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| author | Dave Chinner <dchinner@redhat.com> | 2015-02-23 21:44:19 +1100 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2015-02-23 21:44:19 +1100 |
| commit | de0e8c20ba3a65b0f15040aabbefdc1999876e6b (patch) | |
| tree | 1b727063b3d8c6a41e2ccb6a16f5f8134c566f09 /fs/xfs/xfs_trace.h | |
| parent | 653c60b633a9019a54a80d64b5ed33ecb214823c (diff) | |
| download | linux-de0e8c20ba3a65b0f15040aabbefdc1999876e6b.tar.bz2 | |
xfs: use i_mmaplock on read faults
Take the i_mmaplock over read page faults. These come through the
->fault callout, so we need to wrap the generic implementation
with the i_mmaplock. While there, add tracepoints for the read
fault as it passes through XFS.
This gives us a lock order of mmap_sem -> i_mmaplock -> page_lock
-> i_lock.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_trace.h')
| -rw-r--r-- | fs/xfs/xfs_trace.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h index 51372e34d988..c496153b976b 100644 --- a/fs/xfs/xfs_trace.h +++ b/fs/xfs/xfs_trace.h @@ -685,6 +685,8 @@ DEFINE_INODE_EVENT(xfs_inode_set_eofblocks_tag); DEFINE_INODE_EVENT(xfs_inode_clear_eofblocks_tag); DEFINE_INODE_EVENT(xfs_inode_free_eofblocks_invalid); +DEFINE_INODE_EVENT(xfs_filemap_fault); + DECLARE_EVENT_CLASS(xfs_iref_class, TP_PROTO(struct xfs_inode *ip, unsigned long caller_ip), TP_ARGS(ip, caller_ip), |