author: Linus Torvalds <torvalds@linux-foundation.org> 2021-10-24 09:48:33 -1000
committer: Linus Torvalds <torvalds@linux-foundation.org> 2021-10-24 09:48:33 -1000
commit: 87066fdd2e30fe9dd531125d95257c118a74617e
parent: b20078fd69a3da08d85c79b95101cf25c4afcc97
Commit Summary:
Diffstat:
1 file changed, 4 insertions, 5 deletions
diff --git a/mm/secretmem.c b/mm/secretmem.c
index 1fea68b8d5a6..030f02ddc7c1 100644
--- a/mm/secretmem.c
+++ b/mm/secretmem.c
@@ -18,7 +18,6 @@
#include <linux/secretmem.h>
#include <linux/set_memory.h>
#include <linux/sched/signal.h>
-#include <linux/refcount.h>
#include <uapi/linux/magic.h>
@@ -41,11 +40,11 @@ module_param_named(enable, secretmem_enable, bool, 0400);
MODULE_PARM_DESC(secretmem_enable,
"Enable secretmem and memfd_secret(2) system call");
-static refcount_t secretmem_users;
+static atomic_t secretmem_users;
bool secretmem_active(void)
{
- return !!refcount_read(&secretmem_users);
+ return !!atomic_read(&secretmem_users);
}
static vm_fault_t secretmem_fault(struct vm_fault *vmf)
@@ -104,7 +103,7 @@ static const struct vm_operations_struct secretmem_vm_ops = {
static int secretmem_release(struct inode *inode, struct file *file)
{
- refcount_dec(&secretmem_users);
+ atomic_dec(&secretmem_users);
return 0;
}
@@ -218,7 +217,7 @@ SYSCALL_DEFINE1(memfd_secret, unsigned int, flags)
file->f_flags |= O_LARGEFILE;
fd_install(fd, file);
- refcount_inc(&secretmem_users);
+ atomic_inc(&secretmem_users);
return fd;
err_put_fd: