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07 Feb 2021 11:05:01 -0800 From: Chaitanya Kulkarni To: linux-block@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org Cc: axboe@kernel.dk, tytso@mit.edu, adilger.kernel@dilger.ca, jaegeuk@kernel.org, chao@kernel.org, johannes.thumshirn@wdc.com, damien.lemoal@wdc.com, bvanassche@acm.org, chaitanya.kulkarni@wdc.com, dongli.zhang@oracle.com, clm@fb.com, ira.weiny@intel.com, dsterba@suse.com, ebiggers@kernel.org, hch@infradead.org, dave.hansen@intel.com Subject: [RFC PATCH 3/8] null_blk: use memcpy_page() in copy_to_nullb() Date: Sun, 7 Feb 2021 11:04:20 -0800 Message-Id: <20210207190425.38107-4-chaitanya.kulkarni@wdc.com> X-Mailer: git-send-email 2.22.1 In-Reply-To: <20210207190425.38107-1-chaitanya.kulkarni@wdc.com> References: <20210207190425.38107-1-chaitanya.kulkarni@wdc.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org Signed-off-by: Chaitanya Kulkarni --- drivers/block/null_blk/main.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c index d6c821d48090..c9b6db82b07c 100644 --- a/drivers/block/null_blk/main.c +++ b/drivers/block/null_blk/main.c @@ -1010,7 +1010,6 @@ static int copy_to_nullb(struct nullb *nullb, struct page *source, size_t temp, count = 0; unsigned int offset; struct nullb_page *t_page; - void *dst, *src; while (count < n) { temp = min_t(size_t, nullb->dev->blocksize, n - count); @@ -1024,11 +1023,7 @@ static int copy_to_nullb(struct nullb *nullb, struct page *source, if (!t_page) return -ENOSPC; - src = kmap_atomic(source); - dst = kmap_atomic(t_page->page); - memcpy(dst + offset, src + off + count, temp); - kunmap_atomic(dst); - kunmap_atomic(src); + memcpy_page(t_page->page, offset, source, off + count, temp); __set_bit(sector & SECTOR_MASK, t_page->bitmap);