linux-kernel - Re: [PATCH v7 0/6] introduce PIDFD

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Message-ID: <20250204-joggen-buddeln-29e5ca75abb7@brauner>
Date: Tue,  4 Feb 2025 10:46:35 +0100
From: Christian Brauner <brauner@...nel.org>
To: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
Cc: Christian Brauner <brauner@...nel.org>,
	Shuah Khan <shuah@...nel.org>,
	"Liam R . Howlett" <Liam.Howlett@...cle.com>,
	Suren Baghdasaryan <surenb@...gle.com>,
	Vlastimil Babka <vbabka@...e.cz>,
	pedro.falcato@...il.com,
	linux-kselftest@...r.kernel.org,
	linux-mm@...ck.org,
	linux-fsdevel@...r.kernel.org,
	linux-api@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Oliver Sang <oliver.sang@...el.com>,
	John Hubbard <jhubbard@...dia.com>,
	Tejun Heo <tj@...nel.org>,
	Johannes Weiner <hannes@...xchg.org>,
	Michal Koutny <mkoutny@...e.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Shakeel Butt <shakeel.butt@...ux.dev>
Subject: Re: [PATCH v7 0/6] introduce PIDFD_SELF* sentinels

On Thu, 30 Jan 2025 20:40:25 +0000, Lorenzo Stoakes wrote:
> If you wish to utilise a pidfd interface to refer to the current process or
> thread it is rather cumbersome, requiring something like:
> 
> 	int pidfd = pidfd_open(getpid(), 0 or PIDFD_THREAD);
> 
> 	...
> 
> [...]

Updated merge message. I've slightly rearranged pidfd_send_signal() so
we don't have to call CLASS(fd, f)(pidfd) unconditionally anymore.

---

Applied to the vfs-6.15.pidfs branch of the vfs/vfs.git tree.
Patches in the vfs-6.15.pidfs branch should appear in linux-next soon.

Please report any outstanding bugs that were missed during review in a
new review to the original patch series allowing us to drop it.

It's encouraged to provide Acked-bys and Reviewed-bys even though the
patch has now been applied. If possible patch trailers will be updated.

Note that commit hashes shown below are subject to change due to rebase,
trailer updates or similar. If in doubt, please check the listed branch.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git
branch: vfs-6.15.pidfs

[1/6] pidfd: add PIDFD_SELF* sentinels to refer to own thread/process
      https://git.kernel.org/vfs/vfs/c/e6e4ed42f8d8
[2/6] selftests/pidfd: add missing system header imcludes to pidfd tests
      https://git.kernel.org/vfs/vfs/c/c9f04f4a251d
[3/6] tools: testing: separate out wait_for_pid() into helper header
      https://git.kernel.org/vfs/vfs/c/fb67fe44116e
[4/6] selftests: pidfd: add pidfd.h UAPI wrapper
      https://git.kernel.org/vfs/vfs/c/ac331e56724d
[5/6] selftests: pidfd: add tests for PIDFD_SELF_*
      https://git.kernel.org/vfs/vfs/c/881a3515c191
[6/6] selftests/mm: use PIDFD_SELF in guard pages test
      https://git.kernel.org/vfs/vfs/c/b4703f056f42