summaryrefslogtreecommitdiffstats
path: root/mm/page_alloc.c
diff options
context:
space:
mode:
Diffstat (limited to 'mm/page_alloc.c')
-rw-r--r--mm/page_alloc.c41
1 files changed, 22 insertions, 19 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index e0f2cdf9d8b1..d052abbe3063 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -882,7 +882,7 @@ retry_reserve:
*/
static int rmqueue_bulk(struct zone *zone, unsigned int order,
unsigned long count, struct list_head *list,
- int migratetype)
+ int migratetype, int cold)
{
int i;
@@ -901,7 +901,10 @@ static int rmqueue_bulk(struct zone *zone, unsigned int order,
* merge IO requests if the physical pages are ordered
* properly.
*/
- list_add(&page->lru, list);
+ if (likely(cold == 0))
+ list_add(&page->lru, list);
+ else
+ list_add_tail(&page->lru, list);
set_page_private(page, migratetype);
list = &page->lru;
}
@@ -1119,7 +1122,8 @@ again:
local_irq_save(flags);
if (!pcp->count) {
pcp->count = rmqueue_bulk(zone, 0,
- pcp->batch, &pcp->list, migratetype);
+ pcp->batch, &pcp->list,
+ migratetype, cold);
if (unlikely(!pcp->count))
goto failed;
}
@@ -1138,7 +1142,8 @@ again:
/* Allocate more to the pcp list if necessary */
if (unlikely(&page->lru == &pcp->list)) {
pcp->count += rmqueue_bulk(zone, 0,
- pcp->batch, &pcp->list, migratetype);
+ pcp->batch, &pcp->list,
+ migratetype, cold);
page = list_entry(pcp->list.next, struct page, lru);
}
@@ -1666,7 +1671,7 @@ __alloc_pages_high_priority(gfp_t gfp_mask, unsigned int order,
preferred_zone, migratetype);
if (!page && gfp_mask & __GFP_NOFAIL)
- congestion_wait(WRITE, HZ/50);
+ congestion_wait(BLK_RW_ASYNC, HZ/50);
} while (!page && (gfp_mask & __GFP_NOFAIL));
return page;
@@ -1740,8 +1745,10 @@ __alloc_pages_slowpath(gfp_t gfp_mask, unsigned int order,
* be using allocators in order of preference for an area that is
* too large.
*/
- if (WARN_ON_ONCE(order >= MAX_ORDER))
+ if (order >= MAX_ORDER) {
+ WARN_ON_ONCE(!(gfp_mask & __GFP_NOWARN));
return NULL;
+ }
/*
* GFP_THISNODE (meaning __GFP_THISNODE, __GFP_NORETRY and
@@ -1789,6 +1796,10 @@ rebalance:
if (p->flags & PF_MEMALLOC)
goto nopage;
+ /* Avoid allocations with no watermarks from looping endlessly */
+ if (test_thread_flag(TIF_MEMDIE) && !(gfp_mask & __GFP_NOFAIL))
+ goto nopage;
+
/* Try direct reclaim and then allocating */
page = __alloc_pages_direct_reclaim(gfp_mask, order,
zonelist, high_zoneidx,
@@ -1831,7 +1842,7 @@ rebalance:
pages_reclaimed += did_some_progress;
if (should_alloc_retry(gfp_mask, order, pages_reclaimed)) {
/* Wait for some write requests to complete then retry */
- congestion_wait(WRITE, HZ/50);
+ congestion_wait(BLK_RW_ASYNC, HZ/50);
goto rebalance;
}
@@ -1983,7 +1994,7 @@ void *alloc_pages_exact(size_t size, gfp_t gfp_mask)
unsigned long alloc_end = addr + (PAGE_SIZE << order);
unsigned long used = addr + PAGE_ALIGN(size);
- split_page(virt_to_page(addr), order);
+ split_page(virt_to_page((void *)addr), order);
while (used < alloc_end) {
free_page(used);
used += PAGE_SIZE;
@@ -4745,8 +4756,10 @@ void *__init alloc_large_system_hash(const char *tablename,
* some pages at the end of hash table which
* alloc_pages_exact() automatically does
*/
- if (get_order(size) < MAX_ORDER)
+ if (get_order(size) < MAX_ORDER) {
table = alloc_pages_exact(size, GFP_ATOMIC);
+ kmemleak_alloc(table, size, 1, GFP_ATOMIC);
+ }
}
} while (!table && size > PAGE_SIZE && --log2qty);
@@ -4764,16 +4777,6 @@ void *__init alloc_large_system_hash(const char *tablename,
if (_hash_mask)
*_hash_mask = (1 << log2qty) - 1;
- /*
- * If hashdist is set, the table allocation is done with __vmalloc()
- * which invokes the kmemleak_alloc() callback. This function may also
- * be called before the slab and kmemleak are initialised when
- * kmemleak simply buffers the request to be executed later
- * (GFP_ATOMIC flag ignored in this case).
- */
- if (!hashdist)
- kmemleak_alloc(table, size, 1, GFP_ATOMIC);
-
return table;
}