diff options
| author | Dave Chinner <dchinner@redhat.com> | 2015-02-23 21:44:54 +1100 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2016-06-15 21:29:33 +0100 |
| commit | fc5321c3570a2854c74180922ef5549517201699 (patch) | |
| tree | e4c9f4b664310697c8017e5d3f7e1f9a798cbbc4 /include/linux | |
| parent | b248005489f8007dcd65a8159a03ed471f8eccd7 (diff) | |
xfs: use i_mmaplock on write faults
commit 075a924d45cc69c75a35f20b4912b85aa98b180a upstream.
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>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Jan Kara <jack@suse.cz>
Cc: xfs@oss.sgi.com
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions