diff mbox series

[04/34] xfs: export realtime group geometry via XFS_FSOP_GEOM

Message ID 173084398253.1871887.1496042139054113574.stgit@frogsfrogsfrogs (mailing list archive)
State New
Headers show
Series [01/34] xfs: define the format of rt groups | expand

Commit Message

Darrick J. Wong Nov. 5, 2024, 10:30 p.m. UTC 
From: Darrick J. Wong <djwong@kernel.org>

Export the realtime geometry information so that userspace can query it.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
 fs/xfs/libxfs/xfs_fs.h |    4 +++-
 fs/xfs/libxfs/xfs_sb.c |    5 +++++
 2 files changed, 8 insertions(+), 1 deletion(-)
diff mbox series

Patch

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 6b0757d60cf3af..b1e12c7e7dbe23 100644
--- a/fs/xfs/libxfs/xfs_sb.c
+++ b/fs/xfs/libxfs/xfs_sb.c
@@ -1413,6 +1413,11 @@  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. */