From: Christoph Hellwig <[email protected]>
To: Alexander Viro <[email protected]>
Cc: [email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected]
Subject: [PATCH 03/12] pidfd: use __anon_inode_getfd
Date: Fri, 8 May 2020 17:36:25 +0200 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
Use __anon_inode_getfd instead of opencoding the logic using
get_unused_fd_flags + anon_inode_getfile.
Signed-off-by: Christoph Hellwig <[email protected]>
---
kernel/fork.c | 12 ++----------
1 file changed, 2 insertions(+), 10 deletions(-)
diff --git a/kernel/fork.c b/kernel/fork.c
index 4385f3d639f23..31e0face01072 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -2113,19 +2113,11 @@ static __latent_entropy struct task_struct *copy_process(
* if the fd table isn't shared).
*/
if (clone_flags & CLONE_PIDFD) {
- retval = get_unused_fd_flags(O_RDWR | O_CLOEXEC);
+ retval = __anon_inode_getfd("[pidfd]", &pidfd_fops, pid,
+ O_RDWR | O_CLOEXEC, &pidfile);
if (retval < 0)
goto bad_fork_free_pid;
-
pidfd = retval;
-
- pidfile = anon_inode_getfile("[pidfd]", &pidfd_fops, pid,
- O_RDWR | O_CLOEXEC);
- if (IS_ERR(pidfile)) {
- put_unused_fd(pidfd);
- retval = PTR_ERR(pidfile);
- goto bad_fork_free_pid;
- }
get_pid(pid); /* held by pidfile now */
retval = put_user(pidfd, args->pidfd);
--
2.26.2
next prev parent reply other threads:[~2020-05-08 15:36 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-08 15:36 Add a __anon_inode_getfd helper Christoph Hellwig
2020-05-08 15:36 ` [PATCH 01/12] fd: add a new " Christoph Hellwig
2020-05-08 15:36 ` [PATCH 02/12] kvm: use __anon_inode_getfd Christoph Hellwig
2020-05-08 15:36 ` Christoph Hellwig [this message]
2020-05-08 15:36 ` [PATCH 04/12] bpf: " Christoph Hellwig
2020-05-08 17:32 ` Andrii Nakryiko
2020-05-08 15:36 ` [PATCH 05/12] io_uring: " Christoph Hellwig
2020-05-08 15:36 ` [PATCH 06/12] eventpoll: " Christoph Hellwig
2020-05-08 15:36 ` [PATCH 07/12] eventfd: " Christoph Hellwig
2020-05-08 15:36 ` [PATCH 08/12] vfio: " Christoph Hellwig
2020-05-08 15:55 ` Alex Williamson
2020-05-08 15:36 ` [PATCH 09/12] rdma: " Christoph Hellwig
2020-05-08 19:52 ` Jason Gunthorpe
2020-05-08 15:36 ` [PATCH 10/12] drm_syncobj: " Christoph Hellwig
2020-05-08 15:36 ` [PATCH 11/12] gpiolib: " Christoph Hellwig
2020-05-08 15:36 ` [PATCH 12/12] vtpm_proxy: " Christoph Hellwig
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