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zram: use memcpy_from_bvec in zram_bvec_write

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Use memcpy_from_bvec instead of open coding the logic.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20220303111905.321089-5-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2022-03-03 14:18:59 +03:00 committed by Jens Axboe
parent b3bd0a8a74
commit bd3d3203eb
1 changed files with 1 additions and 4 deletions
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5
drivers/block/zram/zram_drv.c
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@ -1465,7 +1465,6 @@ static int zram_bvec_write(struct zram *zram, struct bio_vec *bvec,
{
int ret;
struct page *page = NULL;
void *src;
struct bio_vec vec;
vec = *bvec;
@ -1483,11 +1482,9 @@ static int zram_bvec_write(struct zram *zram, struct bio_vec *bvec,
if (ret)
goto out;
src = kmap_atomic(bvec->bv_page);
dst = kmap_atomic(page);
memcpy(dst + offset, src + bvec->bv_offset, bvec->bv_len);
memcpy_from_bvec(dst + offset, bvec);
kunmap_atomic(dst);
kunmap_atomic(src);
vec.bv_page = page;
vec.bv_len = PAGE_SIZE;