The patch titled
Subject: userfaultfd: buildsystem activation
has been removed from the -mm tree. Its filename was
userfaultfd-buildsystem-activation.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Subject: userfaultfd: buildsystem activation
This allows to select the userfaultfd during configuration to build it.
Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Acked-by: Pavel Emelyanov <xemul@xxxxxxxxxxxxx>
Cc: Sanidhya Kashyap <sanidhya.gatech@xxxxxxxxx>
Cc: zhang.zhanghailiang@xxxxxxxxxx
Cc: "Kirill A. Shutemov" <kirill@xxxxxxxxxxxxx>
Cc: Andres Lagar-Cavilla <andreslc@xxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxx>
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Peter Feiner <pfeiner@xxxxxxxxxx>
Cc: "Dr. David Alan Gilbert" <dgilbert@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: "Huangpeng (Peter)" <peter.huangpeng@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/Makefile | 1 +
init/Kconfig | 11 +++++++++++
2 files changed, 12 insertions(+)
diff -puN fs/Makefile~userfaultfd-buildsystem-activation fs/Makefile
--- a/fs/Makefile~userfaultfd-buildsystem-activation
+++ a/fs/Makefile
@@ -27,6 +27,7 @@ obj-$(CONFIG_ANON_INODES) += anon_inodes
obj-$(CONFIG_SIGNALFD) += signalfd.o
obj-$(CONFIG_TIMERFD) += timerfd.o
obj-$(CONFIG_EVENTFD) += eventfd.o
+obj-$(CONFIG_USERFAULTFD) += userfaultfd.o
obj-$(CONFIG_AIO) += aio.o
obj-$(CONFIG_FS_DAX) += dax.o
obj-$(CONFIG_FILE_LOCKING) += locks.o
diff -puN init/Kconfig~userfaultfd-buildsystem-activation init/Kconfig
--- a/init/Kconfig~userfaultfd-buildsystem-activation
+++ a/init/Kconfig
@@ -1576,6 +1576,17 @@ config ADVISE_SYSCALLS
applications use these syscalls, you can disable this option to save
space.
+config USERFAULTFD
+ bool "Enable userfaultfd() system call"
+ select ANON_INODES
+ default y
+ depends on MMU
+ help
+ Enable the userfaultfd() system call that allows to intercept and
+ handle page faults in userland.
+
+ If unsure, say Y.
+
config PCI_QUIRKS
default y
bool "Enable PCI quirk workarounds" if EXPERT
_
Patches currently in -mm which might be from aarcange@xxxxxxxxxx are
userfaultfd-selftest-update-userfaultfd-x86-32bit-syscall-number.patch
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