tree 3f9939616307862f3b4b1ac1633d67c9498fcec4
parent 27c88694ed224472e5466b601d9ea9bfff890183
author Amir Goldstein <amir73il@gmail.com> 1692281613 +0300
committer Arnav Kansal <rnv@google.com> 1736220524 -0800

fs: create kiocb_{start,end}_write() helpers

[ Upstream commit ed0360bbab72b829437b67ebb2f9cfac19f59dfe ]

aio, io_uring, cachefiles and overlayfs, all open code an ugly variant
of file_{start,end}_write() to silence lockdep warnings.

Create helpers for this lockdep dance so we can use the helpers in all
the callers.

BUG=b/380569262
TEST=presubmit
RELEASE_NOTE=Fixed CVE-2024-53052 in the Linux kernel.

Change-Id: I57eb9323c07a027f65c77c874978c554b84f8955
cos-patch: security-moderate
Signed-off-by: Arnav Kansal <rnv@google.com>
Suggested-by: Jan Kara <jack@suse.cz>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Message-Id: <20230817141337.1025891-4-amir73il@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Stable-dep-of: 1d60d74e8526 ("io_uring/rw: fix missing NOWAIT check for O_DIRECT start write")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/89664
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Kevin Berry <kpberry@google.com>