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Thu, 2 Jul 2026 15:29:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783006184; bh=AmvNH9wwHqyoIMesePnV6/zMDBtlSz51dFh4yHJ1BTo=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=EZDY+QGcsghhDIw9rxbIhnPAJRijthrModhJ3dAoSN5cVM+YkTpcpEvD+KPlh/M/u Qwt3kZkRl2OzXpZ8lNBF20cEMvcQmjr2C3N0OBOmi3krbMnyRHMJTEBJXrtiCGLkys hVceGk9nKeLivyWhhq1nb1heVf5ntbaXnUG4S4OpDlt89/1RU+lLBy/OziQBm1WY0f mLETtt6Kv1hVTKJQz++mgHlN+PUF+ac9yH5QtMrmNRfTW7GoeSyD7Rts3hi3Don33s UtJfTmtwGOSlfBDJEzVdm8IjgP96nHmx5GxFIPDKfkfCebxxa9UBrNHRuHW+T6BGzw FkrA9PbgKP9aQ== Date: Thu, 2 Jul 2026 16:29:20 +0100 From: Lorenzo Stoakes To: Lance Yang Cc: akpm@linux-foundation.org, tsbogend@alpha.franken.de, maddy@linux.ibm.com, mpe@ellerman.id.au, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, l.stach@pengutronix.de, inki.dae@samsung.com, sw0312.kim@samsung.com, kyungmin.park@samsung.com, krzk@kernel.org, peter.griffin@linaro.org, jani.nikula@linux.intel.com, joonas.lahtinen@linux.intel.com, rodrigo.vivi@intel.com, tursulin@ursulin.net, robin.clark@oss.qualcomm.com, lumag@kernel.org, lyude@redhat.com, dakr@kernel.org, tomi.valkeinen@ideasonboard.com, hjc@rock-chips.com, heiko@sntech.de, andy.yan@rock-chips.com, thierry.reding@kernel.org, mperttunen@nvidia.com, jonathanh@nvidia.com, kraxel@redhat.com, dmitry.osipenko@collabora.com, zack.rusin@broadcom.com, matthew.brost@intel.com, thomas.hellstrom@linux.intel.com, oleksandr_andrushchenko@epam.com, deller@gmx.de, bcrl@kvack.org, viro@zeniv.linux.org.uk, brauner@kernel.org, muchun.song@linux.dev, osalvador@suse.de, david@kernel.org, ziy@nvidia.com, baolin.wang@linux.alibaba.com, liam@infradead.org, npache@redhat.com, ryan.roberts@arm.com, dev.jain@arm.com, baohua@kernel.org, hughd@google.com, vbabka@kernel.org, rppt@kernel.org, surenb@google.com, mhocko@suse.com, jannh@google.com, pfalcato@suse.de, kees@kernel.org, perex@perex.cz, tiwai@suse.com, linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, dri-devel@lists.freedesktop.org, etnaviv@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, intel-gfx@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, nouveau@lists.freedesktop.org, linux-rockchip@lists.infradead.org, linux-tegra@vger.kernel.org, virtualization@lists.linux.dev, intel-xe@lists.freedesktop.org, xen-devel@lists.xenproject.org, linux-fbdev@vger.kernel.org, linux-aio@kvack.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-sound@vger.kernel.org Subject: Re: [PATCH 06/13] mm/vma: convert vm_pgprot_modify() to use vma_flags_t and rename Message-ID: References: <548ba81b2971734d4d2143237ad1465bd1b2f525.1782760670.git.ljs@kernel.org> <20260702122116.65642-1-lance.yang@linux.dev> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260702122116.65642-1-lance.yang@linux.dev> On Thu, Jul 02, 2026 at 08:21:16PM +0800, Lance Yang wrote: > > On Mon, Jun 29, 2026 at 08:25:29PM +0100, Lorenzo Stoakes wrote: > >Update vm_pgprot_modify() to use the new VMA flags type vma_flags_t, and > >rename to vma_pgprot_modify() accordingly. > > > >This is part of the ongoing work to convert vm_flags_t to vma_flags_t, in > >order to eliminate the arbitrary limit of the number of bits in a system > >word on available VMA flags. > > > >Update VMA userland tests accordingly, updating vma_set_page_prot() to no > >longer inline vma_pgprot_modify(), rather we can simply define > >vma_pgprot_modify() as a static inline function and the tests will pick it > >up from vma.h. > > > >No functional change intended. > > > >Signed-off-by: Lorenzo Stoakes > >--- > [...] > >diff --git a/mm/vma.h b/mm/vma.h > >index bcf0c2773449..6a8abb8ae937 100644 > >--- a/mm/vma.h > >+++ b/mm/vma.h > >@@ -522,9 +522,11 @@ static inline bool vma_wants_manual_pte_write_upgrade(struct vm_area_struct *vma > > } > > > > #ifdef CONFIG_MMU > >-static inline pgprot_t vm_pgprot_modify(pgprot_t oldprot, vm_flags_t vm_flags) > >+static inline pgprot_t vma_pgprot_modify(pgprot_t oldprot, vma_flags_t vma_flags) > > { > >- return pgprot_modify(oldprot, vm_get_page_prot(vm_flags)); > >+ const pgprot_t prot = vma_get_page_prot(vma_flags); > >+ > >+ return pgprot_modify(oldprot, prot); > > Nit: could this just stay as a single return? something like: > > return pgprot_modify(oldprot, vma_get_page_prot(vma_flags)); I feel it's a bit clearer this way, separating out the two, I know it's a super tiny difference but anyway :P > > Otherwise, LGTM, feel free to add: > > Reviewed-by: Lance Yang Thanks! > > [...] Cheers, Lorenzo