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Subject[PATCH 27/39] ocfs2: drop null test before destroy functions
Date
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);

@@
expression x;
@@

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

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

---
fs/ocfs2/dlm/dlmlock.c | 3 +--
fs/ocfs2/dlm/dlmmaster.c | 16 +++++-----------
fs/ocfs2/super.c | 18 ++++++------------
fs/ocfs2/uptodate.c | 3 +--
4 files changed, 13 insertions(+), 27 deletions(-)

diff --git a/fs/ocfs2/uptodate.c b/fs/ocfs2/uptodate.c
index 82e17b0..78f09c7 100644
--- a/fs/ocfs2/uptodate.c
+++ b/fs/ocfs2/uptodate.c
@@ -633,6 +633,5 @@ int __init init_ocfs2_uptodate_cache(void)

void exit_ocfs2_uptodate_cache(void)
{
- if (ocfs2_uptodate_cachep)
- kmem_cache_destroy(ocfs2_uptodate_cachep);
+ kmem_cache_destroy(ocfs2_uptodate_cachep);
}
diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c
index 46b8b2b..eb53b98 100644
--- a/fs/ocfs2/dlm/dlmmaster.c
+++ b/fs/ocfs2/dlm/dlmmaster.c
@@ -414,8 +414,7 @@ int dlm_init_mle_cache(void)

void dlm_destroy_mle_cache(void)
{
- if (dlm_mle_cache)
- kmem_cache_destroy(dlm_mle_cache);
+ kmem_cache_destroy(dlm_mle_cache);
}

static void dlm_mle_release(struct kref *kref)
@@ -472,15 +471,10 @@ bail:

void dlm_destroy_master_caches(void)
{
- if (dlm_lockname_cache) {
- kmem_cache_destroy(dlm_lockname_cache);
- dlm_lockname_cache = NULL;
- }
-
- if (dlm_lockres_cache) {
- kmem_cache_destroy(dlm_lockres_cache);
- dlm_lockres_cache = NULL;
- }
+ kmem_cache_destroy(dlm_lockname_cache);
+ dlm_lockname_cache = NULL;
+ kmem_cache_destroy(dlm_lockres_cache);
+ dlm_lockres_cache = NULL;
}

static void dlm_lockres_release(struct kref *kref)
diff --git a/fs/ocfs2/dlm/dlmlock.c b/fs/ocfs2/dlm/dlmlock.c
index 66c2a49..7496231 100644
--- a/fs/ocfs2/dlm/dlmlock.c
+++ b/fs/ocfs2/dlm/dlmlock.c
@@ -77,8 +77,7 @@ int dlm_init_lock_cache(void)

void dlm_destroy_lock_cache(void)
{
- if (dlm_lock_cache)
- kmem_cache_destroy(dlm_lock_cache);
+ kmem_cache_destroy(dlm_lock_cache);
}

/* Tell us whether we can grant a new lock request.
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 2de4c8a..88396d2 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -1786,12 +1786,9 @@ static int ocfs2_initialize_mem_caches(void)
NULL);
if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep ||
!ocfs2_qf_chunk_cachep) {
- if (ocfs2_inode_cachep)
- kmem_cache_destroy(ocfs2_inode_cachep);
- if (ocfs2_dquot_cachep)
- kmem_cache_destroy(ocfs2_dquot_cachep);
- if (ocfs2_qf_chunk_cachep)
- kmem_cache_destroy(ocfs2_qf_chunk_cachep);
+ kmem_cache_destroy(ocfs2_inode_cachep);
+ kmem_cache_destroy(ocfs2_dquot_cachep);
+ kmem_cache_destroy(ocfs2_qf_chunk_cachep);
return -ENOMEM;
}

@@ -1805,16 +1802,13 @@ static void ocfs2_free_mem_caches(void)
* destroy cache.
*/
rcu_barrier();
- if (ocfs2_inode_cachep)
- kmem_cache_destroy(ocfs2_inode_cachep);
+ kmem_cache_destroy(ocfs2_inode_cachep);
ocfs2_inode_cachep = NULL;

- if (ocfs2_dquot_cachep)
- kmem_cache_destroy(ocfs2_dquot_cachep);
+ kmem_cache_destroy(ocfs2_dquot_cachep);
ocfs2_dquot_cachep = NULL;

- if (ocfs2_qf_chunk_cachep)
- kmem_cache_destroy(ocfs2_qf_chunk_cachep);
+ kmem_cache_destroy(ocfs2_qf_chunk_cachep);
ocfs2_qf_chunk_cachep = NULL;
}



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