github/ocf
4
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Use management queue for parallelized management operations

Browse Source 
When IO queues are used for parallelized management operations,
e.g. changing cleaning policy, a deadlock may occur due to global
metadata lock interfering with taking request from IO queue,
as they might be run on the same thread. As a workaround using
a management queue specifically for such operations eliminates
this problem.

Signed-off-by: Rafal Stefanowski <rafal.stefanowski@huawei.com>
This commit is contained in:
Rafal Stefanowski
2024-09-23 12:13:33 +02:00
parent d8994e886e
commit 97ee3af8f7
7 changed files with 15 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
src/utils/utils_parallelize.c
View File

@@ -59,7 +59,8 @@ static int _ocf_parallelize_hndl(struct ocf_request *req)
int ocf_parallelize_create(ocf_parallelize_t *parallelize,
ocf_cache_t cache, unsigned shards_cnt, uint32_t priv_size,
ocf_parallelize_handle_t handle,
ocf_parallelize_finish_t finish)
ocf_parallelize_finish_t finish,
bool use_mngt_queue)
{
ocf_parallelize_t tmp_parallelize;
struct list_head *iter;
@@ -97,7 +98,7 @@ int ocf_parallelize_create(ocf_parallelize_t *parallelize,
iter = cache->io_queues.next;
for (i = 0; i < shards_cnt; i++) {
if (queue_count > 0) {
if (queue_count > 0 && !use_mngt_queue) {
queue = list_entry(iter, struct ocf_queue, list);
iter = iter->next;
if (iter == &cache->io_queues)

4
src/utils/utils_parallelize.h
View File

@@ -1,5 +1,6 @@
/*
* Copyright(c) 2022 Intel Corporation
* Copyright(c) 2024 Huawei Technologies
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -19,7 +20,8 @@ typedef void (*ocf_parallelize_finish_t)(ocf_parallelize_t parallelize,
int ocf_parallelize_create(ocf_parallelize_t *parallelize,
ocf_cache_t cache, unsigned shards_cnt, uint32_t priv_size,
ocf_parallelize_handle_t handle,
ocf_parallelize_finish_t finish);
ocf_parallelize_finish_t finish,
bool use_mngt_queue);
void ocf_parallelize_destroy(ocf_parallelize_t parallelize);