From: Christoph Hellwig <hch@lst.de>
To: Carlos Maiolino <cem@kernel.org>
Cc: "Darrick J. Wong" <djwong@kernel.org>, linux-xfs@vger.kernel.org
Subject: [PATCH 04/12] xfs: remove spurious XBF_DONE clearing on readahead validation failure
Date: Wed, 15 Jul 2026 16:50:57 +0200 [thread overview]
Message-ID: <20260715145147.95654-5-hch@lst.de> (raw)
In-Reply-To: <20260715145147.95654-1-hch@lst.de>
Both callers of ->verify_read already do this, so don't duplicate the
flag manipulation.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
fs/xfs/libxfs/xfs_dquot_buf.c | 8 +++-----
fs/xfs/libxfs/xfs_inode_buf.c | 15 ++++++++-------
2 files changed, 11 insertions(+), 12 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_dquot_buf.c b/fs/xfs/libxfs/xfs_dquot_buf.c
index bbada0d3cc08..4736f66e2a9a 100644
--- a/fs/xfs/libxfs/xfs_dquot_buf.c
+++ b/fs/xfs/libxfs/xfs_dquot_buf.c
@@ -252,8 +252,8 @@ xfs_dquot_buf_read_verify(
/*
* readahead errors are silent and simply leave the buffer as !done so a real
* read will then be run with the xfs_dquot_buf_ops verifier. See
- * xfs_inode_buf_verify() for why we use EIO and ~XBF_DONE here rather than
- * reporting the failure.
+ * xfs_inode_buf_verify() for why we use EIO here rather than reporting the
+ * failure.
*/
static void
xfs_dquot_buf_readahead_verify(
@@ -262,10 +262,8 @@ xfs_dquot_buf_readahead_verify(
struct xfs_mount *mp = bp->b_mount;
if (!xfs_dquot_buf_verify_crc(mp, bp, true) ||
- xfs_dquot_buf_verify(mp, bp, true) != NULL) {
+ xfs_dquot_buf_verify(mp, bp, true) != NULL)
xfs_buf_ioerror(bp, -EIO);
- bp->b_flags &= ~XBF_DONE;
- }
}
/*
diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c
index 336ef843f2fe..e4c3f7b24e95 100644
--- a/fs/xfs/libxfs/xfs_inode_buf.c
+++ b/fs/xfs/libxfs/xfs_inode_buf.c
@@ -29,12 +29,14 @@
* has not had the inode cores stamped into it. Hence for readahead, the buffer
* may be potentially invalid.
*
- * If the readahead buffer is invalid, we need to mark it with an error and
- * clear the DONE status of the buffer so that a followup read will re-read it
- * from disk. We don't report the error otherwise to avoid warnings during log
- * recovery and we don't get unnecessary panics on debug kernels. We use EIO here
- * because all we want to do is say readahead failed; there is no-one to report
- * the error to, so this will distinguish it from a non-ra verifier failure.
+ * If the readahead buffer is invalid, we need to mark it with an error so that a
+ * followup read will re-read it from disk.
+ *
+ * We don't report the error otherwise to avoid warnings during log recovery and
+ * we don't get unnecessary panics on debug kernels. Use EIO here because all
+ * we want to do is say readahead failed; there is no-one to report the error
+ * to, so this will distinguish it from a non-ra verifier failure.
+ *
* Changes to this readahead error behaviour also need to be reflected in
* xfs_dquot_buf_readahead_verify().
*/
@@ -64,7 +66,6 @@ xfs_inode_buf_verify(
if (unlikely(!di_ok ||
XFS_TEST_ERROR(mp, XFS_ERRTAG_ITOBP_INOTOBP))) {
if (readahead) {
- bp->b_flags &= ~XBF_DONE;
xfs_buf_ioerror(bp, -EIO);
return;
}
--
2.53.0
next prev parent reply other threads:[~2026-07-15 14:52 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-15 14:50 misc buffer cache improvements Christoph Hellwig
2026-07-15 14:50 ` [PATCH 01/12] xfs: don't get a pag reference in xfs_buf_get_map Christoph Hellwig
2026-07-15 14:50 ` [PATCH 02/12] xfs: consolidate buffer locking " Christoph Hellwig
2026-07-16 13:12 ` Brian Foster
2026-07-15 14:50 ` [PATCH 03/12] xfs: split out a lower-level xfs_buf_get_map helper from xfs_find_get_buf Christoph Hellwig
2026-07-15 14:50 ` Christoph Hellwig [this message]
2026-07-15 14:50 ` [PATCH 05/12] xfs: remove _XBF_LOGRECOVERY Christoph Hellwig
2026-07-15 14:50 ` [PATCH 06/12] xfs: hide b_flags manipulation from code outside of xfs_buf.c Christoph Hellwig
2026-07-15 14:51 ` [PATCH 07/12] xfs: use WRITE_ONCE to update b_flags Christoph Hellwig
2026-07-15 14:51 ` [PATCH 08/12] xfs: don't reverify buffers in xfs_buf_readahead_map Christoph Hellwig
2026-07-15 14:51 ` [PATCH 09/12] xfs: use goto based error unwinding in xfs_buf_read_map Christoph Hellwig
2026-07-15 14:51 ` [PATCH 10/12] xfs: merge xfs_buf_reverify into xfs_buf_read_map Christoph Hellwig
2026-07-15 14:51 ` [PATCH 11/12] xfs: move buffer locking out of xfs_find_get_buf Christoph Hellwig
2026-07-15 14:51 ` [PATCH 12/12] xfs: add lockless xfs_buf_readahead_map fast path Christoph Hellwig
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