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Message-ID: <3f20b8d258d4eb72e1eadd5926d892bc61f0e0d4.1734407924.git-series.apopple@nvidia.com> Date: Tue, 17 Dec 2024 16:12:52 +1100 From: Alistair Popple <apopple@...dia.com> To: akpm@...ux-foundation.org, dan.j.williams@...el.com, linux-mm@...ck.org Cc: Alistair Popple <apopple@...dia.com>, lina@...hilina.net, zhang.lyra@...il.com, gerald.schaefer@...ux.ibm.com, vishal.l.verma@...el.com, dave.jiang@...el.com, logang@...tatee.com, bhelgaas@...gle.com, jack@...e.cz, jgg@...pe.ca, catalin.marinas@....com, will@...nel.org, mpe@...erman.id.au, npiggin@...il.com, dave.hansen@...ux.intel.com, ira.weiny@...el.com, willy@...radead.org, djwong@...nel.org, tytso@....edu, linmiaohe@...wei.com, david@...hat.com, peterx@...hat.com, linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linuxppc-dev@...ts.ozlabs.org, nvdimm@...ts.linux.dev, linux-cxl@...r.kernel.org, linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org, linux-xfs@...r.kernel.org, jhubbard@...dia.com, hch@....de, david@...morbit.com, Jason Gunthorpe <jgg@...dia.com> Subject: [PATCH v4 09/25] mm/gup.c: Remove redundant check for PCI P2PDMA page PCI P2PDMA pages are not mapped with pXX_devmap PTEs therefore the check in __gup_device_huge() is redundant. Remove it Signed-off-by: Alistair Popple <apopple@...dia.com> Reviewed-by: Jason Gunthorpe <jgg@...dia.com> Reviewed-by: Dan Wiliams <dan.j.williams@...el.com> Acked-by: David Hildenbrand <david@...hat.com> --- mm/gup.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/mm/gup.c b/mm/gup.c index 2304175..9b587b5 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -3016,11 +3016,6 @@ static int gup_fast_devmap_leaf(unsigned long pfn, unsigned long addr, break; } - if (!(flags & FOLL_PCI_P2PDMA) && is_pci_p2pdma_page(page)) { - gup_fast_undo_dev_pagemap(nr, nr_start, flags, pages); - break; - } - folio = try_grab_folio_fast(page, 1, flags); if (!folio) { gup_fast_undo_dev_pagemap(nr, nr_start, flags, pages); -- git-series 0.9.1
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