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Howlett" , Suren Baghdasaryan , Vlastimil Babka , pedro.falcato@gmail.com, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org, Oliver Sang , John Hubbard , Tejun Heo , Johannes Weiner , Michal Koutny , Andrew Morton , Shakeel Butt Subject: Re: [PATCH v7 0/6] introduce PIDFD_SELF* sentinels Date: Tue, 4 Feb 2025 10:46:35 +0100 Message-ID: <20250204-joggen-buddeln-29e5ca75abb7@brauner> X-Mailer: git-send-email 2.47.2 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" X-Developer-Signature: v=1; a=openpgp-sha256; l=1795; i=brauner@kernel.org; h=from:subject:message-id; bh=jb8kMwJ98DjWaCHgudb7JkXH1w0Cj8Tj6R51vZ/JS1M=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMaQvfPTgTD7L0pub5DJF0/Jkm1bfN599J+JSe+g99xMrf HIyLtUv7ihlYRDjYpAVU2RxaDcJl1vOU7HZKFMDZg4rE8gQBi5OAZhIVgYjw4fPN5iqNJV9OgsW svEXbPTITfBe7sAUZj2X8f5jmdCifwz/o9w3l/I+kFzBJnLz6KVvxzkSSuumWL9meHP5ZfeNjvN nuAE= X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Queue-Id: 6CDAF1C000A X-Rspamd-Server: rspam10 X-Stat-Signature: wzt54u4khdmoaasd5ck99brxw7fp1knq X-HE-Tag: 1738662639-16540 X-HE-Meta: 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 5xekzWSa FUGrFHNWHb3zZi4jWBzu/Rj1NE9dqWoeiGePsmVO3dqjNiBPRkYM1qV6Mdha0rADvwHllZAc9gA4ytV7JtMIfVqjES7daVh2lmsW3C/eb3us69aLMLipNUlu8ggbCcuxXge4e8ma+McwaV1o3B/wN2aGoTryHysx0ULmBHq4ss2AbreZiS/CneUt+HQHW5wVEJFtVdinLHy0odYHCn3EZBcaeF+H3WAl6slpQSIOX6lVTbYbow8xTGNZJGvImleJL0QWbJHgpK7DNFW/FthkxXsc/EjFf5+iB8skCHFO5oZKhtCjOUml7COUHXbs94kMqPHuxu5wzhyYK3GREh5NRjuUk3mDL/SAM21/2FMYa92SvlsMUyPQV48886WSzB9r3/nvKdXlH3LGY7UC0U7bsQBLNSOe8b9Cks0br X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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