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authorZheng Liu <wenqing.lz@taobao.com>2013-05-28 07:27:11 -0400
committerTheodore Ts'o <tytso@mit.edu>2013-05-28 07:27:11 -0400
commit5d9cf9c6254ddc551fb51072f59dfae60e579736 (patch)
tree75d7684a3a160406ad8c4247e0b260f57d7c80f0 /fs
parentd23142c6271c499d913d0d5e668b5a4eb6dafcb0 (diff)
downloadlinux-5d9cf9c6254ddc551fb51072f59dfae60e579736.tar.bz2
jbd2: 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 <wenqing.lz@taobao.com> Cc: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs')
-rw-r--r--fs/jbd2/journal.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 95457576e434..3cdd285df204 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -2325,13 +2325,13 @@ static struct journal_head *journal_alloc_journal_head(void)
#ifdef CONFIG_JBD2_DEBUG
atomic_inc(&nr_journal_heads);
#endif
- ret = kmem_cache_alloc(jbd2_journal_head_cache, GFP_NOFS);
+ ret = kmem_cache_zalloc(jbd2_journal_head_cache, GFP_NOFS);
if (!ret) {
jbd_debug(1, "out of memory for journal_head\n");
pr_notice_ratelimited("ENOMEM in %s, retrying.\n", __func__);
while (!ret) {
yield();
- ret = kmem_cache_alloc(jbd2_journal_head_cache, GFP_NOFS);
+ ret = kmem_cache_zalloc(jbd2_journal_head_cache, GFP_NOFS);
}
}
return ret;
@@ -2393,10 +2393,8 @@ struct journal_head *jbd2_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)) {