The per-cpu allocator guarantees the returned memory is going to be
zeroed out so it's redundant to do our own zeroing when initialising
cbt. Simply remove this code.
Signed-off-by: Nikolay Borisov <nikolay.bori...@virtuozzo.com>
---
block/blk-cbt.c | 11 +----------
1 file changed, 1 insertion(+), 10 deletions(-)
diff --git a/block/blk-cbt.c b/block/blk-cbt.c
index c7cf7b0ae264..e2a9be83ac0d 100644
--- a/block/blk-cbt.c
+++ b/block/blk-cbt.c
@@ -265,12 +265,8 @@ inline void blk_cbt_bio_queue(struct request_queue *q,
struct bio *bio)
static struct cbt_info* do_cbt_alloc(struct request_queue *q, __u8 *uuid,
loff_t size, loff_t blocksize)
{
- struct cbt_info *cbt;
- struct cbt_extent *ex;
- int i;
-
+ struct cbt_info *cbt = kzalloc(sizeof(*cbt), GFP_KERNEL);
- cbt = kzalloc(sizeof(*cbt), GFP_KERNEL);
if (!cbt)
return ERR_PTR(-ENOMEM);
@@ -282,11 +278,6 @@ static struct cbt_info* do_cbt_alloc(struct request_queue
*q, __u8 *uuid,
if (!cbt->cache)
goto err_cbt;
- for_each_possible_cpu(i) {
- ex = per_cpu_ptr(cbt->cache, i);
- memset(ex, 0, sizeof (*ex));
- }
-
cbt->map = vmalloc(NR_PAGES(cbt->block_max) * sizeof(void*));
if (!cbt->map)
goto err_pcpu;
--
2.34.1
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