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-rw-r--r--fs/userfaultfd.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
index 5fd4d846691f..665bf7a930b2 100644
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -178,7 +178,8 @@ static inline void msg_init(struct uffd_msg *msg)
static inline struct uffd_msg userfault_msg(unsigned long address,
unsigned int flags,
- unsigned long reason)
+ unsigned long reason,
+ unsigned int features)
{
struct uffd_msg msg;
msg_init(&msg);
@@ -202,6 +203,8 @@ static inline struct uffd_msg userfault_msg(unsigned long address,
* write protect fault.
*/
msg.arg.pagefault.flags |= UFFD_PAGEFAULT_FLAG_WP;
+ if (features & UFFD_FEATURE_THREAD_ID)
+ msg.arg.pagefault.ptid = task_pid_vnr(current);
return msg;
}
@@ -422,7 +425,8 @@ int handle_userfault(struct vm_fault *vmf, unsigned long reason)
init_waitqueue_func_entry(&uwq.wq, userfaultfd_wake_function);
uwq.wq.private = current;
- uwq.msg = userfault_msg(vmf->address, vmf->flags, reason);
+ uwq.msg = userfault_msg(vmf->address, vmf->flags, reason,
+ ctx->features);
uwq.ctx = ctx;
uwq.waken = false;