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bugzilla-daemon@kernel.org, Baoquan He , Nhat Pham , Yosry Ahmed , linux-mm@kvack.org Message-ID: <8b4bdcfa-ce3f-4e23-839f-31367df7c18f@gmx.de> In-Reply-To: References: <20260206121151.dea3633d1f0ded7bbf49c22e@linux-foundation.org> Subject: Re: [Bug 221055] New: Hibernate image write 10x slower since commit 0ff67f990bd4 ("mm, swap: remove swap slot cache") MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-Correlation-ID: <8b4bdcfa-ce3f-4e23-839f-31367df7c18f@gmx.de> X-Provags-ID: V03:K1:EJ8/HEb+jIL9AcOR0z/xLsuSx2lRvztUaYnSdE/gfxrp/amZcUB wJzdT6LS+qHElNRoTPXJLSUKljumqxBdVziApyQi591A+XhyywUaSaeVXb/GpNlH3m/ARwH VKIBjYK6ipfAd66dL1T0Rh/GsxGcwwR71JuN4c3+TnUxbriztBDu6ScljWNOg6Mqce2HBzP sVR2aXEYvY68s7O0lFo1A== UI-OutboundReport: notjunk:1;M01:P0:3mWSmue9ICY=;qKJhrYMyiCoNPrdjPH6TpMIcXzP JW/hiu0/ZaZ25+Ac9+gDWeWekEpt/qL25fAhQY0Q9dR8ko6vNOdVAsTSupWR8+6HQJX11CTtB 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 WUUmrmwX 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I'll also try some other SSD=20 >> later >> maybe that's only reproducible with SSD that have very poor 4K=20 >> performance. > I'll try out your patch over the weekend. I tested your patch with the current HEAD from git.kernel.org. The first=20 run is with your patch, the second without: Date:=C2=A0=C2=A0=C2=A0=C2=A0 2026-02-15 08:29:33 Commit:=C2=A0=C2=A0 770aaedb461a (Merge tag 'bootconfig-v7.0' of=20 git://git.kernel.or) Kernel:=C2=A0=C2=A0 6.19.0-20260214-153617-09922-g770aaedb461a-dirty Duration: 35 Sekunden Result:=C2=A0=C2=A0 good ---------------------------------------- Date:=C2=A0=C2=A0=C2=A0=C2=A0 2026-02-15 09:01:25 Commit:=C2=A0=C2=A0 770aaedb461a (Merge tag 'bootconfig-v7.0' of=20 git://git.kernel.or) Kernel:=C2=A0=C2=A0 6.19.0-20260215-083120-09922-g770aaedb461a Duration: 324 Sekunden Result:=C2=A0=C2=A0 bad With your patch, hibernation is fast again. It solves the problem I=20 reported. Thank you very much for taking care of my annoying problem. Regards, Carsten