+ mm-zsmallocc-convert-to-use-kmem_cache_zalloc-in-cache_alloc_zspage.patch added to -mm tree

+ mm-zsmallocc-convert-to-use-kmem_cache_zalloc-in-cache_alloc_zspage.patch added to -mm tree

[akpm]

The patch titled
     Subject: mm/zsmalloc.c: convert to use kmem_cache_zalloc in cache_alloc_zspage()
has been added to the -mm tree.  Its filename is
     mm-zsmallocc-convert-to-use-kmem_cache_zalloc-in-cache_alloc_zspage.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/mm-zsmallocc-convert-to-use-kmem_cache_zalloc-in-cache_alloc_zspage.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/mm-zsmallocc-convert-to-use-kmem_cache_zalloc-in-cache_alloc_zspage.patch

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------------------------------------------------------
From: Miaohe Lin <linmiaohe@huawei.com>
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/20210114120032.25885-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

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

--- 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);
 
_

Patches currently in -mm which might be from linmiaohe@huawei.com are

mm-hugetlb-fix-potential-double-free-in-hugetlb_register_node-error-path.patch
mm-hugetlb-avoid-unnecessary-hugetlb_acct_memory-call.patch
mm-compaction-remove-duplicated-vm_bug_on_page-pagelocked.patch
mm-zsmallocc-convert-to-use-kmem_cache_zalloc-in-cache_alloc_zspage.patch