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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2016-10-03 16:11:36 (GMT) |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2016-10-05 23:26:04 (GMT) |
| commit | db1327b16c2b24e28d1e5899bced89db9ae6538e (patch) | |
| tree | 26387f590ce880b409245a80c40dabe47a7dc6e5 /fs/xfs/xfs_iomap.h | |
| parent | 43caeb187deb92b3cc343fce9c2310512f6ac9cd (diff) | |
| download | linux-db1327b16c2b24e28d1e5899bced89db9ae6538e.tar.xz | |
xfs: report shared extent mappings to userspace correctly
Report shared extents through the iomap interface so that FIEMAP flags
shared blocks accurately. Have xfs_vm_bmap return zero for reflinked
files because the bmap-based swap code requires static block mappings,
which is incompatible with copy on write.
NOTE: Existing userspace bmap users such as lilo will have the same
problem with reflink files.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs/xfs/xfs_iomap.h')
0 files changed, 0 insertions, 0 deletions