[049/118] mm/zsmalloc.c: convert to use kmem_cache_zalloc in cache_alloc_zspage()

Commit Message

Andrew Morton Feb. 26, 2021, 1:18 a.m. UTC

From: Miaohe Lin <[e-mail]>
Subject: mm/zsmalloc.c: convert to use kmem_cache_zalloc in cache_alloc_zspage()

We always memset the zspage allocated via cache_alloc_zspage.  So it's
more convenient to use kmem_cache_zalloc in cache_alloc_zspage than caller
do it manually.

Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Miaohe Lin <[e-mail]>
Reviewed-by: Sergey Senozhatsky <[e-mail]>
Cc: Minchan Kim <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
---

 mm/zsmalloc.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Patch

--- a/mm/zsmalloc.c~mm-zsmallocc-convert-to-use-kmem_cache_zalloc-in-cache_alloc_zspage
+++ a/mm/zsmalloc.c
@@ -357,7 +357,7 @@  static void cache_free_handle(struct zs_
 
 static struct zspage *cache_alloc_zspage(struct zs_pool *pool, gfp_t flags)
 {
-	return kmem_cache_alloc(pool->zspage_cachep,
+	return kmem_cache_zalloc(pool->zspage_cachep,
 			flags & ~(__GFP_HIGHMEM|__GFP_MOVABLE));
 }
 
@@ -1064,7 +1064,6 @@  static struct zspage *alloc_zspage(struc
 	if (!zspage)
 		return NULL;
 
-	memset(zspage, 0, sizeof(struct zspage));
 	zspage->magic = ZSPAGE_MAGIC;
 	migrate_lock_init(zspage);