diff options
| author | Peng Tao <bergwolf@gmail.com> | 2009-08-10 23:05:28 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-12-14 08:06:06 -0800 |
| commit | 8be78bc620adf972f6d33bc6202ba1b85fdd4db5 (patch) | |
| tree | 7751534cf23d7586943578d02026c962bd869438 | |
| parent | 65ccfef90fb74d4afd2414bc389a29f1a2dd94db (diff) | |
ext4: fix journal ref count in move_extent_par_page
(cherry picked from commit 91cc219ad963731191247c5f2db4118be2bc341a)
move_extent_par_page calls a_ops->write_begin() to increase journal
handler's reference count. However, if either mext_replace_branches()
or ext4_get_block fails, the increased reference count isn't
decreased. This will cause a later attempt to umount of the fs to hang
forever. The patch addresses the issue by calling ext4_journal_stop()
if page is not NULL (which means a_ops->write_end() isn't invoked).
Signed-off-by: Peng Tao <bergwolf@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | fs/ext4/move_extent.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c index bbf2dd9404dc..5821e0bee917 100644 --- a/fs/ext4/move_extent.c +++ b/fs/ext4/move_extent.c @@ -871,6 +871,7 @@ out: if (PageLocked(page)) unlock_page(page); page_cache_release(page); + ext4_journal_stop(handle); } out2: ext4_journal_stop(handle); |