mm: replace get_user_pages_unlocked() write/force parameters with gup_flags

This removes the 'write' and 'force' use from get_user_pages_unlocked()
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 <[email protected]>
Reviewed-by: Jan Kara <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Lorenzo Stoakes 2016-10-13 01:20:13 +01:00 • committed by Linus Torvalds
commit c164154f66
14 changed files with 27 additions and 36 deletions

View file

@ -686,8 +686,8 @@ static ssize_t pvr2fb_write(struct fb_info *info, const char *buf,
if (!pages)
return -ENOMEM;
ret = get_user_pages_unlocked((unsigned long)buf, nr_pages, WRITE,
0, pages);
ret = get_user_pages_unlocked((unsigned long)buf, nr_pages, pages,
FOLL_WRITE);
if (ret < nr_pages) {
nr_pages = ret;