From 378ed4e785ae4ed5a94c923c25bacd340247c1ca Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Tue, 25 Oct 2016 12:46:51 +1100 Subject: [PATCH] xfs: don't mix reflink and DAX mode for now Source kernel commit: 4f435ebe7d0422af61cdcddbbcc659888645a1e1 Since we don't have a strategy for handling both DAX and reflink, for now we'll just prohibit both being set at the same time. Signed-off-by: Darrick J. Wong Reviewed-by: Christoph Hellwig --- libxfs/xfs_inode_buf.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libxfs/xfs_inode_buf.c b/libxfs/xfs_inode_buf.c index ed34eceba..4796a592b 100644 --- a/libxfs/xfs_inode_buf.c +++ b/libxfs/xfs_inode_buf.c @@ -416,6 +416,10 @@ xfs_dinode_verify( if ((flags2 & XFS_DIFLAG2_REFLINK) && (flags & XFS_DIFLAG_REALTIME)) return false; + /* don't let reflink and dax mix */ + if ((flags2 & XFS_DIFLAG2_REFLINK) && (flags2 & XFS_DIFLAG2_DAX)) + return false; + return true; } -- 2.47.2