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Received: from willy by casper.infradead.org with local (Exim 4.97.1 #2 (Red Hat Linux)) id 1scVsF-0000000B6dr-34eA; Fri, 09 Aug 2024 20:06:07 +0000 Date: Fri, 9 Aug 2024 21:06:07 +0100 From: Matthew Wilcox To: Shakeel Butt Cc: Andrew Morton , Johannes Weiner , Michal Hocko , Roman Gushchin , Muchun Song , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Meta kernel team , cgroups@vger.kernel.org Subject: Re: [PATCH] memcg: replace memcg ID idr with xarray Message-ID: References: <20240809172618.2946790-1-shakeel.butt@linux.dev> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240809172618.2946790-1-shakeel.butt@linux.dev> X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: B7D7B10001A X-Stat-Signature: imfq3893z8p5fgxxj8omjnwzd7x4hp1u X-Rspam-User: X-HE-Tag: 1723233974-978786 X-HE-Meta: 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 3WxagIGD W/1DY0xAw4UJGkxJdzCrRDTOfF44Y2nl1Bnod4XiqELBGGVtqCr5B9vQg/yJUyOAOe0UAfZxD/NcuQiXCbFVJhFKSBWYklA/Jf4l2bMtG0G5e18AHSPglAr1jTxJSqMopG/bvho3xu7ptHL2xIjlBsPkJxxl1gANDzCo/FTkpbYFjKpF2dmyN8++5Nf8cHid45uHUM6cZ1gQX+qDgFpxRdskylWGlwLrUgUa7MbNM1YQZ3TJgmnGXqBgz4SHfP1n/S8nB0gXcb3Uq/Kg= 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 Fri, Aug 09, 2024 at 10:26:18AM -0700, Shakeel Butt wrote: > At the moment memcg IDs are managed through IDR which requires external > synchronization mechanisms and makes the allocation code a bit awkward. > Let's switch to xarray and make the code simpler. > > Suggested-by: Matthew Wilcox > Signed-off-by: Shakeel Butt Looks great. Reviewed-by: Matthew Wilcox (Oracle)