
- }
+ if (likely(ret >= 0) && (inode->i_size > ip->i_di.di_size)) {
+ di = (struct gfs2_dinode *)dibh->b_data;
+ ip->i_di.di_size = inode->i_size;
+ di->di_size = cpu_to_be64(inode->i_size);
+ mark_inode_dirty(inode);
}
if (inode == sdp->sd_rindex)
brelse(dibh);
gfs2_trans_end(sdp);
failed:
- if (al->al_requested) {
+ if (al) {
gfs2_inplace_release(ip);
gfs2_quota_unlock(ip);
gfs2_alloc_put(ip);
static int gfs2_set_page_dirty(struct page *page)
{
- struct gfs2_inode *ip = GFS2_I(page->mapping->host);
- struct gfs2_sbd *sdp = GFS2_SB(page->mapping->host);
-
- if (sdp->sd_args.ar_data == GFS2_DATA_ORDERED || gfs2_is_jdata(ip))
- SetPageChecked(page);
+ SetPageChecked(page);
return __set_page_dirty_buffers(page);
}
return 0;
if (!gfs2_is_stuffed(ip))
- dblock = generic_block_bmap(mapping, lblock, gfs2_get_block);
+ dblock = generic_block_bmap(mapping, lblock, gfs2_block_map);
gfs2_glock_dq_uninit(&i_gh);
{
/*
* Should we return an error here? I can't see that O_DIRECT for
- * a journaled file makes any sense. For now we'll silently fall
- * back to buffered I/O, likewise we do the same for stuffed
- * files since they are (a) small and (b) unaligned.
+ * a stuffed file makes any sense. For now we'll silently fall
+ * back to buffered I/O
*/
- if (gfs2_is_jdata(ip))
- return 0;
-
if (gfs2_is_stuffed(ip))
return 0;
return 0;
}
-const struct address_space_operations gfs2_file_aops = {
- .writepage = gfs2_writepage,
- .writepages = gfs2_writepages,
+static const struct address_space_operations gfs2_writeback_aops = {
+ .writepage = gfs2_writeback_writepage,
+ .writepages = gfs2_writeback_writepages,
+ .readpage = gfs2_readpage,
+ .readpages = gfs2_readpages,
+ .sync_page = block_sync_page,
+ .write_begin = gfs2_write_begin,
+ .write_end = gfs2_write_end,
+ .bmap = gfs2_bmap,
+ .invalidatepage = gfs2_invalidatepage,
+ .releasepage = gfs2_releasepage,
+ .direct_IO = gfs2_direct_IO,
+ .migratepage = buffer_migrate_page,
+};
+
+static const struct address_space_operations gfs2_ordered_aops = {
+ .writepage = gfs2_ordered_writepage,
.readpage = gfs2_readpage,
.readpages = gfs2_readpages,
.sync_page = block_sync_page,
.invalidatepage = gfs2_invalidatepage,
.releasepage = gfs2_releasepage,
.direct_IO = gfs2_direct_IO,
+ .migratepage = buffer_migrate_page,
};
+static const struct address_space_operations gfs2_jdata_aops = {
+ .writepage = gfs2_jdata_writepage,
+ .writepages = gfs2_jdata_writepages,
+ .readpage = gfs2_readpage,
+ .readpages = gfs2_readpages,
+ .sync_page = block_sync_page,
+ .write_begin = gfs2_write_begin,
+ .write_end = gfs2_write_end,
+ .set_page_dirty = gfs2_set_page_dirty,
+ .bmap = gfs2_bmap,
+ .invalidatepage = gfs2_invalidatepage,
+ .releasepage = gfs2_releasepage,
+};
+
+void gfs2_set_aops(struct inode *inode)
+{
+ struct gfs2_inode *ip = GFS2_I(inode);
+
+ if (gfs2_is_writeback(ip))
+ inode->i_mapping->a_ops = &gfs2_writeback_aops;
+ else if (gfs2_is_ordered(ip))
+ inode->i_mapping->a_ops = &gfs2_ordered_aops;
+ else if (gfs2_is_jdata(ip))
+ inode->i_mapping->a_ops = &gfs2_jdata_aops;
+ else
+ BUG();
+}
+
#include <linux/buffer_head.h>
#include <linux/mm.h>
-extern const struct address_space_operations gfs2_file_aops;
-extern int gfs2_get_block(struct inode *inode, sector_t lblock,
- struct buffer_head *bh_result, int create);
extern int gfs2_releasepage(struct page *page, gfp_t gfp_mask);
+extern int gfs2_internal_read(struct gfs2_inode *ip,
+ struct file_ra_state *ra_state,
+ char *buf, loff_t *pos, unsigned size);
+extern void gfs2_set_aops(struct inode *inode);
#endif /* __OPS_ADDRESS_DOT_H__ */
#include "lm.h"
#include "log.h"
#include "meta_io.h"
-#include "ops_file.h"
-#include "ops_vm.h"
#include "quota.h"
#include "rgrp.h"
#include "trans.h"
#include "util.h"
#include "eaops.h"
-
-/*
- * Most fields left uninitialised to catch anybody who tries to
- * use them. f_flags set to prevent file_accessed() from touching
- * any other part of this. Its use is purely as a flag so that we
- * know (in readpage()) whether or not do to locking.
- */
-struct file gfs2_internal_file_sentinel = {
- .f_flags = O_NOATIME|O_RDONLY,
-};
-
-static int gfs2_read_actor(read_descriptor_t *desc, struct page *page,
- unsigned long offset, unsigned long size)
-{
- char *kaddr;
- unsigned long count = desc->count;
-
- if (size > count)
- size = count;
-
- kaddr = kmap(page);
- memcpy(desc->arg.data, kaddr + offset, size);
- kunmap(page);
-
- desc->count = count - size;
- desc->written += size;
- desc->arg.buf += size;
- return size;
-}
-
-int gfs2_internal_read(struct gfs2_inode *ip, struct file_ra_state *ra_state,
- char *buf, loff_t *pos, unsigned size)
-{
- struct inode *inode = &ip->i_inode;
- read_descriptor_t desc;
- desc.written = 0;
- desc.arg.data = buf;
- desc.count = size;
- desc.error = 0;
- do_generic_mapping_read(inode->i_mapping, ra_state,
- &gfs2_internal_file_sentinel, pos, &desc,
- gfs2_read_actor);
- return desc.written ? desc.written : desc.error;
-}
+#include "ops_address.h"
/**
* gfs2_llseek - seek to a location in a file
if (put_user(fsflags, ptr))
error = -EFAULT;
- gfs2_glock_dq_m(1, &gh);
+ gfs2_glock_dq(&gh);
gfs2_holder_uninit(&gh);
return error;
}
if (error)
goto out;
}
-
+ if ((flags ^ new_flags) & GFS2_DIF_JDATA) {
+ if (flags & GFS2_DIF_JDATA)
+ gfs2_log_flush(sdp, ip->i_gl);
+ error = filemap_fdatawrite(inode->i_mapping);
+ if (error)
+ goto out;
+ error = filemap_fdatawait(inode->i_mapping);
+ if (error)
+ goto out;
+ }
error = gfs2_trans_begin(sdp, RES_DINODE, 0);
if (error)
goto out;
gfs2_dinode_out(ip, bh->b_data);
brelse(bh);
gfs2_set_inode_flags(inode);
+ gfs2_set_aops(inode);
out_trans_end:
gfs2_trans_end(sdp);
out:
return -ENOTTY;
}
+/**
+ * gfs2_allocate_page_backing - Use bmap to allocate blocks
+ * @page: The (locked) page to allocate backing for
+ *
+ * We try to allocate all the blocks required for the page in
+ * one go. This might fail for various reasons, so we keep
+ * trying until all the blocks to back this page are allocated.
+ * If some of the blocks are already allocated, thats ok too.
+ */
+
+static int gfs2_allocate_page_backing(struct page *page)
+{
+ struct inode *inode = page->mapping->host;
+ struct buffer_head bh;
+ unsigned long size = PAGE_CACHE_SIZE;
+ u64 lblock = page->index << (PAGE_CACHE_SHIFT - inode->i_blkbits);
+
+ do {
+ bh.b_state = 0;
+ bh.b_size = size;
+ gfs2_block_map(inode, lblock, &bh, 1);
+ if (!buffer_mapped(&bh))
+ return -EIO;
+ size -= bh.b_size;
+ lblock += (bh.b_size >> inode->i_blkbits);
+ } while(size > 0);
+ return 0;
+}
+
+/**
+ * gfs2_page_mkwrite - Make a shared, mmap()ed, page writable
+ * @vma: The virtual memory area
+ * @page: The page which is about to become writable
+ *
+ * When the page becomes writable, we need to ensure that we have
+ * blocks allocated on disk to back that page.
+ */
+
+static int gfs2_page_mkwrite(struct vm_area_struct *vma, struct page *page)
+{
+ struct inode *inode = vma->vm_file->f_path.dentry->d_inode;
+ struct gfs2_inode *ip = GFS2_I(inode);
+ struct gfs2_sbd *sdp = GFS2_SB(inode);
+ unsigned long last_index;
+ u64 pos = page->index << (PAGE_CACHE_SIZE - inode->i_blkbits);
+ unsigned int data_blocks, ind_blocks, rblocks;
+ int alloc_required = 0;
+ struct gfs2_holder gh;
+ struct gfs2_alloc *al;
+ int ret;
+
+ gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_ATIME, &gh);
+ ret = gfs2_glock_nq_atime(&gh);
+ if (ret)
+ goto out;
+
+ set_bit(GIF_SW_PAGED, &ip->i_flags);
+ gfs2_write_calc_reserv(ip, PAGE_CACHE_SIZE, &data_blocks, &ind_blocks);
+ ret = gfs2_write_alloc_required(ip, pos, PAGE_CACHE_SIZE, &alloc_required);
+ if (ret || !alloc_required)
+ goto out_unlock;
+ ret = -ENOMEM;
+ al = gfs2_alloc_get(ip);
+ if (al == NULL)
+ goto out_unlock;
+
+ ret = gfs2_quota_lock(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
+ if (ret)
+ goto out_alloc_put;
+ ret = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid);
+ if (ret)
+ goto out_quota_unlock;
+ al->al_requested = data_blocks + ind_blocks;
+ ret = gfs2_inplace_reserve(ip);
+ if (ret)
+ goto out_quota_unlock;
+
+ rblocks = RES_DINODE + ind_blocks;
+ if (gfs2_is_jdata(ip))
+ rblocks += data_blocks ? data_blocks : 1;
+ if (ind_blocks || data_blocks)
+ rblocks += RES_STATFS + RES_QUOTA;
+ ret = gfs2_trans_begin(sdp, rblocks, 0);
+ if (ret)
+ goto out_trans_fail;
+
+ lock_page(page);
+ ret = -EINVAL;
+ last_index = ip->i_inode.i_size >> PAGE_CACHE_SHIFT;
+ if (page->index > last_index)
+ goto out_unlock_page;
+ ret = 0;
+ if (!PageUptodate(page) || page->mapping != ip->i_inode.i_mapping)
+ goto out_unlock_page;
+ if (gfs2_is_stuffed(ip)) {
+ ret = gfs2_unstuff_dinode(ip, page);
+ if (ret)
+ goto out_unlock_page;
+ }
+ ret = gfs2_allocate_page_backing(page);
+
+out_unlock_page:
+ unlock_page(page);
+ gfs2_trans_end(sdp);
+out_trans_fail:
+ gfs2_inplace_release(ip);
+out_quota_unlock:
+ gfs2_quota_unlock(ip);
+out_alloc_put:
+ gfs2_alloc_put(ip);
+out_unlock:
+ gfs2_glock_dq(&gh);
+out:
+ gfs2_holder_uninit(&gh);
+ return ret;
+}
+
+static struct vm_operations_struct gfs2_vm_ops = {
+ .fault = filemap_fault,
+ .page_mkwrite = gfs2_page_mkwrite,
+};
+
/**
* gfs2_mmap -
return error;
}
- /* This is VM_MAYWRITE instead of VM_WRITE because a call
- to mprotect() can turn on VM_WRITE later. */
-
- if ((vma->vm_flags & (VM_MAYSHARE | VM_MAYWRITE)) ==
- (VM_MAYSHARE | VM_MAYWRITE))
- vma->vm_ops = &gfs2_vm_ops_sharewrite;
- else
- vma->vm_ops = &gfs2_vm_ops_private;
+ vma->vm_ops = &gfs2_vm_ops;
gfs2_glock_dq_uninit(&i_gh);
if (__mandatory_lock(&ip->i_inode))
return -ENOLCK;
- if (sdp->sd_args.ar_localflocks) {
- if (IS_GETLK(cmd)) {
- posix_test_lock(file, fl);
- return 0;
- } else {
- return posix_lock_file_wait(file, fl);
- }
- }
-
if (cmd == F_CANCELLK) {
/* Hack: */
cmd = F_SETLK;
static int gfs2_flock(struct file *file, int cmd, struct file_lock *fl)
{
struct gfs2_inode *ip = GFS2_I(file->f_mapping->host);
- struct gfs2_sbd *sdp = GFS2_SB(file->f_mapping->host);
if (!(fl->fl_flags & FL_FLOCK))
return -ENOLCK;
if (__mandatory_lock(&ip->i_inode))
return -ENOLCK;
- if (sdp->sd_args.ar_localflocks)
- return flock_lock_file_wait(file, fl);
-
if (fl->fl_type == F_UNLCK) {
do_unflock(file, fl);
return 0;
.flock = gfs2_flock,
};
+const struct file_operations gfs2_file_fops_nolock = {
+ .llseek = gfs2_llseek,
+ .read = do_sync_read,
+ .aio_read = generic_file_aio_read,
+ .write = do_sync_write,
+ .aio_write = generic_file_aio_write,
+ .unlocked_ioctl = gfs2_ioctl,
+ .mmap = gfs2_mmap,
+ .open = gfs2_open,
+ .release = gfs2_close,
+ .fsync = gfs2_fsync,
+ .splice_read = generic_file_splice_read,
+ .splice_write = generic_file_splice_write,
+ .setlease = gfs2_setlease,
+};
+
+const struct file_operations gfs2_dir_fops_nolock = {
+ .readdir = gfs2_readdir,
+ .unlocked_ioctl = gfs2_ioctl,
+ .open = gfs2_open,
+ .release = gfs2_close,
+ .fsync = gfs2_fsync,
+};
+
+++ /dev/null
-/*
- * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License version 2.
- */
-
-#ifndef __OPS_FILE_DOT_H__
-#define __OPS_FILE_DOT_H__
-
-#include <linux/fs.h>
-struct gfs2_inode;
-
-extern struct file gfs2_internal_file_sentinel;
-extern int gfs2_internal_read(struct gfs2_inode *ip,
- struct file_ra_state *ra_state,
- char *buf, loff_t *pos, unsigned size);
-extern void gfs2_set_inode_flags(struct inode *inode);
-extern const struct file_operations gfs2_file_fops;
-extern const struct file_operations gfs2_dir_fops;
-
-#endif /* __OPS_FILE_DOT_H__ */
/*
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
#include "gfs2.h"
#include "incore.h"
+#include "bmap.h"
#include "daemon.h"
#include "glock.h"
#include "glops.h"
mutex_init(&sdp->sd_inum_mutex);
spin_lock_init(&sdp->sd_statfs_spin);
- mutex_init(&sdp->sd_statfs_mutex);
spin_lock_init(&sdp->sd_rindex_spin);
mutex_init(&sdp->sd_rindex_mutex);
spin_lock_init(&sdp->sd_log_lock);
- INIT_LIST_HEAD(&sdp->sd_log_le_gl);
INIT_LIST_HEAD(&sdp->sd_log_le_buf);
INIT_LIST_HEAD(&sdp->sd_log_le_revoke);
INIT_LIST_HEAD(&sdp->sd_log_le_rg);
return error;
}
+/**
+ * map_journal_extents - create a reusable "extent" mapping from all logical
+ * blocks to all physical blocks for the given journal. This will save
+ * us time when writing journal blocks. Most journals will have only one
+ * extent that maps all their logical blocks. That's because gfs2.mkfs
+ * arranges the journal blocks sequentially to maximize performance.
+ * So the extent would map the first block for the entire file length.
+ * However, gfs2_jadd can happen while file activity is happening, so
+ * those journals may not be sequential. Less likely is the case where
+ * the users created their own journals by mounting the metafs and
+ * laying it out. But it's still possible. These journals might have
+ * several extents.
+ *
+ * TODO: This should be done in bigger chunks rather than one block at a time,
+ * but since it's only done at mount time, I'm not worried about the
+ * time it takes.
+ */
+static int map_journal_extents(struct gfs2_sbd *sdp)
+{
+ struct gfs2_jdesc *jd = sdp->sd_jdesc;
+ unsigned int lb;
+ u64 db, prev_db; /* logical block, disk block, prev disk block */
+ struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
+ struct gfs2_journal_extent *jext = NULL;
+ struct buffer_head bh;
+ int rc = 0;
+
+ prev_db = 0;
+
+ for (lb = 0; lb < ip->i_di.di_size >> sdp->sd_sb.sb_bsize_shift; lb++) {
+ bh.b_state = 0;
+ bh.b_blocknr = 0;
+ bh.b_size = 1 << ip->i_inode.i_blkbits;
+ rc = gfs2_block_map(jd->jd_inode, lb, &bh, 0);
+ db = bh.b_blocknr;
+ if (rc || !db) {
+ printk(KERN_INFO "GFS2 journal mapping error %d: lb="
+ "%u db=%llu\n", rc, lb, (unsigned long long)db);
+ break;
+ }
+ if (!prev_db || db != prev_db + 1) {
+ jext = kzalloc(sizeof(struct gfs2_journal_extent),
+ GFP_KERNEL);
+ if (!jext) {
+ printk(KERN_INFO "GFS2 error: out of memory "
+ "mapping journal extents.\n");
+ rc = -ENOMEM;
+ break;
+ }
+ jext->dblock = db;
+ jext->lblock = lb;
+ jext->blocks = 1;
+ list_add_tail(&jext->extent_list, &jd->extent_list);
+ } else {
+ jext->blocks++;
+ }
+ prev_db = db;
+ }
+ return rc;
+}
+
static int init_journal(struct gfs2_sbd *sdp, int undo)
{
struct gfs2_holder ji_gh;
if (sdp->sd_args.ar_spectator) {
sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0);
- sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks;
+ atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks);
} else {
if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) {
fs_err(sdp, "can't mount journal #%u\n",
sdp->sd_jdesc->jd_jid, error);
goto fail_jinode_gh;
}
- sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks;
+ atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks);
+
+ /* Map the extents for this journal's blocks */
+ map_journal_extents(sdp);
}
if (sdp->sd_lockstruct.ls_first) {
inode = gfs2_createi(ghs, &dentry->d_name, S_IFREG | mode, 0);
if (!IS_ERR(inode)) {
gfs2_trans_end(sdp);
- if (dip->i_alloc.al_rgd)
+ if (dip->i_alloc->al_rgd)
gfs2_inplace_release(dip);
gfs2_quota_unlock(dip);
gfs2_alloc_put(dip);
if (inode && IS_ERR(inode))
return ERR_PTR(PTR_ERR(inode));
- if (inode)
+ if (inode) {
+ struct gfs2_glock *gl = GFS2_I(inode)->i_gl;
+ struct gfs2_holder gh;
+ int error;
+ error = gfs2_glock_nq_init(gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
+ if (error) {
+ iput(inode);
+ return ERR_PTR(error);
+ }
+ gfs2_glock_dq_uninit(&gh);
return d_splice_alias(inode, dentry);
+ }
d_add(dentry, inode);
return NULL;
}
gfs2_trans_end(sdp);
- if (dip->i_alloc.al_rgd)
+ if (dip->i_alloc->al_rgd)
gfs2_inplace_release(dip);
gfs2_quota_unlock(dip);
gfs2_alloc_put(dip);
gfs2_assert_withdraw(sdp, !error); /* dip already pinned */
gfs2_trans_end(sdp);
- if (dip->i_alloc.al_rgd)
+ if (dip->i_alloc->al_rgd)
gfs2_inplace_release(dip);
gfs2_quota_unlock(dip);
gfs2_alloc_put(dip);
}
gfs2_trans_end(sdp);
- if (dip->i_alloc.al_rgd)
+ if (dip->i_alloc->al_rgd)
gfs2_inplace_release(dip);
gfs2_quota_unlock(dip);
gfs2_alloc_put(dip);
extern const struct inode_operations gfs2_dir_iops;
extern const struct inode_operations gfs2_symlink_iops;
extern const struct inode_operations gfs2_dev_iops;
+extern const struct file_operations gfs2_file_fops;
+extern const struct file_operations gfs2_dir_fops;
+extern const struct file_operations gfs2_file_fops_nolock;
+extern const struct file_operations gfs2_dir_fops_nolock;
+
+extern void gfs2_set_inode_flags(struct inode *inode);
#endif /* __OPS_INODE_DOT_H__ */
if (ip) {
ip->i_flags = 0;
ip->i_gl = NULL;
- ip->i_last_pfault = jiffies;
}
return &ip->i_inode;
}
+++ /dev/null
-/*
- * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License version 2.
- */
-
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/completion.h>
-#include <linux/buffer_head.h>
-#include <linux/mm.h>
-#include <linux/pagemap.h>
-#include <linux/gfs2_ondisk.h>
-#include <linux/lm_interface.h>
-
-#include "gfs2.h"
-#include "incore.h"
-#include "bmap.h"
-#include "glock.h"
-#include "inode.h"
-#include "ops_vm.h"
-#include "quota.h"
-#include "rgrp.h"
-#include "trans.h"
-#include "util.h"
-
-static int gfs2_private_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
-{
- struct gfs2_inode *ip = GFS2_I(vma->vm_file->f_mapping->host);
-
- set_bit(GIF_PAGED, &ip->i_flags);
- return filemap_fault(vma, vmf);
-}
-
-static int alloc_page_backing(struct gfs2_inode *ip, struct page *page)
-{
- struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- unsigned long index = page->index;
- u64 lblock = index << (PAGE_CACHE_SHIFT -
- sdp->sd_sb.sb_bsize_shift);
- unsigned int blocks = PAGE_CACHE_SIZE >> sdp->sd_sb.sb_bsize_shift;
- struct gfs2_alloc *al;
- unsigned int data_blocks, ind_blocks;
- unsigned int x;
- int error;
-
- al = gfs2_alloc_get(ip);
-
- error = gfs2_quota_lock(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
- if (error)
- goto out;
-
- error = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid);
- if (error)
- goto out_gunlock_q;
-
- gfs2_write_calc_reserv(ip, PAGE_CACHE_SIZE, &data_blocks, &ind_blocks);
-
- al->al_requested = data_blocks + ind_blocks;
-
- error = gfs2_inplace_reserve(ip);
- if (error)
- goto out_gunlock_q;
-
- error = gfs2_trans_begin(sdp, al->al_rgd->rd_length +
- ind_blocks + RES_DINODE +
- RES_STATFS + RES_QUOTA, 0);
- if (error)
- goto out_ipres;
-
- if (gfs2_is_stuffed(ip)) {
- error = gfs2_unstuff_dinode(ip, NULL);
- if (error)
- goto out_trans;
- }
-
- for (x = 0; x < blocks; ) {
- u64 dblock;
- unsigned int extlen;
- int new = 1;
-
- error = gfs2_extent_map(&ip->i_inode, lblock, &new, &dblock, &extlen);
- if (error)
- goto out_trans;
-
- lblock += extlen;
- x += extlen;
- }
-
- gfs2_assert_warn(sdp, al->al_alloced);
-
-out_trans:
- gfs2_trans_end(sdp);
-out_ipres:
- gfs2_inplace_release(ip);
-out_gunlock_q:
- gfs2_quota_unlock(ip);
-out:
- gfs2_alloc_put(ip);
- return error;
-}
-
-static int gfs2_sharewrite_fault(struct vm_area_struct *vma,
- struct vm_fault *vmf)
-{
- struct file *file = vma->vm_file;
- struct gfs2_file *gf = file->private_data;
- struct gfs2_inode *ip = GFS2_I(file->f_mapping->host);
- struct gfs2_holder i_gh;
- int alloc_required;
- int error;
- int ret = 0;
-
- error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh);
- if (error)
- goto out;
-
- set_bit(GIF_PAGED, &ip->i_flags);
- set_bit(GIF_SW_PAGED, &ip->i_flags);
-
- error = gfs2_write_alloc_required(ip,
- (u64)vmf->pgoff << PAGE_CACHE_SHIFT,
- PAGE_CACHE_SIZE, &alloc_required);
- if (error) {
- ret = VM_FAULT_OOM; /* XXX: are these right? */
- goto out_unlock;
- }
-
- set_bit(GFF_EXLOCK, &gf->f_flags);
- ret = filemap_fault(vma, vmf);
- clear_bit(GFF_EXLOCK, &gf->f_flags);
- if (ret & VM_FAULT_ERROR)
- goto out_unlock;
-
- if (alloc_required) {
- /* XXX: do we need to drop page lock around alloc_page_backing?*/
- error = alloc_page_backing(ip, vmf->page);
- if (error) {
- /*
- * VM_FAULT_LOCKED should always be the case for
- * filemap_fault, but it may not be in a future
- * implementation.
- */
- if (ret & VM_FAULT_LOCKED)
- unlock_page(vmf->page);
- page_cache_release(vmf->page);
- ret = VM_FAULT_OOM;
- goto out_unlock;
- }
- set_page_dirty(vmf->page);
- }
-
-out_unlock:
- gfs2_glock_dq_uninit(&i_gh);
-out:
- return ret;
-}
-
-struct vm_operations_struct gfs2_vm_ops_private = {
- .fault = gfs2_private_fault,
-};
-
-struct vm_operations_struct gfs2_vm_ops_sharewrite = {
- .fault = gfs2_sharewrite_fault,
-};
-
+++ /dev/null
-/*
- * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License version 2.
- */
-
-#ifndef __OPS_VM_DOT_H__
-#define __OPS_VM_DOT_H__
-
-#include <linux/mm.h>
-
-extern struct vm_operations_struct gfs2_vm_ops_private;
-extern struct vm_operations_struct gfs2_vm_ops_sharewrite;
-
-#endif /* __OPS_VM_DOT_H__ */
/*
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
#include "super.h"
#include "trans.h"
#include "inode.h"
-#include "ops_file.h"
#include "ops_address.h"
#include "util.h"
}
block = qd->qd_slot / sdp->sd_qc_per_block;
- offset = qd->qd_slot % sdp->sd_qc_per_block;;
+ offset = qd->qd_slot % sdp->sd_qc_per_block;
bh_map.b_size = 1 << ip->i_inode.i_blkbits;
- error = gfs2_block_map(&ip->i_inode, block, 0, &bh_map);
+ error = gfs2_block_map(&ip->i_inode, block, &bh_map, 0);
if (error)
goto fail;
error = gfs2_meta_read(ip->i_gl, bh_map.b_blocknr, DIO_WAIT, &bh);
int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_quota_data **qd = al->al_qd;
int error;
void gfs2_quota_unhold(struct gfs2_inode *ip)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_alloc *al = ip->i_alloc;
unsigned int x;
gfs2_assert_warn(sdp, !test_bit(GIF_QD_LOCKED, &ip->i_flags));
}
if (!buffer_mapped(bh)) {
- gfs2_get_block(inode, iblock, bh, 1);
+ gfs2_block_map(inode, iblock, bh, 1);
if (!buffer_mapped(bh))
goto unlock;
}
struct gfs2_holder i_gh;
struct gfs2_quota_host q;
char buf[sizeof(struct gfs2_quota)];
- struct file_ra_state ra_state;
int error;
struct gfs2_quota_lvb *qlvb;
- file_ra_state_init(&ra_state, sdp->sd_quota_inode->i_mapping);
restart:
error = gfs2_glock_nq_init(qd->qd_gl, LM_ST_SHARED, 0, q_gh);
if (error)
memset(buf, 0, sizeof(struct gfs2_quota));
pos = qd2offset(qd);
- error = gfs2_internal_read(ip, &ra_state, buf,
- &pos, sizeof(struct gfs2_quota));
+ error = gfs2_internal_read(ip, NULL, buf, &pos,
+ sizeof(struct gfs2_quota));
if (error < 0)
goto fail_gunlock;
int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_alloc *al = ip->i_alloc;
unsigned int x;
int error = 0;
void gfs2_quota_unlock(struct gfs2_inode *ip)
{
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_quota_data *qda[4];
unsigned int count = 0;
unsigned int x;
int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_quota_data *qd;
s64 value;
unsigned int x;
void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
u32 uid, u32 gid)
{
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_quota_data *qd;
unsigned int x;
- unsigned int found = 0;
if (gfs2_assert_warn(GFS2_SB(&ip->i_inode), change))
return;
if ((qd->qd_id == uid && test_bit(QDF_USER, &qd->qd_flags)) ||
(qd->qd_id == gid && !test_bit(QDF_USER, &qd->qd_flags))) {
do_qc(qd, change);
- found++;
}
}
}
lblock = head->lh_blkno;
gfs2_replay_incr_blk(sdp, &lblock);
bh_map.b_size = 1 << ip->i_inode.i_blkbits;
- error = gfs2_block_map(&ip->i_inode, lblock, 0, &bh_map);
+ error = gfs2_block_map(&ip->i_inode, lblock, &bh_map, 0);
if (error)
return error;
if (!bh_map.b_blocknr) {
if (!test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags))
ro = 1;
} else {
- if (sdp->sd_vfs->s_flags & MS_RDONLY)
- ro = 1;
+ if (sdp->sd_vfs->s_flags & MS_RDONLY) {
+ /* check if device itself is read-only */
+ ro = bdev_read_only(sdp->sd_vfs->s_bdev);
+ if (!ro) {
+ fs_info(sdp, "recovery required on "
+ "read-only filesystem.\n");
+ fs_info(sdp, "write access will be "
+ "enabled during recovery.\n");
+ }
+ }
}
if (ro) {
- fs_warn(sdp, "jid=%u: Can't replay: read-only FS\n",
- jd->jd_jid);
+ fs_warn(sdp, "jid=%u: Can't replay: read-only block "
+ "device\n", jd->jd_jid);
error = -EROFS;
goto fail_gunlock_tr;
}
#include "rgrp.h"
#include "super.h"
#include "trans.h"
-#include "ops_file.h"
#include "util.h"
#include "log.h"
#include "inode.h"
+#include "ops_address.h"
#define BFITNOENT ((u32)~0)
#define NO_BLOCK ((u64)~0)
* Return: the block number (bitmap buffer scope) that was found
*/
-static u32 gfs2_bitfit(struct gfs2_rgrpd *rgd, unsigned char *buffer,
- unsigned int buflen, u32 goal,
- unsigned char old_state)
+static u32 gfs2_bitfit(unsigned char *buffer, unsigned int buflen, u32 goal,
+ unsigned char old_state)
{
- unsigned char *byte, *end, alloc;
+ unsigned char *byte;
u32 blk = goal;
- unsigned int bit;
+ unsigned int bit, bitlong;
+ unsigned long *plong, plong55;
byte = buffer + (goal / GFS2_NBBY);
+ plong = (unsigned long *)(buffer + (goal / GFS2_NBBY));
bit = (goal % GFS2_NBBY) * GFS2_BIT_SIZE;
- end = buffer + buflen;
- alloc = (old_state == GFS2_BLKST_FREE) ? 0x55 : 0;
-
- while (byte < end) {
- /* If we're looking for a free block we can eliminate all
- bitmap settings with 0x55, which represents four data
- blocks in a row. If we're looking for a data block, we can
- eliminate 0x00 which corresponds to four free blocks. */
- if ((*byte & 0x55) == alloc) {
- blk += (8 - bit) >> 1;
-
- bit = 0;
- byte++;
-
+ bitlong = bit;
+#if BITS_PER_LONG == 32
+ plong55 = 0x55555555;
+#else
+ plong55 = 0x5555555555555555;
+#endif
+ while (byte < buffer + buflen) {
+
+ if (bitlong == 0 && old_state == 0 && *plong == plong55) {
+ plong++;
+ byte += sizeof(unsigned long);
+ blk += sizeof(unsigned long) * GFS2_NBBY;
continue;
}
-
if (((*byte >> bit) & GFS2_BIT_MASK) == old_state)
return blk;
-
bit += GFS2_BIT_SIZE;
if (bit >= 8) {
bit = 0;
byte++;
}
+ bitlong += GFS2_BIT_SIZE;
+ if (bitlong >= sizeof(unsigned long) * 8) {
+ bitlong = 0;
+ plong++;
+ }
blk++;
}
struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip)
{
- struct gfs2_alloc *al = &ip->i_alloc;
-
- /* FIXME: Should assert that the correct locks are held here... */
- memset(al, 0, sizeof(*al));
- return al;
+ BUG_ON(ip->i_alloc != NULL);
+ ip->i_alloc = kzalloc(sizeof(struct gfs2_alloc), GFP_KERNEL);
+ return ip->i_alloc;
}
/**
struct inode *inode = NULL;
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_rgrpd *rgd, *begin = NULL;
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_alloc *al = ip->i_alloc;
int flags = LM_FLAG_TRY;
int skipped = 0;
int loops = 0;
- int error;
+ int error, rg_locked;
/* Try recently successful rgrps */
rgd = recent_rgrp_first(sdp, ip->i_last_rg_alloc);
while (rgd) {
- error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE,
- LM_FLAG_TRY, &al->al_rgd_gh);
+ rg_locked = 0;
+
+ if (gfs2_glock_is_locked_by_me(rgd->rd_gl)) {
+ rg_locked = 1;
+ error = 0;
+ } else {
+ error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE,
+ LM_FLAG_TRY, &al->al_rgd_gh);
+ }
switch (error) {
case 0:
if (try_rgrp_fit(rgd, al))
goto out;
if (rgd->rd_flags & GFS2_RDF_CHECK)
inode = try_rgrp_unlink(rgd, last_unlinked);
- gfs2_glock_dq_uninit(&al->al_rgd_gh);
+ if (!rg_locked)
+ gfs2_glock_dq_uninit(&al->al_rgd_gh);
if (inode)
return inode;
rgd = recent_rgrp_next(rgd, 1);
begin = rgd = forward_rgrp_get(sdp);
for (;;) {
- error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, flags,
- &al->al_rgd_gh);
+ rg_locked = 0;
+
+ if (gfs2_glock_is_locked_by_me(rgd->rd_gl)) {
+ rg_locked = 1;
+ error = 0;
+ } else {
+ error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, flags,
+ &al->al_rgd_gh);
+ }
switch (error) {
case 0:
if (try_rgrp_fit(rgd, al))
goto out;
if (rgd->rd_flags & GFS2_RDF_CHECK)
inode = try_rgrp_unlink(rgd, last_unlinked);
- gfs2_glock_dq_uninit(&al->al_rgd_gh);
+ if (!rg_locked)
+ gfs2_glock_dq_uninit(&al->al_rgd_gh);
if (inode)
return inode;
break;
int gfs2_inplace_reserve_i(struct gfs2_inode *ip, char *file, unsigned int line)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_alloc *al = ip->i_alloc;
struct inode *inode;
int error = 0;
u64 last_unlinked = NO_BLOCK;
void gfs2_inplace_release(struct gfs2_inode *ip)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_alloc *al = ip->i_alloc;
if (gfs2_assert_warn(sdp, al->al_alloced <= al->al_requested) == -1)
fs_warn(sdp, "al_alloced = %u, al_requested = %u "
al->al_line);
al->al_rgd = NULL;
- gfs2_glock_dq_uninit(&al->al_rgd_gh);
+ if (al->al_rgd_gh.gh_gl)
+ gfs2_glock_dq_uninit(&al->al_rgd_gh);
if (ip != GFS2_I(sdp->sd_rindex))
gfs2_glock_dq_uninit(&al->al_ri_gh);
}
/* The GFS2_BLKST_UNLINKED state doesn't apply to the clone
bitmaps, so we must search the originals for that. */
if (old_state != GFS2_BLKST_UNLINKED && bi->bi_clone)
- blk = gfs2_bitfit(rgd, bi->bi_clone + bi->bi_offset,
+ blk = gfs2_bitfit(bi->bi_clone + bi->bi_offset,
bi->bi_len, goal, old_state);
else
- blk = gfs2_bitfit(rgd,
- bi->bi_bh->b_data + bi->bi_offset,
+ blk = gfs2_bitfit(bi->bi_bh->b_data + bi->bi_offset,
bi->bi_len, goal, old_state);
if (blk != BFITNOENT)
break;
u64 gfs2_alloc_data(struct gfs2_inode *ip)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_rgrpd *rgd = al->al_rgd;
u32 goal, blk;
u64 block;
u64 gfs2_alloc_meta(struct gfs2_inode *ip)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_rgrpd *rgd = al->al_rgd;
u32 goal, blk;
u64 block;
u64 gfs2_alloc_di(struct gfs2_inode *dip, u64 *generation)
{
struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
- struct gfs2_alloc *al = &dip->i_alloc;
+ struct gfs2_alloc *al = dip->i_alloc;
struct gfs2_rgrpd *rgd = al->al_rgd;
u32 blk;
u64 block;
struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip);
static inline void gfs2_alloc_put(struct gfs2_inode *ip)
{
- return; /* So we can see where ip->i_alloc is used */
+ BUG_ON(ip->i_alloc == NULL);
+ kfree(ip->i_alloc);
+ ip->i_alloc = NULL;
}
int gfs2_inplace_reserve_i(struct gfs2_inode *ip,
/*
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
{
spin_lock_init(>->gt_spin);
- gt->gt_ilimit = 100;
- gt->gt_ilimit_tries = 3;
- gt->gt_ilimit_min = 1;
gt->gt_demote_secs = 300;
gt->gt_incore_log_blocks = 1024;
gt->gt_log_flush_secs = 60;
- gt->gt_jindex_refresh_secs = 60;
gt->gt_recoverd_secs = 60;
gt->gt_logd_secs = 1;
gt->gt_quotad_secs = 5;
gt->gt_new_files_jdata = 0;
gt->gt_new_files_directio = 0;
gt->gt_max_readahead = 1 << 18;
- gt->gt_lockdump_size = 131072;
gt->gt_stall_secs = 600;
gt->gt_complain_secs = 10;
- gt->gt_reclaim_limit = 5000;
gt->gt_statfs_quantum = 30;
gt->gt_statfs_slow = 0;
}
if (!jd)
break;
+ INIT_LIST_HEAD(&jd->extent_list);
jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1, NULL);
if (!jd->jd_inode || IS_ERR(jd->jd_inode)) {
if (!jd->jd_inode)
void gfs2_jindex_free(struct gfs2_sbd *sdp)
{
- struct list_head list;
+ struct list_head list, *head;
struct gfs2_jdesc *jd;
+ struct gfs2_journal_extent *jext;
spin_lock(&sdp->sd_jindex_spin);
list_add(&list, &sdp->sd_jindex_list);
while (!list_empty(&list)) {
jd = list_entry(list.next, struct gfs2_jdesc, jd_list);
+ head = &jd->extent_list;
+ while (!list_empty(head)) {
+ jext = list_entry(head->next,
+ struct gfs2_journal_extent,
+ extent_list);
+ list_del(&jext->extent_list);
+ kfree(jext);
+ }
list_del(&jd->jd_list);
iput(jd->jd_inode);
kfree(jd);
if (error)
return error;
- gfs2_meta_cache_flush(ip);
j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
error = gfs2_find_jhead(sdp->sd_jdesc, &head);
if (error)
return;
- mutex_lock(&sdp->sd_statfs_mutex);
gfs2_trans_add_bh(l_ip->i_gl, l_bh, 1);
- mutex_unlock(&sdp->sd_statfs_mutex);
spin_lock(&sdp->sd_statfs_spin);
l_sc->sc_total += total;
if (error)
goto out_bh2;
- mutex_lock(&sdp->sd_statfs_mutex);
gfs2_trans_add_bh(l_ip->i_gl, l_bh, 1);
- mutex_unlock(&sdp->sd_statfs_mutex);
spin_lock(&sdp->sd_statfs_spin);
m_sc->sc_total += l_sc->sc_total;
static ssize_t id_show(struct gfs2_sbd *sdp, char *buf)
{
- return snprintf(buf, PAGE_SIZE, "%s\n", sdp->sd_vfs->s_id);
+ return snprintf(buf, PAGE_SIZE, "%u:%u\n",
+ MAJOR(sdp->sd_vfs->s_dev), MINOR(sdp->sd_vfs->s_dev));
}
static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf)
TUNE_ATTR(demote_secs, 0);
TUNE_ATTR(incore_log_blocks, 0);
TUNE_ATTR(log_flush_secs, 0);
-TUNE_ATTR(jindex_refresh_secs, 0);
TUNE_ATTR(quota_warn_period, 0);
TUNE_ATTR(quota_quantum, 0);
TUNE_ATTR(atime_quantum, 0);
TUNE_ATTR(max_readahead, 0);
TUNE_ATTR(complain_secs, 0);
-TUNE_ATTR(reclaim_limit, 0);
TUNE_ATTR(statfs_slow, 0);
TUNE_ATTR(new_files_jdata, 0);
TUNE_ATTR(new_files_directio, 0);
&tune_attr_demote_secs.attr,
&tune_attr_incore_log_blocks.attr,
&tune_attr_log_flush_secs.attr,
- &tune_attr_jindex_refresh_secs.attr,
&tune_attr_quota_warn_period.attr,
&tune_attr_quota_quantum.attr,
&tune_attr_atime_quantum.attr,
&tune_attr_max_readahead.attr,
&tune_attr_complain_secs.attr,
- &tune_attr_reclaim_limit.attr,
&tune_attr_statfs_slow.attr,
&tune_attr_quota_simul_sync.attr,
&tune_attr_quota_cache_secs.attr,
gfs2_log_flush(sdp, NULL);
}
-void gfs2_trans_add_gl(struct gfs2_glock *gl)
-{
- lops_add(gl->gl_sbd, &gl->gl_le);
-}
-
/**
* gfs2_trans_add_bh - Add a to-be-modified buffer to the current transaction
* @gl: the glock the buffer belongs to
void gfs2_trans_end(struct gfs2_sbd *sdp);
-void gfs2_trans_add_gl(struct gfs2_glock *gl);
void gfs2_trans_add_bh(struct gfs2_glock *gl, struct buffer_head *bh, int meta);
void gfs2_trans_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd);
void gfs2_trans_add_unrevoke(struct gfs2_sbd *sdp, u64 blkno);
projects / GitHub / LineageOS / android_kernel_samsung_universal7580.git / commitdiff