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| author | Joseph Qi <joseph.qi@huawei.com> | 2014-06-04 16:06:09 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-04 16:53:54 -0700 |
| commit | 55b465b66809368b459674b9d205010730953c2e (patch) | |
| tree | 0131f2364c0bde608a54317a323dea5769479d42 /fs | |
| parent | b3821c3f866a1c02d1537ab67abe9a824d1353ae (diff) | |
| download | linux-55b465b66809368b459674b9d205010730953c2e.tar.gz linux-55b465b66809368b459674b9d205010730953c2e.tar.bz2 linux-55b465b66809368b459674b9d205010730953c2e.zip | |
ocfs2: limit printk when journal is aborted
Once JBD2_ABORT is set, ocfs2_commit_cache will fail in
ocfs2_commit_thread. Then it will get into a loop with mass logs. This
will meaninglessly consume a larger number of resource and may lead to
the system hanging. So limit printk in this case.
[akpm@linux-foundation.org: document the msleep]
Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ocfs2/journal.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c index 03ea9314fecd..4b0c68849b36 100644 --- a/fs/ocfs2/journal.c +++ b/fs/ocfs2/journal.c @@ -30,6 +30,7 @@ #include <linux/kthread.h> #include <linux/time.h> #include <linux/random.h> +#include <linux/delay.h> #include <cluster/masklog.h> @@ -2185,8 +2186,20 @@ static int ocfs2_commit_thread(void *arg) || kthread_should_stop()); status = ocfs2_commit_cache(osb); - if (status < 0) - mlog_errno(status); + if (status < 0) { + static unsigned long abort_warn_time; + + /* Warn about this once per minute */ + if (printk_timed_ratelimit(&abort_warn_time, 60*HZ)) + mlog(ML_ERROR, "status = %d, journal is " + "already aborted.\n", status); + /* + * After ocfs2_commit_cache() fails, j_num_trans has a + * non-zero value. Sleep here to avoid a busy-wait + * loop. + */ + msleep_interruptible(1000); + } if (kthread_should_stop() && atomic_read(&journal->j_num_trans)){ mlog(ML_KTHREAD, |