loop alex On Thu, Aug 31, 2023 at 8:16 PM Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote: > > On Thu, Aug 31, 2023 at 06:52:52PM +0800, zhaoyang.huang wrote: > > From: Zhaoyang Huang <zhaoyang.huang@xxxxxxxxxx> > > > > There is no explicit gfp flags to let the allocation skip zero > > operation when CONFIG_INIT_ON_ALLOC_DEFAULT_ON=y. I would like to make > > __GFP_SKIP_ZERO be visible even if kasan is not configured. > > This bypasses a security feature so you're going to have to do a little > better than "I want it". Thanks for pointing this out. What I want to do is to give the user a way to exempt some types of pages from being zeroed, which could help on performance issues. Could we have the most safety concern admin use INIT_ON_FREE while the less concerned use INIT_ON_ALLOC & __GFP_SKIP_ZERO as a light version method? > > > Signed-off-by: Zhaoyang Huang <zhaoyang.huang@xxxxxxxxxx> > > --- > > include/linux/gfp_types.h | 3 +-- > > 1 file changed, 1 insertion(+), 2 deletions(-) > > mode change 100644 => 100755 include/linux/gfp_types.h > > What is this garbage? Header files should not be executable. sorry for that, will remove
