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Wong" Cc: linux-xfs@vger.kernel.org Subject: Re: [RFC] xfs_io: Add cachestat syscall support In-Reply-To: <20250403022829.GA6283@frogsfrogsfrogs> Date: Thu, 03 Apr 2025 16:14:56 +0530 Message-ID: <87v7rl34nr.fsf@gmail.com> References: <20250403022829.GA6283@frogsfrogsfrogs> Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: "Darrick J. Wong" writes: > On Mon, Mar 17, 2025 at 12:15:29AM +0530, Ritesh Harjani (IBM) wrote: >> This adds -c "cachestat off len" command which uses cachestat() syscall >> [1]. This can provide following pagecache detail for a file. >> >> - no. of cached pages, >> - no. of dirty pages, >> - no. of pages marked for writeback, >> - no. of evicted pages, >> - no. of recently evicted pages >> >> [1]: https://lore.kernel.org/all/20230503013608.2431726-3-nphamcs@gmail.com/T/#u >> >> Signed-off-by: Ritesh Harjani (IBM) > > Just out of curiosity, is there a manpage change for xfs_io.8 that goes > with this new subcommand? > Looks like I might have missed the man page entry change,... >> --- >> configure.ac | 1 + >> include/builddefs.in | 1 + >> io/Makefile | 5 +++ >> io/cachestat.c | 77 +++++++++++++++++++++++++++++++++++++++++++ >> io/init.c | 1 + >> io/io.h | 6 ++++ >> m4/package_libcdev.m4 | 19 +++++++++++ >> 7 files changed, 110 insertions(+) >> create mode 100644 io/cachestat.c ...else we would have seen an entry in man/man8/xfs_io.8 file. Since this is taken in for-next, I can submit a separate patch for the man page entry update. Thanks for catching it. -ritesh