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authorDavid Howells <dhowells@redhat.com>2022-05-21 08:45:22 +0100
committerDavid S. Miller <davem@davemloft.net>2022-05-22 21:03:01 +0100
commita05754295e01f006a651eec759c5dbe682ef6cef (patch)
tree6c0e84ca69244201fbb76aa354ffab77c0893402 /net/rxrpc/local_object.c
parent33912c2639ad76660988c8ca97e4d18fca89b668 (diff)
rxrpc: Use refcount_t rather than atomic_t
Move to using refcount_t rather than atomic_t for refcounts in rxrpc. Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rxrpc/local_object.c')
-rw-r--r--net/rxrpc/local_object.c31
1 files changed, 16 insertions, 15 deletions
diff --git a/net/rxrpc/local_object.c b/net/rxrpc/local_object.c
index ea6f338bd131..96ecb7356c0f 100644
--- a/net/rxrpc/local_object.c
+++ b/net/rxrpc/local_object.c
@@ -79,7 +79,7 @@ static struct rxrpc_local *rxrpc_alloc_local(struct rxrpc_net *rxnet,
local = kzalloc(sizeof(struct rxrpc_local), GFP_KERNEL);
if (local) {
- atomic_set(&local->usage, 1);
+ refcount_set(&local->ref, 1);
atomic_set(&local->active_users, 1);
local->rxnet = rxnet;
INIT_HLIST_NODE(&local->link);
@@ -265,10 +265,10 @@ addr_in_use:
struct rxrpc_local *rxrpc_get_local(struct rxrpc_local *local)
{
const void *here = __builtin_return_address(0);
- int n;
+ int r;
- n = atomic_inc_return(&local->usage);
- trace_rxrpc_local(local->debug_id, rxrpc_local_got, n, here);
+ __refcount_inc(&local->ref, &r);
+ trace_rxrpc_local(local->debug_id, rxrpc_local_got, r + 1, here);
return local;
}
@@ -278,12 +278,12 @@ struct rxrpc_local *rxrpc_get_local(struct rxrpc_local *local)
struct rxrpc_local *rxrpc_get_local_maybe(struct rxrpc_local *local)
{
const void *here = __builtin_return_address(0);
+ int r;
if (local) {
- int n = atomic_fetch_add_unless(&local->usage, 1, 0);
- if (n > 0)
+ if (__refcount_inc_not_zero(&local->ref, &r))
trace_rxrpc_local(local->debug_id, rxrpc_local_got,
- n + 1, here);
+ r + 1, here);
else
local = NULL;
}
@@ -297,10 +297,10 @@ void rxrpc_queue_local(struct rxrpc_local *local)
{
const void *here = __builtin_return_address(0);
unsigned int debug_id = local->debug_id;
- int n = atomic_read(&local->usage);
+ int r = refcount_read(&local->ref);
if (rxrpc_queue_work(&local->processor))
- trace_rxrpc_local(debug_id, rxrpc_local_queued, n, here);
+ trace_rxrpc_local(debug_id, rxrpc_local_queued, r + 1, here);
else
rxrpc_put_local(local);
}
@@ -312,15 +312,16 @@ void rxrpc_put_local(struct rxrpc_local *local)
{
const void *here = __builtin_return_address(0);
unsigned int debug_id;
- int n;
+ bool dead;
+ int r;
if (local) {
debug_id = local->debug_id;
- n = atomic_dec_return(&local->usage);
- trace_rxrpc_local(debug_id, rxrpc_local_put, n, here);
+ dead = __refcount_dec_and_test(&local->ref, &r);
+ trace_rxrpc_local(debug_id, rxrpc_local_put, r, here);
- if (n == 0)
+ if (dead)
call_rcu(&local->rcu, rxrpc_local_rcu);
}
}
@@ -405,7 +406,7 @@ static void rxrpc_local_processor(struct work_struct *work)
bool again;
trace_rxrpc_local(local->debug_id, rxrpc_local_processing,
- atomic_read(&local->usage), NULL);
+ refcount_read(&local->ref), NULL);
do {
again = false;
@@ -461,7 +462,7 @@ void rxrpc_destroy_all_locals(struct rxrpc_net *rxnet)
mutex_lock(&rxnet->local_mutex);
hlist_for_each_entry(local, &rxnet->local_endpoints, link) {
pr_err("AF_RXRPC: Leaked local %p {%d}\n",
- local, atomic_read(&local->usage));
+ local, refcount_read(&local->ref));
}
mutex_unlock(&rxnet->local_mutex);
BUG();