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Message-Id: <20230827132835.1373581-10-hao.xu@linux.dev>
Date: Sun, 27 Aug 2023 21:28:33 +0800
From: Hao Xu <hao.xu@...ux.dev>
To: io-uring@...r.kernel.org, Jens Axboe <axboe@...nel.dk>
Cc: Dominique Martinet <asmadeus@...ewreck.org>,
Pavel Begunkov <asml.silence@...il.com>,
Christian Brauner <brauner@...nel.org>,
Alexander Viro <viro@...iv.linux.org.uk>,
Stefan Roesch <shr@...com>, Clay Harris <bugs@...ycon.org>,
Dave Chinner <david@...morbit.com>,
"Darrick J . Wong" <djwong@...nel.org>,
linux-fsdevel@...r.kernel.org, linux-xfs@...r.kernel.org,
linux-ext4@...r.kernel.org, linux-cachefs@...hat.com,
ecryptfs@...r.kernel.org, linux-nfs@...r.kernel.org,
linux-unionfs@...r.kernel.org, bpf@...r.kernel.org,
netdev@...r.kernel.org, linux-s390@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
linux-btrfs@...r.kernel.org, codalist@...a.cs.cmu.edu,
linux-f2fs-devel@...ts.sourceforge.net, cluster-devel@...hat.com,
linux-mm@...ck.org, linux-nilfs@...r.kernel.org,
devel@...ts.orangefs.org, linux-cifs@...r.kernel.org,
samba-technical@...ts.samba.org, linux-mtd@...ts.infradead.org,
Wanpeng Li <wanpengli@...cent.com>
Subject: [PATCH 09/11] vfs: error out -EAGAIN if atime needs to be updated
From: Hao Xu <howeyxu@...cent.com>
To enforce nowait semantics, error out -EAGAIN if atime needs to be
updated.
Signed-off-by: Hao Xu <howeyxu@...cent.com>
---
fs/inode.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/fs/inode.c b/fs/inode.c
index e83b836f2d09..32d81be65cf9 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -1970,6 +1970,9 @@ int touch_atime(const struct path *path, bool nowait)
if (!atime_needs_update(path, inode))
return 0;
+ if (nowait)
+ return -EAGAIN;
+
if (!sb_start_write_trylock(inode->i_sb))
return 0;
--
2.25.1
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