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| author | Dave Chinner <dchinner@redhat.com> | 2015-02-23 21:44:54 +1100 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2015-02-23 21:44:54 +1100 |
| commit | 075a924d45cc69c75a35f20b4912b85aa98b180a (patch) | |
| tree | 0c4112f87ca3d6b7669aa0d4b3913cd97f84a8ce /fs/xfs/xfs_trace.h | |
| parent | de0e8c20ba3a65b0f15040aabbefdc1999876e6b (diff) | |
| download | linux-stable-075a924d45cc69c75a35f20b4912b85aa98b180a.tar.gz linux-stable-075a924d45cc69c75a35f20b4912b85aa98b180a.tar.bz2 linux-stable-075a924d45cc69c75a35f20b4912b85aa98b180a.zip | |
xfs: use i_mmaplock on write faults
Take the i_mmaplock over write page faults. These come through the
->page_mkwrite callout, so we need to wrap that calls with the
i_mmaplock.
This gives us a lock order of mmap_sem -> i_mmaplock -> page_lock
-> i_lock.
Also, move the page_mkwrite wrapper to the same region of xfs_file.c
as the read fault wrappers and add a tracepoint.
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 | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h index c496153b976b..b1e059b398c0 100644 --- a/fs/xfs/xfs_trace.h +++ b/fs/xfs/xfs_trace.h @@ -686,6 +686,7 @@ DEFINE_INODE_EVENT(xfs_inode_clear_eofblocks_tag); DEFINE_INODE_EVENT(xfs_inode_free_eofblocks_invalid); DEFINE_INODE_EVENT(xfs_filemap_fault); +DEFINE_INODE_EVENT(xfs_filemap_page_mkwrite); DECLARE_EVENT_CLASS(xfs_iref_class, TP_PROTO(struct xfs_inode *ip, unsigned long caller_ip), |