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| author | Miaohe Lin <linmiaohe@huawei.com> | 2021-06-30 18:52:52 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-30 20:47:31 -0700 |
| commit | ae34af1f11d0a6ae849b7605d15df9798dab7b46 (patch) | |
| tree | fb7b66c2d0f61e59121cbf7609c2f9a6f1251e87 /mm/cma.c | |
| parent | 2c1e9a2c668b4606e9c27fe420ddf83d113928c8 (diff) | |
| download | linux-ae34af1f11d0a6ae849b7605d15df9798dab7b46.tar.bz2 | |
mm/zswap.c: avoid unnecessary copy-in at map time
The buf mapped via zpool_map_handle() is only used to store compressed
page buffer and there is no information to extract from it. So we could
use ZPOOL_MM_WO instead to avoid unnecessary copy-in at map time.
Link: https://lkml.kernel.org/r/20210522092242.3233191-3-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Seth Jennings <sjenning@redhat.com>
Cc: Tian Tao <tiantao6@hisilicon.com>
Cc: Vitaly Wool <vitaly.wool@konsulko.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/cma.c')
0 files changed, 0 insertions, 0 deletions