diff options
| author | Jan Kara <jack@suse.com> | 2015-10-17 22:35:09 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2015-10-17 22:35:09 -0400 |
| commit | 33d14975e5ac469963d5d63856b61698ad0bff07 (patch) | |
| tree | faa2e7fab1cc1284ab2bc8537464707d5a61c4c1 /fs/jbd2 | |
| parent | 9c02ac97989d544c89f049e8add7149aaea01671 (diff) | |
| download | lwn-33d14975e5ac469963d5d63856b61698ad0bff07.tar.gz lwn-33d14975e5ac469963d5d63856b61698ad0bff07.zip | |
jbd2: fix checkpoint list cleanup
Unlike comments and expectation of callers journal_clean_one_cp_list()
returned 1 not only if it freed the transaction but also if it freed
some buffers in the transaction. That could make
__jbd2_journal_clean_checkpoint_list() skip processing
t_checkpoint_io_list and continue with processing the next transaction.
This is mostly a cosmetic issue since the only result is we can
sometimes free less memory than we could. But it's still worth fixing.
Fix journal_clean_one_cp_list() to return 1 only if the transaction was
really freed.
Fixes: 50849db32a9f529235a84bcc84a6b8e631b1d0ec
Signed-off-by: Jan Kara <jack@suse.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
Diffstat (limited to 'fs/jbd2')
| -rw-r--r-- | fs/jbd2/checkpoint.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c index 8c44654ce274..684996c8a3a4 100644 --- a/fs/jbd2/checkpoint.c +++ b/fs/jbd2/checkpoint.c @@ -427,7 +427,6 @@ static int journal_clean_one_cp_list(struct journal_head *jh, bool destroy) struct journal_head *last_jh; struct journal_head *next_jh = jh; int ret; - int freed = 0; if (!jh) return 0; @@ -441,10 +440,9 @@ static int journal_clean_one_cp_list(struct journal_head *jh, bool destroy) else ret = __jbd2_journal_remove_checkpoint(jh) + 1; if (!ret) - return freed; + return 0; if (ret == 2) return 1; - freed = 1; /* * This function only frees up some memory * if possible so we dont have an obligation @@ -452,10 +450,10 @@ static int journal_clean_one_cp_list(struct journal_head *jh, bool destroy) * requested: */ if (need_resched()) - return freed; + return 0; } while (jh != last_jh); - return freed; + return 0; } /* |