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Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Maarten Lankhorst , Maxime Ripard , Natalie Vock , Tejun Heo , =?utf-8?q?Michal_Koutn=C3=BD?= , Oscar Salvador , Jingxiang Zeng Cc: Michal Hocko , cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linuszeng X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1788947061; l=1664; i=linuszeng@tencent.com; s=20260909; h=from:subject:message-id; bh=Ty2hOT3RbwUGz3En7B5H9g1JCCLU1A+cfCkKn52iXOE=; b=DabIe6gyrzCaIlUMZ+sK5yF+k8V1AXEAlJEyfeNhNSOm4taa8h7olgRc3rZRs1NDNlh3wZvec 6uuVi36nj8mDzWloXIy3VsJaBD8D3LXRVtrsGSlLIRQ9LQUXjqdvkPm X-Developer-Key: i=linuszeng@tencent.com; a=ed25519; pk=6K54xRzYIRWqatrAPy86M4E0MsI92BVJBhXwz5NdC74= X-Endpoint-Received: by B4 Relay for linuszeng@tencent.com/20260909 with auth_id=1017 X-Original-From: linuszeng Reply-To: linuszeng@tencent.com X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 8B393120008 X-Stat-Signature: 7fuft3peyiafc4w5nd9g6izxe6n96wka X-Rspam-User: X-HE-Tag: 1788947063-899277 X-HE-Meta: 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 EeQXsYTC 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: linuszeng The protection state now lives in struct page_counter_protection, so remove the emin/min_usage/children_min_usage, elow/low_usage/ children_low_usage, min, low and protection_support fields from struct page_counter. Also drop the now-orphaned _pad2_ padding and its comment: with the protection fields gone it no longer separates the read-mostly fields from anything, and the structure's cacheline alignment already pads the tail out. swap/memsw, kmem, tcpmem and hugetlb counters no longer carry this unused state: on 64-bit the structure shrinks from three cache lines to two, saving one cache line. --- include/linux/page_counter.h | 16 ---------------- 1 file changed, 16 deletions(-) diff --git a/include/linux/page_counter.h b/include/linux/page_counter.h index b81f16702764..0007960ba5a4 100644 --- a/include/linux/page_counter.h +++ b/include/linux/page_counter.h @@ -43,27 +43,11 @@ struct page_counter { CACHELINE_PADDING(_pad1_); - /* effective memory.min and memory.min usage tracking */ - unsigned long emin; - atomic_long_t min_usage; - atomic_long_t children_min_usage; - - /* effective memory.low and memory.low usage tracking */ - unsigned long elow; - atomic_long_t low_usage; - atomic_long_t children_low_usage; - unsigned long watermark; /* Latest cg2 reset watermark */ unsigned long local_watermark; - /* Keep all the read most fields in a separete cacheline. */ - CACHELINE_PADDING(_pad2_); - - bool protection_support; bool track_failcnt; - unsigned long min; - unsigned long low; unsigned long high; unsigned long max; struct page_counter *parent; -- 2.43.7