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authorDarrick J. Wong <darrick.wong@oracle.com>2016-08-03 05:18:07 +0300
committerDave Chinner <david@fromorbit.com>2016-08-03 05:18:07 +0300
commit2b0eeb5e74ced62a94b01c65ddec9be7e5edcea1 (patch)
tree34030028465536b67d6df02283dc8b0af5524ffb /fs/xfs
parenta650e8f98e5d9df8a5866d73aa9a796601f1abfc (diff)
downloadlinux-2b0eeb5e74ced62a94b01c65ddec9be7e5edcea1.tar.xz
xfs: disable XFS_IOC_SWAPEXT when rmap btree is enabled
Swapping extents between two inodes requires the owner to be updated in the rmap tree for all the extents that are swapped. This code does not yet exist, so switch off the XFS_IOC_SWAPEXT ioctl until support has been implemented. This will need to be done before the rmap btree code can have the experimental tag removed. This functionality will be provided in a (much) later patch, using some of the reflink deferred block remapping functionality to accomlish extent swapping with rmap updates. Signed-off-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/xfs_bmap_util.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index a819d7baa346..4ece4f2ffc72 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -1535,6 +1535,10 @@ xfs_swap_extents(
__uint64_t tmp;
int lock_flags;
+ /* XXX: we can't do this with rmap, will fix later */
+ if (xfs_sb_version_hasrmapbt(&mp->m_sb))
+ return -EOPNOTSUPP;
+
tempifp = kmem_alloc(sizeof(xfs_ifork_t), KM_MAYFAIL);
if (!tempifp) {
error = -ENOMEM;