CIFS: Prepare credits code for a slot reservation
that is essential for CIFS/SMB/SMB2 oplock breaks and SMB2 echos.
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index d55de96..2309a67 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -315,12 +315,22 @@
return num;
}
+static inline int*
+get_credits_field(struct TCP_Server_Info *server)
+{
+ /*
+ * This will change to switch statement when we reserve slots for echos
+ * and oplock breaks.
+ */
+ return &server->credits;
+}
+
static inline bool
-has_credits(struct TCP_Server_Info *server)
+has_credits(struct TCP_Server_Info *server, int *credits)
{
int num;
spin_lock(&server->req_lock);
- num = server->credits;
+ num = *credits;
spin_unlock(&server->req_lock);
return num > 0;
}