From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9494536B for ; Wed, 3 Sep 2025 01:31:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756863064; cv=none; b=uQdESNQiMxeIrMQdAzSj4LxEbine9PJJ2xiDr5nW8xuoe4TymFZeOzv0lyUikpzztrMjh9/70nwdkrSUXL79k3rc7Xa9xgR7MfIJ9vYkPxYBkfn4qoe02Us+WPTTMq5DtLey0aj24xD1dE2TLfy6TwIdsRsbeuuVJADfzD/FcYw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756863064; c=relaxed/simple; bh=kqYf/4DtmRggyCL5vvRGSjcy7p5hV4/sZ1rl1iXDH6k=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=j3zudNmPptvg9XS2Nx1m3rTnpzWXOCAyWANSLzgCW2ZNxpqCbINC7HEETMApyiapo6zC+/167XBp5AMOtW6u8mcGvZXTzzc8su+igyDUC8quXQTNZmdaK924RLpicNjEeH4IK3ozrlNPEwW7NVMRPu8owaNjdkxFbOOhcH7b5Us= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ph0ZExWO; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ph0ZExWO" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E58D8C4CEED; Wed, 3 Sep 2025 01:31:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1756863064; bh=kqYf/4DtmRggyCL5vvRGSjcy7p5hV4/sZ1rl1iXDH6k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ph0ZExWOTBSSmdRfB4nmMhQhpcprkugPz/3bDYGAsmJlDy/PRZCLfFe4VWhx8UcxK GvxTS2gTgHt8ho4jjnQBpzPHuy8cKx+bXFnjPwq2x/KVW4W8VleFoKZZVbpOJDeYmZ X02vYw4zs7CnPVub1abgfNYQFzxZ21DKLEVxtzXqwVyu2ridEC87Zi8fKV5PdqicZM WUK/GQH+5IW6Z7ZCIVBoiG1t5Vu//ll0qvnjvGgcTac4EumsDOGn8MWGTdUfQKzXjH lrceChUUKZhRSYVUXIYGQ3VRp6Z93MZweRgm7Jb0Zvysbzuxy3hjs3gOqUcc9ZY+TA uxjPGStPBlnnw== From: SeongJae Park To: Thadeu Lima de Souza Cascardo Cc: SeongJae Park , Andrew Morton , Vlastimil Babka , Suren Baghdasaryan , Michal Hocko , Brendan Jackman , Johannes Weiner , Zi Yan , Minchan Kim , Sergey Senozhatsky , Yosry Ahmed , Nhat Pham , Chengming Zhou , Lorenzo Stoakes , linux-mm@kvack.org, linux-kernel@vger.kernel.org, kernel-dev@igalia.com Subject: Re: [PATCH v2] mm: show_mem: show number of zspages in show_free_areas Date: Tue, 2 Sep 2025 18:31:00 -0700 Message-Id: <20250903013100.190488-1-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250902-show_mem_zspages-v2-1-545daaa8b410@igalia.com> References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Tue, 2 Sep 2025 09:49:21 -0300 Thadeu Lima de Souza Cascardo wrote: > When OOM is triggered, it will show where the pages might be for each zone. > When using zram or zswap, it might look like lots of pages are missing. > After this patch, zspages are shown as below. > > [ 48.792859] Node 0 DMA free:2812kB boost:0kB min:60kB low:72kB high:84kB reserved_highatomic:0KB free_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB zspages:11160kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB > [ 48.792962] lowmem_reserve[]: 0 956 956 956 956 > [ 48.792988] Node 0 DMA32 free:3512kB boost:0kB min:3912kB low:4888kB high:5864kB reserved_highatomic:0KB free_highatomic:0KB active_anon:0kB inactive_anon:28kB active_file:8kB inactive_file:16kB unevictable:0kB writepending:0kB zspages:916780kB present:1032064kB managed:978944kB mlocked:0kB bounce:0kB free_pcp:500kB local_pcp:248kB free_cma:0kB > [ 48.793118] lowmem_reserve[]: 0 0 0 0 0 > > Signed-off-by: Thadeu Lima de Souza Cascardo Acked-by: SeongJae Park Thanks, SJ [...]