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[71.234.172.214]) by smtp.gmail.com with ESMTPSA id s64-v6sm5443004qkl.85.2018.05.18.00.50.12 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 18 May 2018 00:50:13 -0700 (PDT) From: Kent Overstreet To: linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-mm@kvack.org, Jens Axboe , Ingo Molnar Cc: Kent Overstreet Subject: [PATCH 07/10] block: Add missing flush_dcache_page() call Date: Fri, 18 May 2018 03:49:12 -0400 Message-Id: <20180518074918.13816-15-kent.overstreet@gmail.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180518074918.13816-1-kent.overstreet@gmail.com> References: <20180518074918.13816-1-kent.overstreet@gmail.com> 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 Since a bio can point to userspace pages (e.g. direct IO), this is generally necessary. Signed-off-by: Kent Overstreet --- block/bio.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/block/bio.c b/block/bio.c index c58544d4bc..ce8e259f9a 100644 --- a/block/bio.c +++ b/block/bio.c @@ -994,6 +994,8 @@ void bio_copy_data_iter(struct bio *dst, struct bvec_iter *dst_iter, kunmap_atomic(dst_p); kunmap_atomic(src_p); + flush_dcache_page(dst_bv.bv_page); + bio_advance_iter(src, src_iter, bytes); bio_advance_iter(dst, dst_iter, bytes); }