On 1/22/20 2:05 PM, Andrew Morton wrote:
On Thu, 23 Jan 2020 03:39:50 +0800 Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx> wrote:Since commit a49bd4d71637 ("mm, numa: rework do_pages_move"), the semantic of move_pages() was changed to return the number of non-migrated pages (failed to migration) and the call would be aborted immediately if migrate_pages() returns positive value. But it didn't report the number of pages that we even haven't attempted to migrate. So, fix it by including non-attempted pages in the return value. Fixes: a49bd4d71637 ("mm, numa: rework do_pages_move") Suggested-by: Michal Hocko <mhocko@xxxxxxxx> Cc: Wei Yang <richardw.yang@xxxxxxxxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> [4.17+] Signed-off-by: Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx> --- The patch is based off Wei Yang's cleanup patchset: https://lore.kernel.org/linux-mm/20200122011647.13636-1-richardw.yang@xxxxxxxxxxxxxxx/T/#tCan you please redo this so it is applicable to current mainline? That will make it more easily backportable and this fix is higher priority than a set of cleanups.
Sure.
