[PATCH 12/24] xfs: add reflink feature flag to geometry

Darrick J. Wong
2015-07-29T22:34:27Z

Report the reflink feature in the XFS geometry so that xfs_info and
friends know the filesystem has this feature.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
fs/xfs/libxfs/xfs_fs.h | 1 +
fs/xfs/xfs_fsops.c | 4 +++-
2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h
index 9fbdb86..1d1d93d 100644
--- a/fs/xfs/libxfs/xfs_fs.h
+++ b/fs/xfs/libxfs/xfs_fs.h
@@ -241,6 +241,7 @@ typedef struct xfs_fsop_resblks {
#define XFS_FSOP_GEOM_FLAGS_FINOBT 0x20000 /* free inode btree */
#define XFS_FSOP_GEOM_FLAGS_SPINODES 0x40000 /* sparse inode chunks */
#define XFS_FSOP_GEOM_FLAGS_RMAPBT 0x80000 /* Reverse mapping btree */
+#define XFS_FSOP_GEOM_FLAGS_REFLINK 0x100000 /* reflink */

/*
* Minimum and maximum sizes need for growth checks.
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index 4d39a30..23a8851 100644
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -106,7 +106,9 @@ xfs_fs_geometry(
(xfs_sb_version_hassparseinodes(&mp->m_sb) ?
XFS_FSOP_GEOM_FLAGS_SPINODES : 0) |
(xfs_sb_version_hasrmapbt(&mp->m_sb) ?
- XFS_FSOP_GEOM_FLAGS_RMAPBT : 0);
+ XFS_FSOP_GEOM_FLAGS_RMAPBT : 0) |
+ (xfs_sb_version_hasreflink(&mp->m_sb) ?
+ XFS_FSOP_GEOM_FLAGS_REFLINK : 0);
geo->logsectsize = xfs_sb_version_hassector(&mp->m_sb) ?
mp->m_sb.sb_logsectsize : BBSIZE;
geo->rtsectsize = mp->m_sb.sb_blocksize;