Plumb in the pieces necessary to check the free space btrees.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
fs/xfs/libxfs/xfs_alloc_btree.c | 156 +++++++++++++++++++++++++++++----------
fs/xfs/libxfs/xfs_fs.h | 4 +
fs/xfs/xfs_scrub.c | 80 ++++++++++++++++++++
3 files changed, 197 insertions(+), 43 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_alloc_btree.c b/fs/xfs/libxfs/xfs_alloc_btree.c
index 5ba2dac..d6d81cb 100644
--- a/fs/xfs/libxfs/xfs_alloc_btree.c
+++ b/fs/xfs/libxfs/xfs_alloc_btree.c
@@ -205,19 +205,28 @@ xfs_allocbt_init_key_from_rec(
union xfs_btree_key *key,
union xfs_btree_rec *rec)
{
- ASSERT(rec->alloc.ar_startblock != 0);
-
key->alloc.ar_startblock = rec->alloc.ar_startblock;
key->alloc.ar_blockcount = rec->alloc.ar_blockcount;
}
STATIC void
+xfs_bnobt_init_high_key_from_rec(
+ union xfs_btree_key *key,
+ union xfs_btree_rec *rec)
+{
+ __u32 x;
+
+ x = be32_to_cpu(rec->alloc.ar_startblock);
+ x += be32_to_cpu(rec->alloc.ar_blockcount) - 1;
+ key->alloc.ar_startblock = cpu_to_be32(x);
+ key->alloc.ar_blockcount = 0;
+}
+
+STATIC void
xfs_allocbt_init_rec_from_cur(
struct xfs_btree_cur *cur,
union xfs_btree_rec *rec)
{
- ASSERT(cur->bc_rec.a.ar_startblock != 0);
-
rec->alloc.ar_startblock = cpu_to_be32(cur->bc_rec.a.ar_startblock);
rec->alloc.ar_blockcount = cpu_to_be32(cur->bc_rec.a.ar_blockcount);
}
@@ -236,18 +245,24 @@ xfs_allocbt_init_ptr_from_cur(
}
STATIC __int64_t
-xfs_allocbt_key_diff(
+xfs_bnobt_key_diff(
struct xfs_btree_cur *cur,
union xfs_btree_key *key)
{
xfs_alloc_rec_incore_t *rec = &cur->bc_rec.a;
xfs_alloc_key_t *kp = &key->alloc;
- __int64_t diff;
- if (cur->bc_btnum == XFS_BTNUM_BNO) {
- return (__int64_t)be32_to_cpu(kp->ar_startblock) -
- rec->ar_startblock;
- }
+ return (__int64_t)be32_to_cpu(kp->ar_startblock) - rec->ar_startblock;
+}
+
+STATIC __int64_t
+xfs_cntbt_key_diff(
+ struct xfs_btree_cur *cur,
+ union xfs_btree_key *key)
+{
+ xfs_alloc_rec_incore_t *rec = &cur->bc_rec.a;
+ xfs_alloc_key_t *kp = &key->alloc;
+ __int64_t diff;
diff = (__int64_t)be32_to_cpu(kp->ar_blockcount) - rec->ar_blockcount;
if (diff)
@@ -256,6 +271,33 @@ xfs_allocbt_key_diff(
return (__int64_t)be32_to_cpu(kp->ar_startblock) - rec->ar_startblock;
}
+STATIC __int64_t
+xfs_bnobt_diff_two_keys(
+ struct xfs_btree_cur *cur,
+ union xfs_btree_key *k1,
+ union xfs_btree_key *k2)
+{
+ return (__int64_t)be32_to_cpu(k1->alloc.ar_startblock) -
+ be32_to_cpu(k2->alloc.ar_startblock);
+}
+
+STATIC __int64_t
+xfs_cntbt_diff_two_keys(
+ struct xfs_btree_cur *cur,
+ union xfs_btree_key *k1,
+ union xfs_btree_key *k2)
+{
+ __int64_t diff;
+
+ diff = be32_to_cpu(k1->alloc.ar_blockcount) -
+ be32_to_cpu(k2->alloc.ar_blockcount);
+ if (diff)
+ return diff;
+
+ return be32_to_cpu(k1->alloc.ar_startblock) -
+ be32_to_cpu(k2->alloc.ar_startblock);
+}
+
static bool
xfs_allocbt_verify(
struct xfs_buf *bp)
@@ -344,46 +386,76 @@ const struct xfs_buf_ops xfs_allocbt_buf_ops = {
};
-#if defined(DEBUG) || defined(XFS_WARN)
STATIC int
-xfs_allocbt_keys_inorder(
+xfs_bnobt_keys_inorder(
struct xfs_btree_cur *cur,
union xfs_btree_key *k1,
union xfs_btree_key *k2)
{
- if (cur->bc_btnum == XFS_BTNUM_BNO) {
- return be32_to_cpu(k1->alloc.ar_startblock) <
- be32_to_cpu(k2->alloc.ar_startblock);
- } else {
- return be32_to_cpu(k1->alloc.ar_blockcount) <
- be32_to_cpu(k2->alloc.ar_blockcount) ||
- (k1->alloc.ar_blockcount == k2->alloc.ar_blockcount &&
- be32_to_cpu(k1->alloc.ar_startblock) <
- be32_to_cpu(k2->alloc.ar_startblock));
- }
+ return be32_to_cpu(k1->alloc.ar_startblock) <
+ be32_to_cpu(k2->alloc.ar_startblock);
}
STATIC int
-xfs_allocbt_recs_inorder(
+xfs_bnobt_recs_inorder(
struct xfs_btree_cur *cur,
union xfs_btree_rec *r1,
union xfs_btree_rec *r2)
{
- if (cur->bc_btnum == XFS_BTNUM_BNO) {
- return be32_to_cpu(r1->alloc.ar_startblock) +
- be32_to_cpu(r1->alloc.ar_blockcount) <=
- be32_to_cpu(r2->alloc.ar_startblock);
- } else {
- return be32_to_cpu(r1->alloc.ar_blockcount) <
- be32_to_cpu(r2->alloc.ar_blockcount) ||
- (r1->alloc.ar_blockcount == r2->alloc.ar_blockcount &&
- be32_to_cpu(r1->alloc.ar_startblock) <
- be32_to_cpu(r2->alloc.ar_startblock));
- }
+ return be32_to_cpu(r1->alloc.ar_startblock) +
+ be32_to_cpu(r1->alloc.ar_blockcount) <=
+ be32_to_cpu(r2->alloc.ar_startblock);
}
-#endif /* DEBUG */
-static const struct xfs_btree_ops xfs_allocbt_ops = {
+STATIC int
+xfs_cntbt_keys_inorder(
+ struct xfs_btree_cur *cur,
+ union xfs_btree_key *k1,
+ union xfs_btree_key *k2)
+{
+ return be32_to_cpu(k1->alloc.ar_blockcount) <
+ be32_to_cpu(k2->alloc.ar_blockcount) ||
+ (k1->alloc.ar_blockcount == k2->alloc.ar_blockcount &&
+ be32_to_cpu(k1->alloc.ar_startblock) <
+ be32_to_cpu(k2->alloc.ar_startblock));
+}
+
+STATIC int
+xfs_cntbt_recs_inorder(
+ struct xfs_btree_cur *cur,
+ union xfs_btree_rec *r1,
+ union xfs_btree_rec *r2)
+{
+ return be32_to_cpu(r1->alloc.ar_blockcount) <
+ be32_to_cpu(r2->alloc.ar_blockcount) ||
+ (r1->alloc.ar_blockcount == r2->alloc.ar_blockcount &&
+ be32_to_cpu(r1->alloc.ar_startblock) <
+ be32_to_cpu(r2->alloc.ar_startblock));
+}
+
+static const struct xfs_btree_ops xfs_bnobt_ops = {
+ .rec_len = sizeof(xfs_alloc_rec_t),
+ .key_len = sizeof(xfs_alloc_key_t),
+
+ .dup_cursor = xfs_allocbt_dup_cursor,
+ .set_root = xfs_allocbt_set_root,
+ .alloc_block = xfs_allocbt_alloc_block,
+ .free_block = xfs_allocbt_free_block,
+ .update_lastrec = xfs_allocbt_update_lastrec,
+ .get_minrecs = xfs_allocbt_get_minrecs,
+ .get_maxrecs = xfs_allocbt_get_maxrecs,
+ .init_key_from_rec = xfs_allocbt_init_key_from_rec,
+ .init_high_key_from_rec = xfs_bnobt_init_high_key_from_rec,
+ .init_rec_from_cur = xfs_allocbt_init_rec_from_cur,
+ .init_ptr_from_cur = xfs_allocbt_init_ptr_from_cur,
+ .key_diff = xfs_bnobt_key_diff,
+ .buf_ops = &xfs_allocbt_buf_ops,
+ .diff_two_keys = xfs_bnobt_diff_two_keys,
+ .keys_inorder = xfs_bnobt_keys_inorder,
+ .recs_inorder = xfs_bnobt_recs_inorder,
+};
+
+static const struct xfs_btree_ops xfs_cntbt_ops = {
.rec_len = sizeof(xfs_alloc_rec_t),
.key_len = sizeof(xfs_alloc_key_t),
@@ -397,12 +469,11 @@ static const struct xfs_btree_ops xfs_allocbt_ops = {
.init_key_from_rec = xfs_allocbt_init_key_from_rec,
.init_rec_from_cur = xfs_allocbt_init_rec_from_cur,
.init_ptr_from_cur = xfs_allocbt_init_ptr_from_cur,
- .key_diff = xfs_allocbt_key_diff,
+ .key_diff = xfs_cntbt_key_diff,
.buf_ops = &xfs_allocbt_buf_ops,
-#if defined(DEBUG) || defined(XFS_WARN)
- .keys_inorder = xfs_allocbt_keys_inorder,
- .recs_inorder = xfs_allocbt_recs_inorder,
-#endif
+ .diff_two_keys = xfs_cntbt_diff_two_keys,
+ .keys_inorder = xfs_cntbt_keys_inorder,
+ .recs_inorder = xfs_cntbt_recs_inorder,
};
/*
@@ -427,12 +498,13 @@ xfs_allocbt_init_cursor(
cur->bc_mp = mp;
cur->bc_btnum = btnum;
cur->bc_blocklog = mp->m_sb.sb_blocklog;
- cur->bc_ops = &xfs_allocbt_ops;
if (btnum == XFS_BTNUM_CNT) {
+ cur->bc_ops = &xfs_cntbt_ops;
cur->bc_nlevels = be32_to_cpu(agf->agf_levels[XFS_BTNUM_CNT]);
cur->bc_flags = XFS_BTREE_LASTREC_UPDATE;
} else {
+ cur->bc_ops = &xfs_bnobt_ops;
cur->bc_nlevels = be32_to_cpu(agf->agf_levels[XFS_BTNUM_BNO]);
}
diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h
index 2d320a7..2cb47e2 100644
--- a/fs/xfs/libxfs/xfs_fs.h
+++ b/fs/xfs/libxfs/xfs_fs.h
@@ -539,7 +539,9 @@ struct xfs_scrub_metadata {
#define XFS_SCRUB_TYPE_AGF 1 /* AG free header */
#define XFS_SCRUB_TYPE_AGFL 2 /* AG free list */
#define XFS_SCRUB_TYPE_AGI 3 /* AG inode header */
-#define XFS_SCRUB_TYPE_MAX 3
+#define XFS_SCRUB_TYPE_BNOBT 4 /* freesp by block btree */
+#define XFS_SCRUB_TYPE_CNTBT 5 /* freesp by length btree */
+#define XFS_SCRUB_TYPE_MAX 5
#define XFS_SCRUB_FLAGS_ALL 0x0 /* no flags yet */
diff --git a/fs/xfs/xfs_scrub.c b/fs/xfs/xfs_scrub.c
index 2b1d669..b93dedb 100644
--- a/fs/xfs/xfs_scrub.c
+++ b/fs/xfs/xfs_scrub.c
@@ -959,6 +959,84 @@ xfs_scrub_agi(
return error;
}
+/* Free space btree scrubber. */
+
+/* Scrub a bnobt/cntbt record. */
+STATIC int
+xfs_scrub_allocbt_helper(
+ struct xfs_scrub_btree *bs,
+ union xfs_btree_rec *rec)
+{
+ struct xfs_mount *mp = bs->cur->bc_mp;
+ struct xfs_agf *agf;
+ xfs_agblock_t bno;
+ xfs_extlen_t len;
+ int error = 0;
+
+ bno = be32_to_cpu(rec->alloc.ar_startblock);
+ len = be32_to_cpu(rec->alloc.ar_blockcount);
+ agf = XFS_BUF_TO_AGF(bs->agf_bp);
+
+ XFS_BTREC_SCRUB_CHECK(bs, bno < mp->m_sb.sb_agblocks);
+ XFS_BTREC_SCRUB_CHECK(bs, bno < be32_to_cpu(agf->agf_length));
+ XFS_BTREC_SCRUB_CHECK(bs, bno < bno + len);
+ XFS_BTREC_SCRUB_CHECK(bs, (unsigned long long)bno + len <=
+ mp->m_sb.sb_agblocks);
+ XFS_BTREC_SCRUB_CHECK(bs, (unsigned long long)bno + len <=
+ be32_to_cpu(agf->agf_length));
+
+ return error;
+}
+
+/* Scrub the freespace btrees for some AG. */
+STATIC int
+xfs_scrub_allocbt(
+ struct xfs_mount *mp,
+ struct xfs_scrub_metadata *sm,
+ xfs_btnum_t which)
+{
+ struct xfs_scrub_btree bs;
+ xfs_agnumber_t agno;
+ int error;
+
+ if (sm->control >= mp->m_sb.sb_agcount || sm->flags)
+ return -EINVAL;
+ agno = sm->control;
+
+ error = xfs_scrub_btree_get_ag_headers(mp, &bs, agno);
+ if (error)
+ return error;
+
+ bs.cur = xfs_allocbt_init_cursor(mp, NULL, bs.agf_bp, agno, which);
+ bs.scrub_rec = xfs_scrub_allocbt_helper;
+ xfs_rmap_ag_owner(&bs.oinfo, XFS_RMAP_OWN_AG);
+ error = xfs_scrub_btree(&bs);
+ xfs_btree_del_cursor(bs.cur,
+ error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR);
+ xfs_scrub_btree_put_ag_headers(&bs);
+
+ if (!error && bs.error)
+ error = bs.error;
+
+ return error;
+}
+
+STATIC int
+xfs_scrub_bnobt(
+ struct xfs_inode *ip,
+ struct xfs_scrub_metadata *sm)
+{
+ return xfs_scrub_allocbt(ip->i_mount, sm, XFS_BTNUM_BNO);
+}
+
+STATIC int
+xfs_scrub_cntbt(
+ struct xfs_inode *ip,
+ struct xfs_scrub_metadata *sm)
+{
+ return xfs_scrub_allocbt(ip->i_mount, sm, XFS_BTNUM_CNT);
+}
+
/* Scrubbing dispatch. */
struct xfs_scrub_meta_fns {
@@ -971,6 +1049,8 @@ static const struct xfs_scrub_meta_fns meta_scrub_fns[] = {
{xfs_scrub_agf, NULL},
{xfs_scrub_agfl, NULL},
{xfs_scrub_agi, NULL},
+ {xfs_scrub_bnobt, NULL},
+ {xfs_scrub_cntbt, NULL},
};
/* Dispatch metadata scrubbing. */
|