diff options
| -rw-r--r-- | fs/nfsd/nfs4state.c | 71 |
1 files changed, 32 insertions, 39 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index eec990022ad3..dcbe7f37759d 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -133,21 +133,21 @@ unsigned int max_delegations; * Open owner state (share locks) */ -/* hash tables for open owners */ -#define OPEN_OWNER_HASH_BITS 8 -#define OPEN_OWNER_HASH_SIZE (1 << OPEN_OWNER_HASH_BITS) -#define OPEN_OWNER_HASH_MASK (OPEN_OWNER_HASH_SIZE - 1) +/* hash tables for lock and open owners */ +#define OWNER_HASH_BITS 8 +#define OWNER_HASH_SIZE (1 << OWNER_HASH_BITS) +#define OWNER_HASH_MASK (OWNER_HASH_SIZE - 1) -static unsigned int open_ownerstr_hashval(u32 clientid, struct xdr_netobj *ownername) +static unsigned int ownerstr_hashval(u32 clientid, struct xdr_netobj *ownername) { unsigned int ret; ret = opaque_hashval(ownername->data, ownername->len); ret += clientid; - return ret & OPEN_OWNER_HASH_MASK; + return ret & OWNER_HASH_MASK; } -static struct list_head open_ownerstr_hashtbl[OPEN_OWNER_HASH_SIZE]; +static struct list_head ownerstr_hashtbl[OWNER_HASH_SIZE]; /* hash table for nfs4_file */ #define FILE_HASH_BITS 8 @@ -2373,7 +2373,7 @@ static inline void *alloc_stateowner(struct kmem_cache *slab, struct xdr_netobj static void hash_openowner(struct nfs4_openowner *oo, struct nfs4_client *clp, unsigned int strhashval) { - list_add(&oo->oo_owner.so_strhash, &open_ownerstr_hashtbl[strhashval]); + list_add(&oo->oo_owner.so_strhash, &ownerstr_hashtbl[strhashval]); list_add(&oo->oo_perclient, &clp->cl_openowners); } @@ -2436,7 +2436,9 @@ find_openstateowner_str(unsigned int hashval, struct nfsd4_open *open) struct nfs4_stateowner *so; struct nfs4_openowner *oo; - list_for_each_entry(so, &open_ownerstr_hashtbl[hashval], so_strhash) { + list_for_each_entry(so, &ownerstr_hashtbl[hashval], so_strhash) { + if (!so->so_is_open_owner) + continue; if (same_owner_str(so, &open->op_owner, &open->op_clientid)) { oo = openowner(so); renew_client(oo->oo_owner.so_client); @@ -2580,7 +2582,7 @@ nfsd4_process_open1(struct nfsd4_compound_state *cstate, if (open->op_file == NULL) return nfserr_jukebox; - strhashval = open_ownerstr_hashval(clientid->cl_id, &open->op_owner); + strhashval = ownerstr_hashval(clientid->cl_id, &open->op_owner); oo = find_openstateowner_str(strhashval, open); open->op_openowner = oo; if (!oo) { @@ -3718,13 +3720,7 @@ out: } -/* - * Lock owner state (byte-range locks) - */ #define LOFF_OVERFLOW(start, len) ((u64)(len) > ~(u64)(start)) -#define LOCK_HASH_BITS 8 -#define LOCK_HASH_SIZE (1 << LOCK_HASH_BITS) -#define LOCK_HASH_MASK (LOCK_HASH_SIZE - 1) static inline u64 end_offset(u64 start, u64 len) @@ -3746,8 +3742,6 @@ last_byte_offset(u64 start, u64 len) return end > start ? end - 1: NFS4_MAX_UINT64; } -static struct list_head lock_ownerstr_hashtbl[LOCK_HASH_SIZE]; - /* * TODO: Linux file offsets are _signed_ 64-bit quantities, which means that * we can't properly handle lock requests that go beyond the (2^63 - 1)-th @@ -3815,11 +3809,13 @@ static struct nfs4_lockowner * find_lockowner_str(struct inode *inode, clientid_t *clid, struct xdr_netobj *owner) { - unsigned int hashval = open_ownerstr_hashval(clid->cl_id, owner); + unsigned int hashval = ownerstr_hashval(clid->cl_id, owner); struct nfs4_lockowner *lo; struct nfs4_stateowner *op; - list_for_each_entry(op, &lock_ownerstr_hashtbl[hashval], so_strhash) { + list_for_each_entry(op, &ownerstr_hashtbl[hashval], so_strhash) { + if (op->so_is_open_owner) + continue; lo = lockowner(op); if (same_lockowner_ino(lo, inode, clid, owner)) return lo; @@ -3829,7 +3825,7 @@ find_lockowner_str(struct inode *inode, clientid_t *clid, static void hash_lockowner(struct nfs4_lockowner *lo, unsigned int strhashval, struct nfs4_client *clp, struct nfs4_ol_stateid *open_stp) { - list_add(&lo->lo_owner.so_strhash, &lock_ownerstr_hashtbl[strhashval]); + list_add(&lo->lo_owner.so_strhash, &ownerstr_hashtbl[strhashval]); list_add(&lo->lo_perstateid, &open_stp->st_lockowners); } @@ -3838,7 +3834,7 @@ static void hash_lockowner(struct nfs4_lockowner *lo, unsigned int strhashval, s * Called in nfsd4_lock - therefore, OPEN and OPEN_CONFIRM (if needed) has * occurred. * - * strhashval = open_ownerstr_hashval + * strhashval = ownerstr_hashval */ static struct nfs4_lockowner * @@ -3913,7 +3909,7 @@ __be32 lookup_or_create_lock_state(struct nfsd4_compound_state *cstate, struct n struct nfs4_ol_stateid, st_perstateowner); return nfs_ok; } - strhashval = open_ownerstr_hashval(cl->cl_clientid.cl_id, + strhashval = ownerstr_hashval(cl->cl_clientid.cl_id, &lock->v.new.owner); lo = alloc_init_lock_stateowner(strhashval, cl, ost, lock); if (lo == NULL) @@ -4277,7 +4273,7 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp, struct nfs4_ol_stateid *stp; struct xdr_netobj *owner = &rlockowner->rl_owner; struct list_head matches; - unsigned int hashval = open_ownerstr_hashval(clid->cl_id, owner); + unsigned int hashval = ownerstr_hashval(clid->cl_id, owner); __be32 status; dprintk("nfsd4_release_lockowner clientid: (%08x/%08x):\n", @@ -4294,7 +4290,9 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp, status = nfserr_locks_held; INIT_LIST_HEAD(&matches); - list_for_each_entry(sop, &lock_ownerstr_hashtbl[hashval], so_strhash) { + list_for_each_entry(sop, &ownerstr_hashtbl[hashval], so_strhash) { + if (sop->so_is_open_owner) + continue; if (!same_owner_str(sop, owner, clid)) continue; list_for_each_entry(stp, &sop->so_stateids, @@ -4444,16 +4442,16 @@ static void release_openowner_sop(struct nfs4_stateowner *sop) release_openowner(openowner(sop)); } -static int nfsd_release_n_owners(u64 num, - struct list_head hashtbl[], - unsigned int hashtbl_size, +static int nfsd_release_n_owners(u64 num, bool is_open_owner void (*release_sop)(struct nfs4_stateowner *)) { int i, count = 0; struct nfs4_stateowner *sop, *next; - for (i = 0; i < hashtbl_size; i++) { - list_for_each_entry_safe(sop, next, &hashtbl[i], so_strhash) { + for (i = 0; i < OWNER_HASH_SIZE; i++) { + list_for_each_entry_safe(sop, next, &ownerstr_hashtbl[i], so_strhash) { + if (sop->so_is_open_owner != is_open_owner) + continue; release_sop(sop); if (++count == num) return count; @@ -4467,8 +4465,7 @@ void nfsd_forget_locks(u64 num) int count; nfs4_lock_state(); - count = nfsd_release_n_owners(num, lock_ownerstr_hashtbl, - LOCK_HASH_SIZE, release_lockowner_sop); + count = nfsd_release_n_owners(num, false, release_lockowner_sop); nfs4_unlock_state(); printk(KERN_INFO "NFSD: Forgot %d locks", count); @@ -4479,8 +4476,7 @@ void nfsd_forget_openowners(u64 num) int count; nfs4_lock_state(); - count = nfsd_release_n_owners(num, open_ownerstr_hashtbl, - OPEN_OWNER_HASH_SIZE, release_openowner_sop); + count = nfsd_release_n_owners(num, true, release_openowner_sop); nfs4_unlock_state(); printk(KERN_INFO "NFSD: Forgot %d open owners", count); @@ -4549,11 +4545,8 @@ nfs4_state_init(void) for (i = 0; i < FILE_HASH_SIZE; i++) { INIT_LIST_HEAD(&file_hashtbl[i]); } - for (i = 0; i < OPEN_OWNER_HASH_SIZE; i++) { - INIT_LIST_HEAD(&open_ownerstr_hashtbl[i]); - } - for (i = 0; i < LOCK_HASH_SIZE; i++) { - INIT_LIST_HEAD(&lock_ownerstr_hashtbl[i]); + for (i = 0; i < OWNER_HASH_SIZE; i++) { + INIT_LIST_HEAD(&ownerstr_hashtbl[i]); } memset(&onestateid, ~0, sizeof(stateid_t)); INIT_LIST_HEAD(&close_lru); |