diff options
| author | Mark-PK Tsai <[email protected]> | 2023-10-06 14:02:40 +0800 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2023-10-18 14:34:16 -0700 |
| commit | afb2d666d0250e707eef3c5947165b414268244b (patch) | |
| tree | 09fe3515599f80dcef702dc4aae55d0ee5a5bcf1 | |
| parent | bafd7e9d353ea091958d0dc702390add34b480e9 (diff) | |
zsmalloc: use copy_page for full page copy
Some architectures have implemented optimized copy_page for full page
copying, such as arm.
On my arm platform, use the copy_page helper for single page copying is
about 10 percent faster than memcpy.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Mark-PK Tsai <[email protected]>
Reviewed-by: Sergey Senozhatsky <[email protected]>
Cc: AngeloGioacchino Del Regno <[email protected]>
Cc: Matthias Brugger <[email protected]>
Cc: Minchan Kim <[email protected]>
Cc: YJ Chiang <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
| -rw-r--r-- | mm/zsmalloc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c index c743ce7a5f49..b1c0dad7f4cf 100644 --- a/mm/zsmalloc.c +++ b/mm/zsmalloc.c @@ -1839,7 +1839,7 @@ static int zs_page_migrate(struct page *newpage, struct page *page, * Here, any user cannot access all objects in the zspage so let's move. */ d_addr = kmap_atomic(newpage); - memcpy(d_addr, s_addr, PAGE_SIZE); + copy_page(d_addr, s_addr); kunmap_atomic(d_addr); for (addr = s_addr + offset; addr < s_addr + PAGE_SIZE; |