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 <rppt@xxxxxxxxxxxxxxxxxx>
---
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
-
--
2.7.4
--
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