[PATCH block/for-linus] writeback: fix syncing of I_DIRTY_TIME inodes

[Eryu Guan]

On Sat, Aug 22, 2015 at 10:30:25AM +1000, Dave Chinner wrote:
> On Fri, Aug 21, 2015 at 06:20:53PM +0800, Eryu Guan wrote:
[snip]
> 
> Eryu, can you try again, this time manually specifying the writeback
> tracepoints so you exclude the really noisy ones? You can also drop
> the xfs_file_buffered_write and xfs_file_fsync tracepoints as well,
> as we can see that the incoming side of the code is doing the right
> thing....

I excluded the writeback tracepoints you mentioned

writeback_mark_inode_dirty
writeback_dirty_inode_start
writeback_dirty_inode
writeback_dirty_page
writeback_write_inode

and left all other writeback tracepoints enabled, also dropped
xfs_file_buffered_write and xfs_file_fsync.

This time I can reproduce generic/048 quickly and please download the
trace info from below

http://128.199.137.77/writeback-v2/

Thanks,
Eryu