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-rw-r--r--fs/xfs/libxfs/xfs_fs.h33
-rw-r--r--fs/xfs/scrub/scrub.c149
-rw-r--r--fs/xfs/scrub/trace.h79
-rw-r--r--fs/xfs/scrub/xfs_scrub.h2
-rw-r--r--fs/xfs/xfs_ioctl.c2
5 files changed, 264 insertions, 1 deletions
diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h
index 7ae1912cdbfc..97996cb79aaa 100644
--- a/fs/xfs/libxfs/xfs_fs.h
+++ b/fs/xfs/libxfs/xfs_fs.h
@@ -725,6 +725,15 @@ struct xfs_scrub_metadata {
/* Number of scrub subcommands. */
#define XFS_SCRUB_TYPE_NR 29
+/*
+ * 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 (0xFFFFFFFF)
+
/* i: Repair this metadata. */
#define XFS_SCRUB_IFLAG_REPAIR (1u << 0)
@@ -769,6 +778,29 @@ struct xfs_scrub_metadata {
XFS_SCRUB_OFLAG_NO_REPAIR_NEEDED)
#define XFS_SCRUB_FLAGS_ALL (XFS_SCRUB_FLAGS_IN | XFS_SCRUB_FLAGS_OUT)
+/* Vectored scrub calls to reduce the number of kernel transitions. */
+
+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_vectors */
+ __u64 svh_reserved; /* must be zero */
+ __u64 svh_vectors; /* pointer to buffer of xfs_scrub_vec */
+};
+
+#define XFS_SCRUB_VEC_FLAGS_ALL (0)
+
/*
* ioctl limits
*/
@@ -928,6 +960,7 @@ struct xfs_getparents_by_handle {
#define XFS_IOC_AG_GEOMETRY _IOWR('X', 61, struct xfs_ag_geometry)
#define XFS_IOC_GETPARENTS _IOWR('X', 62, struct xfs_getparents)
#define XFS_IOC_GETPARENTS_BY_HANDLE _IOWR('X', 63, struct xfs_getparents_by_handle)
+#define XFS_IOC_SCRUBV_METADATA _IOWR('X', 64, struct xfs_scrub_vec_head)
/*
* ioctl commands that replace IRIX syssgi()'s
diff --git a/fs/xfs/scrub/scrub.c b/fs/xfs/scrub/scrub.c
index 1456cc11c406..78b00ab85c9c 100644
--- a/fs/xfs/scrub/scrub.c
+++ b/fs/xfs/scrub/scrub.c
@@ -21,6 +21,7 @@
#include "xfs_exchmaps.h"
#include "xfs_dir2.h"
#include "xfs_parent.h"
+#include "xfs_icache.h"
#include "scrub/scrub.h"
#include "scrub/common.h"
#include "scrub/trace.h"
@@ -749,3 +750,151 @@ xfs_ioc_scrub_metadata(
return 0;
}
+
+/* Decide if there have been any scrub failures up to this point. */
+static inline int
+xfs_scrubv_check_barrier(
+ struct xfs_mount *mp,
+ const struct xfs_scrub_vec *vectors,
+ const struct xfs_scrub_vec *stop_vec)
+{
+ const struct xfs_scrub_vec *v;
+ __u32 failmask;
+
+ failmask = stop_vec->sv_flags & XFS_SCRUB_FLAGS_OUT;
+
+ for (v = vectors; v < stop_vec; v++) {
+ if (v->sv_type == XFS_SCRUB_TYPE_BARRIER)
+ continue;
+
+ /*
+ * Runtime errors count as a previous failure, except the ones
+ * used to ask userspace to retry.
+ */
+ switch (v->sv_ret) {
+ case -EBUSY:
+ case -ENOENT:
+ case -EUSERS:
+ case 0:
+ break;
+ default:
+ return -ECANCELED;
+ }
+
+ /*
+ * If any of the out-flags on the scrub vector match the mask
+ * that was set on the barrier vector, that's a previous fail.
+ */
+ if (v->sv_flags & failmask)
+ return -ECANCELED;
+ }
+
+ return 0;
+}
+
+/* Vectored scrub implementation to reduce ioctl calls. */
+int
+xfs_ioc_scrubv_metadata(
+ struct file *file,
+ void __user *arg)
+{
+ struct xfs_scrub_vec_head head;
+ struct xfs_scrub_vec_head __user *uhead = arg;
+ struct xfs_scrub_vec *vectors;
+ struct xfs_scrub_vec __user *uvectors;
+ struct xfs_inode *ip_in = XFS_I(file_inode(file));
+ struct xfs_mount *mp = ip_in->i_mount;
+ struct xfs_scrub_vec *v;
+ size_t vec_bytes;
+ unsigned int i;
+ int error = 0;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ if (copy_from_user(&head, uhead, sizeof(head)))
+ return -EFAULT;
+
+ if (head.svh_reserved)
+ return -EINVAL;
+ if (head.svh_flags & ~XFS_SCRUB_VEC_FLAGS_ALL)
+ return -EINVAL;
+ if (head.svh_nr == 0)
+ return 0;
+
+ vec_bytes = array_size(head.svh_nr, sizeof(struct xfs_scrub_vec));
+ if (vec_bytes > PAGE_SIZE)
+ return -ENOMEM;
+
+ uvectors = (void __user *)(uintptr_t)head.svh_vectors;
+ vectors = memdup_user(uvectors, vec_bytes);
+ if (IS_ERR(vectors))
+ return PTR_ERR(vectors);
+
+ trace_xchk_scrubv_start(ip_in, &head);
+
+ for (i = 0, v = vectors; i < head.svh_nr; i++, v++) {
+ if (v->sv_reserved) {
+ error = -EINVAL;
+ goto out_free;
+ }
+
+ if (v->sv_type == XFS_SCRUB_TYPE_BARRIER &&
+ (v->sv_flags & ~XFS_SCRUB_FLAGS_OUT)) {
+ error = -EINVAL;
+ goto out_free;
+ }
+
+ trace_xchk_scrubv_item(mp, &head, i, v);
+ }
+
+ /* Run all the scrubbers. */
+ for (i = 0, v = vectors; i < head.svh_nr; i++, v++) {
+ struct xfs_scrub_metadata sm = {
+ .sm_type = v->sv_type,
+ .sm_flags = v->sv_flags,
+ .sm_ino = head.svh_ino,
+ .sm_gen = head.svh_gen,
+ .sm_agno = head.svh_agno,
+ };
+
+ if (v->sv_type == XFS_SCRUB_TYPE_BARRIER) {
+ v->sv_ret = xfs_scrubv_check_barrier(mp, vectors, v);
+ if (v->sv_ret) {
+ trace_xchk_scrubv_barrier_fail(mp, &head, i, v);
+ break;
+ }
+
+ continue;
+ }
+
+ v->sv_ret = xfs_scrub_metadata(file, &sm);
+ v->sv_flags = sm.sm_flags;
+
+ trace_xchk_scrubv_outcome(mp, &head, i, v);
+
+ if (head.svh_rest_us) {
+ ktime_t expires;
+
+ expires = ktime_add_ns(ktime_get(),
+ head.svh_rest_us * 1000);
+ set_current_state(TASK_KILLABLE);
+ schedule_hrtimeout(&expires, HRTIMER_MODE_ABS);
+ }
+
+ if (fatal_signal_pending(current)) {
+ error = -EINTR;
+ goto out_free;
+ }
+ }
+
+ if (copy_to_user(uvectors, vectors, vec_bytes) ||
+ copy_to_user(uhead, &head, sizeof(head))) {
+ error = -EFAULT;
+ goto out_free;
+ }
+
+out_free:
+ kfree(vectors);
+ return error;
+}
diff --git a/fs/xfs/scrub/trace.h b/fs/xfs/scrub/trace.h
index b3756722bee1..8ce74bd8530a 100644
--- a/fs/xfs/scrub/trace.h
+++ b/fs/xfs/scrub/trace.h
@@ -69,6 +69,7 @@ TRACE_DEFINE_ENUM(XFS_SCRUB_TYPE_QUOTACHECK);
TRACE_DEFINE_ENUM(XFS_SCRUB_TYPE_NLINKS);
TRACE_DEFINE_ENUM(XFS_SCRUB_TYPE_HEALTHY);
TRACE_DEFINE_ENUM(XFS_SCRUB_TYPE_DIRTREE);
+TRACE_DEFINE_ENUM(XFS_SCRUB_TYPE_BARRIER);
#define XFS_SCRUB_TYPE_STRINGS \
{ XFS_SCRUB_TYPE_PROBE, "probe" }, \
@@ -99,7 +100,8 @@ TRACE_DEFINE_ENUM(XFS_SCRUB_TYPE_DIRTREE);
{ XFS_SCRUB_TYPE_QUOTACHECK, "quotacheck" }, \
{ XFS_SCRUB_TYPE_NLINKS, "nlinks" }, \
{ XFS_SCRUB_TYPE_HEALTHY, "healthy" }, \
- { XFS_SCRUB_TYPE_DIRTREE, "dirtree" }
+ { XFS_SCRUB_TYPE_DIRTREE, "dirtree" }, \
+ { XFS_SCRUB_TYPE_BARRIER, "barrier" }
#define XFS_SCRUB_FLAG_STRINGS \
{ XFS_SCRUB_IFLAG_REPAIR, "repair" }, \
@@ -208,6 +210,81 @@ DEFINE_EVENT(xchk_fsgate_class, name, \
DEFINE_SCRUB_FSHOOK_EVENT(xchk_fsgates_enable);
DEFINE_SCRUB_FSHOOK_EVENT(xchk_fsgates_disable);
+DECLARE_EVENT_CLASS(xchk_vector_head_class,
+ TP_PROTO(struct xfs_inode *ip, struct xfs_scrub_vec_head *vhead),
+ TP_ARGS(ip, vhead),
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(xfs_ino_t, ino)
+ __field(xfs_agnumber_t, agno)
+ __field(xfs_ino_t, inum)
+ __field(unsigned int, gen)
+ __field(unsigned int, flags)
+ __field(unsigned short, rest_us)
+ __field(unsigned short, nr_vecs)
+ ),
+ TP_fast_assign(
+ __entry->dev = ip->i_mount->m_super->s_dev;
+ __entry->ino = ip->i_ino;
+ __entry->agno = vhead->svh_agno;
+ __entry->inum = vhead->svh_ino;
+ __entry->gen = vhead->svh_gen;
+ __entry->flags = vhead->svh_flags;
+ __entry->rest_us = vhead->svh_rest_us;
+ __entry->nr_vecs = vhead->svh_nr;
+ ),
+ TP_printk("dev %d:%d ino 0x%llx agno 0x%x inum 0x%llx gen 0x%x flags 0x%x rest_us %u nr_vecs %u",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __entry->ino,
+ __entry->agno,
+ __entry->inum,
+ __entry->gen,
+ __entry->flags,
+ __entry->rest_us,
+ __entry->nr_vecs)
+)
+#define DEFINE_SCRUBV_HEAD_EVENT(name) \
+DEFINE_EVENT(xchk_vector_head_class, name, \
+ TP_PROTO(struct xfs_inode *ip, struct xfs_scrub_vec_head *vhead), \
+ TP_ARGS(ip, vhead))
+
+DEFINE_SCRUBV_HEAD_EVENT(xchk_scrubv_start);
+
+DECLARE_EVENT_CLASS(xchk_vector_class,
+ TP_PROTO(struct xfs_mount *mp, struct xfs_scrub_vec_head *vhead,
+ unsigned int vec_nr, struct xfs_scrub_vec *v),
+ TP_ARGS(mp, vhead, vec_nr, v),
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(unsigned int, vec_nr)
+ __field(unsigned int, vec_type)
+ __field(unsigned int, vec_flags)
+ __field(int, vec_ret)
+ ),
+ TP_fast_assign(
+ __entry->dev = mp->m_super->s_dev;
+ __entry->vec_nr = vec_nr;
+ __entry->vec_type = v->sv_type;
+ __entry->vec_flags = v->sv_flags;
+ __entry->vec_ret = v->sv_ret;
+ ),
+ TP_printk("dev %d:%d vec[%u] type %s flags %s ret %d",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __entry->vec_nr,
+ __print_symbolic(__entry->vec_type, XFS_SCRUB_TYPE_STRINGS),
+ __print_flags(__entry->vec_flags, "|", XFS_SCRUB_FLAG_STRINGS),
+ __entry->vec_ret)
+)
+#define DEFINE_SCRUBV_EVENT(name) \
+DEFINE_EVENT(xchk_vector_class, name, \
+ TP_PROTO(struct xfs_mount *mp, struct xfs_scrub_vec_head *vhead, \
+ unsigned int vec_nr, struct xfs_scrub_vec *v), \
+ TP_ARGS(mp, vhead, vec_nr, v))
+
+DEFINE_SCRUBV_EVENT(xchk_scrubv_barrier_fail);
+DEFINE_SCRUBV_EVENT(xchk_scrubv_item);
+DEFINE_SCRUBV_EVENT(xchk_scrubv_outcome);
+
TRACE_EVENT(xchk_op_error,
TP_PROTO(struct xfs_scrub *sc, xfs_agnumber_t agno,
xfs_agblock_t bno, int error, void *ret_ip),
diff --git a/fs/xfs/scrub/xfs_scrub.h b/fs/xfs/scrub/xfs_scrub.h
index 02c930f175d0..f17173b83e6f 100644
--- a/fs/xfs/scrub/xfs_scrub.h
+++ b/fs/xfs/scrub/xfs_scrub.h
@@ -8,8 +8,10 @@
#ifndef CONFIG_XFS_ONLINE_SCRUB
# define xfs_ioc_scrub_metadata(f, a) (-ENOTTY)
+# define xfs_ioc_scrubv_metadata(f, a) (-ENOTTY)
#else
int xfs_ioc_scrub_metadata(struct file *file, void __user *arg);
+int xfs_ioc_scrubv_metadata(struct file *file, void __user *arg);
#endif /* CONFIG_XFS_ONLINE_SCRUB */
#endif /* __XFS_SCRUB_H__ */
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index 857b19428984..f0117188f302 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -1413,6 +1413,8 @@ xfs_file_ioctl(
case FS_IOC_GETFSMAP:
return xfs_ioc_getfsmap(ip, arg);
+ case XFS_IOC_SCRUBV_METADATA:
+ return xfs_ioc_scrubv_metadata(filp, arg);
case XFS_IOC_SCRUB_METADATA:
return xfs_ioc_scrub_metadata(filp, arg);
generated by cgit v1.2.3 (git 2.39.0) at 2024-09-04 19:44:33 +0300