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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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16
src/engine/engine_pt.c
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@@ -52,16 +52,14 @@ static inline void _ocf_read_pt_submit(struct ocf_request *req)
int ocf_read_pt_do(struct ocf_request *req)
{
struct ocf_cache *cache = req->cache;
/* Get OCF request - increase reference counter */
ocf_req_get(req);
if (req->info.dirty_any) {
OCF_METADATA_LOCK_RD();
ocf_req_hash_lock_rd(req);
/* Need to clean, start it */
ocf_engine_clean(req);
OCF_METADATA_UNLOCK_RD();
ocf_req_hash_unlock_rd(req);
/* Do not processing, because first we need to clean request */
ocf_req_put(req);
@@ -72,14 +70,14 @@ int ocf_read_pt_do(struct ocf_request *req)
if (req->info.re_part) {
OCF_DEBUG_RQ(req, "Re-Part");
OCF_METADATA_LOCK_WR();
ocf_req_hash_lock_wr(req);
/* Probably some cache lines are assigned into wrong
* partition. Need to move it to new one
*/
ocf_part_move(req);
OCF_METADATA_UNLOCK_WR();
ocf_req_hash_unlock_wr(req);
}
/* Submit read IO to the core */
@@ -105,7 +103,6 @@ int ocf_read_pt(struct ocf_request *req)
{
bool use_cache = false;
int lock = OCF_LOCK_NOT_ACQUIRED;
struct ocf_cache *cache = req->cache;
OCF_DEBUG_TRACE(req->cache);
@@ -117,7 +114,8 @@ int ocf_read_pt(struct ocf_request *req)
/* Set resume io_if */
req->io_if = &_io_if_pt_resume;
OCF_METADATA_LOCK_RD(); /*- Metadata RD access -----------------------*/
ocf_req_hash(req);
ocf_req_hash_lock_rd(req);
/* Traverse request to check if there are mapped cache lines */
ocf_engine_traverse(req);
@@ -136,7 +134,7 @@ int ocf_read_pt(struct ocf_request *req)
}
}
OCF_METADATA_UNLOCK_RD(); /*- END Metadata RD access -----------------*/
ocf_req_hash_unlock_rd(req);
if (use_cache) {
/*