[PATCH] knfsd: Use new cache code for rsc cache
Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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parent
d4d11ea9d6
commit
17f834b6d2
1 changed files with 64 additions and 10 deletions
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@ -345,7 +345,8 @@ struct rsc {
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static struct cache_head *rsc_table[RSC_HASHMAX];
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static struct cache_detail rsc_cache;
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static struct rsc *rsc_lookup(struct rsc *item, int set);
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static struct rsc *rsc_update(struct rsc *new, struct rsc *old);
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static struct rsc *rsc_lookup(struct rsc *item);
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static void rsc_free(struct rsc *rsci)
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{
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@ -372,15 +373,21 @@ rsc_hash(struct rsc *rsci)
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return hash_mem(rsci->handle.data, rsci->handle.len, RSC_HASHBITS);
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}
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static inline int
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rsc_match(struct rsc *new, struct rsc *tmp)
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static int
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rsc_match(struct cache_head *a, struct cache_head *b)
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{
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struct rsc *new = container_of(a, struct rsc, h);
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struct rsc *tmp = container_of(b, struct rsc, h);
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return netobj_equal(&new->handle, &tmp->handle);
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}
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static inline void
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rsc_init(struct rsc *new, struct rsc *tmp)
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static void
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rsc_init(struct cache_head *cnew, struct cache_head *ctmp)
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{
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struct rsc *new = container_of(cnew, struct rsc, h);
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struct rsc *tmp = container_of(ctmp, struct rsc, h);
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new->handle.len = tmp->handle.len;
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tmp->handle.len = 0;
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new->handle.data = tmp->handle.data;
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@ -389,9 +396,12 @@ rsc_init(struct rsc *new, struct rsc *tmp)
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new->cred.cr_group_info = NULL;
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}
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static inline void
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rsc_update(struct rsc *new, struct rsc *tmp)
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static void
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update_rsc(struct cache_head *cnew, struct cache_head *ctmp)
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{
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struct rsc *new = container_of(cnew, struct rsc, h);
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struct rsc *tmp = container_of(ctmp, struct rsc, h);
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new->mechctx = tmp->mechctx;
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tmp->mechctx = NULL;
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memset(&new->seqdata, 0, sizeof(new->seqdata));
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@ -400,6 +410,16 @@ rsc_update(struct rsc *new, struct rsc *tmp)
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tmp->cred.cr_group_info = NULL;
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}
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static struct cache_head *
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rsc_alloc(void)
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{
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struct rsc *rsci = kmalloc(sizeof(*rsci), GFP_KERNEL);
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if (rsci)
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return &rsci->h;
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else
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return NULL;
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}
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static int rsc_parse(struct cache_detail *cd,
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char *mesg, int mlen)
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{
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@ -425,6 +445,10 @@ static int rsc_parse(struct cache_detail *cd,
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if (expiry == 0)
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goto out;
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rscp = rsc_lookup(&rsci);
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if (!rscp)
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goto out;
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/* uid, or NEGATIVE */
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rv = get_int(&mesg, &rsci.cred.cr_uid);
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if (rv == -EINVAL)
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@ -480,12 +504,14 @@ static int rsc_parse(struct cache_detail *cd,
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gss_mech_put(gm);
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}
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rsci.h.expiry_time = expiry;
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rscp = rsc_lookup(&rsci, 1);
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rscp = rsc_update(&rsci, rscp);
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status = 0;
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out:
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rsc_free(&rsci);
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if (rscp)
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rsc_put(&rscp->h, &rsc_cache);
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else
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status = -ENOMEM;
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return status;
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}
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@ -496,9 +522,37 @@ static struct cache_detail rsc_cache = {
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.name = "auth.rpcsec.context",
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.cache_put = rsc_put,
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.cache_parse = rsc_parse,
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.match = rsc_match,
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.init = rsc_init,
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.update = update_rsc,
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.alloc = rsc_alloc,
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};
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static DefineSimpleCacheLookup(rsc, rsc);
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static struct rsc *rsc_lookup(struct rsc *item)
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{
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struct cache_head *ch;
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int hash = rsc_hash(item);
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ch = sunrpc_cache_lookup(&rsc_cache, &item->h, hash);
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if (ch)
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return container_of(ch, struct rsc, h);
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else
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return NULL;
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}
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static struct rsc *rsc_update(struct rsc *new, struct rsc *old)
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{
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struct cache_head *ch;
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int hash = rsc_hash(new);
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ch = sunrpc_cache_update(&rsc_cache, &new->h,
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&old->h, hash);
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if (ch)
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return container_of(ch, struct rsc, h);
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else
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return NULL;
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}
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static struct rsc *
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gss_svc_searchbyctx(struct xdr_netobj *handle)
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@ -509,7 +563,7 @@ gss_svc_searchbyctx(struct xdr_netobj *handle)
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memset(&rsci, 0, sizeof(rsci));
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if (dup_to_netobj(&rsci.handle, handle->data, handle->len))
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return NULL;
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found = rsc_lookup(&rsci, 0);
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found = rsc_lookup(&rsci);
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rsc_free(&rsci);
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if (!found)
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return NULL;
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