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| author | Jan Kara <jack@suse.cz> | 2009-06-02 14:24:03 +0200 |
|---|---|---|
| committer | Joel Becker <joel.becker@oracle.com> | 2009-06-03 19:14:30 -0700 |
| commit | edd45c08499a3e9d4c25431cd2b6a9ce5f692c92 (patch) | |
| tree | 13016ad69aa059604c1d71809d66a92f60124fd4 /fs/ocfs2 | |
| parent | 80d73f15d12f087f3fe074f8a4d6e5c5624f2b47 (diff) | |
| download | linux-edd45c08499a3e9d4c25431cd2b6a9ce5f692c92.tar.gz linux-edd45c08499a3e9d4c25431cd2b6a9ce5f692c92.tar.bz2 linux-edd45c08499a3e9d4c25431cd2b6a9ce5f692c92.zip | |
ocfs2: Correct ordering of ip_alloc_sem and localloc locks for directories
We use ordering ip_alloc_sem -> local alloc locks in ocfs2_write_begin().
So change lock ordering in ocfs2_extend_dir() and ocfs2_expand_inline_dir()
to also use this lock ordering.
Signed-off-by: Jan Kara <jack@suse.cz>
Acked-by: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Diffstat (limited to 'fs/ocfs2')
| -rw-r--r-- | fs/ocfs2/dir.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c index c5752305627c..b358f3bf896d 100644 --- a/fs/ocfs2/dir.c +++ b/fs/ocfs2/dir.c @@ -2900,6 +2900,8 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh, alloc = ocfs2_clusters_for_bytes(sb, bytes); dx_alloc = 0; + down_write(&oi->ip_alloc_sem); + if (ocfs2_supports_indexed_dirs(osb)) { credits += ocfs2_add_dir_index_credits(sb); @@ -2940,8 +2942,6 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh, goto out; } - down_write(&oi->ip_alloc_sem); - /* * Prepare for worst case allocation scenario of two separate * extents in the unindexed tree. @@ -2953,7 +2953,7 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh, if (IS_ERR(handle)) { ret = PTR_ERR(handle); mlog_errno(ret); - goto out_sem; + goto out; } if (vfs_dq_alloc_space_nodirty(dir, @@ -3172,10 +3172,8 @@ out_commit: ocfs2_commit_trans(osb, handle); -out_sem: - up_write(&oi->ip_alloc_sem); - out: + up_write(&oi->ip_alloc_sem); if (data_ac) ocfs2_free_alloc_context(data_ac); if (meta_ac) @@ -3322,11 +3320,15 @@ static int ocfs2_extend_dir(struct ocfs2_super *osb, brelse(new_bh); new_bh = NULL; + down_write(&OCFS2_I(dir)->ip_alloc_sem); + drop_alloc_sem = 1; dir_i_size = i_size_read(dir); credits = OCFS2_SIMPLE_DIR_EXTEND_CREDITS; goto do_extend; } + down_write(&OCFS2_I(dir)->ip_alloc_sem); + drop_alloc_sem = 1; dir_i_size = i_size_read(dir); mlog(0, "extending dir %llu (i_size = %lld)\n", (unsigned long long)OCFS2_I(dir)->ip_blkno, dir_i_size); @@ -3370,9 +3372,6 @@ do_extend: credits++; /* For attaching the new dirent block to the * dx_root */ - down_write(&OCFS2_I(dir)->ip_alloc_sem); - drop_alloc_sem = 1; - handle = ocfs2_start_trans(osb, credits); if (IS_ERR(handle)) { status = PTR_ERR(handle); @@ -3435,10 +3434,10 @@ bail_bh: *new_de_bh = new_bh; get_bh(*new_de_bh); bail: - if (drop_alloc_sem) - up_write(&OCFS2_I(dir)->ip_alloc_sem); if (handle) ocfs2_commit_trans(osb, handle); + if (drop_alloc_sem) + up_write(&OCFS2_I(dir)->ip_alloc_sem); if (data_ac) ocfs2_free_alloc_context(data_ac); |