jbd: use kmem_cache_zalloc instead of kmem_cache_alloc/memset

Now jbd_alloc_handle is only called by new_handle.  So this commit
uses kmem_cache_zalloc instead of kmem_cache_alloc/memset.

Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: Jan Kara <jack@suse.cz>

2 files changed, 1 insertions, 2 deletions

diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c
index 071d6905f0dd..e3e255c0a509 100644
--- a/fs/jbd/transaction.c
+++ b/fs/jbd/transaction.c
@@ -245,7 +245,6 @@ static handle_t *new_handle(int nblocks)
         handle_t *handle = jbd_alloc_handle(GFP_NOFS);
         if (!handle)
                 return NULL;
-        memset(handle, 0, sizeof(*handle));
         handle->h_buffer_credits = nblocks;
         handle->h_ref = 1;
 
diff --git a/include/linux/jbd.h b/include/linux/jbd.h
index c8f32975f0e4..7e0b622503c4 100644
--- a/include/linux/jbd.h
+++ b/include/linux/jbd.h
@@ -887,7 +887,7 @@ extern struct kmem_cache *jbd_handle_cache;
 
 static inline handle_t *jbd_alloc_handle(gfp_t gfp_flags)
 {
-        return kmem_cache_alloc(jbd_handle_cache, gfp_flags);
+        return kmem_cache_zalloc(jbd_handle_cache, gfp_flags);
 }
 
 static inline void jbd_free_handle(handle_t *handle)