From patchwork Sun Feb 27 12:07:44 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shiyang Ruan X-Patchwork-Id: 12761647 Received: from heian.cn.fujitsu.com (mail.cn.fujitsu.com [183.91.158.132]) by smtp.subspace.kernel.org (Postfix) with ESMTP id BC99248B3 for ; Sun, 27 Feb 2022 12:09:07 +0000 (UTC) IronPort-Data: A9a23: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 IronPort-HdrOrdr: A9a23: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 X-IronPort-AV: E=Sophos;i="5.88,333,1635177600"; d="scan'208";a="122037689" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 27 Feb 2022 20:07:58 +0800 Received: from G08CNEXMBPEKD06.g08.fujitsu.local (unknown [10.167.33.206]) by cn.fujitsu.com (Postfix) with ESMTP id 137084D15A5F; Sun, 27 Feb 2022 20:07:52 +0800 (CST) Received: from G08CNEXCHPEKD09.g08.fujitsu.local (10.167.33.85) by G08CNEXMBPEKD06.g08.fujitsu.local (10.167.33.206) with Microsoft SMTP Server (TLS) id 15.0.1497.23; Sun, 27 Feb 2022 20:07:51 +0800 Received: from irides.mr.mr (10.167.225.141) by G08CNEXCHPEKD09.g08.fujitsu.local (10.167.33.209) with Microsoft SMTP Server id 15.0.1497.23 via Frontend Transport; Sun, 27 Feb 2022 20:07:51 +0800 From: Shiyang Ruan To: , , , , CC: , , , , , Christoph Hellwig Subject: [PATCH v11 5/8] mm: move pgoff_address() to vma_pgoff_address() Date: Sun, 27 Feb 2022 20:07:44 +0800 Message-ID: <20220227120747.711169-6-ruansy.fnst@fujitsu.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220227120747.711169-1-ruansy.fnst@fujitsu.com> References: <20220227120747.711169-1-ruansy.fnst@fujitsu.com> Precedence: bulk X-Mailing-List: nvdimm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-yoursite-MailScanner-ID: 137084D15A5F.A523F X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: ruansy.fnst@fujitsu.com X-Spam-Status: No Since it is not a DAX-specific function, move it into mm and rename it to be a generic helper. Signed-off-by: Shiyang Ruan Reviewed-by: Christoph Hellwig Reviewed-by: Dan Williams --- fs/dax.c | 12 +----------- include/linux/mm.h | 13 +++++++++++++ 2 files changed, 14 insertions(+), 11 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index 653a2f390b72..f164cf64c611 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -853,16 +853,6 @@ static void *dax_insert_entry(struct xa_state *xas, return entry; } -static inline -unsigned long pgoff_address(pgoff_t pgoff, struct vm_area_struct *vma) -{ - unsigned long address; - - address = vma->vm_start + ((pgoff - vma->vm_pgoff) << PAGE_SHIFT); - VM_BUG_ON_VMA(address < vma->vm_start || address >= vma->vm_end, vma); - return address; -} - /* Walk all mappings of a given index of a file and writeprotect them */ static void dax_entry_mkclean(struct address_space *mapping, pgoff_t index, unsigned long pfn) @@ -882,7 +872,7 @@ static void dax_entry_mkclean(struct address_space *mapping, pgoff_t index, if (!(vma->vm_flags & VM_SHARED)) continue; - address = pgoff_address(index, vma); + address = vma_pgoff_address(vma, index); /* * follow_invalidate_pte() will use the range to call diff --git a/include/linux/mm.h b/include/linux/mm.h index e1a84b1e6787..9b1d56c5c224 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2816,6 +2816,19 @@ static inline unsigned long vma_pages(struct vm_area_struct *vma) return (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; } +/* + * Get user virtual address at the specific offset within a vma. + */ +static inline unsigned long vma_pgoff_address(struct vm_area_struct *vma, + pgoff_t pgoff) +{ + unsigned long address; + + address = vma->vm_start + ((pgoff - vma->vm_pgoff) << PAGE_SHIFT); + VM_BUG_ON_VMA(address < vma->vm_start || address >= vma->vm_end, vma); + return address; +} + /* Look up the first VMA which exactly match the interval vm_start ... vm_end */ static inline struct vm_area_struct *find_exact_vma(struct mm_struct *mm, unsigned long vm_start, unsigned long vm_end)