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aio: use credential guards

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Use credential guards for scoped credential override with automatic
restoration on scope exit.

Link: https://patch.msgid.link/20251103-work-creds-guards-simple-v1-2-a3e156839e7f@kernel.org
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christian Brauner
2025-11-03 12:26:50 +01:00
parent 019e52e8d3
commit 84c1a329b4
1 changed files with 3 additions and 3 deletions
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6
fs/aio.c
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@@ -1640,10 +1640,10 @@ static int aio_write(struct kiocb *req, const struct iocb *iocb,
static void aio_fsync_work(struct work_struct *work)
{
struct aio_kiocb *iocb = container_of(work, struct aio_kiocb, fsync.work);
const struct cred *old_cred = override_creds(iocb->fsync.creds);
iocb->ki_res.res = vfs_fsync(iocb->fsync.file, iocb->fsync.datasync);
revert_creds(old_cred);
scoped_with_creds(iocb->fsync.creds)
iocb->ki_res.res = vfs_fsync(iocb->fsync.file, iocb->fsync.datasync);
put_cred(iocb->fsync.creds);
iocb_put(iocb);
}