linux-kernel - [PATCH 2/5] ioctl_userfaultfd.2: describe memory types that can be used from 4.11

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Message-Id: <1493137748-32452-3-git-send-email-rppt@linux.vnet.ibm.com>
Date:   Tue, 25 Apr 2017 19:29:05 +0300
From:   Mike Rapoport <rppt@...ux.vnet.ibm.com>
To:     "Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>
Cc:     Andrea Arcangeli <aarcange@...hat.com>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-man@...r.kernel.org, Mike Rapoport <rppt@...ux.vnet.ibm.com>
Subject: [PATCH 2/5] ioctl_userfaultfd.2: describe memory types that can be used from 4.11

Signed-off-by: Mike Rapoport <rppt@...ux.vnet.ibm.com>
---
 man2/ioctl_userfaultfd.2 | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/man2/ioctl_userfaultfd.2 b/man2/ioctl_userfaultfd.2
index 66fbfdc..78abc4d 100644
--- a/man2/ioctl_userfaultfd.2
+++ b/man2/ioctl_userfaultfd.2
@@ -169,11 +169,15 @@ field was not zero.
 (Since Linux 4.3.)
 Register a memory address range with the userfaultfd object.
 The pages in the range must be "compatible".
-In the current implementation,
-.\" According to Mike Rapoport, this will change in Linux 4.11.
+
+Up to Linux kernel 4.11,
 only private anonymous ranges are compatible for registering with
 .BR UFFDIO_REGISTER .
 
+Since Linux 4.11,
+hugetlbfs and shared memory ranges are also compatible with
+.BR UFFDIO_REGISTER .
+
 The
 .I argp
 argument is a pointer to a
-- 
1.9.1