From: Chandan Babu R <chandan.babu@oracle.com>
To: djwong@kernel.org
Cc: chandan.babu@oracle.com, linux-xfs@vger.kernel.org,
amir73il@gmail.com, leah.rumancik@gmail.com
Subject: [PATCH 5.4 CANDIDATE 05/11] xfs: fix IOCB_NOWAIT handling in xfs_file_dio_aio_read
Date: Tue, 4 Oct 2022 15:58:17 +0530 [thread overview]
Message-ID: <20221004102823.1486946-6-chandan.babu@oracle.com> (raw)
In-Reply-To: <20221004102823.1486946-1-chandan.babu@oracle.com>
From: Christoph Hellwig <hch@lst.de>
commit 7b53b868a1812a9a6ab5e69249394bd37f29ce2c upstream.
Direct I/O reads can also be used with RWF_NOWAIT & co. Fix the inode
locking in xfs_file_dio_aio_read to take IOCB_NOWAIT into account.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Chandan Babu R <chandan.babu@oracle.com>
---
fs/xfs/xfs_file.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 203065a64765..e41c13ffa5a4 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -187,7 +187,12 @@ xfs_file_dio_aio_read(
file_accessed(iocb->ki_filp);
- xfs_ilock(ip, XFS_IOLOCK_SHARED);
+ if (iocb->ki_flags & IOCB_NOWAIT) {
+ if (!xfs_ilock_nowait(ip, XFS_IOLOCK_SHARED))
+ return -EAGAIN;
+ } else {
+ xfs_ilock(ip, XFS_IOLOCK_SHARED);
+ }
ret = iomap_dio_rw(iocb, to, &xfs_iomap_ops, NULL);
xfs_iunlock(ip, XFS_IOLOCK_SHARED);
--
2.35.1
next prev parent reply other threads:[~2022-10-04 10:29 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-04 10:28 [PATCH 5.4 CANDIDATE 00/11] xfs stable candidate patches for 5.4.y (from v5.6) Chandan Babu R
2022-10-04 10:28 ` [PATCH 5.4 CANDIDATE 01/11] xfs: fix misuse of the XFS_ATTR_INCOMPLETE flag Chandan Babu R
2022-10-04 10:28 ` [PATCH 5.4 CANDIDATE 02/11] xfs: introduce XFS_MAX_FILEOFF Chandan Babu R
2022-10-04 10:28 ` [PATCH 5.4 CANDIDATE 03/11] xfs: truncate should remove all blocks, not just to the end of the page cache Chandan Babu R
2022-10-04 10:28 ` [PATCH 5.4 CANDIDATE 04/11] xfs: fix s_maxbytes computation on 32-bit kernels Chandan Babu R
2022-10-04 10:28 ` Chandan Babu R [this message]
2022-10-04 10:28 ` [PATCH 5.4 CANDIDATE 06/11] xfs: refactor remote attr value buffer invalidation Chandan Babu R
2022-10-04 10:28 ` [PATCH 5.4 CANDIDATE 07/11] xfs: fix memory corruption during " Chandan Babu R
2022-10-04 10:28 ` [PATCH 5.4 CANDIDATE 08/11] xfs: move incore structures out of xfs_da_format.h Chandan Babu R
2022-10-04 10:28 ` [PATCH 5.4 CANDIDATE 09/11] xfs: streamline xfs_attr3_leaf_inactive Chandan Babu R
2022-10-04 10:28 ` [PATCH 5.4 CANDIDATE 10/11] xfs: fix uninitialized variable in xfs_attr3_leaf_inactive Chandan Babu R
2022-10-04 10:28 ` [PATCH 5.4 CANDIDATE 11/11] xfs: remove unused variable 'done' Chandan Babu R
2022-10-04 15:49 ` [PATCH 5.4 CANDIDATE 00/11] xfs stable candidate patches for 5.4.y (from v5.6) Darrick J. Wong
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