diff options
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 36 |
1 files changed, 24 insertions, 12 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 68319dd20be..a9649f4b261 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1738,7 +1738,7 @@ __alloc_pages_may_oom(gfp_t gfp_mask, unsigned int order, struct page *page; /* Acquire the OOM killer lock for the zones in zonelist */ - if (!try_set_zone_oom(zonelist, gfp_mask)) { + if (!try_set_zonelist_oom(zonelist, gfp_mask)) { schedule_timeout_uninterruptible(1); return NULL; } @@ -1759,6 +1759,9 @@ __alloc_pages_may_oom(gfp_t gfp_mask, unsigned int order, /* The OOM killer will not help higher order allocs */ if (order > PAGE_ALLOC_COSTLY_ORDER) goto out; + /* The OOM killer does not needlessly kill tasks for lowmem */ + if (high_zoneidx < ZONE_NORMAL) + goto out; /* * GFP_THISNODE contains __GFP_NORETRY and we never hit this. * Sanity check for bare calls of __GFP_THISNODE, not real OOM. @@ -2052,15 +2055,23 @@ rebalance: if (page) goto got_pg; - /* - * The OOM killer does not trigger for high-order - * ~__GFP_NOFAIL allocations so if no progress is being - * made, there are no other options and retrying is - * unlikely to help. - */ - if (order > PAGE_ALLOC_COSTLY_ORDER && - !(gfp_mask & __GFP_NOFAIL)) - goto nopage; + if (!(gfp_mask & __GFP_NOFAIL)) { + /* + * The oom killer is not called for high-order + * allocations that may fail, so if no progress + * is being made, there are no other options and + * retrying is unlikely to help. + */ + if (order > PAGE_ALLOC_COSTLY_ORDER) + goto nopage; + /* + * The oom killer is not called for lowmem + * allocations to prevent needlessly killing + * innocent tasks. + */ + if (high_zoneidx < ZONE_NORMAL) + goto nopage; + } goto restart; } @@ -3634,6 +3645,9 @@ void * __init __alloc_memory_core_early(int nid, u64 size, u64 align, int i; void *ptr; + if (limit > get_max_mapped()) + limit = get_max_mapped(); + /* need to go over early_node_map to find out good range for node */ for_each_active_range_index_in_nid(i, nid) { u64 addr; @@ -4086,8 +4100,6 @@ static void __paginginit free_area_init_core(struct pglist_data *pgdat, zone_seqlock_init(zone); zone->zone_pgdat = pgdat; - zone->prev_priority = DEF_PRIORITY; - zone_pcp_init(zone); for_each_lru(l) { INIT_LIST_HEAD(&zone->lru[l].list); |