man: document the new v5 fs geometry ioctl structures

Amend the fs geometry ioctl documentation to cover the new v5 structure.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>

diff --git a/man/man2/ioctl_xfs_fsop_geometry.2 b/man/man2/ioctl_xfs_fsop_geometry.2
index 68e3387dfc7d62bab04e00f3ee15df35688d3bc1..365bda8b2554469371507164ac1253eb14078539 100644 (file)
--- a/man/man2/ioctl_xfs_fsop_geometry.2
+++ b/man/man2/ioctl_xfs_fsop_geometry.2
@@ -12,6 +12,8 @@ ioctl_xfs_fsop_geometry \- report XFS filesystem layout and features
 .PP
 .BI "int ioctl(int " fd ", XFS_IOC_FSOP_GEOMETRY, struct xfs_fsop_geom*" arg );
 .br
+.BI "int ioctl(int " fd ", XFS_IOC_FSOP_GEOMETRY_V4, struct xfs_fsop_geom_v4 *" arg );
+.br
 .BI "int ioctl(int " fd ", XFS_IOC_FSOP_GEOMETRY_V1, struct xfs_fsop_geom_v1 *" arg );
 .SH DESCRIPTION
 Report the details of an XFS filesystem layout, features, and other descriptive items.
@@ -43,6 +45,9 @@ struct xfs_fsop_geom {
        /* struct xfs_fsop_geom_v1 stops here. */
 
        __u32         logsunit;
+       /* struct xfs_fsop_geom_v4 stops here. */
+
+       __u64         reserved[18];
 };
 .fi
 .in
@@ -124,6 +129,9 @@ underlying log device, in filesystem blocks.
 This field is meaningful only if the flag
 .B  XFS_FSOP_GEOM_FLAGS_LOGV2
 is set.
+.PP
+.I reserved
+is set to zero.
 .SH FILESYSTEM FEATURE FLAGS
 Filesystem features are reported to userspace as a combination the following
 flags: