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[PATCH] knfsd: Get rid of 'inplace' sunrpc caches

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These were an unnecessary wart.  Also only have one 'DefineSimpleCache..'
instead of two.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
NeilBrown 2006-03-27 01:15:01 -08:00 • committed by Linus Torvalds
parent eab7e2e647
commit 7d317f2c9f
5 changed files with 18 additions and 30 deletions
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28
include/linux/sunrpc/cache.h
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@ -133,14 +133,11 @@ struct cache_deferred_req {
* If "set" == 0 :
* If an entry is found, it is returned
* If no entry is found, a new non-VALID entry is created.
* If "set" == 1 and INPLACE == 0 :
* If "set" == 1 :
* If no entry is found a new one is inserted with data from "template"
* If a non-CACHE_VALID entry is found, it is updated from template using UPDATE
* If a CACHE_VALID entry is found, a new entry is swapped in with data
* from "template"
* If set == 1, and INPLACE == 1 :
* As above, except that if a CACHE_VALID entry is found, we UPDATE in place
* instead of swapping in a new entry.
*
* If the passed handle has the CACHE_NEGATIVE flag set, then UPDATE is not
* run but insteead CACHE_NEGATIVE is set in any new item.
@ -159,13 +156,8 @@ struct cache_deferred_req {
* TEST tests if "tmp" matches "item"
* INIT copies key information from "item" to "new"
* UPDATE copies content information from "item" to "tmp"
* INPLACE is true if updates can happen inplace rather than allocating a new structure
*
* WARNING: any substantial changes to this must be reflected in
* net/sunrpc/svcauth.c(auth_domain_lookup)
* which is a similar routine that is open-coded.
*/
#define DefineCacheLookup(RTN,MEMBER,FNAME,ARGS,SETUP,DETAIL,HASHFN,TEST,INIT,UPDATE,INPLACE) \
#define DefineCacheLookup(RTN,MEMBER,FNAME,ARGS,SETUP,DETAIL,HASHFN,TEST,INIT,UPDATE) \
RTN *FNAME ARGS \
{ \
RTN *tmp, *new=NULL; \
@ -179,13 +171,13 @@ RTN *FNAME ARGS \
tmp = container_of(*hp, RTN, MEMBER); \
if (TEST) { /* found a match */ \
\
if (set && !INPLACE && test_bit(CACHE_VALID, &tmp->MEMBER.flags) && !new) \
if (set && test_bit(CACHE_VALID, &tmp->MEMBER.flags) && !new) \
break; \
\
if (new) \
{INIT;} \
if (set) { \
if (!INPLACE && test_bit(CACHE_VALID, &tmp->MEMBER.flags))\
if (test_bit(CACHE_VALID, &tmp->MEMBER.flags))\
{ /* need to swap in new */ \
RTN *t2; \
\
@ -206,7 +198,7 @@ RTN *FNAME ARGS \
else read_unlock(&(DETAIL)->hash_lock); \
if (set) \
cache_fresh(DETAIL, &tmp->MEMBER, item->MEMBER.expiry_time); \
if (set && !INPLACE && new) cache_fresh(DETAIL, &new->MEMBER, 0); \
if (set && new) cache_fresh(DETAIL, &new->MEMBER, 0); \
if (new) (DETAIL)->cache_put(&new->MEMBER, DETAIL); \
return tmp; \
} \
@ -239,10 +231,12 @@ RTN *FNAME ARGS \
return NULL; \
}
#define DefineSimpleCacheLookup(STRUCT,INPLACE) \
DefineCacheLookup(struct STRUCT, h, STRUCT##_lookup, (struct STRUCT *item, int set), /*no setup */, \
& STRUCT##_cache, STRUCT##_hash(item), STRUCT##_match(item, tmp),\
STRUCT##_init(new, item), STRUCT##_update(tmp, item),INPLACE)
#define DefineSimpleCacheLookup(STRUCT, FUNC) \
DefineCacheLookup(struct STRUCT, h, FUNC##_lookup, \
(struct STRUCT *item, int set), /*no setup */, \
& FUNC##_cache, FUNC##_hash(item), FUNC##_match(item, tmp), \
STRUCT##_init(new, item), STRUCT##_update(tmp, item))
#define cache_for_each(pos, detail, index, member) \
for (({read_lock(&(detail)->hash_lock); index = (detail)->hash_size;}) ; \