diff options
Diffstat (limited to 'fs/userfaultfd.c')
| -rw-r--r-- | fs/userfaultfd.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c index 40f9e1a2ebdd..28e942feacc8 100644 --- a/fs/userfaultfd.c +++ b/fs/userfaultfd.c @@ -32,7 +32,22 @@ #include <linux/swapops.h> #include <linux/miscdevice.h> -int sysctl_unprivileged_userfaultfd __read_mostly; +static int sysctl_unprivileged_userfaultfd __read_mostly; + +#ifdef CONFIG_SYSCTL +static struct ctl_table vm_userfaultfd_table[] = { + { + .procname = "unprivileged_userfaultfd", + .data = &sysctl_unprivileged_userfaultfd, + .maxlen = sizeof(sysctl_unprivileged_userfaultfd), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = SYSCTL_ZERO, + .extra2 = SYSCTL_ONE, + }, + { } +}; +#endif static struct kmem_cache *userfaultfd_ctx_cachep __read_mostly; @@ -2180,6 +2195,9 @@ static int __init userfaultfd_init(void) 0, SLAB_HWCACHE_ALIGN|SLAB_PANIC, init_once_userfaultfd_ctx); +#ifdef CONFIG_SYSCTL + register_sysctl_init("vm", vm_userfaultfd_table); +#endif return 0; } __initcall(userfaultfd_init); |