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Shutemov" To: Alex Shi Cc: akpm@linux-foundation.org, mgorman@techsingularity.net, tj@kernel.org, hughd@google.com, khlebnikov@yandex-team.ru, daniel.m.jordan@oracle.com, yang.shi@linux.alibaba.com, willy@infradead.org, hannes@cmpxchg.org, lkp@intel.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, shakeelb@google.com, iamjoonsoo.kim@lge.com, richard.weiyang@gmail.com, Mika =?utf-8?B?UGVudHRpbMOk?= Subject: Re: [PATCH v16 14/22] mm/thp: add tail pages into lru anyway in split_huge_page() Message-ID: <20200720084931.jusstogio6j74uhs@box> References: <1594429136-20002-1-git-send-email-alex.shi@linux.alibaba.com> <1594429136-20002-15-git-send-email-alex.shi@linux.alibaba.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Queue-Id: 5A939183C8AA0 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam03 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 Fri, Jul 17, 2020 at 05:30:27PM +0800, Alex Shi wrote: > > Add a VM_WARN_ON for tracking. and updated comments for the code. > > Thanks > > --- > From f1381a1547625a6521777bf9235823d8fbd00dac Mon Sep 17 00:00:00 2001 > From: Alex Shi > Date: Fri, 10 Jul 2020 16:54:37 +0800 > Subject: [PATCH v16 14/22] mm/thp: add tail pages into lru anyway in > split_huge_page() > MIME-Version: 1.0 > Content-Type: text/plain; charset=UTF-8 > Content-Transfer-Encoding: 8bit > > Split_huge_page() must start with PageLRU(head), and we are holding the > lru_lock here. If the head was cleared lru bit unexpected, tracking it. > > Signed-off-by: Alex Shi Reviewed-by: Kirill A. Shutemov -- Kirill A. Shutemov