On Thu 13-10-16 01:20:14, Lorenzo Stoakes wrote: > This patch removes the write and force parameters from get_user_pages_locked() > and replaces them with a gup_flags parameter 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@xxxxxxxxx> > --- > include/linux/mm.h | 2 +- > mm/frame_vector.c | 8 +++++++- > mm/gup.c | 12 +++--------- > mm/nommu.c | 5 ++++- > 4 files changed, 15 insertions(+), 12 deletions(-) > > diff --git a/include/linux/mm.h b/include/linux/mm.h > index 6adc4bc..27ab538 100644 > --- a/include/linux/mm.h > +++ b/include/linux/mm.h > @@ -1282,7 +1282,7 @@ long get_user_pages(unsigned long start, unsigned long nr_pages, > int write, int force, struct page **pages, > struct vm_area_struct **vmas); > long get_user_pages_locked(unsigned long start, unsigned long nr_pages, > - int write, int force, struct page **pages, int *locked); > + unsigned int gup_flags, struct page **pages, int *locked); Hum, the prototype is inconsistent with e.g. __get_user_pages_unlocked() where gup_flags come after **pages argument. Actually it makes more sense to have it before **pages so that input arguments come first and output arguments second but I don't care that much. But it definitely should be consistent... Honza -- Jan Kara <jack@xxxxxxxx> SUSE Labs, CR -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
