From: Zheng Liu <wenqing.lz@xxxxxxxxxx>
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@xxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
---
Hi Jan,
This patch could be folded into the commit that you have applied:
jbd: use kmem_cache_zalloc instead of kmem_cache_alloc/memset
Regards,
- Zheng
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 81cc7ea..c5a6926 100644
--- a/fs/jbd/journal.c
+++ b/fs/jbd/journal.c
@@ -1845,7 +1845,7 @@ 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",
@@ -1853,7 +1853,7 @@ 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;
@@ -1915,10 +1915,8 @@ 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)) {
--
1.7.12.rc2.18.g61b472e
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