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authorLorenzo Stoakes <lstoakes@gmail.com>2016-10-13 03:20:16 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-10-19 18:11:43 +0300
commit768ae309a96103ed02eb1e111e838c87854d8b51 (patch)
tree59f9070c68cc87d37e5edf6439b5074a96f5d3dd /arch/x86/mm/mpx.c
parent7f23b3504a0df63b724180262c5f3f117f21bcae (diff)
downloadlinux-768ae309a96103ed02eb1e111e838c87854d8b51.tar.xz
mm: replace get_user_pages() write/force parameters with gup_flags
This removes the 'write' and 'force' from get_user_pages() and replaces them with 'gup_flags' to make the use of FOLL_FORCE explicit in callers as use of this flag can result in surprising behaviour (and hence bugs) within the mm subsystem. Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com> Acked-by: Christian König <christian.koenig@amd.com> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Acked-by: Michal Hocko <mhocko@suse.com> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86/mm/mpx.c')
-rw-r--r--arch/x86/mm/mpx.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/x86/mm/mpx.c b/arch/x86/mm/mpx.c
index 80476878eb4c..e4f800999b32 100644
--- a/arch/x86/mm/mpx.c
+++ b/arch/x86/mm/mpx.c
@@ -544,10 +544,9 @@ static int mpx_resolve_fault(long __user *addr, int write)
{
long gup_ret;
int nr_pages = 1;
- int force = 0;
- gup_ret = get_user_pages((unsigned long)addr, nr_pages, write,
- force, NULL, NULL);
+ gup_ret = get_user_pages((unsigned long)addr, nr_pages,
+ write ? FOLL_WRITE : 0, NULL, NULL);
/*
* get_user_pages() returns number of pages gotten.
* 0 means we failed to fault in and get anything,