Web/* Propagate di_flags from a parent inode to a child inode. */ 684: static void: 685: xfs_inode_inherit_flags(686: struct xfs_inode *ip, 687: const struct xfs_inode *pip) 688 {689: ... /* Clear the reflink flag and the cowblocks tag if possible. */ 1288: static void: 1289: xfs_itruncate_clear_reflink_flags(1290: struct xfs_inode *ip) 1291 {1292 ... Webstruct xfs_inode *ip) { xfs_extlen_t a, b; a = 0; if (ip->i_diflags2 & XFS_DIFLAG2_COWEXTSIZE) a = ip->i_cowextsize; b = xfs_get_extsz_hint (ip); a = max (a, b); if (a == 0) return XFS_DEFAULT_COWEXTSZ_HINT; return a; } /* * These two are wrapper routines around the xfs_ilock () routine used to * centralize some grungy code.
XFS, Reflinks and Deduplication – The ongoing struggle
WebThe reflink feature, available since kernel version 4.9 and enabled by default since mkfs.xfs version 5.1.0, allows creating fast reflink'ed copies of files as well as deduplication after the fact, in the same way as btrfs : Reflink copies Reflink copies initially use no additional space: $ cp --reflink bigfile1 bigfile2 WebJun 17, 2016 · Check that xfs_repair can clear the reflink inode flag. v2: This is a reflink test; use _require_scratch_reflink Signed-off-by: Darrick J. Wong --- tests/xfs/872 93 +++++ tests/xfs/872.out 20 +++++ … homemade salad dressing with mayo and vinegar
[RFC PATCH] xfs: check shared state of when CoW, update reflink flag ...
WebRe: [RFC PATCH] xfs: check shared state of when CoW, update reflink flag when io ends From: Darrick J. Wong Date: Tue Mar 21 2024 - 11:14:16 EST Next message: David … WebFeb 16, 2016 · distinguish symbolic links and hard links from ref links identify partial clones (files that share some but not all data) Solutions: Use filefrag Use stat to identify the device as clones must reside on the same filesystem. Quote: Hard links share the same inode number as their destination, whereas clones have their own inodes. WebCurrently these are the only ones that should exist at this point anyway, but with O_ATOMIC writes we might have legit extents around in the COW fork even when clearing the reflink flag. Signed-off-by: Christoph Hellwig --- fs/xfs/xfs_reflink.c 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) hindu mr var crossword