kernel_optimize_test/fs/jbd2
Daeho Jeong 564bc40252 ext4, jbd2: add REQ_FUA flag when recording an error in the superblock
When an error condition is detected, an error status should be recorded into
superblocks of EXT4 or JBD2. However, the write request is submitted now
without REQ_FUA flag, even in "barrier=1" mode, which is followed by
panic() function in "errors=panic" mode. On mobile devices which make
whole system reset as soon as kernel panic occurs, this write request
containing an error flag will disappear just from storage cache without
written to the physical cells. Therefore, when next start, even forever,
the error flag cannot be shown in both superblocks, and e2fsck cannot fix
the filesystem problems automatically, unless e2fsck is executed in
force checking mode.

[ Changed use test_opt(sb, BARRIER) of checking the journal flags -- TYT ]

Signed-off-by: Daeho Jeong <daeho.jeong@samsung.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2015-07-23 09:46:11 -04:00
..
checkpoint.c jbd2: fix ocfs2 corrupt when updating journal superblock fails 2015-06-15 14:36:01 -04:00
commit.c jbd2: fix descriptor block size handling errors with journal_csum 2014-08-28 22:22:29 -04:00
journal.c ext4, jbd2: add REQ_FUA flag when recording an error in the superblock 2015-07-23 09:46:11 -04:00
Kconfig jbd2: remove debug dependency on debug_fs and update Kconfig help text 2013-06-12 23:07:51 -04:00
Makefile
recovery.c jbd2: fix r_count overflows leading to buffer overflow in journal recovery 2015-05-14 19:11:50 -04:00
revoke.c jbd2: get rid of open coded allocation retry loop 2015-06-15 15:45:58 -04:00
transaction.c jbd2: speedup jbd2_journal_dirty_metadata() 2015-07-12 18:11:30 -04:00