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Thu, 14 Aug 2025 12:40:05 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id XslHDiXZnWgbWgAAD6G6ig (envelope-from ); Thu, 14 Aug 2025 12:40:05 +0000 Date: Thu, 14 Aug 2025 13:40:03 +0100 From: Pedro Falcato To: Lorenzo Stoakes Cc: Andrew Morton , "Liam R . Howlett" , Matthew Wilcox , Sidhartha Kumar , Vlastimil Babka , maple-tree@lists.infradead.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] testing/radix-tree/maple: hack around kfree_rcu not existing Message-ID: References: <20250814064927.27345-1-lorenzo.stoakes@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250814064927.27345-1-lorenzo.stoakes@oracle.com> X-Rspamd-Action: no action X-Stat-Signature: 49bug6iwz4zm94hgbxsmg5rscihfuo38 X-Rspam-User: X-Rspamd-Queue-Id: C9B3C40003 X-Rspamd-Server: rspam05 X-HE-Tag: 1755175207-205231 X-HE-Meta: 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 hFc1k68D l6vYpjQJjVYHuiT6BvB4LY+JbkBBNioNQYPjAhF/wueIJK1GxCkSfor3fCDAZaw15WqXVsiacosa6HuglMwTZ9Mj8ryoy0zHafom5Y7iJC6AN4wZNixCG4t1e+Kf4bho/02APMqK9osuvAtDJyza7SQoPIObc03rCf8r3sR7r3fU0IucxhStj7VraWMHOXxhFRjcvfJDvsz5VifcUjiILxKb9fsDG4p9BrtQdGoE5btGSuzcIWc8COV1s3vxFoL9jlsnwGVVxJ5bI88ZlS+kRXPccywvOAzFCWD+oFob5GvSZmW7kbxGOZLBwPH8azAyDoL6b0/JWoaTJejhzjS4z5XLruokGvAeJzQmHBIjGwuCxHdeAbwmVaJpJoS71KWzpaaw24o8DLOXhW21bx6uGZCvpkQ== 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 Thu, Aug 14, 2025 at 07:49:27AM +0100, Lorenzo Stoakes wrote: > From: Pedro Falcato > > liburcu doesn't have kfree_rcu (or anything similar). Despite that, we can > hack around it in a trivial fashion, by adding a wrapper. > > This wrapper only works for maple_nodes, and not anything else (due to us > not being able to know rcu_head offsets in any way), and thus we take > advantage of the type checking to avoid future silent breakage. > > This fixes the build for the VMA userland tests. > > Additionally remove the existing implementation in maple.c, and have > maple.c include the maple-shared.c header. > > Reviewed-by: Sidhartha Kumar > Tested-by: Lorenzo Stoakes > Signed-off-by: Pedro Falcato > Signed-off-by: Lorenzo Stoakes > --- > > Andrew - please attribute this as Pedro's patch (Pedro - please mail to > confirm), as this is simply an updated version of [0], pulled out to fix the > VMA tests which remain broken. > ACK, this is fine. The future of the series is still unclear, so if this fixes the build then all good from my end :) -- Pedro