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Howlett" , Linus Torvalds , linux-arm-kernel@axis.com, linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linux-ide@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mips@vger.kernel.org, linux-mmc@vger.kernel.org, linux-mm@kvack.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, Marco Elver , Marek Szyprowski , Michal Hocko , Mike Rapoport , Muchun Song , netdev@vger.kernel.org, Oscar Salvador , Peter Xu , Robin Murphy , Suren Baghdasaryan , Tejun Heo , virtualization@lists.linux.dev, Vlastimil Babka , wireguard@lists.zx2c4.com, x86@kernel.org, Zi Yan Subject: Re: [PATCH v1 20/36] mips: mm: convert __flush_dcache_pages() to __flush_dcache_folio_pages() Message-ID: References: <20250827220141.262669-1-david@redhat.com> <20250827220141.262669-21-david@redhat.com> <2be7db96-2fa2-4348-837e-648124bd604f@redhat.com> <549a60a6-25e2-48d5-b442-49404a857014@lucifer.local> Content-Type: text/plain; charset=us-ascii 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+0200, David Hildenbrand wrote: > On 29.08.25 14:51, Lorenzo Stoakes wrote: > > On Thu, Aug 28, 2025 at 10:51:46PM +0200, David Hildenbrand wrote: > > > On 28.08.25 18:57, Lorenzo Stoakes wrote: > > > > On Thu, Aug 28, 2025 at 12:01:24AM +0200, David Hildenbrand wrote: > > > > > Let's make it clearer that we are operating within a single folio by > > > > > providing both the folio and the page. > > > > > > > > > > This implies that for flush_dcache_folio() we'll now avoid one more > > > > > page->folio lookup, and that we can safely drop the "nth_page" usage. > > > > > > > > > > Cc: Thomas Bogendoerfer > > > > > Signed-off-by: David Hildenbrand > > > > > --- > > > > > arch/mips/include/asm/cacheflush.h | 11 +++++++---- > > > > > arch/mips/mm/cache.c | 8 ++++---- > > > > > 2 files changed, 11 insertions(+), 8 deletions(-) > > > > > > > > > > diff --git a/arch/mips/include/asm/cacheflush.h b/arch/mips/include/asm/cacheflush.h > > > > > index 5d283ef89d90d..8d79bfc687d21 100644 > > > > > --- a/arch/mips/include/asm/cacheflush.h > > > > > +++ b/arch/mips/include/asm/cacheflush.h > > > > > @@ -50,13 +50,14 @@ extern void (*flush_cache_mm)(struct mm_struct *mm); > > > > > extern void (*flush_cache_range)(struct vm_area_struct *vma, > > > > > unsigned long start, unsigned long end); > > > > > extern void (*flush_cache_page)(struct vm_area_struct *vma, unsigned long page, unsigned long pfn); > > > > > -extern void __flush_dcache_pages(struct page *page, unsigned int nr); > > > > > +extern void __flush_dcache_folio_pages(struct folio *folio, struct page *page, unsigned int nr); > > > > > > > > NIT: Be good to drop the extern. > > > > > > I think I'll leave the one in, though, someone should clean up all of them > > > in one go. > > > > This is how we always clean these up though, buuut to be fair that's in mm. > > > > Well, okay, I'll make all the other functions jealous and blame it on you! > :P ;) > > -- > Cheers > > David / dhildenb >