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| author | Pranay Kr. Srivastava <[email protected]> | 2016-07-04 14:24:52 +0000 |
|---|---|---|
| committer | Theodore Ts'o <[email protected]> | 2016-07-04 14:24:52 +0000 |
| commit | 4743f83990614af6adb09ea7aa3c37b78c4031ab (patch) | |
| tree | 86784086a26c2d2181270426145540310de8acd0 /fs/jbd2/commit.c | |
| parent | ext4: fix deadlock during page writeback (diff) | |
| download | kernel-4743f83990614af6adb09ea7aa3c37b78c4031ab.tar.gz kernel-4743f83990614af6adb09ea7aa3c37b78c4031ab.zip | |
ext4: Fix WARN_ON_ONCE in ext4_commit_super()
If there are racing calls to ext4_commit_super() it's possible for
another writeback of the superblock to result in the buffer being
marked with an error after we check if the buffer is marked as having
a write error and the buffer up-to-date flag is set again. If that
happens mark_buffer_dirty() can end up throwing a WARN_ON_ONCE.
Fix this by moving this check to write before we call
write_buffer_dirty(), and keeping the buffer locked during this whole
sequence.
Signed-off-by: Pranay Kr. Srivastava <[email protected]>
Signed-off-by: Theodore Ts'o <[email protected]>
Diffstat (limited to 'fs/jbd2/commit.c')
0 files changed, 0 insertions, 0 deletions