[PATCH 1/2] ioctl_userfaultfd.2: update uffdio_api.features description
From: Mike Rapoport <hidden>
Date: 2017-08-14 14:51:18
Subsystem:
the rest · Maintainer:
Linus Torvalds
Possibly related (same subject, not in this thread)
- 2017-08-16 · Re: [PATCH 1/2] ioctl_userfaultfd.2: update uffdio_api.features description · Michael Kerrisk (man-pages) <hidden>
There is no requirement that uffdio_api.features must be zero for newer kernels. This field actually defines what features user space would like to enable. Signed-off-by: Mike Rapoport <redacted> --- man2/ioctl_userfaultfd.2 | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/man2/ioctl_userfaultfd.2 b/man2/ioctl_userfaultfd.2
index f97b3ef..14260fc 100644
--- a/man2/ioctl_userfaultfd.2
+++ b/man2/ioctl_userfaultfd.2@@ -86,7 +86,7 @@ structure, defined as: struct uffdio_api { __u64 api; /* Requested API version (input) */ - __u64 features; /* Currently must be zero (input) */ + __u64 features; /* Requested features (input/output) */ __u64 ioctls; /* Available ioctl() operations (output) */ };
@@ -665,4 +665,3 @@ operation that actually enables the desired features. .IR Documentation/vm/userfaultfd.txt in the Linux kernel source tree