spin_unlock(&nn->client_lock);
}
+static inline struct nfs4_stateowner *
+nfs4_get_stateowner(struct nfs4_stateowner *sop)
+{
+ atomic_inc(&sop->so_count);
+ return sop;
+}
+
static int
same_owner_str(struct nfs4_stateowner *sop, struct xdr_netobj *owner)
{
so_strhash) {
if (!so->so_is_open_owner)
continue;
- if (same_owner_str(so, &open->op_owner)) {
- atomic_inc(&so->so_count);
- return openowner(so);
- }
+ if (same_owner_str(so, &open->op_owner))
+ return openowner(nfs4_get_stateowner(so));
}
return NULL;
}
static void nfs4_put_deleg_lease(struct nfs4_file *fp)
{
struct file *filp = NULL;
- struct file_lock *fl;
spin_lock(&fp->fi_lock);
- if (fp->fi_lease && atomic_dec_and_test(&fp->fi_delegees)) {
+ if (fp->fi_deleg_file && atomic_dec_and_test(&fp->fi_delegees))
swap(filp, fp->fi_deleg_file);
- fl = fp->fi_lease;
- fp->fi_lease = NULL;
- }
spin_unlock(&fp->fi_lock);
if (filp) {
- vfs_setlease(filp, F_UNLCK, &fl);
+ vfs_setlease(filp, F_UNLCK, NULL, NULL);
fput(filp);
}
}
}
while (!list_empty(&clp->cl_openowners)) {
oo = list_entry(clp->cl_openowners.next, struct nfs4_openowner, oo_perclient);
- atomic_inc(&oo->oo_owner.so_count);
+ nfs4_get_stateowner(&oo->oo_owner);
release_openowner(oo);
}
nfsd4_shutdown_callback(clp);
INIT_LIST_HEAD(&fp->fi_stateids);
INIT_LIST_HEAD(&fp->fi_delegations);
fh_copy_shallow(&fp->fi_fhandle, fh);
+ fp->fi_deleg_file = NULL;
fp->fi_had_conflict = false;
- fp->fi_lease = NULL;
fp->fi_share_deny = 0;
memset(fp->fi_fds, 0, sizeof(fp->fi_fds));
memset(fp->fi_access, 0, sizeof(fp->fi_access));
{
if (!nfsd4_has_session(cstate)) {
mutex_lock(&so->so_replay.rp_mutex);
- cstate->replay_owner = so;
- atomic_inc(&so->so_count);
+ cstate->replay_owner = nfs4_get_stateowner(so);
}
}
atomic_inc(&stp->st_stid.sc_count);
stp->st_stid.sc_type = NFS4_OPEN_STID;
INIT_LIST_HEAD(&stp->st_locks);
- stp->st_stateowner = &oo->oo_owner;
- atomic_inc(&stp->st_stateowner->so_count);
+ stp->st_stateowner = nfs4_get_stateowner(&oo->oo_owner);
get_nfs4_file(fp);
stp->st_stid.sc_file = fp;
stp->st_access_bmap = 0;
}
/* Called from break_lease() with i_lock held. */
-static void nfsd_break_deleg_cb(struct file_lock *fl)
+static bool
+nfsd_break_deleg_cb(struct file_lock *fl)
{
+ bool ret = false;
struct nfs4_file *fp = (struct nfs4_file *)fl->fl_owner;
struct nfs4_delegation *dp;
if (!fp) {
WARN(1, "(%p)->fl_owner NULL\n", fl);
- return;
+ return ret;
}
if (fp->fi_had_conflict) {
WARN(1, "duplicate break on %p\n", fp);
- return;
+ return ret;
}
/*
* We don't want the locks code to timeout the lease for us;
spin_lock(&fp->fi_lock);
fp->fi_had_conflict = true;
/*
- * If there are no delegations on the list, then we can't count on this
- * lease ever being cleaned up. Set the fl_break_time to jiffies so that
- * time_out_leases will do it ASAP. The fact that fi_had_conflict is now
- * true should keep any new delegations from being hashed.
+ * If there are no delegations on the list, then return true
+ * so that the lease code will go ahead and delete it.
*/
if (list_empty(&fp->fi_delegations))
- fl->fl_break_time = jiffies;
+ ret = true;
else
list_for_each_entry(dp, &fp->fi_delegations, dl_perfile)
nfsd_break_one_deleg(dp);
spin_unlock(&fp->fi_lock);
+ return ret;
}
-static
-int nfsd_change_deleg_cb(struct file_lock **onlist, int arg)
+static int
+nfsd_change_deleg_cb(struct file_lock **onlist, int arg, struct list_head *dispose)
{
if (arg & F_UNLCK)
- return lease_modify(onlist, arg);
+ return lease_modify(onlist, arg, dispose);
else
return -EAGAIN;
}
static int nfs4_setlease(struct nfs4_delegation *dp)
{
struct nfs4_file *fp = dp->dl_stid.sc_file;
- struct file_lock *fl;
+ struct file_lock *fl, *ret;
struct file *filp;
int status = 0;
return -EBADF;
}
fl->fl_file = filp;
- status = vfs_setlease(filp, fl->fl_type, &fl);
- if (status) {
+ ret = fl;
+ status = vfs_setlease(filp, fl->fl_type, &fl, NULL);
+ if (fl)
locks_free_lock(fl);
+ if (status)
goto out_fput;
- }
spin_lock(&state_lock);
spin_lock(&fp->fi_lock);
/* Did the lease get broken before we took the lock? */
if (fp->fi_had_conflict)
goto out_unlock;
/* Race breaker */
- if (fp->fi_lease) {
+ if (fp->fi_deleg_file) {
status = 0;
atomic_inc(&fp->fi_delegees);
hash_delegation_locked(dp, fp);
goto out_unlock;
}
- fp->fi_lease = fl;
fp->fi_deleg_file = filp;
atomic_set(&fp->fi_delegees, 1);
hash_delegation_locked(dp, fp);
spin_lock(&state_lock);
spin_lock(&fp->fi_lock);
dp->dl_stid.sc_file = fp;
- if (!fp->fi_lease) {
+ if (!fp->fi_deleg_file) {
spin_unlock(&fp->fi_lock);
spin_unlock(&state_lock);
status = nfs4_setlease(dp);
lock->fl_end = OFFSET_MAX;
}
-/* Hack!: For now, we're defining this just so we can use a pointer to it
- * as a unique cookie to identify our (NFSv4's) posix locks. */
+static void nfsd4_fl_get_owner(struct file_lock *dst, struct file_lock *src)
+{
+ struct nfs4_lockowner *lo = (struct nfs4_lockowner *)src->fl_owner;
+ dst->fl_owner = (fl_owner_t)lockowner(nfs4_get_stateowner(&lo->lo_owner));
+}
+
+static void nfsd4_fl_put_owner(struct file_lock *fl)
+{
+ struct nfs4_lockowner *lo = (struct nfs4_lockowner *)fl->fl_owner;
+
+ if (lo) {
+ nfs4_put_stateowner(&lo->lo_owner);
+ fl->fl_owner = NULL;
+ }
+}
+
static const struct lock_manager_operations nfsd_posix_mng_ops = {
+ .lm_get_owner = nfsd4_fl_get_owner,
+ .lm_put_owner = nfsd4_fl_put_owner,
};
static inline void
so_strhash) {
if (so->so_is_open_owner)
continue;
- if (!same_owner_str(so, owner))
- continue;
- atomic_inc(&so->so_count);
- return lockowner(so);
+ if (same_owner_str(so, owner))
+ return lockowner(nfs4_get_stateowner(so));
}
return NULL;
}
atomic_inc(&stp->st_stid.sc_count);
stp->st_stid.sc_type = NFS4_LOCK_STID;
- stp->st_stateowner = &lo->lo_owner;
- atomic_inc(&lo->lo_owner.so_count);
+ stp->st_stateowner = nfs4_get_stateowner(&lo->lo_owner);
get_nfs4_file(fp);
stp->st_stid.sc_file = fp;
stp->st_stid.sc_free = nfs4_free_lock_stateid;
status = nfserr_openmode;
goto out;
}
- file_lock->fl_owner = (fl_owner_t)lock_sop;
+
+ file_lock->fl_owner = (fl_owner_t)lockowner(nfs4_get_stateowner(&lock_sop->lo_owner));
file_lock->fl_pid = current->tgid;
file_lock->fl_file = filp;
file_lock->fl_flags = FL_POSIX;
}
file_lock->fl_type = F_UNLCK;
- file_lock->fl_owner = (fl_owner_t)lockowner(stp->st_stateowner);
+ file_lock->fl_owner = (fl_owner_t)lockowner(nfs4_get_stateowner(stp->st_stateowner));
file_lock->fl_pid = current->tgid;
file_lock->fl_file = filp;
file_lock->fl_flags = FL_POSIX;
}
}
- atomic_inc(&sop->so_count);
+ nfs4_get_stateowner(sop);
break;
}
spin_unlock(&clp->cl_lock);
projects / karo-tx-linux.git / blobdiff