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xfs: refactor locking and unlocking two inodes against userspace IO

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Refactor the two functions that we use to lock and unlock two inodes to
block userspace from initiating IO against a file, whether via system
calls or mmap activity.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
This commit is contained in:
Darrick J. Wong
2020-06-29 14:47:20 -07:00
parent 451d34ee07
commit 10b4bd6c9c
3 changed files with 34 additions and 23 deletions
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3
fs/xfs/xfs_reflink.h
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@@ -56,7 +56,6 @@ extern int xfs_reflink_remap_blocks(struct xfs_inode *src, loff_t pos_in,
loff_t *remapped);
extern int xfs_reflink_update_dest(struct xfs_inode *dest, xfs_off_t newlen,
xfs_extlen_t cowextsize, unsigned int remap_flags);
extern void xfs_reflink_remap_unlock(struct file *file_in,
struct file *file_out);
extern void xfs_reflink_remap_unlock(struct xfs_inode *ip1, struct xfs_inode *ip2);
#endif /* __XFS_REFLINK_H */