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Wed, 26 Aug 2020 07:24:29 -0700 (PDT) Date: Wed, 26 Aug 2020 10:23:15 -0400 From: Johannes Weiner To: "Matthew Wilcox (Oracle)" Cc: linux-mm@kvack.org, Andrew Morton , Hugh Dickins , William Kucharski , Jani Nikula , Alexey Dobriyan , Chris Wilson , Matthew Auld , Huang Ying , intel-gfx@lists.freedesktop.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 3/8] mm: Optimise madvise WILLNEED Message-ID: <20200826142315.GB988805@cmpxchg.org> References: <20200819184850.24779-1-willy@infradead.org> <20200819184850.24779-4-willy@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200819184850.24779-4-willy@infradead.org> X-Rspamd-Queue-Id: B63E1180C1491 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 Wed, Aug 19, 2020 at 07:48:45PM +0100, Matthew Wilcox (Oracle) wrote: > Instead of calling find_get_entry() for every page index, use an XArray > iterator to skip over NULL entries, and avoid calling get_page(), > because we only want the swap entries. > > Signed-off-by: Matthew Wilcox (Oracle) Acked-by: Johannes Weiner