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[2607:7c80:54:e::133]) by mx.google.com with ESMTPS id g67-v6si19562442pfe.4.2018.05.23.07.45.02 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 23 May 2018 07:45:02 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of batv+df5a2477ff0fa86e9985+5386+infradead.org+hch@bombadil.srs.infradead.org designates 2607:7c80:54:e::133 as permitted sender) client-ip=2607:7c80:54:e::133; Authentication-Results: mx.google.com; dkim=pass header.i=@infradead.org header.s=bombadil.20170209 header.b=TVcunxnT; spf=pass (google.com: best guess record for domain of batv+df5a2477ff0fa86e9985+5386+infradead.org+hch@bombadil.srs.infradead.org designates 2607:7c80:54:e::133 as permitted sender) smtp.mailfrom=BATV+df5a2477ff0fa86e9985+5386+infradead.org+hch@bombadil.srs.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=eMAldgieaTfmuyiT4prrdJxDyFkWwZT9XIapZ/7tnbY=; b=TVcunxnTniOluIh/Zd/9Amlu7 hOhcrYaZR8GHD6ccnuIVxLCfSDxFUZqJOL2E9ZgXFrM7+6c7kSC1b62fFYtZeaRFdTU62VO/krGat LBvj2u9H6ciN0wnayNeSYY8ERJwfCYTGXueo49EVUx6cnaOvPvGwaGqHywY9eGV8WVH18B2v7oJSn kBwvbpeVLrS8IF7L/nfnPdYNMZmDmD/5gS6JPcV0FcbGzFYbvf1B4o+Wxw44CtRZXP7G/28O5UIgX 4G91hpV9YeZwAYEPyBYN8U7jqfIUKq35B4SVoH9h20ymP3H0nqr3C57Qgfh0FZabnmwYUPDUBbF3Y A4wINp3MQ==; Received: from 089144199016.atnat0008.highway.a1.net ([89.144.199.16] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1fLV0a-0000UL-2l; Wed, 23 May 2018 14:44:56 +0000 From: Christoph Hellwig To: linux-xfs@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 18/34] xfs: use iomap for blocksize == PAGE_SIZE readpage and readpages Date: Wed, 23 May 2018 16:43:41 +0200 Message-Id: <20180523144357.18985-19-hch@lst.de> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180523144357.18985-1-hch@lst.de> References: <20180523144357.18985-1-hch@lst.de> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html 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: X-Virus-Scanned: ClamAV using ClamSMTP For file systems with a block size that equals the page size we never do partial reads, so we can use the buffer_head-less iomap versions of readpage and readpages without conflicting with the buffer_head structures create later in write_begin. Signed-off-by: Christoph Hellwig Reviewed-by: Darrick J. Wong --- fs/xfs/xfs_aops.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 56e405572909..c631c457b444 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -1402,6 +1402,8 @@ xfs_vm_readpage( struct page *page) { trace_xfs_vm_readpage(page->mapping->host, 1); + if (i_blocksize(page->mapping->host) == PAGE_SIZE) + return iomap_readpage(page, &xfs_iomap_ops); return mpage_readpage(page, xfs_get_blocks); } @@ -1413,6 +1415,8 @@ xfs_vm_readpages( unsigned nr_pages) { trace_xfs_vm_readpages(mapping->host, nr_pages); + if (i_blocksize(mapping->host) == PAGE_SIZE) + return iomap_readpages(mapping, pages, nr_pages, &xfs_iomap_ops); return mpage_readpages(mapping, pages, nr_pages, xfs_get_blocks); }