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[188.141.3.169]) by smtp.gmail.com with ESMTPSA id u18-20020a05600c211200b003dc4fd6e624sm5364696wml.19.2023.02.21.09.20.10 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 21 Feb 2023 09:20:10 -0800 (PST) Message-ID: <78dfd8ec-967e-2bd2-9b8c-b7338ed62049@linaro.org> Date: Tue, 21 Feb 2023 17:20:10 +0000 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.7.0 Subject: Re: [PATCH] dmapool: push new blocks in ascending order Content-Language: en-US To: Keith Busch , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Keith Busch References: <20230221165400.1595247-1-kbusch@meta.com> From: Bryan O'Donoghue In-Reply-To: <20230221165400.1595247-1-kbusch@meta.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: D66BB40012 X-Rspamd-Server: rspam09 X-Rspam-User: X-Stat-Signature: 3u5neu17pfeui9mm9n5qsys9dightroj X-HE-Tag: 1677000012-918124 X-HE-Meta: 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 21citTWq jaUJal2L8Oe9dU107TlYU5EzGJlJC+vNoy3CXTlZtUXs8yXlFSX8BeefVelhtU1iqObQ5r5d3kmx3YtnE1HLFmISv+nVz1FPHiyBKBWKgiNsQVCkdTQBVLeqRbwkCOnrRmIjfOrbJa9I9fC2wIJzAcYaJ8x8Ni9N3mxTty04jTdrHkBggvo/ZPVP7841+Hz0anYyzgSlHv1cq0C4kr6jYsAjW06MwBkFVeApSlYFXDSfIbEvj4h9uaXPCp7tkkbUj49iA8UFrLW/ylMkGxqGQ1m+8U1n8YFTEtKtRYxV3htKkwhF2b4jbxW6rbtmRuOBgYxylmM5GhI662D8ia2H547aEAQ9zowB1/ONR1+6ro6ovtobiJR9h8i8PUKSHHZnzuzSPzEco69mMQYV/dWX8JYqsQcxjxXQtXDZn0aiFug4lVhP+JsiDZtNVKfOjypwP8JNACfNwa+ulISctfPbhjgnfJ8SVkLWqUpmz X-Bogosity: Ham, tests=bogofilter, spamicity=0.000349, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 21/02/2023 16:54, Keith Busch wrote: > From: Keith Busch > > Some users of the dmapool need their allocations to happen in ascending > order. The recent optimizations pushed the blocks in reverse order, so > restore the previous behavior by linking the next available block from > low-to-high. > > Fixes: ced6d06a81fb69 ("dmapool: link blocks across pages") > Reported-by: Bryan O'Donoghue > Signed-off-by: Keith Busch Tested-by: Bryan O'Donoghue