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-rw-r--r--fs/xfs/Makefile5
-rw-r--r--fs/xfs/xfs_buf.c11
-rw-r--r--fs/xfs/xfs_fsops.c3
-rw-r--r--fs/xfs/xfs_mount.h1
-rw-r--r--fs/xfs/xfs_notify_failure.c220
-rw-r--r--fs/xfs/xfs_super.h1
6 files changed, 238 insertions, 3 deletions
diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile
index b056cfc6398e..805a0d0a88c1 100644
--- a/fs/xfs/Makefile
+++ b/fs/xfs/Makefile
@@ -129,6 +129,11 @@ xfs-$(CONFIG_SYSCTL) += xfs_sysctl.o
xfs-$(CONFIG_COMPAT) += xfs_ioctl32.o
xfs-$(CONFIG_EXPORTFS_BLOCK_OPS) += xfs_pnfs.o
+# notify failure
+ifeq ($(CONFIG_MEMORY_FAILURE),y)
+xfs-$(CONFIG_FS_DAX) += xfs_notify_failure.o
+endif
+
# online scrub/repair
ifeq ($(CONFIG_XFS_ONLINE_SCRUB),y)
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index 1ec2a7b6d44e..59c6b62fde57 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -5,6 +5,7 @@
*/
#include "xfs.h"
#include <linux/backing-dev.h>
+#include <linux/dax.h>
#include "xfs_shared.h"
#include "xfs_format.h"
@@ -1911,7 +1912,7 @@ xfs_free_buftarg(
list_lru_destroy(&btp->bt_lru);
blkdev_issue_flush(btp->bt_bdev);
- fs_put_dax(btp->bt_daxdev, NULL);
+ fs_put_dax(btp->bt_daxdev, btp->bt_mount);
kmem_free(btp);
}
@@ -1958,14 +1959,18 @@ xfs_alloc_buftarg(
struct block_device *bdev)
{
xfs_buftarg_t *btp;
+ const struct dax_holder_operations *ops = NULL;
+#if defined(CONFIG_FS_DAX) && defined(CONFIG_MEMORY_FAILURE)
+ ops = &xfs_dax_holder_operations;
+#endif
btp = kmem_zalloc(sizeof(*btp), KM_NOFS);
btp->bt_mount = mp;
btp->bt_dev = bdev->bd_dev;
btp->bt_bdev = bdev;
- btp->bt_daxdev = fs_dax_get_by_bdev(bdev, &btp->bt_dax_part_off, NULL,
- NULL);
+ btp->bt_daxdev = fs_dax_get_by_bdev(bdev, &btp->bt_dax_part_off,
+ mp, ops);
/*
* Buffer IO error rate limiting. Limit it to no more than 10 messages
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index d4a77c53f94b..0bc74a71a095 100644
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -528,6 +528,9 @@ xfs_do_force_shutdown(
} else if (flags & SHUTDOWN_CORRUPT_INCORE) {
tag = XFS_PTAG_SHUTDOWN_CORRUPT;
why = "Corruption of in-memory data";
+ } else if (flags & SHUTDOWN_CORRUPT_ONDISK) {
+ tag = XFS_PTAG_SHUTDOWN_CORRUPT;
+ why = "Corruption of on-disk metadata";
} else {
tag = XFS_PTAG_SHUTDOWN_IOERROR;
why = "Metadata I/O Error";
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index ba5d42abf66e..32a67f78fdd1 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -454,6 +454,7 @@ void xfs_do_force_shutdown(struct xfs_mount *mp, uint32_t flags, char *fname,
#define SHUTDOWN_LOG_IO_ERROR (1u << 1) /* write attempt to the log failed */
#define SHUTDOWN_FORCE_UMOUNT (1u << 2) /* shutdown from a forced unmount */
#define SHUTDOWN_CORRUPT_INCORE (1u << 3) /* corrupt in-memory structures */
+#define SHUTDOWN_CORRUPT_ONDISK (1u << 4) /* corrupt metadata on device */
#define XFS_SHUTDOWN_STRINGS \
{ SHUTDOWN_META_IO_ERROR, "metadata_io" }, \
diff --git a/fs/xfs/xfs_notify_failure.c b/fs/xfs/xfs_notify_failure.c
new file mode 100644
index 000000000000..aa8dc27c599c
--- /dev/null
+++ b/fs/xfs/xfs_notify_failure.c
@@ -0,0 +1,220 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2022 Fujitsu. All Rights Reserved.
+ */
+
+#include "xfs.h"
+#include "xfs_shared.h"
+#include "xfs_format.h"
+#include "xfs_log_format.h"
+#include "xfs_trans_resv.h"
+#include "xfs_mount.h"
+#include "xfs_alloc.h"
+#include "xfs_bit.h"
+#include "xfs_btree.h"
+#include "xfs_inode.h"
+#include "xfs_icache.h"
+#include "xfs_rmap.h"
+#include "xfs_rmap_btree.h"
+#include "xfs_rtalloc.h"
+#include "xfs_trans.h"
+
+#include <linux/mm.h>
+#include <linux/dax.h>
+
+struct failure_info {
+ xfs_agblock_t startblock;
+ xfs_extlen_t blockcount;
+ int mf_flags;
+};
+
+static pgoff_t
+xfs_failure_pgoff(
+ struct xfs_mount *mp,
+ const struct xfs_rmap_irec *rec,
+ const struct failure_info *notify)
+{
+ loff_t pos = XFS_FSB_TO_B(mp, rec->rm_offset);
+
+ if (notify->startblock > rec->rm_startblock)
+ pos += XFS_FSB_TO_B(mp,
+ notify->startblock - rec->rm_startblock);
+ return pos >> PAGE_SHIFT;
+}
+
+static unsigned long
+xfs_failure_pgcnt(
+ struct xfs_mount *mp,
+ const struct xfs_rmap_irec *rec,
+ const struct failure_info *notify)
+{
+ xfs_agblock_t end_rec;
+ xfs_agblock_t end_notify;
+ xfs_agblock_t start_cross;
+ xfs_agblock_t end_cross;
+
+ start_cross = max(rec->rm_startblock, notify->startblock);
+
+ end_rec = rec->rm_startblock + rec->rm_blockcount;
+ end_notify = notify->startblock + notify->blockcount;
+ end_cross = min(end_rec, end_notify);
+
+ return XFS_FSB_TO_B(mp, end_cross - start_cross) >> PAGE_SHIFT;
+}
+
+static int
+xfs_dax_failure_fn(
+ struct xfs_btree_cur *cur,
+ const struct xfs_rmap_irec *rec,
+ void *data)
+{
+ struct xfs_mount *mp = cur->bc_mp;
+ struct xfs_inode *ip;
+ struct failure_info *notify = data;
+ int error = 0;
+
+ if (XFS_RMAP_NON_INODE_OWNER(rec->rm_owner) ||
+ (rec->rm_flags & (XFS_RMAP_ATTR_FORK | XFS_RMAP_BMBT_BLOCK))) {
+ xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_ONDISK);
+ return -EFSCORRUPTED;
+ }
+
+ /* Get files that incore, filter out others that are not in use. */
+ error = xfs_iget(mp, cur->bc_tp, rec->rm_owner, XFS_IGET_INCORE,
+ 0, &ip);
+ /* Continue the rmap query if the inode isn't incore */
+ if (error == -ENODATA)
+ return 0;
+ if (error)
+ return error;
+
+ error = mf_dax_kill_procs(VFS_I(ip)->i_mapping,
+ xfs_failure_pgoff(mp, rec, notify),
+ xfs_failure_pgcnt(mp, rec, notify),
+ notify->mf_flags);
+ xfs_irele(ip);
+ return error;
+}
+
+static int
+xfs_dax_notify_ddev_failure(
+ struct xfs_mount *mp,
+ xfs_daddr_t daddr,
+ xfs_daddr_t bblen,
+ int mf_flags)
+{
+ struct xfs_trans *tp = NULL;
+ struct xfs_btree_cur *cur = NULL;
+ struct xfs_buf *agf_bp = NULL;
+ int error = 0;
+ xfs_fsblock_t fsbno = XFS_DADDR_TO_FSB(mp, daddr);
+ xfs_agnumber_t agno = XFS_FSB_TO_AGNO(mp, fsbno);
+ xfs_fsblock_t end_fsbno = XFS_DADDR_TO_FSB(mp, daddr + bblen);
+ xfs_agnumber_t end_agno = XFS_FSB_TO_AGNO(mp, end_fsbno);
+
+ error = xfs_trans_alloc_empty(mp, &tp);
+ if (error)
+ return error;
+
+ for (; agno <= end_agno; agno++) {
+ struct xfs_rmap_irec ri_low = { };
+ struct xfs_rmap_irec ri_high;
+ struct failure_info notify;
+ struct xfs_agf *agf;
+ xfs_agblock_t agend;
+
+ error = xfs_alloc_read_agf(mp, tp, agno, 0, &agf_bp);
+ if (error)
+ break;
+
+ cur = xfs_rmapbt_init_cursor(mp, tp, agf_bp, agf_bp->b_pag);
+
+ /*
+ * Set the rmap range from ri_low to ri_high, which represents
+ * a [start, end] where we looking for the files or metadata.
+ */
+ memset(&ri_high, 0xFF, sizeof(ri_high));
+ ri_low.rm_startblock = XFS_FSB_TO_AGBNO(mp, fsbno);
+ if (agno == end_agno)
+ ri_high.rm_startblock = XFS_FSB_TO_AGBNO(mp, end_fsbno);
+
+ agf = agf_bp->b_addr;
+ agend = min(be32_to_cpu(agf->agf_length),
+ ri_high.rm_startblock);
+ notify.startblock = ri_low.rm_startblock;
+ notify.blockcount = agend - ri_low.rm_startblock;
+
+ error = xfs_rmap_query_range(cur, &ri_low, &ri_high,
+ xfs_dax_failure_fn, &notify);
+ xfs_btree_del_cursor(cur, error);
+ xfs_trans_brelse(tp, agf_bp);
+ if (error)
+ break;
+
+ fsbno = XFS_AGB_TO_FSB(mp, agno + 1, 0);
+ }
+
+ xfs_trans_cancel(tp);
+ return error;
+}
+
+static int
+xfs_dax_notify_failure(
+ struct dax_device *dax_dev,
+ u64 offset,
+ u64 len,
+ int mf_flags)
+{
+ struct xfs_mount *mp = dax_holder(dax_dev);
+ u64 ddev_start;
+ u64 ddev_end;
+
+ if (!(mp->m_sb.sb_flags & SB_BORN)) {
+ xfs_warn(mp, "filesystem is not ready for notify_failure()!");
+ return -EIO;
+ }
+
+ if (mp->m_rtdev_targp && mp->m_rtdev_targp->bt_daxdev == dax_dev) {
+ xfs_warn(mp,
+ "notify_failure() not supported on realtime device!");
+ return -EOPNOTSUPP;
+ }
+
+ if (mp->m_logdev_targp && mp->m_logdev_targp->bt_daxdev == dax_dev &&
+ mp->m_logdev_targp != mp->m_ddev_targp) {
+ xfs_err(mp, "ondisk log corrupt, shutting down fs!");
+ xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_ONDISK);
+ return -EFSCORRUPTED;
+ }
+
+ if (!xfs_has_rmapbt(mp)) {
+ xfs_warn(mp, "notify_failure() needs rmapbt enabled!");
+ return -EOPNOTSUPP;
+ }
+
+ ddev_start = mp->m_ddev_targp->bt_dax_part_off;
+ ddev_end = ddev_start + bdev_nr_bytes(mp->m_ddev_targp->bt_bdev) - 1;
+
+ /* Ignore the range out of filesystem area */
+ if (offset + len < ddev_start)
+ return -ENXIO;
+ if (offset > ddev_end)
+ return -ENXIO;
+
+ /* Calculate the real range when it touches the boundary */
+ if (offset > ddev_start)
+ offset -= ddev_start;
+ else {
+ len -= ddev_start - offset;
+ offset = 0;
+ }
+ if (offset + len > ddev_end)
+ len -= ddev_end - offset;
+
+ return xfs_dax_notify_ddev_failure(mp, BTOBB(offset), BTOBB(len),
+ mf_flags);
+}
+
+const struct dax_holder_operations xfs_dax_holder_operations = {
+ .notify_failure = xfs_dax_notify_failure,
+};
diff --git a/fs/xfs/xfs_super.h b/fs/xfs/xfs_super.h
index 3cd5a51bace1..364e2c2648a8 100644
--- a/fs/xfs/xfs_super.h
+++ b/fs/xfs/xfs_super.h
@@ -92,6 +92,7 @@ extern xfs_agnumber_t xfs_set_inode_alloc(struct xfs_mount *,
extern const struct export_operations xfs_export_operations;
extern const struct quotactl_ops xfs_quotactl_operations;
+extern const struct dax_holder_operations xfs_dax_holder_operations;
extern void xfs_reinit_percpu_counters(struct xfs_mount *mp);
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-03 17:43:30 +0000