nfsd: use a long for the count in nfsd4_state_shrinker_count()

jtlayton · chucklever · commit 261e3bbf9747 · 2025-03-10T09:11:12.000-04:00
If there are no courtesy clients then the return value from the
atomic_long_read() could overflow an int. Use a long to store the value
instead.

Signed-off-by: Jeff Layton &lt;jlayton@kernel.org&gt;
Signed-off-by: Chuck Lever &lt;chuck.lever@oracle.com&gt;
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
@@ -4815,8 +4815,8 @@ nfsd4_init_slabs(void)
 static unsigned long
 nfsd4_state_shrinker_count(struct shrinker *shrink, struct shrink_control *sc)
 {
-	int count;
 	struct nfsd_net *nn = shrink->private_data;
+	long count;
 
 	count = atomic_read(&nn->nfsd_courtesy_clients);
 	if (!count)

Original file line number	Diff line number	Diff line change
`@@ -4815,8 +4815,8 @@ nfsd4_init_slabs(void)`
`4815`	`4815`	`static unsigned long`
`4816`	`4816`	`nfsd4_state_shrinker_count(struct shrinker shrink, struct shrink_control sc)`
`4817`	`4817`	`{`
`4818`		`- int count;`
`4819`	`4818`	`struct nfsd_net *nn = shrink->private_data;`
	`4819`	`+ long count;`
`4820`	`4820`
`4821`	`4821`	`count = atomic_read(&nn->nfsd_courtesy_clients);`
`4822`	`4822`	`if (!count)`