On 5/13/22 16:54, Minchan Kim wrote:
I isolated this to Minchan Kim's "mm: fix is_pinnable_page against on cma
page". Yes, the fat finger fix is in next-20220513.
I don't have time to analyze right now, but can confirm that in the
reproducer is_pinnable_page is returning false after this change when it
previously returned true.
OK, thanks, I dropped mm-fix-is_pinnable_page-against-on-cma-page.patch
Seems like bug of the patch v5 due to change of this
if (mt & (MIGRATE_CMA | MIGRATE_ISOLATE))
The migration type is not bit type so it shold be
if (mt == MIGRATE_CMA || mt == MIGRATE_ISOLATE)
Sorry for leading you astray by recommending the bitwise OR, Minchan.
I overlooked that point even though it was right in front of me.
thanks,
--
John Hubbard
NVIDIA
