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SUNRPC: Refactor sunrpc_cache_lookup
This is a trivial split into lookup and insert functions, no change in behavior. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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parent
608a0ab2f5
commit
b92a8fabab
1 changed files with 25 additions and 8 deletions
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@ -54,13 +54,11 @@ static void cache_init(struct cache_head *h, struct cache_detail *detail)
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h->last_refresh = now;
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h->last_refresh = now;
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}
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}
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struct cache_head *sunrpc_cache_lookup(struct cache_detail *detail,
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static struct cache_head *sunrpc_cache_find(struct cache_detail *detail,
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struct cache_head *key, int hash)
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struct cache_head *key, int hash)
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{
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{
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struct cache_head *new = NULL, *freeme = NULL, *tmp = NULL;
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struct hlist_head *head = &detail->hash_table[hash];
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struct hlist_head *head;
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struct cache_head *tmp;
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head = &detail->hash_table[hash];
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read_lock(&detail->hash_lock);
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read_lock(&detail->hash_lock);
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@ -75,7 +73,15 @@ struct cache_head *sunrpc_cache_lookup(struct cache_detail *detail,
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}
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}
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}
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}
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read_unlock(&detail->hash_lock);
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read_unlock(&detail->hash_lock);
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/* Didn't find anything, insert an empty entry */
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return NULL;
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}
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static struct cache_head *sunrpc_cache_add_entry(struct cache_detail *detail,
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struct cache_head *key,
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int hash)
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{
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struct cache_head *new, *tmp, *freeme = NULL;
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struct hlist_head *head = &detail->hash_table[hash];
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new = detail->alloc();
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new = detail->alloc();
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if (!new)
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if (!new)
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@ -114,8 +120,19 @@ struct cache_head *sunrpc_cache_lookup(struct cache_detail *detail,
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cache_put(freeme, detail);
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cache_put(freeme, detail);
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return new;
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return new;
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}
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}
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EXPORT_SYMBOL_GPL(sunrpc_cache_lookup);
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struct cache_head *sunrpc_cache_lookup(struct cache_detail *detail,
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struct cache_head *key, int hash)
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{
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struct cache_head *ret;
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ret = sunrpc_cache_find(detail, key, hash);
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if (ret)
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return ret;
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/* Didn't find anything, insert an empty entry */
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return sunrpc_cache_add_entry(detail, key, hash);
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}
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EXPORT_SYMBOL_GPL(sunrpc_cache_lookup);
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static void cache_dequeue(struct cache_detail *detail, struct cache_head *ch);
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static void cache_dequeue(struct cache_detail *detail, struct cache_head *ch);
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