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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_zero.c
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@@ -18,19 +18,17 @@
static int ocf_zero_purge(struct ocf_request *req)
{
struct ocf_cache *cache = req->cache;
if (req->error) {
ocf_engine_error(req, true, "Failed to discard data on cache");
} else {
/* 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 ---------*/
}
ocf_req_unlock_wr(req);
@@ -142,6 +140,10 @@ void ocf_engine_zero_line(struct ocf_request *req)
ENV_BUG_ON(req->core_line_count != 1);
/* No hash bucket locking here - ocf_engine_zero_line caller must hold
* metadata global write lock, so we have exclusive access to all hash
* buckets here. */
/* Traverse to check if request is mapped */
ocf_engine_traverse(req);