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| author |   Chandan Babu R <chandanrlinux@gmail.com> | 2021-01-22 16:48:14 -0800 |
|---|---|---|
| committer |   Darrick J. Wong <djwong@kernel.org> | 2021-01-22 16:54:48 -0800 |
| commit | 5f1d5bbfb2e674052a9fe542f53678978af20770 (patch) | |
| tree | 3dd04de39ef9bed596a3a78bd4c098692b1476a6 /fs/xfs/libxfs/xfs_inode_fork.c | |
| parent | xfs: Check for extent overflow when writing to unwritten extent (diff) | |
| download | wireguard-linux-5f1d5bbfb2e674052a9fe542f53678978af20770.tar.xz wireguard-linux-5f1d5bbfb2e674052a9fe542f53678978af20770.zip | |
xfs: Check for extent overflow when moving extent from cow to data fork
Moving an extent to data fork can cause a sub-interval of an existing
extent to be unmapped. This will increase extent count by 1. Mapping in
the new extent can increase the extent count by 1 again i.e.
| Old extent | New extent | Old extent |
Hence number of extents increases by 2.
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
Signed-off-by: Chandan Babu R <chandanrlinux@gmail.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs/xfs/libxfs/xfs_inode_fork.c')
0 files changed, 0 insertions, 0 deletions