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Merge pull request #517 from arutk/hit_shortcut

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Check for hit after upgrading hash bucket lock
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Robert Baldyga 2021-06-17 12:16:18 +02:00 committed by GitHub
commit c0b76f9e01
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1 changed files with 7 additions and 0 deletions
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7
src/engine/engine_common.c
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@ -615,6 +615,13 @@ int ocf_engine_prepare_clines(struct ocf_request *req)
/* Mapping must be performed holding (at least) hash-bucket write lock */
ocf_hb_req_prot_lock_upgrade(req);
if (unlikely(ocf_engine_is_mapped(req))) {
lock = lock_clines(req);
ocf_engine_set_hot(req);
ocf_hb_req_prot_unlock_wr(req);
return lock;
}
result = ocf_prepare_clines_miss(req);
if (!ocf_req_test_mapping_error(req))
ocf_engine_set_hot(req);