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| author | Dan Williams <dan.j.williams@intel.com> | 2018-03-12 14:12:29 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2018-05-22 07:19:08 -0700 |
| commit | c63a8eae63d3859c9c7067aa239a4cfd7423a665 (patch) | |
| tree | 0dd8ab3bd054ac8171bc46b8a7e31d3261b1c629 /fs/xfs/libxfs/xfs_dir2_leaf.c | |
| parent | 5fac7408d828719db6d3fdba63e3c3726a6d1ee5 (diff) | |
| download | linux-c63a8eae63d3859c9c7067aa239a4cfd7423a665.tar.bz2 | |
xfs: prepare xfs_break_layouts() to be called with XFS_MMAPLOCK_EXCL
In preparation for adding coordination between extent unmap operations
and busy dax-pages, update xfs_break_layouts() to permit it to be called
with the mmap lock held. This lock scheme will be required for
coordinating the break of 'dax layouts' (non-idle dax (ZONE_DEVICE)
pages mapped into the file's address space). Breaking dax layouts will
be added to xfs_break_layouts() in a future patch, for now this preps
the unmap call sites to take and hold XFS_MMAPLOCK_EXCL over the call to
xfs_break_layouts().
Cc: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Dave Chinner <david@fromorbit.com>
Suggested-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <darrick.wong@oracle.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'fs/xfs/libxfs/xfs_dir2_leaf.c')
0 files changed, 0 insertions, 0 deletions