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authorDarrick J. Wong <darrick.wong@oracle.com>2016-10-03 09:11:50 -0700
committerDarrick J. Wong <darrick.wong@oracle.com>2016-10-05 16:26:31 -0700
commit4f435ebe7d0422af61cdcddbbcc659888645a1e1 (patch)
tree49f6833f8b5b9e71c2df1b540fcbe933dfcd7087 /fs/xfs/xfs_ioctl.c
parentc8e156ac336d82f67d7adc014404a2251e9dad09 (diff)
downloadlinux-4f435ebe7d0422af61cdcddbbcc659888645a1e1.tar.bz2
xfs: don't mix reflink and DAX mode for now
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 <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/xfs/xfs_ioctl.c')
-rw-r--r--fs/xfs/xfs_ioctl.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index c65d9eacf54d..8b9f31c54c1e 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -1038,6 +1038,10 @@ xfs_ioctl_setattr_xflags(
if ((fa->fsx_xflags & FS_XFLAG_REALTIME) && xfs_is_reflink_inode(ip))
return -EINVAL;
+ /* Don't allow us to set DAX mode for a reflinked file for now. */
+ if ((fa->fsx_xflags & FS_XFLAG_DAX) && xfs_is_reflink_inode(ip))
+ return -EINVAL;
+
/*
* Can't modify an immutable/append-only file unless
* we have appropriate permission.