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>

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,