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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2009-12-29 21:51:15 +0100 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2009-12-29 22:34:59 +0100 |
| commit | 98ea3f50bcc97689cc0e1fa3b6733f03aeb8fef4 (patch) | |
| tree | d909a47008ed466e5119f21f366934be5a6276b8 /fs/reiserfs/journal.c | |
| parent | 47376ceba54600cec4dd9e7c4fe8b98e4269633a (diff) | |
| download | lwn-98ea3f50bcc97689cc0e1fa3b6733f03aeb8fef4.tar.gz lwn-98ea3f50bcc97689cc0e1fa3b6733f03aeb8fef4.zip | |
reiserfs: Fix remaining in-reclaim-fs <-> reclaim-fs-on locking inversion
Commit 500f5a0bf5f0624dae34307010e240ec090e4cde
(reiserfs: Fix possible recursive lock) fixed a vmalloc under reiserfs
lock that triggered a lockdep warning because of a
IN-FS-RECLAIM <-> RECLAIM-FS-ON locking dependency inversion.
But this patch has ommitted another vmalloc call in the same path
that allocates the journal. Relax the lock for this one too.
Reported-by: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'fs/reiserfs/journal.c')
| -rw-r--r-- | fs/reiserfs/journal.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c index 2f8a7e7b8dab..a059879667b1 100644 --- a/fs/reiserfs/journal.c +++ b/fs/reiserfs/journal.c @@ -2758,11 +2758,18 @@ int journal_init(struct super_block *sb, const char *j_dev_name, struct reiserfs_journal *journal; struct reiserfs_journal_list *jl; char b[BDEVNAME_SIZE]; + int ret; + /* + * Unlock here to avoid various RECLAIM-FS-ON <-> IN-RECLAIM-FS + * dependency inversion warnings. + */ + reiserfs_write_unlock(sb); journal = SB_JOURNAL(sb) = vmalloc(sizeof(struct reiserfs_journal)); if (!journal) { reiserfs_warning(sb, "journal-1256", "unable to get memory for journal structure"); + reiserfs_write_lock(sb); return 1; } memset(journal, 0, sizeof(struct reiserfs_journal)); @@ -2771,10 +2778,12 @@ int journal_init(struct super_block *sb, const char *j_dev_name, INIT_LIST_HEAD(&journal->j_working_list); INIT_LIST_HEAD(&journal->j_journal_list); journal->j_persistent_trans = 0; - if (reiserfs_allocate_list_bitmaps(sb, - journal->j_list_bitmap, - reiserfs_bmap_count(sb))) + ret = reiserfs_allocate_list_bitmaps(sb, journal->j_list_bitmap, + reiserfs_bmap_count(sb)); + reiserfs_write_lock(sb); + if (ret) goto free_and_return; + allocate_bitmap_nodes(sb); /* reserved for journal area support */ |