From 98cc2db5b8b2c9f38aebf54a7b03657406b6de26 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Mon, 3 Oct 2016 09:11:43 -0700 Subject: xfs: unshare a range of blocks via fallocate Unshare all shared extents if the user calls fallocate with the new unshare mode flag set, so that we can guarantee that a subsequent write will not ENOSPC. Signed-off-by: Darrick J. Wong [hch: pass inode instead of file to xfs_reflink_dirty_range, use iomap infrastructure for copy up] Signed-off-by: Christoph Hellwig --- fs/xfs/xfs_reflink.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'fs/xfs/xfs_reflink.h') diff --git a/fs/xfs/xfs_reflink.h b/fs/xfs/xfs_reflink.h index df82b2049187..bade5a61f3b0 100644 --- a/fs/xfs/xfs_reflink.h +++ b/fs/xfs/xfs_reflink.h @@ -48,5 +48,9 @@ extern int xfs_reflink_recover_cow(struct xfs_mount *mp); extern int xfs_reflink_remap_range(struct xfs_inode *src, xfs_off_t srcoff, struct xfs_inode *dest, xfs_off_t destoff, xfs_off_t len, unsigned int flags); +extern int xfs_reflink_clear_inode_flag(struct xfs_inode *ip, + struct xfs_trans **tpp); +extern int xfs_reflink_unshare(struct xfs_inode *ip, xfs_off_t offset, + xfs_off_t len); #endif /* __XFS_REFLINK_H */ -- cgit v1.2.3-58-ga151