From 98ea3f50bcc97689cc0e1fa3b6733f03aeb8fef4 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Tue, 29 Dec 2009 21:51:15 +0100 Subject: 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 Signed-off-by: Frederic Weisbecker Cc: Chris Mason Cc: Ingo Molnar --- fs/reiserfs/journal.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) (limited to 'fs/reiserfs') 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 */ -- cgit v1.2.3-59-g8ed1b