Commit 5f98ec1c authored by Allison Henderson's avatar Allison Henderson Committed by Darrick J. Wong
Browse files

xfs: add a incompat feature bit for parent pointers 



Create an incompat feature bit and a fs geometry flag so that we can
enable the feature in the ondisk superblock and advertise its existence
to userspace.

Signed-off-by: default avatarMark Tinguely <mark.tinguely@oracle.com>
Signed-off-by: default avatarDave Chinner <dchinner@redhat.com>
Signed-off-by: default avatarAllison Henderson <allison.henderson@oracle.com>
Reviewed-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: default avatarDarrick J. Wong <djwong@kernel.org>
Signed-off-by: default avatarDarrick J. Wong <djwong@kernel.org>
parent 7dafb449

fs/xfs/libxfs/xfs_format.h

+1 −0
Original line number Diff line number Diff line
@@ -374,6 +374,7 @@ xfs_sb_has_ro_compat_feature( 
#define XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR (1 << 4) /* needs xfs_repair */

#define XFS_SB_FEAT_INCOMPAT_NREXT64	(1 << 5)  /* large extent counters */

#define XFS_SB_FEAT_INCOMPAT_EXCHRANGE	(1 << 6)  /* exchangerange supported */

#define XFS_SB_FEAT_INCOMPAT_PARENT	(1 << 7)  /* parent pointers */

#define XFS_SB_FEAT_INCOMPAT_ALL \

		(XFS_SB_FEAT_INCOMPAT_FTYPE | \

		 XFS_SB_FEAT_INCOMPAT_SPINODES | \

fs/xfs/libxfs/xfs_fs.h

+1 −0
Original line number Diff line number Diff line
@@ -240,6 +240,7 @@ typedef struct xfs_fsop_resblks { 
#define XFS_FSOP_GEOM_FLAGS_INOBTCNT	(1 << 22) /* inobt btree counter */

#define XFS_FSOP_GEOM_FLAGS_NREXT64	(1 << 23) /* large extent counters */

#define XFS_FSOP_GEOM_FLAGS_EXCHANGE_RANGE (1 << 24) /* exchange range */

#define XFS_FSOP_GEOM_FLAGS_PARENT	(1 << 25) /* linux parent pointers */



/*

 * Minimum and maximum sizes need for growth checks.

fs/xfs/libxfs/xfs_sb.c

+4 −0
Original line number Diff line number Diff line
@@ -178,6 +178,8 @@ xfs_sb_version_to_features( 
		features |= XFS_FEAT_NREXT64;

	if (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_EXCHRANGE)

		features |= XFS_FEAT_EXCHANGE_RANGE;

	if (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_PARENT)

		features |= XFS_FEAT_PARENT;



	return features;

}
@@ -1254,6 +1256,8 @@ xfs_fs_geometry( 
		geo->flags |= XFS_FSOP_GEOM_FLAGS_BIGTIME;

	if (xfs_has_inobtcounts(mp))

		geo->flags |= XFS_FSOP_GEOM_FLAGS_INOBTCNT;

	if (xfs_has_parent(mp))

		geo->flags |= XFS_FSOP_GEOM_FLAGS_PARENT;

	if (xfs_has_sector(mp)) {

		geo->flags |= XFS_FSOP_GEOM_FLAGS_SECTOR;

		geo->logsectsize = sbp->sb_logsectsize;

fs/xfs/xfs_super.c

+4 −0
Original line number Diff line number Diff line
@@ -1746,6 +1746,10 @@ xfs_fs_fill_super( 
		xfs_warn(mp,

	"EXPERIMENTAL exchange-range feature enabled. Use at your own risk!");



	if (xfs_has_parent(mp))

		xfs_warn(mp,

	"EXPERIMENTAL parent pointer feature enabled. Use at your own risk!");



	error = xfs_mountfs(mp);

	if (error)

		goto out_filestream_unmount;