The commit is pushed to "branch-rh9-5.14.0-162.6.1.vz9.18.x-ovz" and will
appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh9-5.14.0-162.6.1.vz9.18.11
------>
commit 5f7174578922430580de420303b50a3fac88349b
Author: Nikolay Borisov <nikolay.bori...@virtuozzo.com>
Date: Fri Jan 27 13:34:38 2023 +0200
blk-cbt: Remove needless zeroing
The per-cpu allocator guarantees the returned memory is going to be
zeroed out so it's redundant to do our own zeroing when initializing
cbt. Simply remove this code.
Fixes: ea18c5e9d2ba ("cbt: introduce changed block tracking")
Signed-off-by: Nikolay Borisov <nikolay.bori...@virtuozzo.com>
Reviewed-by: Alexander Atanasov <alexander.atana...@virtuozzo.com>
---
block/blk-cbt.c | 8 --------
1 file changed, 8 deletions(-)
diff --git a/block/blk-cbt.c b/block/blk-cbt.c
index c7cf7b0ae264..702a44e216e9 100644
--- a/block/blk-cbt.c
+++ b/block/blk-cbt.c
@@ -266,9 +266,6 @@ 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;
-
cbt = kzalloc(sizeof(*cbt), GFP_KERNEL);
if (!cbt)
@@ -282,11 +279,6 @@ 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;
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