From 8bb9da943a62f4ffaabba1ad745990260fbb39df Mon Sep 17 00:00:00 2001 From: Zheng Liu Date: Mon, 29 Apr 2013 17:08:51 +0800 Subject: [PATCH] jbd: use kmem_cache_zalloc for allocating journal head This commit tries to use kmem_cache_zalloc instead of kmem_cache_alloc/ memset when a new journal head is alloctated. Signed-off-by: Zheng Liu Cc: Jan Kara Signed-off-by: Jan Kara --- fs/jbd/journal.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c index 81880c6d6b5e..726a4432cbb1 100644 --- a/fs/jbd/journal.c +++ b/fs/jbd/journal.c @@ -1856,7 +1856,7 @@ static struct journal_head *journal_alloc_journal_head(void) #ifdef CONFIG_JBD_DEBUG atomic_inc(&nr_journal_heads); #endif - ret = kmem_cache_alloc(journal_head_cache, GFP_NOFS); + ret = kmem_cache_zalloc(journal_head_cache, GFP_NOFS); if (ret == NULL) { jbd_debug(1, "out of memory for journal_head\n"); printk_ratelimited(KERN_NOTICE "ENOMEM in %s, retrying.\n", @@ -1864,7 +1864,7 @@ static struct journal_head *journal_alloc_journal_head(void) while (ret == NULL) { yield(); - ret = kmem_cache_alloc(journal_head_cache, GFP_NOFS); + ret = kmem_cache_zalloc(journal_head_cache, GFP_NOFS); } } return ret; @@ -1926,10 +1926,8 @@ struct journal_head *journal_add_journal_head(struct buffer_head *bh) struct journal_head *new_jh = NULL; repeat: - if (!buffer_jbd(bh)) { + if (!buffer_jbd(bh)) new_jh = journal_alloc_journal_head(); - memset(new_jh, 0, sizeof(*new_jh)); - } jbd_lock_bh_journal_head(bh); if (buffer_jbd(bh)) { -- 2.30.2