| Message ID | 202003281643.02SGhPmY017434@sdf.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | None | expand |
On Sat, Mar 28, 2020 at 9:43 AM George Spelvin <lkml@sdf.org> wrote: > > Now that we have it, this is an example of where it helps. I didn't get copied on the cover and this series does not seem to be threaded in a way lore can find the cover either: https://lore.kernel.org/r/202003281643.02SGhPmY017434@sdf.org Mind including a short blurb about what it is and why it helps in the changelog? > > Signed-off-by: George Spelvin <lkml@sdf.org> > Cc: Dan Williams <dan.j.williams@intel.com> > Cc: Qian Cai <cai@lca.pw> > Cc: Kees Cook <keescook@chromium.org> > Cc: Michal Hocko <mhocko@suse.com> > Cc: Andrew Morton <akpm@linux-foundation.org> > Cc: linux-mm@kvack.org > --- > mm/shuffle.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/mm/shuffle.c b/mm/shuffle.c > index b3fe97fd66541..e0ed247f8d907 100644 > --- a/mm/shuffle.c > +++ b/mm/shuffle.c > @@ -135,7 +135,7 @@ void __meminit __shuffle_zone(struct zone *z) > * in the zone. > */ > j = z->zone_start_pfn + > - ALIGN_DOWN(get_random_long() % z->spanned_pages, > + ALIGN_DOWN(get_random_max(z->spanned_pages), > order_pages); > page_j = shuffle_valid_page(j, order); > if (page_j && page_j != page_i) > -- > 2.26.0 >
diff --git a/mm/shuffle.c b/mm/shuffle.c index b3fe97fd66541..e0ed247f8d907 100644 --- a/mm/shuffle.c +++ b/mm/shuffle.c @@ -135,7 +135,7 @@ void __meminit __shuffle_zone(struct zone *z) * in the zone. */ j = z->zone_start_pfn + - ALIGN_DOWN(get_random_long() % z->spanned_pages, + ALIGN_DOWN(get_random_max(z->spanned_pages), order_pages); page_j = shuffle_valid_page(j, order); if (page_j && page_j != page_i)
Now that we have it, this is an example of where it helps. Signed-off-by: George Spelvin <lkml@sdf.org> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Qian Cai <cai@lca.pw> Cc: Kees Cook <keescook@chromium.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: linux-mm@kvack.org --- mm/shuffle.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)