From: Darrick J. Wong <djwong@xxxxxxxxxx>
Export the realtime geometry information so that userspace can query it.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
---
fs/xfs/libxfs/xfs_fs.h | 4 +++-
fs/xfs/libxfs/xfs_sb.c | 5 +++++
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h
index faa38a7d1eb019..5c224d03270ce9 100644
--- a/fs/xfs/libxfs/xfs_fs.h
+++ b/fs/xfs/libxfs/xfs_fs.h
@@ -187,7 +187,9 @@ struct xfs_fsop_geom {
__u32 logsunit; /* log stripe unit, bytes */
uint32_t sick; /* o: unhealthy fs & rt metadata */
uint32_t checked; /* o: checked fs & rt metadata */
- __u64 reserved[17]; /* reserved space */
+ __u32 rgextents; /* rt extents in a realtime group */
+ __u32 rgcount; /* number of realtime groups */
+ __u64 reserved[16]; /* reserved space */
};
#define XFS_FSOP_GEOM_SICK_COUNTERS (1 << 0) /* summary counters */
diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c
index 2b0284d78028fa..f13904a9b200df 100644
--- a/fs/xfs/libxfs/xfs_sb.c
+++ b/fs/xfs/libxfs/xfs_sb.c
@@ -1410,6 +1410,11 @@ xfs_fs_geometry(
return;
geo->version = XFS_FSOP_GEOM_VERSION_V5;
+
+ if (xfs_has_rtgroups(mp)) {
+ geo->rgcount = sbp->sb_rgcount;
+ geo->rgextents = sbp->sb_rgextents;
+ }
}
/* Read a secondary superblock. */
