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authorYounger Liu <younger.liu@huawei.com>2013-07-03 15:00:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-03 16:07:24 -0700
commitea45466aec98b68faaf354901c42e281e58af50a (patch)
tree1b14611557df4312b0e70df80e5162a00432818c
parent096b2ef83c87d7a7e0d2838f7f1391c74fdad0e6 (diff)
ocfs2: need rollback when journal_access failed in ocfs2_orphan_add()
While adding a file into orphan dir in ocfs2_orphan_add(), it calls __ocfs2_add_entry() before ocfs2_journal_access_di(). If ocfs2_journal_access_di() failed, the file is added into orphan dir, and orphan dir dinode updated, but file dinode has not been updated. Accordingly, the data is not consistent between file dinode and orphan dir. So, need to call ocfs2_journal_access_di() before __ocfs2_add_entry(), and if ocfs2_journal_access_di() failed, orphan_fe and orphan_dir_inode->i_nlink need rollback. This bug was added by 3939fda4 ("Ocfs2: Journaling i_flags and i_orphaned_slot when adding inode to orphan dir."). Signed-off-by: Younger Liu <younger.liu@huawei.com> Acked-by: Jeff Liu <jeff.liu@oracle.com> Cc: Sunil Mushran <sunil.mushran@gmail.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/ocfs2/namei.c41
1 files changed, 23 insertions, 18 deletions
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 75964addfe32..30842f5cf590 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -2012,6 +2012,21 @@ static int ocfs2_orphan_add(struct ocfs2_super *osb,
goto leave;
}
+ /*
+ * We're going to journal the change of i_flags and i_orphaned_slot.
+ * It's safe anyway, though some callers may duplicate the journaling.
+ * Journaling within the func just make the logic look more
+ * straightforward.
+ */
+ status = ocfs2_journal_access_di(handle,
+ INODE_CACHE(inode),
+ fe_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (status < 0) {
+ mlog_errno(status);
+ goto leave;
+ }
+
/* we're a cluster, and nlink can change on disk from
* underneath us... */
orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data;
@@ -2026,22 +2041,7 @@ static int ocfs2_orphan_add(struct ocfs2_super *osb,
orphan_dir_bh, lookup);
if (status < 0) {
mlog_errno(status);
- goto leave;
- }
-
- /*
- * We're going to journal the change of i_flags and i_orphaned_slot.
- * It's safe anyway, though some callers may duplicate the journaling.
- * Journaling within the func just make the logic look more
- * straightforward.
- */
- status = ocfs2_journal_access_di(handle,
- INODE_CACHE(inode),
- fe_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (status < 0) {
- mlog_errno(status);
- goto leave;
+ goto rollback;
}
fe->i_flags |= cpu_to_le32(OCFS2_ORPHANED_FL);
@@ -2057,11 +2057,16 @@ static int ocfs2_orphan_add(struct ocfs2_super *osb,
trace_ocfs2_orphan_add_end((unsigned long long)OCFS2_I(inode)->ip_blkno,
osb->slot_num);
+rollback:
+ if (status < 0) {
+ if (S_ISDIR(inode->i_mode))
+ ocfs2_add_links_count(orphan_fe, -1);
+ set_nlink(orphan_dir_inode, ocfs2_read_links_count(orphan_fe));
+ }
+
leave:
brelse(orphan_dir_bh);
- if (status)
- mlog_errno(status);
return status;
}