+ zsmalloc-remove-null-check-from-destroy_handle_cache.patch added to -mm tree

+ zsmalloc-remove-null-check-from-destroy_handle_cache.patch added to -mm tree

[akpm]

The patch titled
     Subject: zsmalloc: remove null check from destroy_handle_cache()
has been added to the -mm tree.  Its filename is
     zsmalloc-remove-null-check-from-destroy_handle_cache.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/zsmalloc-remove-null-check-from-destroy_handle_cache.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/zsmalloc-remove-null-check-from-destroy_handle_cache.patch

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------------------------------------------------------
From: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Subject: zsmalloc: remove null check from destroy_handle_cache()

We can pass a NULL cache pointer to kmem_cache_destroy(), because it
NULL-checks its argument now.  Remove redundant test from
destroy_handle_cache().

Signed-off-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(-)

diff -puN mm/zsmalloc.c~zsmalloc-remove-null-check-from-destroy_handle_cache mm/zsmalloc.c
--- a/mm/zsmalloc.c~zsmalloc-remove-null-check-from-destroy_handle_cache
+++ a/mm/zsmalloc.c
@@ -288,8 +288,7 @@ static int create_handle_cache(struct zs
 
 static void destroy_handle_cache(struct zs_pool *pool)
 {
-	if (pool->handle_cachep)
-		kmem_cache_destroy(pool->handle_cachep);
+	kmem_cache_destroy(pool->handle_cachep);
 }
 
 static unsigned long alloc_handle(struct zs_pool *pool)
_

Patches currently in -mm which might be from sergey.senozhatsky@gmail.com are

mm-slab_common-allow-null-cache-pointer-in-kmem_cache_destroy.patch
mm-mempool-allow-null-pool-pointer-in-mempool_destroy.patch
mm-dmapool-allow-null-pool-pointer-in-dma_pool_destroy.patch
zsmalloc-drop-unused-variable-nr_to_migrate.patch
zsmalloc-always-keep-per-class-stats.patch
zsmalloc-introduce-zs_can_compact-function.patch
zsmalloc-cosmetic-compaction-code-adjustments.patch
zsmalloc-zram-introduce-zs_pool_stats-api.patch
zsmalloc-account-the-number-of-compacted-pages.patch
zsmalloc-use-shrinker-to-trigger-auto-compaction.patch
zsmalloc-partial-page-ordering-within-a-fullness_list.patch
zsmalloc-consider-zs_almost_full-as-migrate-source.patch
zsmalloc-use-class-pages_per_zspage.patch
zsmalloc-do-not-take-class-lock-in-zs_shrinker_count.patch
zsmalloc-remove-null-check-from-destroy_handle_cache.patch
checkpatch-add-some-foo_destroy-functions-to-needless_if-tests.patch