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From: Muchun Song In-Reply-To: <20230724094354.90817-33-zhengqi.arch@bytedance.com> Date: Wed, 26 Jul 2023 15:40:52 +0800 Cc: Andrew Morton , david@fromorbit.com, tkhai@ya.ru, Vlastimil Babka , Roman Gushchin , djwong@kernel.org, Christian Brauner , "Paul E. McKenney" , tytso@mit.edu, steven.price@arm.com, cel@kernel.org, senozhatsky@chromium.org, yujie.liu@intel.com, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org, kvm@vger.kernel.org, xen-devel@lists.xenproject.org, linux-erofs@lists.ozlabs.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-nfs@vger.kernel.org, linux-mtd@lists.infradead.org, rcu@vger.kernel.org, netdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, dm-devel@redhat.com, linux-raid@vger.kernel.org, linux-bcache@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-btrfs@vger.kernel.org Content-Transfer-Encoding: 7bit Message-Id: <866DDDA8-3F7E-4E7A-BA8D-D6DA1707E106@linux.dev> References: <20230724094354.90817-1-zhengqi.arch@bytedance.com> <20230724094354.90817-33-zhengqi.arch@bytedance.com> To: Qi Zheng X-Migadu-Flow: FLOW_OUT X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: C5A4D40013 X-Stat-Signature: 4fmag8o8hfcrawg85rb8g7bxx7qiqd7z X-Rspam-User: X-HE-Tag: 1690357302-863889 X-HE-Meta: U2FsdGVkX1/wmkL9KNj/zE7dYefAFVhR9VCMGbp5A3dDbl/ozVfkL2DSWp4HnBGWLTjPm0Bd/sK8+5vajS43A0CWnqlGBn34k5eaUAuUL6uhSyWpnEEsk9l8CsqhEw13hPJDsjfk4xDaryz0QPWHxfk53cZDPzmkEbY1bwNTySlvDPIb/+LZpNvnte1ZtgI5qhT79r9jSqgJdqalWDWZvpYGR+2KGYsoJkfkTykWQsrled/a8E1MjXeGCFEFU4vw/XAL2BWxRJAyH1xDur93i7s8Fo+wBlfr1Ryh92NqFcdRfdeEqUY0rlaPzrAV6ZVEzbcQ8BNqk5G7A0TwgW1Z8geuKatUIuaEi1uSNKoY+Dp7LHEetew3/UKLNtyEVmUay19VkEEpOoIrHE5f2m4H/wNZ4xYUjh+zMMnRcL+CeeAUT5NlEZw3ckeCKSesgveqpfoL6YJKwZFwxV2N4s0kvuxnNsiwgUX2KxbAGKfCNo287rM0bWufU7rLnBPpQHZeQkJ1rJvOStBSVNqymL4F7bvP7I4oH7hbck/oWgjK7kCshqK1fsleiZKZ4tpJ71ReuUjhR5JSfMp0w1OetvhaNEs1pPbsgF1LyfdO047yvzozown2e0gqreOawxdkM0jxkA2GGHbCmXAEIuGh9igBoA+ftsK+nOTMMhrnQ7p/vH6C5JKBJpHQFhkplnF6o139Jwt91BfCZA8SzZFwf9HMtmz5/ALo5UxaVMCMceu03Rwd2puqTT+TjPVWMtWt//OEobQcJrb5eJqljRPr0rXk8Eu5MsxOmwmWgeFB649dvRcQINUNG/rFCfqBnPM1i31+drmaYEegx4mUxXD/1zLdKSFaCWxpMQK9aBRW5K1Lw5KKibtYBK6SdRcD8G5CGm4pUghlc3k6aozRaWVA6gL6Jnj6NU1wDmMIxqnaOauUycjobzopRGt8sMryce+zd4MbzX8KOev98Ach2PQsNki iX9nXfe3 JC707Nold+PMcmKv7ICbbvdYxO6n+bGRxXoHKLaaI32+EXJhNzzvxvC836V/QnD06OWk82ysQIKZR9+WDJNURSxDb6/kHVQjBkx+Ssc/J7skfQ8fabKjCROhqZVFw4ieCRIKraomGM2beSV0jXEVr9Rbvh4pdNc/9Z7gNvaRK0b4CA2FMmsuBaGvHjnCDquwtvHnJx1KNe//X0Hm4SNv2R/Idf8EdUvpvGeab0HfKTZ7vU+DJvibGpAnrWkFcthEECxtkvXR7I5Kk7h+xT1IIdxMKMyjK5nSkJXGQbTJjD/LGnKM= 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: > On Jul 24, 2023, at 17:43, Qi Zheng wrote: > > In preparation for implementing lockless slab shrink, use new APIs to > dynamically allocate the ext4-es shrinker, so that it can be freed > asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU > read-side critical section when releasing the struct ext4_sb_info. > > Signed-off-by: Qi Zheng Reviewed-by: Muchun Song