From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id DF72321314743 for ; Fri, 9 Aug 2019 16:01:26 -0700 (PDT) From: ira.weiny@intel.com Subject: [RFC PATCH v2 03/19] mm/gup: Pass flags down to __gup_device_huge* calls Date: Fri, 9 Aug 2019 15:58:17 -0700 Message-Id: <20190809225833.6657-4-ira.weiny@intel.com> In-Reply-To: <20190809225833.6657-1-ira.weiny@intel.com> References: <20190809225833.6657-1-ira.weiny@intel.com> MIME-Version: 1.0 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" To: Andrew Morton Cc: Michal Hocko , Jan Kara , linux-nvdimm@lists.01.org, linux-rdma@vger.kernel.org, John Hubbard , Dave Chinner , linux-kernel@vger.kernel.org, Matthew Wilcox , linux-xfs@vger.kernel.org, Jason Gunthorpe , linux-fsdevel@vger.kernel.org, Theodore Ts'o , linux-ext4@vger.kernel.org, linux-mm@kvack.org List-ID: From: Ira Weiny In order to support checking for a layout lease on a FS DAX inode these calls need to know if FOLL_LONGTERM was specified. Signed-off-by: Ira Weiny --- mm/gup.c | 26 +++++++++++++++++--------- 1 file changed, 17 insertions(+), 9 deletions(-) diff --git a/mm/gup.c b/mm/gup.c index b6a293bf1267..80423779a50a 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -1881,7 +1881,8 @@ static int gup_pte_range(pmd_t pmd, unsigned long addr, unsigned long end, #if defined(CONFIG_ARCH_HAS_PTE_DEVMAP) && defined(CONFIG_TRANSPARENT_HUGEPAGE) static int __gup_device_huge(unsigned long pfn, unsigned long addr, - unsigned long end, struct page **pages, int *nr) + unsigned long end, struct page **pages, int *nr, + unsigned int flags) { int nr_start = *nr; struct dev_pagemap *pgmap = NULL; @@ -1907,30 +1908,33 @@ static int __gup_device_huge(unsigned long pfn, unsigned long addr, } static int __gup_device_huge_pmd(pmd_t orig, pmd_t *pmdp, unsigned long addr, - unsigned long end, struct page **pages, int *nr) + unsigned long end, struct page **pages, int *nr, + unsigned int flags) { unsigned long fault_pfn; int nr_start = *nr; fault_pfn = pmd_pfn(orig) + ((addr & ~PMD_MASK) >> PAGE_SHIFT); - if (!__gup_device_huge(fault_pfn, addr, end, pages, nr)) + if (!__gup_device_huge(fault_pfn, addr, end, pages, nr, flags)) return 0; if (unlikely(pmd_val(orig) != pmd_val(*pmdp))) { undo_dev_pagemap(nr, nr_start, pages); return 0; } + return 1; } static int __gup_device_huge_pud(pud_t orig, pud_t *pudp, unsigned long addr, - unsigned long end, struct page **pages, int *nr) + unsigned long end, struct page **pages, int *nr, + unsigned int flags) { unsigned long fault_pfn; int nr_start = *nr; fault_pfn = pud_pfn(orig) + ((addr & ~PUD_MASK) >> PAGE_SHIFT); - if (!__gup_device_huge(fault_pfn, addr, end, pages, nr)) + if (!__gup_device_huge(fault_pfn, addr, end, pages, nr, flags)) return 0; if (unlikely(pud_val(orig) != pud_val(*pudp))) { @@ -1941,14 +1945,16 @@ static int __gup_device_huge_pud(pud_t orig, pud_t *pudp, unsigned long addr, } #else static int __gup_device_huge_pmd(pmd_t orig, pmd_t *pmdp, unsigned long addr, - unsigned long end, struct page **pages, int *nr) + unsigned long end, struct page **pages, int *nr, + unsigned int flags) { BUILD_BUG(); return 0; } static int __gup_device_huge_pud(pud_t pud, pud_t *pudp, unsigned long addr, - unsigned long end, struct page **pages, int *nr) + unsigned long end, struct page **pages, int *nr, + unsigned int flags) { BUILD_BUG(); return 0; @@ -2051,7 +2057,8 @@ static int gup_huge_pmd(pmd_t orig, pmd_t *pmdp, unsigned long addr, if (pmd_devmap(orig)) { if (unlikely(flags & FOLL_LONGTERM)) return 0; - return __gup_device_huge_pmd(orig, pmdp, addr, end, pages, nr); + return __gup_device_huge_pmd(orig, pmdp, addr, end, pages, nr, + flags); } refs = 0; @@ -2092,7 +2099,8 @@ static int gup_huge_pud(pud_t orig, pud_t *pudp, unsigned long addr, if (pud_devmap(orig)) { if (unlikely(flags & FOLL_LONGTERM)) return 0; - return __gup_device_huge_pud(orig, pudp, addr, end, pages, nr); + return __gup_device_huge_pud(orig, pudp, addr, end, pages, nr, + flags); } refs = 0; -- 2.20.1 _______________________________________________ Linux-nvdimm mailing list Linux-nvdimm@lists.01.org https://lists.01.org/mailman/listinfo/linux-nvdimm