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Commit 1c0607ac authored by Darrick J. Wong's avatar Darrick J. Wong Committed by Dave Chinner
Browse files

xfs: enable the rmap btree functionality 



Originally-From: Dave Chinner <dchinner@redhat.com>

Add the feature flag to the supported matrix so that the kernel can
mount and use rmap btree enabled filesystems

Signed-off-by: default avatarDave Chinner <dchinner@redhat.com>
[darrick.wong@oracle.com: move the experimental tag]
Signed-off-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: default avatarBrian Foster <bfoster@redhat.com>
Signed-off-by: default avatarDave Chinner <david@fromorbit.com>
parent 04f13060

fs/xfs/libxfs/xfs_format.h

+2 −1
Original line number Diff line number Diff line
@@ -457,7 +457,8 @@ xfs_sb_has_compat_feature( 
#define XFS_SB_FEAT_RO_COMPAT_FINOBT   (1 << 0)		/* free inode btree */

#define XFS_SB_FEAT_RO_COMPAT_RMAPBT   (1 << 1)		/* reverse map btree */

#define XFS_SB_FEAT_RO_COMPAT_ALL \

		(XFS_SB_FEAT_RO_COMPAT_FINOBT)

		(XFS_SB_FEAT_RO_COMPAT_FINOBT | \

		 XFS_SB_FEAT_RO_COMPAT_RMAPBT)

#define XFS_SB_FEAT_RO_COMPAT_UNKNOWN	~XFS_SB_FEAT_RO_COMPAT_ALL

static inline bool

xfs_sb_has_ro_compat_feature(

fs/xfs/xfs_super.c

+4 −0
Original line number Diff line number Diff line
@@ -1574,6 +1574,10 @@ xfs_fs_fill_super( 
		}

	}



	if (xfs_sb_version_hasrmapbt(&mp->m_sb))

		xfs_alert(mp,

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



	error = xfs_mountfs(mp);

	if (error)

		goto out_filestream_unmount;