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ioctl_userfaultfd.2: Update uffdio_api.features description 

There is no requirement that uffdio_api.features must be zero
for newer kernels. This field actually defines what features
space would like to enable.

Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Mike Rapoport 2017-08-14 17:51:18 +03:00 committed by Michael Kerrisk
parent 57c3bde385
commit fa744079f6
1 changed files with 1 additions and 2 deletions
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man2/ioctl_userfaultfd.2
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@ -89,7 +89,7 @@ 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) */
};
@ -668,4 +668,3 @@ operation that actually enables the desired features.
.IR Documentation/vm/userfaultfd.txt
in the Linux kernel source tree