On Thu 17-12-20 13:52:36, Pavel Tatashin wrote:
[..]
> diff --git a/mm/vmscan.c b/mm/vmscan.c
> index 469016222cdb..d9546f5897f4 100644
> --- a/mm/vmscan.c
> +++ b/mm/vmscan.c
> @@ -3234,11 +3234,12 @@ static bool throttle_direct_reclaim(gfp_t gfp_mask,
> struct zonelist *zonelist,
> unsigned long try_to_free_pages(struct zonelist *zonelist, int order,
> gfp_t gfp_mask, nodemask_t *nodemask)
> {
> + gfp_t current_gfp_mask = current_gfp_context(gfp_mask);
> unsigned long nr_reclaimed;
> struct scan_control sc = {
> .nr_to_reclaim = SWAP_CLUSTER_MAX,
> - .gfp_mask = current_gfp_context(gfp_mask),
> - .reclaim_idx = gfp_zone(gfp_mask),
> + .gfp_mask = current_gfp_mask,
> + .reclaim_idx = gfp_zone(current_gfp_mask),
> .order = order,
> .nodemask = nodemask,
> .priority = DEF_PRIORITY,
> @@ -4158,17 +4159,18 @@ static int __node_reclaim(struct pglist_data *pgdat,
> gfp_t gfp_mask, unsigned in
> {
> /* Minimum pages needed in order to stay on node */
> const unsigned long nr_pages = 1 << order;
> + gfp_t current_gfp_mask = current_gfp_context(gfp_mask);
> struct task_struct *p = current;
> unsigned int noreclaim_flag;
> struct scan_control sc = {
> .nr_to_reclaim = max(nr_pages, SWAP_CLUSTER_MAX),
> - .gfp_mask = current_gfp_context(gfp_mask),
> + .gfp_mask = current_gfp_mask,
> .order = order,
> .priority = NODE_RECLAIM_PRIORITY,
> .may_writepage = !!(node_reclaim_mode & RECLAIM_WRITE),
> .may_unmap = !!(node_reclaim_mode & RECLAIM_UNMAP),
> .may_swap = 1,
> - .reclaim_idx = gfp_zone(gfp_mask),
> + .reclaim_idx = gfp_zone(current_gfp_mask),
> };
>
> trace_mm_vmscan_node_reclaim_begin(pgdat->node_id, order,
I was hoping we had agreed these are not necessary and they shouldn't be
touched in the patch.
--
Michal Hocko
SUSE Labs
