Commit aae5730e authored by Matthew Wilcox's avatar Matthew Wilcox Committed by Anna Schumaker

nfs: Use ida_simple API

Allocate the owner_id when we allocate the state and free it when we free
the state.  That lets us get rid of a gnarly ida_pre_get() / ida_get_new()
loop.
Signed-off-by: default avatarMatthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: default avatarJeff Layton <jlayton@redhat.com>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent 35156bff
......@@ -428,7 +428,6 @@ nfs4_insert_state_owner_locked(struct nfs4_state_owner *new)
struct rb_node **p = &server->state_owners.rb_node,
*parent = NULL;
struct nfs4_state_owner *sp;
int err;
while (*p != NULL) {
parent = *p;
......@@ -445,9 +444,6 @@ nfs4_insert_state_owner_locked(struct nfs4_state_owner *new)
return sp;
}
}
err = ida_get_new(&server->openowner_id, &new->so_seqid.owner_id);
if (err)
return ERR_PTR(err);
rb_link_node(&new->so_server_node, parent, p);
rb_insert_color(&new->so_server_node, &server->state_owners);
return new;
......@@ -460,7 +456,6 @@ nfs4_remove_state_owner_locked(struct nfs4_state_owner *sp)
if (!RB_EMPTY_NODE(&sp->so_server_node))
rb_erase(&sp->so_server_node, &server->state_owners);
ida_remove(&server->openowner_id, sp->so_seqid.owner_id);
}
static void
......@@ -495,6 +490,12 @@ nfs4_alloc_state_owner(struct nfs_server *server,
sp = kzalloc(sizeof(*sp), gfp_flags);
if (!sp)
return NULL;
sp->so_seqid.owner_id = ida_simple_get(&server->openowner_id, 0, 0,
gfp_flags);
if (sp->so_seqid.owner_id < 0) {
kfree(sp);
return NULL;
}
sp->so_server = server;
sp->so_cred = get_rpccred(cred);
spin_lock_init(&sp->so_lock);
......@@ -526,6 +527,7 @@ static void nfs4_free_state_owner(struct nfs4_state_owner *sp)
{
nfs4_destroy_seqid_counter(&sp->so_seqid);
put_rpccred(sp->so_cred);
ida_simple_remove(&sp->so_server->openowner_id, sp->so_seqid.owner_id);
kfree(sp);
}
......@@ -576,13 +578,9 @@ struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *server,
new = nfs4_alloc_state_owner(server, cred, gfp_flags);
if (new == NULL)
goto out;
do {
if (ida_pre_get(&server->openowner_id, gfp_flags) == 0)
break;
spin_lock(&clp->cl_lock);
sp = nfs4_insert_state_owner_locked(new);
spin_unlock(&clp->cl_lock);
} while (sp == ERR_PTR(-EAGAIN));
if (sp != new)
nfs4_free_state_owner(new);
out:
......
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