This commit duplicates header of "userfaultfd: provide pid in userfault msg"
into linux kernel.

Signed-off-by: Alexey Perevalov <a.pereva...@samsung.com>
---
 linux-headers/linux/userfaultfd.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/linux-headers/linux/userfaultfd.h 
b/linux-headers/linux/userfaultfd.h
index 9701772..eda028c 100644
--- a/linux-headers/linux/userfaultfd.h
+++ b/linux-headers/linux/userfaultfd.h
@@ -78,6 +78,9 @@ struct uffd_msg {
                struct {
                        __u64   flags;
                        __u64   address;
+                       union {
+                               __u32   ptid;
+                       } feat;
                } pagefault;
 
                struct {
@@ -161,6 +164,7 @@ struct uffdio_api {
 #define UFFD_FEATURE_MISSING_HUGETLBFS         (1<<4)
 #define UFFD_FEATURE_MISSING_SHMEM             (1<<5)
 #define UFFD_FEATURE_EVENT_UNMAP               (1<<6)
+#define UFFD_FEATURE_THREAD_ID                 (1<<7)
        __u64 features;
 
        __u64 ioctls;
-- 
1.9.1


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