diff options
| author | Jan Kara <jack@suse.cz> | 2014-02-21 11:19:04 +0100 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2014-02-22 02:02:28 +0100 |
| commit | 0dc83bd30b0bf5410c0933cfbbf8853248eff0a9 (patch) | |
| tree | 66b8f3ebdd4a6c0de6f82e449c7e037170e26b81 /include/trace | |
| parent | 1362f4ea20fa63688ba6026e586d9746ff13a846 (diff) | |
Revert "writeback: do not sync data dirtied after sync start"
This reverts commit c4a391b53a72d2df4ee97f96f78c1d5971b47489. Dave
Chinner <david@fromorbit.com> has reported the commit may cause some
inodes to be left out from sync(2). This is because we can call
redirty_tail() for some inode (which sets i_dirtied_when to current time)
after sync(2) has started or similarly requeue_inode() can set
i_dirtied_when to current time if writeback had to skip some pages. The
real problem is in the functions clobbering i_dirtied_when but fixing
that isn't trivial so revert is a safer choice for now.
CC: stable@vger.kernel.org # >= 3.13
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/writeback.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/trace/events/writeback.h b/include/trace/events/writeback.h index c7bbbe794e65..464ea82e10db 100644 --- a/include/trace/events/writeback.h +++ b/include/trace/events/writeback.h @@ -287,11 +287,11 @@ TRACE_EVENT(writeback_queue_io, __field(int, reason) ), TP_fast_assign( - unsigned long older_than_this = work->older_than_this; + unsigned long *older_than_this = work->older_than_this; strncpy(__entry->name, dev_name(wb->bdi->dev), 32); - __entry->older = older_than_this; + __entry->older = older_than_this ? *older_than_this : 0; __entry->age = older_than_this ? - (jiffies - older_than_this) * 1000 / HZ : -1; + (jiffies - *older_than_this) * 1000 / HZ : -1; __entry->moved = moved; __entry->reason = work->reason; ), |