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Switch from global metadata locks to hash-bucket locks in engines

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Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
This commit is contained in:
Adam Rutkowski
2019-07-31 16:31:28 -04:00
parent b39bcf86d4
commit 3a70d68d38
12 changed files with 124 additions and 129 deletions
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10
src/engine/engine_wi.c
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@@ -52,12 +52,12 @@ static int ocf_write_wi_update_and_flush_metadata(struct ocf_request *req)
if (ocf_engine_mapped_count(req)) {
/* There are mapped cache line, need to remove them */
OCF_METADATA_LOCK_WR(); /*- Metadata WR access ---------------*/
ocf_req_hash_lock_wr(req); /*- Metadata WR access ---------------*/
/* Remove mapped cache lines from metadata */
ocf_purge_map_info(req);
OCF_METADATA_UNLOCK_WR(); /*- END Metadata WR access ---------*/
ocf_req_hash_unlock_wr(req); /*- END Metadata WR access ---------*/
if (req->info.flush_metadata) {
/* Request was dirty and need to flush metadata */
@@ -135,7 +135,6 @@ static const struct ocf_io_if _io_if_wi_resume = {
int ocf_write_wi(struct ocf_request *req)
{
int lock = OCF_LOCK_NOT_ACQUIRED;
struct ocf_cache *cache = req->cache;
OCF_DEBUG_TRACE(req->cache);
@@ -147,7 +146,8 @@ int ocf_write_wi(struct ocf_request *req)
/* Set resume io_if */
req->io_if = &_io_if_wi_resume;
OCF_METADATA_LOCK_RD(); /*- Metadata READ access, No eviction --------*/
ocf_req_hash(req);
ocf_req_hash_lock_rd(req); /*- Metadata READ access, No eviction --------*/
/* Travers to check if request is mapped fully */
ocf_engine_traverse(req);
@@ -159,7 +159,7 @@ int ocf_write_wi(struct ocf_request *req)
lock = OCF_LOCK_ACQUIRED;
}
OCF_METADATA_UNLOCK_RD(); /*- END Metadata READ access----------------*/
ocf_req_hash_unlock_rd(req); /*- END Metadata READ access----------------*/
if (lock >= 0) {
if (lock == OCF_LOCK_ACQUIRED) {