From: Darrick J. Wong <djwong@xxxxxxxxxx>
Introduce a variant on XFS_SCRUB_METADATA that allows for vectored mode.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
libxfs/xfs_fs.h | 37 +++++++++++++++++++++++++++++++++++++
1 file changed, 37 insertions(+)
diff --git a/libxfs/xfs_fs.h b/libxfs/xfs_fs.h
index 453b0861225..067dd0b1315 100644
--- a/libxfs/xfs_fs.h
+++ b/libxfs/xfs_fs.h
@@ -751,6 +751,15 @@ struct xfs_scrub_metadata {
/* Number of scrub subcommands. */
#define XFS_SCRUB_TYPE_NR 32
+/*
+ * This special type code only applies to the vectored scrub implementation.
+ *
+ * If any of the previous scrub vectors recorded runtime errors or have
+ * sv_flags bits set that match the OFLAG bits in the barrier vector's
+ * sv_flags, set the barrier's sv_ret to -ECANCELED and return to userspace.
+ */
+#define XFS_SCRUB_TYPE_BARRIER (-1U)
+
/* i: Repair this metadata. */
#define XFS_SCRUB_IFLAG_REPAIR (1u << 0)
@@ -795,6 +804,33 @@ struct xfs_scrub_metadata {
XFS_SCRUB_OFLAG_NO_REPAIR_NEEDED)
#define XFS_SCRUB_FLAGS_ALL (XFS_SCRUB_FLAGS_IN | XFS_SCRUB_FLAGS_OUT)
+struct xfs_scrub_vec {
+ __u32 sv_type; /* XFS_SCRUB_TYPE_* */
+ __u32 sv_flags; /* XFS_SCRUB_FLAGS_* */
+ __s32 sv_ret; /* 0 or a negative error code */
+ __u32 sv_reserved; /* must be zero */
+};
+
+/* Vectored metadata scrub control structure. */
+struct xfs_scrub_vec_head {
+ __u64 svh_ino; /* inode number. */
+ __u32 svh_gen; /* inode generation. */
+ __u32 svh_agno; /* ag number. */
+ __u32 svh_flags; /* XFS_SCRUB_VEC_FLAGS_* */
+ __u16 svh_rest_us; /* wait this much time between vector items */
+ __u16 svh_nr; /* number of svh_vecs */
+
+ struct xfs_scrub_vec svh_vecs[0];
+};
+
+#define XFS_SCRUB_VEC_FLAGS_ALL (0)
+
+static inline size_t sizeof_xfs_scrub_vec(unsigned int nr)
+{
+ return sizeof(struct xfs_scrub_vec_head) +
+ nr * sizeof(struct xfs_scrub_vec);
+}
+
/*
* ioctl limits
*/
@@ -839,6 +875,7 @@ struct xfs_scrub_metadata {
#define XFS_IOC_FREE_EOFBLOCKS _IOR ('X', 58, struct xfs_fs_eofblocks)
/* XFS_IOC_GETFSMAP ------ hoisted 59 */
#define XFS_IOC_SCRUB_METADATA _IOWR('X', 60, struct xfs_scrub_metadata)
+#define XFS_IOC_SCRUBV_METADATA _IOWR('X', 60, struct xfs_scrub_vec_head)
#define XFS_IOC_AG_GEOMETRY _IOWR('X', 61, struct xfs_ag_geometry)
#define XFS_IOC_RTGROUP_GEOMETRY _IOWR('X', 62, struct xfs_rtgroup_geometry)
