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| author | Dave Chinner <dchinner@redhat.com> | 2013-11-01 15:27:19 +1100 |
|---|---|---|
| committer | Ben Myers <bpm@sgi.com> | 2013-11-06 12:42:52 -0600 |
| commit | d123031a5673cd38a85ce66cc07243dfe5f424c9 (patch) | |
| tree | a1620c83c6460575f31c71470c4d4200334d4315 /fs/xfs/xfs_alloc.c | |
| parent | 750b9c90668b173a92b20e747b9736b8537eda5a (diff) | |
| download | kernel-common-d123031a5673cd38a85ce66cc07243dfe5f424c9.tar.gz kernel-common-d123031a5673cd38a85ce66cc07243dfe5f424c9.tar.bz2 kernel-common-d123031a5673cd38a85ce66cc07243dfe5f424c9.zip | |
xfs: add tracepoints to AGF/AGI read operations
To help track down AGI/AGF lock ordering issues, I added these
tracepoints to tell us when an AGI or AGF is read and locked. With
these we can now determine if the lock ordering goes wrong from
tracing captures.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_alloc.c')
| -rw-r--r-- | fs/xfs/xfs_alloc.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c index bcf16528bac5..9eab2dfdcbb5 100644 --- a/fs/xfs/xfs_alloc.c +++ b/fs/xfs/xfs_alloc.c @@ -2294,6 +2294,8 @@ xfs_read_agf( { int error; + trace_xfs_read_agf(mp, agno); + ASSERT(agno != NULLAGNUMBER); error = xfs_trans_read_buf( mp, tp, mp->m_ddev_targp, @@ -2324,8 +2326,9 @@ xfs_alloc_read_agf( struct xfs_perag *pag; /* per allocation group data */ int error; - ASSERT(agno != NULLAGNUMBER); + trace_xfs_alloc_read_agf(mp, agno); + ASSERT(agno != NULLAGNUMBER); error = xfs_read_agf(mp, tp, agno, (flags & XFS_ALLOC_FLAG_TRYLOCK) ? XBF_TRYLOCK : 0, bpp); |