From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4BB7AC433F5 for ; Fri, 21 Jan 2022 12:25:36 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id BD5EA6B007D; Fri, 21 Jan 2022 07:25:35 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id B859C6B007E; Fri, 21 Jan 2022 07:25:35 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A4E1C6B0080; Fri, 21 Jan 2022 07:25:35 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0169.hostedemail.com [216.40.44.169]) by kanga.kvack.org (Postfix) with ESMTP id 91B996B007D for ; Fri, 21 Jan 2022 07:25:35 -0500 (EST) Received: from smtpin28.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 47A4E94FB3 for ; Fri, 21 Jan 2022 12:25:35 +0000 (UTC) X-FDA: 79054215030.28.175A062 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by imf02.hostedemail.com (Postfix) with ESMTP id AC5D680011 for ; Fri, 21 Jan 2022 12:25:34 +0000 (UTC) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 0C0741F3B3; Fri, 21 Jan 2022 12:25:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1642767933; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Qi64l3IAyreUc9ddomTJuBidsfPFiRVH3au7bwbpnfk=; b=VJ8ouMu56IZoHNE8pKKg1hAHYrBqyMAJ5mB2P946dTs56fZswgMLTLxKH72CZ/TTziQ//M 6CmEMuVZpZ0V56Qvg3QLTWox8QUnyvojcS4c/ns38t+vM5N1xiktAeum4UUHg+LfNpSzm+ 0m+fCUqMxfd7MW4D6pMCfbEG0XpbyT8= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1642767933; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Qi64l3IAyreUc9ddomTJuBidsfPFiRVH3au7bwbpnfk=; b=HZJvR/eCNX7MmCdXysH4m31qJPJRyfJhDCovHT6DoWus4tXgb/MQjSO3UF0PDEsRN3ymW5 mYvjS2DaQEVAWiCA== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id B610A13BC9; Fri, 21 Jan 2022 12:25:32 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id BFnPKzym6mE5KwAAMHmgww (envelope-from ); Fri, 21 Jan 2022 12:25:32 +0000 Message-ID: <7ab0a82e-206f-24c8-c00b-d5bf8c48ae7f@suse.cz> Date: Fri, 21 Jan 2022 13:25:32 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.5.0 Subject: Re: [PATCH v4 44/66] ipc/shm: Use VMA iterator instead of linked list Content-Language: en-US To: Liam Howlett , "maple-tree@lists.infradead.org" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , Andrew Morton Cc: Song Liu , Davidlohr Bueso , "Paul E . McKenney" , Matthew Wilcox , Laurent Dufour , David Rientjes , Axel Rasmussen , Suren Baghdasaryan , Rik van Riel , Peter Zijlstra , Michel Lespinasse , Jerome Glisse , Minchan Kim , Joel Fernandes , Rom Lemarchand References: <20211201142918.921493-1-Liam.Howlett@oracle.com> <20211201142918.921493-45-Liam.Howlett@oracle.com> From: Vlastimil Babka In-Reply-To: <20211201142918.921493-45-Liam.Howlett@oracle.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: AC5D680011 X-Stat-Signature: wyn5xmmesh5qyxq3k87zdba4i8mxfsnu Authentication-Results: imf02.hostedemail.com; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=VJ8ouMu5; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b="HZJvR/eC"; spf=pass (imf02.hostedemail.com: domain of vbabka@suse.cz designates 195.135.220.29 as permitted sender) smtp.mailfrom=vbabka@suse.cz; dmarc=none X-HE-Tag: 1642767934-976265 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 12/1/21 15:30, Liam Howlett wrote: > From: "Liam R. Howlett" > > The VMA iterator is faster than the linked llist, and it can be walked > even when VMAs are being removed from the address space, so there's no > need to keep track of 'next'. > > Signed-off-by: Matthew Wilcox (Oracle) > Signed-off-by: Liam R. Howlett Acked-by: Vlastimil Babka