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[173.79.60.52]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-51caaf621e6sm23894971cf.24.2026.07.10.14.21.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 10 Jul 2026 14:21:01 -0700 (PDT) Date: Fri, 10 Jul 2026 17:20:56 -0400 From: Gregory Price To: Lorenzo Stoakes Cc: Andrew Morton , David Hildenbrand , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Rik van Riel , Harry Yoo , Jann Horn , Lance Yang , Pedro Falcato , Russell King , Dinh Nguyen , Simon Schuster , "James E.J. Bottomley" , Helge Deller , Alexander Viro , Christian Brauner , Jan Kara , Dan Williams , Matthew Wilcox , Muchun Song , Oscar Salvador , Masami Hiramatsu , Oleg Nesterov , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , x86@kernel.org, "H. Peter Anvin" , Ian Abbott , H Hartley Sweeten , Lucas Stach , Christian Gmeiner , David Airlie , Simona Vetter , Patrik Jakobsson , Paolo Bonzini , Shakeel Butt , Usama Arif , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-parisc@vger.kernel.org, linux-fsdevel@vger.kernel.org, nvdimm@lists.linux.dev, linux-perf-users@vger.kernel.org, linux-trace-kernel@vger.kernel.org, damon@lists.linux.dev, iommu@lists.linux.dev, kasan-dev@googlegroups.com, linux-sgx@vger.kernel.org, etnaviv@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, linux-tegra@vger.kernel.org, kvm@vger.kernel.org, Russell King Subject: Re: [PATCH v2 26/33] mm/vma: update vma_shrink() to not pass start, pgoff parameters Message-ID: References: <20260710-b4-pre-scalable-cow-v2-0-2a5aa403d977@kernel.org> <20260710-b4-pre-scalable-cow-v2-26-2a5aa403d977@kernel.org> Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260710-b4-pre-scalable-cow-v2-26-2a5aa403d977@kernel.org> On Fri, Jul 10, 2026 at 09:17:07PM +0100, Lorenzo Stoakes wrote: > vma_shrink() is only used by relocate_vma_down() to shrink the tail of a > VMA. Therefore neither the start nor the pgoff parameters make any sense. > > It seemed we were passing the pgoff parameter solely to satisfy > vma_set_range()'s requirement for pgoff being specified. > > Since vma_set_range() is now isolated to vma.c, we can simply introduce > __vma_set_range() which sets only vma->vm_[start, end], and invoke this > instead, removing start and pgoff from vma_shrink() altogether. > > No functional change intended. > > Reviewed-by: Pedro Falcato > Signed-off-by: Lorenzo Stoakes Carry over from v1 Reviewed-by: Gregory Price