Commit bdb2ed2d authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Darrick J. Wong
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xfs: ignore extent size hints for always COW inodes 



There is no point in applying extent size hints for always COW inodes,
as we would just have to COW any extra allocation beyond the data
actually written.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
parent e5e63404

fs/xfs/xfs_inode.c

+6 −0
Original line number Diff line number Diff line
@@ -55,6 +55,12 @@ xfs_extlen_t 
xfs_get_extsz_hint(

	struct xfs_inode	*ip)

{

	/*

	 * No point in aligning allocations if we need to COW to actually

	 * write to them.

	 */

	if (xfs_is_always_cow_inode(ip))

		return 0;

	if ((ip->i_d.di_flags & XFS_DIFLAG_EXTSIZE) && ip->i_d.di_extsize)

		return ip->i_d.di_extsize;

	if (XFS_IS_REALTIME_INODE(ip))