From: "Darrick J. Wong" <djwong@kernel.org>
To: djwong@kernel.org, chandan.babu@oracle.com, chandanrlinux@gmail.com
Cc: linux-xfs@vger.kernel.org
Subject: [PATCH 07/15] xfs: stricter btree height checking when scanning for btree roots
Date: Thu, 23 Sep 2021 18:26:50 -0700 [thread overview]
Message-ID: <163244681046.2701302.16309740082564344334.stgit@magnolia> (raw)
In-Reply-To: <163244677169.2701302.12882919857957905332.stgit@magnolia>
From: Darrick J. Wong <djwong@kernel.org>
When we're scanning for btree roots to rebuild the AG headers, make sure
that the proposed tree does not exceed the maximum height for that btree
type (and not just XFS_BTREE_MAXLEVELS).
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Chandan Babu R <chandan.babu@oracle.com>
---
| 8 +++++++-
fs/xfs/scrub/repair.h | 3 +++
2 files changed, 10 insertions(+), 1 deletion(-)
--git a/fs/xfs/scrub/agheader_repair.c b/fs/xfs/scrub/agheader_repair.c
index 0f8deee66f15..05c27149b65d 100644
--- a/fs/xfs/scrub/agheader_repair.c
+++ b/fs/xfs/scrub/agheader_repair.c
@@ -122,7 +122,7 @@ xrep_check_btree_root(
xfs_agnumber_t agno = sc->sm->sm_agno;
return xfs_verify_agbno(mp, agno, fab->root) &&
- fab->height <= XFS_BTREE_MAXLEVELS;
+ fab->height <= fab->maxlevels;
}
/*
@@ -339,18 +339,22 @@ xrep_agf(
[XREP_AGF_BNOBT] = {
.rmap_owner = XFS_RMAP_OWN_AG,
.buf_ops = &xfs_bnobt_buf_ops,
+ .maxlevels = sc->mp->m_ag_maxlevels,
},
[XREP_AGF_CNTBT] = {
.rmap_owner = XFS_RMAP_OWN_AG,
.buf_ops = &xfs_cntbt_buf_ops,
+ .maxlevels = sc->mp->m_ag_maxlevels,
},
[XREP_AGF_RMAPBT] = {
.rmap_owner = XFS_RMAP_OWN_AG,
.buf_ops = &xfs_rmapbt_buf_ops,
+ .maxlevels = sc->mp->m_rmap_maxlevels,
},
[XREP_AGF_REFCOUNTBT] = {
.rmap_owner = XFS_RMAP_OWN_REFC,
.buf_ops = &xfs_refcountbt_buf_ops,
+ .maxlevels = sc->mp->m_refc_maxlevels,
},
[XREP_AGF_END] = {
.buf_ops = NULL,
@@ -881,10 +885,12 @@ xrep_agi(
[XREP_AGI_INOBT] = {
.rmap_owner = XFS_RMAP_OWN_INOBT,
.buf_ops = &xfs_inobt_buf_ops,
+ .maxlevels = M_IGEO(sc->mp)->inobt_maxlevels,
},
[XREP_AGI_FINOBT] = {
.rmap_owner = XFS_RMAP_OWN_INOBT,
.buf_ops = &xfs_finobt_buf_ops,
+ .maxlevels = M_IGEO(sc->mp)->inobt_maxlevels,
},
[XREP_AGI_END] = {
.buf_ops = NULL
diff --git a/fs/xfs/scrub/repair.h b/fs/xfs/scrub/repair.h
index 3bb152d52a07..840f74ec431c 100644
--- a/fs/xfs/scrub/repair.h
+++ b/fs/xfs/scrub/repair.h
@@ -44,6 +44,9 @@ struct xrep_find_ag_btree {
/* in: buffer ops */
const struct xfs_buf_ops *buf_ops;
+ /* in: maximum btree height */
+ unsigned int maxlevels;
+
/* out: the highest btree block found and the tree height */
xfs_agblock_t root;
unsigned int height;
next prev parent reply other threads:[~2021-09-24 1:26 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-24 1:26 [PATCHSET RFC v2 chandan 00/15] xfs: support dynamic btree cursor height Darrick J. Wong
2021-09-24 1:26 ` [PATCH 01/15] xfs: fix maxlevels comparisons in the btree staging code Darrick J. Wong
2021-09-24 1:26 ` [PATCH 02/15] xfs: remove xfs_btree_cur_t typedef Darrick J. Wong
2021-09-24 1:26 ` [PATCH 03/15] xfs: don't allocate scrub contexts on the stack Darrick J. Wong
2021-09-24 1:26 ` [PATCH 04/15] xfs: don't track firstrec/firstkey separately in xchk_btree Darrick J. Wong
2021-09-24 1:26 ` [PATCH 05/15] xfs: dynamically allocate btree scrub context structure Darrick J. Wong
2021-09-24 1:26 ` [PATCH 06/15] xfs: stricter btree height checking when looking for errors Darrick J. Wong
2021-09-24 1:26 ` Darrick J. Wong [this message]
2021-09-24 1:26 ` [PATCH 08/15] xfs: check that bc_nlevels never overflows Darrick J. Wong
2021-09-24 1:27 ` [PATCH 09/15] xfs: support dynamic btree cursor heights Darrick J. Wong
2021-09-24 1:27 ` [PATCH 10/15] xfs: refactor btree cursor allocation function Darrick J. Wong
2021-09-24 1:27 ` [PATCH 11/15] xfs: encode the max btree height in the cursor Darrick J. Wong
2021-09-24 1:27 ` [PATCH 12/15] xfs: dynamically allocate cursors based on maxlevels Darrick J. Wong
2021-09-24 1:27 ` [PATCH 13/15] xfs: compute actual maximum btree height for critical reservation calculation Darrick J. Wong
2021-09-24 1:27 ` [PATCH 14/15] xfs: compute the maximum height of the rmap btree when reflink enabled Darrick J. Wong
2021-09-24 1:27 ` [PATCH 15/15] xfs: kill XFS_BTREE_MAXLEVELS Darrick J. Wong
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