AcoSail/kernel_optimize_test
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drbd: use copy_highpage

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Use copy_highpage() to copy from one page to another.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
This commit is contained in:
Akinobu Mita 2012-11-08 16:12:31 -08:00 committed by Philipp Reisner
parent ed635cb067
commit f1d6a328bb
1 changed files with 1 additions and 7 deletions
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8
drivers/block/drbd/drbd_bitmap.c
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@ -1011,17 +1011,11 @@ static void bm_page_io_async(struct bm_aio_ctx *ctx, int page_nr, int rw) __must
bm_set_page_unchanged(b->bm_pages[page_nr]);
if (ctx->flags & BM_AIO_COPY_PAGES) {
void *src, *dest;
page = mempool_alloc(drbd_md_io_page_pool, __GFP_HIGHMEM|__GFP_WAIT);
dest = kmap_atomic(page);
src = kmap_atomic(b->bm_pages[page_nr]);
memcpy(dest, src, PAGE_SIZE);
kunmap_atomic(src);
kunmap_atomic(dest);
copy_highpage(page, b->bm_pages[page_nr]);
bm_store_page_idx(page, page_nr);
} else
page = b->bm_pages[page_nr];
bio->bi_bdev = mdev->ldev->md_bdev;
bio->bi_sector = on_disk_sector;
/* bio_add_page of a single page to an empty bio will always succeed,