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Commit 738f57c1 authored by Darrick J. Wong's avatar Darrick J. Wong Committed by Dave Chinner
Browse files

xfs: disallow mounting of realtime + rmap filesystems 



Since the kernel doesn't currently support the realtime rmapbt,
don't allow such filesystems to be mounted.  Support will appear
in a future release.

Signed-off-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: default avatarCarlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarDave Chinner <david@fromorbit.com>
parent ed150e1a

fs/xfs/xfs_super.c

+8 −1
Original line number Diff line number Diff line
@@ -1574,9 +1574,16 @@ xfs_fs_fill_super( 
		}

	}



	if (xfs_sb_version_hasrmapbt(&mp->m_sb))

	if (xfs_sb_version_hasrmapbt(&mp->m_sb)) {

		if (mp->m_sb.sb_rblocks) {

			xfs_alert(mp,

	"EXPERIMENTAL reverse mapping btree not compatible with realtime device!");

			error = -EINVAL;

			goto out_filestream_unmount;

		}

		xfs_alert(mp,

	"EXPERIMENTAL reverse mapping btree feature enabled. Use at your own risk!");

	}



	error = xfs_mountfs(mp);

	if (error)