From: Brian Foster <bfoster@redhat.com>
To: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: linux-xfs@vger.kernel.org
Subject: Re: [PATCH 03/10] xfs: add xfs_verify_agino_or_null helper
Date: Mon, 4 Feb 2019 14:24:59 -0500 [thread overview]
Message-ID: <20190204192458.GC47560@bfoster> (raw)
In-Reply-To: <154930316106.31814.17027370821230009757.stgit@magnolia>
On Mon, Feb 04, 2019 at 09:59:21AM -0800, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@oracle.com>
>
> Add a new helper to check that a per-AG inode pointer is either null or
> points somewhere valid within that AG.
>
> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
> ---
Reviewed-by: Brian Foster <bfoster@redhat.com>
> fs/xfs/libxfs/xfs_inode_buf.c | 3 +--
> fs/xfs/libxfs/xfs_types.c | 13 +++++++++++++
> fs/xfs/libxfs/xfs_types.h | 2 ++
> fs/xfs/scrub/agheader.c | 8 +++-----
> 4 files changed, 19 insertions(+), 7 deletions(-)
>
>
> diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c
> index 8fa1050c1ae2..77e412a4b6ea 100644
> --- a/fs/xfs/libxfs/xfs_inode_buf.c
> +++ b/fs/xfs/libxfs/xfs_inode_buf.c
> @@ -99,8 +99,7 @@ xfs_inode_buf_verify(
> unlinked_ino = be32_to_cpu(dip->di_next_unlinked);
> di_ok = dip->di_magic == cpu_to_be16(XFS_DINODE_MAGIC) &&
> xfs_dinode_good_version(mp, dip->di_version) &&
> - (unlinked_ino == NULLAGINO ||
> - xfs_verify_agino(mp, agno, unlinked_ino));
> + xfs_verify_agino_or_null(mp, agno, unlinked_ino);
> if (unlikely(XFS_TEST_ERROR(!di_ok, mp,
> XFS_ERRTAG_ITOBP_INOTOBP))) {
> if (readahead) {
> diff --git a/fs/xfs/libxfs/xfs_types.c b/fs/xfs/libxfs/xfs_types.c
> index 0e35b4bdfef7..5b37c99b2811 100644
> --- a/fs/xfs/libxfs/xfs_types.c
> +++ b/fs/xfs/libxfs/xfs_types.c
> @@ -115,6 +115,19 @@ xfs_verify_agino(
> return agino >= first && agino <= last;
> }
>
> +/*
> + * Verify that an AG inode number pointer neither points outside the AG
> + * nor points at static metadata, or is NULLAGINO.
> + */
> +bool
> +xfs_verify_agino_or_null(
> + struct xfs_mount *mp,
> + xfs_agnumber_t agno,
> + xfs_agino_t agino)
> +{
> + return agino == NULLAGINO || xfs_verify_agino(mp, agno, agino);
> +}
> +
> /*
> * Verify that an FS inode number pointer neither points outside the
> * filesystem nor points at static AG metadata.
> diff --git a/fs/xfs/libxfs/xfs_types.h b/fs/xfs/libxfs/xfs_types.h
> index 704b4f308780..c5a25403b4db 100644
> --- a/fs/xfs/libxfs/xfs_types.h
> +++ b/fs/xfs/libxfs/xfs_types.h
> @@ -183,6 +183,8 @@ void xfs_agino_range(struct xfs_mount *mp, xfs_agnumber_t agno,
> xfs_agino_t *first, xfs_agino_t *last);
> bool xfs_verify_agino(struct xfs_mount *mp, xfs_agnumber_t agno,
> xfs_agino_t agino);
> +bool xfs_verify_agino_or_null(struct xfs_mount *mp, xfs_agnumber_t agno,
> + xfs_agino_t agino);
> bool xfs_verify_ino(struct xfs_mount *mp, xfs_ino_t ino);
> bool xfs_internal_inum(struct xfs_mount *mp, xfs_ino_t ino);
> bool xfs_verify_dir_ino(struct xfs_mount *mp, xfs_ino_t ino);
> diff --git a/fs/xfs/scrub/agheader.c b/fs/xfs/scrub/agheader.c
> index 90955ab1e895..9d4e8293d37e 100644
> --- a/fs/xfs/scrub/agheader.c
> +++ b/fs/xfs/scrub/agheader.c
> @@ -864,19 +864,17 @@ xchk_agi(
>
> /* Check inode pointers */
> agino = be32_to_cpu(agi->agi_newino);
> - if (agino != NULLAGINO && !xfs_verify_agino(mp, agno, agino))
> + if (!xfs_verify_agino_or_null(mp, agno, agino))
> xchk_block_set_corrupt(sc, sc->sa.agi_bp);
>
> agino = be32_to_cpu(agi->agi_dirino);
> - if (agino != NULLAGINO && !xfs_verify_agino(mp, agno, agino))
> + if (!xfs_verify_agino_or_null(mp, agno, agino))
> xchk_block_set_corrupt(sc, sc->sa.agi_bp);
>
> /* Check unlinked inode buckets */
> for (i = 0; i < XFS_AGI_UNLINKED_BUCKETS; i++) {
> agino = be32_to_cpu(agi->agi_unlinked[i]);
> - if (agino == NULLAGINO)
> - continue;
> - if (!xfs_verify_agino(mp, agno, agino))
> + if (!xfs_verify_agino_or_null(mp, agno, agino))
> xchk_block_set_corrupt(sc, sc->sa.agi_bp);
> }
>
>
next prev parent reply other threads:[~2019-02-04 19:25 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-04 17:58 [PATCH v2 00/10] xfs: incore unlinked list Darrick J. Wong
2019-02-04 17:59 ` [PATCH 01/10] xfs: clean up iunlink functions Darrick J. Wong
2019-02-04 19:24 ` Brian Foster
2019-02-04 20:51 ` Christoph Hellwig
2019-02-04 17:59 ` [PATCH 02/10] xfs: track unlinked inode counts in per-ag data Darrick J. Wong
2019-02-04 19:24 ` Brian Foster
2019-02-04 20:53 ` Christoph Hellwig
2019-02-05 0:26 ` Darrick J. Wong
2019-02-05 6:55 ` Christoph Hellwig
2019-02-05 7:07 ` Darrick J. Wong
2019-02-05 0:42 ` Darrick J. Wong
2019-02-04 17:59 ` [PATCH 03/10] xfs: add xfs_verify_agino_or_null helper Darrick J. Wong
2019-02-04 19:24 ` Brian Foster [this message]
2019-02-04 20:53 ` Christoph Hellwig
2019-02-04 17:59 ` [PATCH 04/10] xfs: refactor AGI unlinked bucket updates Darrick J. Wong
2019-02-04 19:25 ` Brian Foster
2019-02-04 20:54 ` Christoph Hellwig
2019-02-04 17:59 ` [PATCH 05/10] xfs: strengthen AGI unlinked inode bucket pointer checks Darrick J. Wong
2019-02-04 17:59 ` [PATCH 06/10] xfs: refactor inode unlinked pointer update functions Darrick J. Wong
2019-02-04 20:56 ` Christoph Hellwig
2019-02-04 21:49 ` Darrick J. Wong
2019-02-05 14:23 ` Brian Foster
2019-02-04 17:59 ` [PATCH 07/10] xfs: refactor unlinked list search and mapping to a separate function Darrick J. Wong
2019-02-04 20:58 ` Christoph Hellwig
2019-02-04 22:23 ` Darrick J. Wong
2019-02-04 17:59 ` [PATCH 08/10] xfs: refactor inode update in iunlink_remove Darrick J. Wong
2019-02-04 20:58 ` Christoph Hellwig
2019-02-05 14:23 ` Brian Foster
2019-02-04 17:59 ` [PATCH 09/10] xfs: add tracepoints for high level iunlink operations Darrick J. Wong
2019-02-04 20:59 ` Christoph Hellwig
2019-02-05 14:24 ` Brian Foster
2019-02-04 18:00 ` [PATCH 10/10] xfs: cache unlinked pointers in an rhashtable Darrick J. Wong
2019-02-04 21:08 ` Christoph Hellwig
2019-02-05 1:02 ` Darrick J. Wong
2019-02-05 14:24 ` Brian Foster
2019-02-05 17:53 ` Darrick J. Wong
2019-02-05 17:57 ` Christoph Hellwig
2019-02-05 18:17 ` Darrick J. Wong
2019-02-05 19:06 ` Brian Foster
2019-02-05 19:20 ` Darrick J. Wong
2019-02-05 20:59 ` Dave Chinner
2019-02-06 18:25 ` Darrick J. Wong
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