From ee626a77d3725a129391b1c85edd46f3b470cca9 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Sun, 11 Sep 2011 13:48:41 -0400 Subject: [PATCH] nfsd4: better stateid hashing First, we shouldn't care here about the structure of the opaque part of the stateid. Second, this hash is really dumb. (I'm not sure the replacement is much better, though--to look at it another patch.) Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4state.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index ea338d0c62a..0cd346477f2 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -168,9 +168,9 @@ static unsigned int file_hashval(struct inode *ino) return hash_ptr(ino, FILE_HASH_BITS); } -static unsigned int stateid_hashval(u32 owner_id, u32 file_id) +static unsigned int stateid_hashval(stateid_t *s) { - return (owner_id + file_id) & STATEID_HASH_MASK; + return opaque_hashval(&s->si_opaque, sizeof(stateid_opaque_t)) & STATEID_HASH_MASK; } static struct list_head file_hashtbl[FILE_HASH_SIZE]; @@ -221,7 +221,7 @@ static inline void hash_stid(struct nfs4_stid *stid) stateid_t *s = &stid->sc_stateid; unsigned int hashval; - hashval = stateid_hashval(s->si_stateownerid, s->si_fileid); + hashval = stateid_hashval(s); list_add(&stid->sc_hash, &stateid_hashtbl[hashval]); } @@ -1083,7 +1083,7 @@ static struct nfs4_stid *find_stateid(stateid_t *t) struct nfs4_stid *s; unsigned int hashval; - hashval = stateid_hashval(t->si_stateownerid, t->si_fileid); + hashval = stateid_hashval(t); list_for_each_entry(s, &stateid_hashtbl[hashval], sc_hash) if (same_stateid(&s->sc_stateid, t)) return s; -- 2.20.1