From 59a5e416d1ab543a5248a2b34d83202c4d55d132 Mon Sep 17 00:00:00 2001 From: Mark Fasheh Date: Fri, 22 Jun 2007 15:52:36 -0700 Subject: [PATCH] ocfs2: plug truncate into cached dealloc routines Signed-off-by: Mark Fasheh --- fs/ocfs2/alloc.c | 102 ++++++++++++-------------------------------- fs/ocfs2/alloc.h | 3 +- fs/ocfs2/aops.c | 1 + fs/ocfs2/suballoc.c | 13 ------ fs/ocfs2/suballoc.h | 4 -- 5 files changed, 29 insertions(+), 94 deletions(-) diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index 873bb99fc2ff..26e867087e95 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -50,6 +50,8 @@ #include "buffer_head_io.h" static void ocfs2_free_truncate_context(struct ocfs2_truncate_context *tc); +static int ocfs2_cache_extent_block_free(struct ocfs2_cached_dealloc_ctxt *ctxt, + struct ocfs2_extent_block *eb); /* * Structures which describe a path through a btree, and functions to @@ -3161,6 +3163,15 @@ out: return ret; } +static int ocfs2_cache_extent_block_free(struct ocfs2_cached_dealloc_ctxt *ctxt, + struct ocfs2_extent_block *eb) +{ + return ocfs2_cache_block_dealloc(ctxt, EXTENT_ALLOC_SYSTEM_INODE, + le16_to_cpu(eb->h_suballoc_slot), + le64_to_cpu(eb->h_blkno), + le16_to_cpu(eb->h_suballoc_bit)); +} + /* This function will figure out whether the currently last extent * block will be deleted, and if it will, what the new last extent * block will be so we can update his h_next_leaf_blk field, as well @@ -3442,27 +3453,10 @@ delete: BUG_ON(le32_to_cpu(el->l_recs[0].e_cpos)); BUG_ON(le64_to_cpu(el->l_recs[0].e_blkno)); - if (le16_to_cpu(eb->h_suballoc_slot) == 0) { - /* - * This code only understands how to - * lock the suballocator in slot 0, - * which is fine because allocation is - * only ever done out of that - * suballocator too. A future version - * might change that however, so avoid - * a free if we don't know how to - * handle it. This way an fs incompat - * bit will not be necessary. - */ - ret = ocfs2_free_extent_block(handle, - tc->tc_ext_alloc_inode, - tc->tc_ext_alloc_bh, - eb); - - /* An error here is not fatal. */ - if (ret < 0) - mlog_errno(ret); - } + ret = ocfs2_cache_extent_block_free(&tc->tc_dealloc, eb); + /* An error here is not fatal. */ + if (ret < 0) + mlog_errno(ret); } else { deleted_eb = 0; } @@ -3965,6 +3959,8 @@ bail: if (handle) ocfs2_commit_trans(osb, handle); + ocfs2_run_deallocs(osb, &tc->tc_dealloc); + ocfs2_free_path(path); /* This will drop the ext_alloc cluster lock for us */ @@ -3975,23 +3971,18 @@ bail: } /* - * Expects the inode to already be locked. This will figure out which - * inodes need to be locked and will put them on the returned truncate - * context. + * Expects the inode to already be locked. */ int ocfs2_prepare_truncate(struct ocfs2_super *osb, struct inode *inode, struct buffer_head *fe_bh, struct ocfs2_truncate_context **tc) { - int status, metadata_delete, i; + int status; unsigned int new_i_clusters; struct ocfs2_dinode *fe; struct ocfs2_extent_block *eb; - struct ocfs2_extent_list *el; struct buffer_head *last_eb_bh = NULL; - struct inode *ext_alloc_inode = NULL; - struct buffer_head *ext_alloc_bh = NULL; mlog_entry_void(); @@ -4011,12 +4002,9 @@ int ocfs2_prepare_truncate(struct ocfs2_super *osb, mlog_errno(status); goto bail; } + ocfs2_init_dealloc_ctxt(&(*tc)->tc_dealloc); - metadata_delete = 0; if (fe->id2.i_list.l_tree_depth) { - /* If we have a tree, then the truncate may result in - * metadata deletes. Figure this out from the - * rightmost leaf block.*/ status = ocfs2_read_block(osb, le64_to_cpu(fe->i_last_eb_blk), &last_eb_bh, OCFS2_BH_CACHED, inode); if (status < 0) { @@ -4031,43 +4019,10 @@ int ocfs2_prepare_truncate(struct ocfs2_super *osb, status = -EIO; goto bail; } - el = &(eb->h_list); - - i = 0; - if (ocfs2_is_empty_extent(&el->l_recs[0])) - i = 1; - /* - * XXX: Should we check that next_free_rec contains - * the extent? - */ - if (le32_to_cpu(el->l_recs[i].e_cpos) >= new_i_clusters) - metadata_delete = 1; } (*tc)->tc_last_eb_bh = last_eb_bh; - if (metadata_delete) { - mlog(0, "Will have to delete metadata for this trunc. " - "locking allocator.\n"); - ext_alloc_inode = ocfs2_get_system_file_inode(osb, EXTENT_ALLOC_SYSTEM_INODE, 0); - if (!ext_alloc_inode) { - status = -ENOMEM; - mlog_errno(status); - goto bail; - } - - mutex_lock(&ext_alloc_inode->i_mutex); - (*tc)->tc_ext_alloc_inode = ext_alloc_inode; - - status = ocfs2_meta_lock(ext_alloc_inode, &ext_alloc_bh, 1); - if (status < 0) { - mlog_errno(status); - goto bail; - } - (*tc)->tc_ext_alloc_bh = ext_alloc_bh; - (*tc)->tc_ext_alloc_locked = 1; - } - status = 0; bail: if (status < 0) { @@ -4081,16 +4036,13 @@ bail: static void ocfs2_free_truncate_context(struct ocfs2_truncate_context *tc) { - if (tc->tc_ext_alloc_inode) { - if (tc->tc_ext_alloc_locked) - ocfs2_meta_unlock(tc->tc_ext_alloc_inode, 1); - - mutex_unlock(&tc->tc_ext_alloc_inode->i_mutex); - iput(tc->tc_ext_alloc_inode); - } - - if (tc->tc_ext_alloc_bh) - brelse(tc->tc_ext_alloc_bh); + /* + * The caller is responsible for completing deallocation + * before freeing the context. + */ + if (tc->tc_dealloc.c_first_suballocator != NULL) + mlog(ML_NOTICE, + "Truncate completion has non-empty dealloc context\n"); if (tc->tc_last_eb_bh) brelse(tc->tc_last_eb_bh); diff --git a/fs/ocfs2/alloc.h b/fs/ocfs2/alloc.h index 01db0adc2150..cb02e53b593c 100644 --- a/fs/ocfs2/alloc.h +++ b/fs/ocfs2/alloc.h @@ -83,8 +83,7 @@ int ocfs2_run_deallocs(struct ocfs2_super *osb, struct ocfs2_cached_dealloc_ctxt *ctxt); struct ocfs2_truncate_context { - struct inode *tc_ext_alloc_inode; - struct buffer_head *tc_ext_alloc_bh; + struct ocfs2_cached_dealloc_ctxt tc_dealloc; int tc_ext_alloc_locked; /* is it cluster locked? */ /* these get destroyed once it's passed to ocfs2_commit_truncate. */ struct buffer_head *tc_last_eb_bh; diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c index e8d16ae12ef0..510bf84c9cf5 100644 --- a/fs/ocfs2/aops.c +++ b/fs/ocfs2/aops.c @@ -1498,6 +1498,7 @@ int ocfs2_write_end_nolock(struct address_space *mapping, ocfs2_journal_dirty(handle, wc->w_di_bh); ocfs2_commit_trans(osb, handle); + ocfs2_free_write_ctxt(wc); return copied; diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c index 6788f2f1a667..82bf12f887a6 100644 --- a/fs/ocfs2/suballoc.c +++ b/fs/ocfs2/suballoc.c @@ -1708,19 +1708,6 @@ int ocfs2_free_dinode(handle_t *handle, inode_alloc_bh, bit, bg_blkno, 1); } -int ocfs2_free_extent_block(handle_t *handle, - struct inode *eb_alloc_inode, - struct buffer_head *eb_alloc_bh, - struct ocfs2_extent_block *eb) -{ - u64 blk = le64_to_cpu(eb->h_blkno); - u16 bit = le16_to_cpu(eb->h_suballoc_bit); - u64 bg_blkno = ocfs2_which_suballoc_group(blk, bit); - - return ocfs2_free_suballoc_bits(handle, eb_alloc_inode, eb_alloc_bh, - bit, bg_blkno, 1); -} - int ocfs2_free_clusters(handle_t *handle, struct inode *bitmap_inode, struct buffer_head *bitmap_bh, diff --git a/fs/ocfs2/suballoc.h b/fs/ocfs2/suballoc.h index 7bc4819db4db..f212dc01a84b 100644 --- a/fs/ocfs2/suballoc.h +++ b/fs/ocfs2/suballoc.h @@ -96,10 +96,6 @@ int ocfs2_free_dinode(handle_t *handle, struct inode *inode_alloc_inode, struct buffer_head *inode_alloc_bh, struct ocfs2_dinode *di); -int ocfs2_free_extent_block(handle_t *handle, - struct inode *eb_alloc_inode, - struct buffer_head *eb_alloc_bh, - struct ocfs2_extent_block *eb); int ocfs2_free_clusters(handle_t *handle, struct inode *bitmap_inode, struct buffer_head *bitmap_bh, -- 2.20.1