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| author |   Jan Kara <jack@suse.cz> | 2012-03-13 15:43:04 -0400 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2012-03-13 15:43:04 -0400 |
| commit | a78bb11d7acd525623c6a0c2ff4e213d527573fa (patch) | |
| tree | 6e2e228cc51a2138046b499d6d9002f35f6d56d0 /fs/jbd2/checkpoint.c | |
| parent | jbd2: split updating of journal superblock and marking journal empty (diff) | |
| download | wireguard-linux-a78bb11d7acd525623c6a0c2ff4e213d527573fa.tar.xz wireguard-linux-a78bb11d7acd525623c6a0c2ff4e213d527573fa.zip | |
jbd2: protect all log tail updates with j_checkpoint_mutex
There are some log tail updates that are not protected by j_checkpoint_mutex.
Some of these are harmless because they happen during startup or shutdown but
updates in jbd2_journal_commit_transaction() and jbd2_journal_flush() can
really race with other log tail updates (e.g. someone doing
jbd2_journal_flush() with someone running jbd2_cleanup_journal_tail()). So
protect all log tail updates with j_checkpoint_mutex.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/jbd2/checkpoint.c')
0 files changed, 0 insertions, 0 deletions