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| author | Chandan Babu R <chandanrlinux@gmail.com> | 2021-01-22 16:48:11 -0800 |
|---|---|---|
| committer | Darrick J. Wong <djwong@kernel.org> | 2021-01-22 16:54:47 -0800 |
| commit | 85ef08b5a667615bc7be5058259753dc42a7adcd (patch) | |
| tree | 3eb09dee8e0beb0bd23eed4541b324f0dfd035e1 /fs/xfs/libxfs | |
| parent | 727e1acd297cae15449607d6e2ee39c71216cf1a (diff) | |
| download | linux-stable-85ef08b5a667615bc7be5058259753dc42a7adcd.tar.gz linux-stable-85ef08b5a667615bc7be5058259753dc42a7adcd.tar.bz2 linux-stable-85ef08b5a667615bc7be5058259753dc42a7adcd.zip | |
xfs: Check for extent overflow when punching a hole
The extent mapping the file offset at which a hole has to be
inserted will be split into two extents causing extent count to
increase by 1.
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')
| -rw-r--r-- | fs/xfs/libxfs/xfs_inode_fork.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_inode_fork.h b/fs/xfs/libxfs/xfs_inode_fork.h index 7fc2b129a2e7..bcac769a7df6 100644 --- a/fs/xfs/libxfs/xfs_inode_fork.h +++ b/fs/xfs/libxfs/xfs_inode_fork.h @@ -41,6 +41,13 @@ struct xfs_ifork { #define XFS_IEXT_ADD_NOSPLIT_CNT (1) /* + * Punching out an extent from the middle of an existing extent can cause the + * extent count to increase by 1. + * i.e. | Old extent | Hole | Old extent | + */ +#define XFS_IEXT_PUNCH_HOLE_CNT (1) + +/* * Fork handling. */ |