diff options
| author | Lorenzo Stoakes | 2016-10-13 01:20:14 +0100 |
|---|---|---|
| committer | Linus Torvalds | 2016-10-19 08:11:05 -0700 |
| commit | 3b913179c3fa89dd0e304193fa0c746fc0481447 (patch) | |
| tree | 9d19f80b42aa94ccdd93d926332aee9881ac439b /mm/gup.c | |
| parent | c164154f66f0c9b02673f07aa4f044f1d9c70274 (diff) | |
mm: replace get_user_pages_locked() write/force parameters with gup_flags
This removes the 'write' and 'force' use from get_user_pages_locked()
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: Michal Hocko <mhocko@suse.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/gup.c')
| -rw-r--r-- | mm/gup.c | 12 |
1 files changed, 3 insertions, 9 deletions
@@ -848,18 +848,12 @@ static __always_inline long __get_user_pages_locked(struct task_struct *tsk, * up_read(&mm->mmap_sem); */ long get_user_pages_locked(unsigned long start, unsigned long nr_pages, - int write, int force, struct page **pages, + unsigned int gup_flags, struct page **pages, int *locked) { - unsigned int flags = FOLL_TOUCH; - - if (write) - flags |= FOLL_WRITE; - if (force) - flags |= FOLL_FORCE; - return __get_user_pages_locked(current, current->mm, start, nr_pages, - pages, NULL, locked, true, flags); + pages, NULL, locked, true, + gup_flags | FOLL_TOUCH); } EXPORT_SYMBOL(get_user_pages_locked); |