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md: drop null test before destroy functions

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Remove unneeded NULL test.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@ expression x; @@
-if (x != NULL)
  \(kmem_cache_destroy\|mempool_destroy\|dma_pool_destroy\)(x);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: NeilBrown <neilb@suse.com>
This commit is contained in:
Julia Lawall 2015-09-13 14:15:10 +02:00 committed by NeilBrown
parent d4929add83
commit 644df1a85f
4 changed files with 7 additions and 14 deletions
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3
drivers/md/multipath.c
View File

@ -470,8 +470,7 @@ static int multipath_run (struct mddev *mddev)
return 0;
out_free_conf:
if (conf->pool)
mempool_destroy(conf->pool);
mempool_destroy(conf->pool);
kfree(conf->multipaths);
kfree(conf);
mddev->private = NULL;

6
drivers/md/raid1.c
View File

@ -2843,8 +2843,7 @@ static struct r1conf *setup_conf(struct mddev *mddev)
abort:
if (conf) {
if (conf->r1bio_pool)
mempool_destroy(conf->r1bio_pool);
mempool_destroy(conf->r1bio_pool);
kfree(conf->mirrors);
safe_put_page(conf->tmppage);
kfree(conf->poolinfo);
@ -2946,8 +2945,7 @@ static void raid1_free(struct mddev *mddev, void *priv)
{
struct r1conf *conf = priv;
if (conf->r1bio_pool)
mempool_destroy(conf->r1bio_pool);
mempool_destroy(conf->r1bio_pool);
kfree(conf->mirrors);
safe_put_page(conf->tmppage);
kfree(conf->poolinfo);

9
drivers/md/raid10.c
View File

@ -3486,8 +3486,7 @@ static struct r10conf *setup_conf(struct mddev *mddev)
printk(KERN_ERR "md/raid10:%s: couldn't allocate memory.\n",
mdname(mddev));
if (conf) {
if (conf->r10bio_pool)
mempool_destroy(conf->r10bio_pool);
mempool_destroy(conf->r10bio_pool);
kfree(conf->mirrors);
safe_put_page(conf->tmppage);
kfree(conf);
@ -3682,8 +3681,7 @@ static int run(struct mddev *mddev)
out_free_conf:
md_unregister_thread(&mddev->thread);
if (conf->r10bio_pool)
mempool_destroy(conf->r10bio_pool);
mempool_destroy(conf->r10bio_pool);
safe_put_page(conf->tmppage);
kfree(conf->mirrors);
kfree(conf);
@ -3696,8 +3694,7 @@ static void raid10_free(struct mddev *mddev, void *priv)
{
struct r10conf *conf = priv;
if (conf->r10bio_pool)
mempool_destroy(conf->r10bio_pool);
mempool_destroy(conf->r10bio_pool);
safe_put_page(conf->tmppage);
kfree(conf->mirrors);
kfree(conf->mirrors_old);

3
drivers/md/raid5.c
View File

@ -2271,8 +2271,7 @@ static void shrink_stripes(struct r5conf *conf)
drop_one_stripe(conf))
;
if (conf->slab_cache)
kmem_cache_destroy(conf->slab_cache);
kmem_cache_destroy(conf->slab_cache);
conf->slab_cache = NULL;
}