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 lvb.o main.o meta_io.o \
mount.o ondisk.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 page.o quota.o \
+ ops_fstype.o ops_inode.o ops_super.o ops_vm.o quota.o \
recovery.o rgrp.o super.o sys.o trans.o util.o
obj-$(CONFIG_GFS2_FS_LOCKING_NOLOCK) += locking/nolock/
#include "glock.h"
#include "inode.h"
#include "meta_io.h"
-#include "page.h"
#include "quota.h"
#include "rgrp.h"
#include "trans.h"
#include "dir.h"
#include "util.h"
+#include "ops_address.h"
/* This doesn't need to be that large as max 64 bit pointers in a 4k
* block is 512, so __u16 is fine for that. It saves stack space to
return error;
}
+
+/**
+ * gfs2_block_truncate_page - Deal with zeroing out data for truncate
+ *
+ * This is partly borrowed from ext3.
+ */
+static int gfs2_block_truncate_page(struct address_space *mapping)
+{
+ 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);
+ unsigned blocksize, iblock, length, pos;
+ struct buffer_head *bh;
+ struct page *page;
+ void *kaddr;
+ int err;
+
+ page = grab_cache_page(mapping, index);
+ if (!page)
+ return 0;
+
+ blocksize = inode->i_sb->s_blocksize;
+ length = blocksize - (offset & (blocksize - 1));
+ iblock = index << (PAGE_CACHE_SHIFT - inode->i_sb->s_blocksize_bits);
+
+ if (!page_has_buffers(page))
+ create_empty_buffers(page, blocksize, 0);
+
+ /* Find the buffer that contains "offset" */
+ bh = page_buffers(page);
+ pos = blocksize;
+ while (offset >= pos) {
+ bh = bh->b_this_page;
+ iblock++;
+ pos += blocksize;
+ }
+
+ err = 0;
+
+ if (!buffer_mapped(bh)) {
+ gfs2_get_block(inode, iblock, bh, 0);
+ /* unmapped? It's a hole - nothing to do */
+ if (!buffer_mapped(bh))
+ goto unlock;
+ }
+
+ /* Ok, it's mapped. Make sure it's up-to-date */
+ if (PageUptodate(page))
+ set_buffer_uptodate(bh);
+
+ if (!buffer_uptodate(bh)) {
+ err = -EIO;
+ ll_rw_block(READ, 1, &bh);
+ wait_on_buffer(bh);
+ /* Uhhuh. Read error. Complain and punt. */
+ if (!buffer_uptodate(bh))
+ goto unlock;
+ }
+
+ if (sdp->sd_args.ar_data == GFS2_DATA_ORDERED || gfs2_is_jdata(ip))
+ gfs2_trans_add_bh(ip->i_gl, bh, 0);
+
+ kaddr = kmap_atomic(page, KM_USER0);
+ memset(kaddr + offset, 0, length);
+ flush_dcache_page(page);
+ kunmap_atomic(kaddr, KM_USER0);
+
+unlock:
+ unlock_page(page);
+ page_cache_release(page);
+ return err;
+}
+
static int trunc_start(struct gfs2_inode *ip, uint64_t size)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
#include "inode.h"
#include "log.h"
#include "meta_io.h"
-#include "page.h"
#include "recovery.h"
#include "rgrp.h"
#include "util.h"
+
+/**
+ * gfs2_pte_inval - Sync and invalidate all PTEs associated with a glock
+ * @gl: the glock
+ *
+ */
+
+static void gfs2_pte_inval(struct gfs2_glock *gl)
+{
+ struct gfs2_inode *ip;
+ struct inode *inode;
+
+ ip = gl->gl_object;
+ inode = &ip->i_inode;
+ if (!ip || !S_ISREG(ip->i_di.di_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);
+}
+
+/**
+ * gfs2_page_inval - Invalidate all pages associated with a glock
+ * @gl: the glock
+ *
+ */
+
+static void gfs2_page_inval(struct gfs2_glock *gl)
+{
+ struct gfs2_inode *ip;
+ struct inode *inode;
+
+ ip = gl->gl_object;
+ inode = &ip->i_inode;
+ if (!ip || !S_ISREG(ip->i_di.di_mode))
+ return;
+
+ truncate_inode_pages(inode->i_mapping, 0);
+ gfs2_assert_withdraw(GFS2_SB(&ip->i_inode), !inode->i_mapping->nrpages);
+ clear_bit(GIF_PAGED, &ip->i_flags);
+}
+
+/**
+ * gfs2_page_sync - Sync the data pages (not metadata) associated with a glock
+ * @gl: the glock
+ * @flags: DIO_START | DIO_WAIT
+ *
+ * Syncs data (not metadata) for a regular file.
+ * No-op for all other types.
+ */
+
+static void gfs2_page_sync(struct gfs2_glock *gl, int flags)
+{
+ struct gfs2_inode *ip;
+ struct inode *inode;
+ struct address_space *mapping;
+ int error = 0;
+
+ ip = gl->gl_object;
+ inode = &ip->i_inode;
+ if (!ip || !S_ISREG(ip->i_di.di_mode))
+ return;
+
+ mapping = inode->i_mapping;
+
+ if (flags & DIO_START)
+ filemap_fdatawrite(mapping);
+ if (!error && (flags & DIO_WAIT))
+ error = filemap_fdatawait(mapping);
+
+ /* Put back any errors cleared by filemap_fdatawait()
+ so they can be caught by someone who can pass them
+ up to user space. */
+
+ if (error == -ENOSPC)
+ set_bit(AS_ENOSPC, &mapping->flags);
+ else if (error)
+ set_bit(AS_EIO, &mapping->flags);
+
+}
+
/**
* meta_go_sync - sync out the metadata for this glock
* @gl: the glock
#include "log.h"
#include "meta_io.h"
#include "ops_address.h"
-#include "page.h"
#include "quota.h"
#include "trans.h"
#include "rgrp.h"
#include "util.h"
#include "glops.h"
+
+static void gfs2_page_add_databufs(struct gfs2_inode *ip, struct page *page,
+ unsigned int from, unsigned int to)
+{
+ struct buffer_head *head = page_buffers(page);
+ unsigned int bsize = head->b_size;
+ struct buffer_head *bh;
+ unsigned int start, end;
+
+ for (bh = head, start = 0; bh != head || !start;
+ bh = bh->b_this_page, start = end) {
+ end = start + bsize;
+ if (end <= from || start >= to)
+ continue;
+ gfs2_trans_add_bh(ip->i_gl, bh, 0);
+ }
+}
+
/**
* gfs2_get_block - Fills in a buffer head with details about a block
* @inode: The inode
#include "meta_io.h"
#include "ops_dentry.h"
#include "ops_inode.h"
-#include "page.h"
#include "quota.h"
#include "rgrp.h"
#include "trans.h"
#include "log.h"
#include "mount.h"
#include "ops_super.h"
-#include "page.h"
#include "quota.h"
#include "recovery.h"
#include "rgrp.h"
#include "glock.h"
#include "inode.h"
#include "ops_vm.h"
-#include "page.h"
#include "quota.h"
#include "rgrp.h"
#include "trans.h"
+++ /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 v.2.
- */
-
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/completion.h>
-#include <linux/buffer_head.h>
-#include <linux/pagemap.h>
-#include <linux/mm.h>
-#include <linux/gfs2_ondisk.h>
-
-#include "gfs2.h"
-#include "lm_interface.h"
-#include "incore.h"
-#include "bmap.h"
-#include "inode.h"
-#include "page.h"
-#include "trans.h"
-#include "ops_address.h"
-#include "util.h"
-
-/**
- * gfs2_pte_inval - Sync and invalidate all PTEs associated with a glock
- * @gl: the glock
- *
- */
-
-void gfs2_pte_inval(struct gfs2_glock *gl)
-{
- struct gfs2_inode *ip;
- struct inode *inode;
-
- ip = gl->gl_object;
- inode = &ip->i_inode;
- if (!ip || !S_ISREG(ip->i_di.di_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);
-}
-
-/**
- * gfs2_page_inval - Invalidate all pages associated with a glock
- * @gl: the glock
- *
- */
-
-void gfs2_page_inval(struct gfs2_glock *gl)
-{
- struct gfs2_inode *ip;
- struct inode *inode;
-
- ip = gl->gl_object;
- inode = &ip->i_inode;
- if (!ip || !S_ISREG(ip->i_di.di_mode))
- return;
-
- truncate_inode_pages(inode->i_mapping, 0);
- gfs2_assert_withdraw(GFS2_SB(&ip->i_inode), !inode->i_mapping->nrpages);
- clear_bit(GIF_PAGED, &ip->i_flags);
-}
-
-/**
- * gfs2_page_sync - Sync the data pages (not metadata) associated with a glock
- * @gl: the glock
- * @flags: DIO_START | DIO_WAIT
- *
- * Syncs data (not metadata) for a regular file.
- * No-op for all other types.
- */
-
-void gfs2_page_sync(struct gfs2_glock *gl, int flags)
-{
- struct gfs2_inode *ip;
- struct inode *inode;
- struct address_space *mapping;
- int error = 0;
-
- ip = gl->gl_object;
- inode = &ip->i_inode;
- if (!ip || !S_ISREG(ip->i_di.di_mode))
- return;
-
- mapping = inode->i_mapping;
-
- if (flags & DIO_START)
- filemap_fdatawrite(mapping);
- if (!error && (flags & DIO_WAIT))
- error = filemap_fdatawait(mapping);
-
- /* Put back any errors cleared by filemap_fdatawait()
- so they can be caught by someone who can pass them
- up to user space. */
-
- if (error == -ENOSPC)
- set_bit(AS_ENOSPC, &mapping->flags);
- else if (error)
- set_bit(AS_EIO, &mapping->flags);
-
-}
-
-/**
- * gfs2_block_truncate_page - Deal with zeroing out data for truncate
- *
- * This is partly borrowed from ext3.
- */
-int gfs2_block_truncate_page(struct address_space *mapping)
-{
- 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);
- unsigned blocksize, iblock, length, pos;
- struct buffer_head *bh;
- struct page *page;
- void *kaddr;
- int err;
-
- page = grab_cache_page(mapping, index);
- if (!page)
- return 0;
-
- blocksize = inode->i_sb->s_blocksize;
- length = blocksize - (offset & (blocksize - 1));
- iblock = index << (PAGE_CACHE_SHIFT - inode->i_sb->s_blocksize_bits);
-
- if (!page_has_buffers(page))
- create_empty_buffers(page, blocksize, 0);
-
- /* Find the buffer that contains "offset" */
- bh = page_buffers(page);
- pos = blocksize;
- while (offset >= pos) {
- bh = bh->b_this_page;
- iblock++;
- pos += blocksize;
- }
-
- err = 0;
-
- if (!buffer_mapped(bh)) {
- gfs2_get_block(inode, iblock, bh, 0);
- /* unmapped? It's a hole - nothing to do */
- if (!buffer_mapped(bh))
- goto unlock;
- }
-
- /* Ok, it's mapped. Make sure it's up-to-date */
- if (PageUptodate(page))
- set_buffer_uptodate(bh);
-
- if (!buffer_uptodate(bh)) {
- err = -EIO;
- ll_rw_block(READ, 1, &bh);
- wait_on_buffer(bh);
- /* Uhhuh. Read error. Complain and punt. */
- if (!buffer_uptodate(bh))
- goto unlock;
- }
-
- if (sdp->sd_args.ar_data == GFS2_DATA_ORDERED || gfs2_is_jdata(ip))
- gfs2_trans_add_bh(ip->i_gl, bh, 0);
-
- kaddr = kmap_atomic(page, KM_USER0);
- memset(kaddr + offset, 0, length);
- flush_dcache_page(page);
- kunmap_atomic(kaddr, KM_USER0);
-
-unlock:
- unlock_page(page);
- page_cache_release(page);
- return err;
-}
-
-void gfs2_page_add_databufs(struct gfs2_inode *ip, struct page *page,
- unsigned int from, unsigned int to)
-{
- struct buffer_head *head = page_buffers(page);
- unsigned int bsize = head->b_size;
- struct buffer_head *bh;
- unsigned int start, end;
-
- for (bh = head, start = 0; bh != head || !start;
- bh = bh->b_this_page, start = end) {
- end = start + bsize;
- if (end <= from || start >= to)
- continue;
- gfs2_trans_add_bh(ip->i_gl, bh, 0);
- }
-}
-
+++ /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 v.2.
- */
-
-#ifndef __PAGE_DOT_H__
-#define __PAGE_DOT_H__
-
-void gfs2_pte_inval(struct gfs2_glock *gl);
-void gfs2_page_inval(struct gfs2_glock *gl);
-void gfs2_page_sync(struct gfs2_glock *gl, int flags);
-
-int gfs2_block_truncate_page(struct address_space *mapping);
-void gfs2_page_add_databufs(struct gfs2_inode *ip, struct page *page,
- unsigned int from, unsigned int to);
-
-#endif /* __PAGE_DOT_H__ */
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff