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sunrpc/cache: change deferred-request hash table to use hlist.

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Being a hash table, hlist is the best option.

There is currently some ugliness were we treat "->next == NULL" as
a special case to avoid having to initialise the whole array.
This change nicely gets rid of that case.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
NeilBrown
2010-08-12 17:04:08 +10:00
committed by J. Bruce Fields
parent 2ed5282cd9
commit 1117449276
2 changed files with 11 additions and 19 deletions
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2
include/linux/sunrpc/cache.h
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@@ -133,7 +133,7 @@ struct cache_req {
* delayed awaiting cache-fill
*/
struct cache_deferred_req {
struct list_head hash; /* on hash chain */
struct hlist_node hash; /* on hash chain */
struct list_head recent; /* on fifo */
struct cache_head *item; /* cache item we wait on */
void *owner; /* we might need to discard all defered requests