man: document XFS_FSOP_GEOM_FLAGS_ZONED

Document the new zoned feature flag and the two new fields added
with it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>

diff --git a/man/man2/ioctl_xfs_fsgeometry.2 b/man/man2/ioctl_xfs_fsgeometry.2
index 502054f391e9b598bc65dead3f512183fbe38f2b..037f8e15e415cf880aafac02f7b1c7b11fec175c 100644 (file)
--- a/man/man2/ioctl_xfs_fsgeometry.2
+++ b/man/man2/ioctl_xfs_fsgeometry.2
@@ -50,7 +50,9 @@ struct xfs_fsop_geom {
        __u32         sick;
        __u32         checked;
        __u64         rgextents;
-       __u64         reserved[16];
+       __u64         rtstart;
+       __u64         rtreserved;
+       __u64         reserved[14];
 };
 .fi
 .in
@@ -143,6 +145,20 @@ for more details.
 .I rgextents
 Is the number of RT extents in each rtgroup.
 .PP
+.I rtstart
+Start of the internal RT device in fsblocks.  0 if an external RT device
+is used.
+This field is meaningful only if the flag
+.B  XFS_FSOP_GEOM_FLAGS_ZONED
+is set.
+.PP
+.I rtreserved
+The amount of space in the realtime section that is reserved for internal use
+by garbage collection and reorganization algorithms in fsblocks.
+This field is meaningful only if the flag
+.B  XFS_FSOP_GEOM_FLAGS_ZONED
+is set.
+.PP
 .I reserved
 is set to zero.
 .SH FILESYSTEM FEATURE FLAGS
@@ -221,6 +237,9 @@ Filesystem can exchange file contents atomically via XFS_IOC_EXCHANGE_RANGE.
 .TP
 .B XFS_FSOP_GEOM_FLAGS_METADIR
 Filesystem contains a metadata directory tree.
+.TP
+.B XFS_FSOP_GEOM_FLAGS_ZONED
+Filesystem uses the zoned allocator for the RT device.
 .RE
 .SH XFS METADATA HEALTH REPORTING
 .PP