From: Darrick J. Wong <djwong@xxxxxxxxxx>
Create an ioctl that installs a file descriptor backed by an anon_inode
file that will convey filesystem health events to userspace.
Signed-off-by: "Darrick J. Wong" <djwong@xxxxxxxxxx>
---
libxfs/xfs_fs.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/libxfs/xfs_fs.h b/libxfs/xfs_fs.h
index f4128dbdf3b9a2..d1a81b02a1a3f3 100644
--- a/libxfs/xfs_fs.h
+++ b/libxfs/xfs_fs.h
@@ -1100,6 +1100,13 @@ struct xfs_map_freesp {
__u64 pad; /* must be zero */
};
+struct xfs_health_monitor {
+ __u64 flags; /* flags */
+ __u8 format; /* output format */
+ __u8 pad1[7]; /* zeroes */
+ __u64 pad2[2]; /* zeroes */
+};
+
/*
* ioctl commands that are used by Linux filesystems
*/
@@ -1141,6 +1148,7 @@ struct xfs_map_freesp {
#define XFS_IOC_RTGROUP_GEOMETRY _IOWR('X', 65, struct xfs_rtgroup_geometry)
#define XFS_IOC_GETFSREFCOUNTS _IOWR('X', 66, struct xfs_getfsrefs_head)
#define XFS_IOC_MAP_FREESP _IOW ('X', 67, struct xfs_map_freesp)
+#define XFS_IOC_HEALTH_MONITOR _IOW ('X', 68, struct xfs_health_monitor)
/*
* ioctl commands that replace IRIX syssgi()'s
