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zram: use copy_page for full page copy

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Some architectures, such as arm, have implemented optimized copy_page for
full page copying.

Replace the full page memcpy with copy_page to take advantage of the
optimization.

Link: https://lkml.kernel.org/r/20231007070554.8657-1-mark-pk.tsai@mediatek.com
Signed-off-by: Mark-PK Tsai <mark-pk.tsai@mediatek.com>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: YJ Chiang <yj.chiang@mediatek.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Mark-PK Tsai 2023-10-07 15:05:53 +08:00 • committed by Ksawlii
parent 33247c3931
commit 8ddfc9be05
1 changed files with 1 additions and 1 deletions
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2
drivers/block/zram/zram_drv.c
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@ -2957,7 +2957,7 @@ static int __zram_bvec_read(struct zram *zram, struct page *page, u32 index,
src = zs_map_object(zram->mem_pool, handle, ZS_MM_RO); src = zs_map_object(zram->mem_pool, handle, ZS_MM_RO);
if (size == PAGE_SIZE) { if (size == PAGE_SIZE) {
dst = kmap_atomic(page); dst = kmap_atomic(page);
memcpy(dst, src, PAGE_SIZE); copy_page(dst, src);
kunmap_atomic(dst); kunmap_atomic(dst);
ret = 0; ret = 0;
} else { } else {