| commit | 479c641273df632478cda7fe76b833df64e319bc | [log] [tgz] |
|---|---|---|
| author | Darrick J. Wong <darrick.wong@oracle.com> | Tue Jun 21 11:53:28 2016 +1000 |
| committer | Dave Chinner <david@fromorbit.com> | Tue Jun 21 11:53:28 2016 +1000 |
| tree | fcfade01ced0f2aab76e3366aaba93ad3d574acc | |
| parent | 3f94c441e2c3dea029a46a2326b2170acf2c7713 [diff] |
xfs: enable buffer deadlock postmortem diagnosis via ftrace Create a second buf_trylock tracepoint so that we can distinguish between a successful and a failed trylock. With this piece, we can use a script to look at the ftrace output to detect buffer deadlocks. [dchinner: update to if/else as per hch's suggestion] Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Chinner <david@fromorbit.com>