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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> MIME-Version: 1.0 Content-Type: text/plain X-yoursite-MailScanner-ID: 137084D15A5F.A523F X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: ruansy.fnst@fujitsu.com X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 9D0F0C0006 X-Stat-Signature: wjq639jhe5yk584eeruocc4yc46arkgc Authentication-Results: imf22.hostedemail.com; dkim=none; spf=none (imf22.hostedemail.com: domain of ruansy.fnst@fujitsu.com has no SPF policy when checking 183.91.158.132) smtp.mailfrom=ruansy.fnst@fujitsu.com; dmarc=fail reason="No valid SPF, No valid DKIM" header.from=fujitsu.com (policy=none) X-HE-Tag: 1645963678-262289 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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; } =20 -static inline -unsigned long pgoff_address(pgoff_t pgoff, struct vm_area_struct *vma) -{ - unsigned long address; - - address =3D vma->vm_start + ((pgoff - vma->vm_pgoff) << PAGE_SHIFT); - VM_BUG_ON_VMA(address < vma->vm_start || address >=3D 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 ind= ex, unsigned long pfn) @@ -882,7 +872,7 @@ static void dax_entry_mkclean(struct address_space *m= apping, pgoff_t index, if (!(vma->vm_flags & VM_SHARED)) continue; =20 - address =3D pgoff_address(index, vma); + address =3D vma_pgoff_address(vma, index); =20 /* * 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_ar= ea_struct *vma) return (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; } =20 +/* + * 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 =3D vma->vm_start + ((pgoff - vma->vm_pgoff) << PAGE_SHIFT); + VM_BUG_ON_VMA(address < vma->vm_start || address >=3D vma->vm_end, vma)= ; + return address; +} + /* Look up the first VMA which exactly match the interval vm_start ... v= m_end */ static inline struct vm_area_struct *find_exact_vma(struct mm_struct *mm= , unsigned long vm_start, unsigned long vm_end) --=20 2.35.1