Commit 013bf399 authored Apr 18, 2018 by Vijayanand Jitta Committed by Gerrit - the friendly Code Review server May 13, 2018

ion: Consider ion pool pages as indirectly reclaimable

An issue is observed where mallocs are failing due to overcommit failure.
The failure happens when there is high ION page pool since ION page
pool is not considered reclaimable by the overcommit calculation code.
This change considers ion pool pages as indirectly reclaimable and thus
accounted as available memory in the overcommit calculation.

Change-Id: I8d63209b8c19286e55c407459ff124fdc58fdcc2
Signed-off-by: Vijayanand Jitta <vjitta@codeaurora.org>

parent 7b5c388d

drivers/staging/android/ion/ion_page_pool.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -48,6 +48,9 @@ static int ion_page_pool_add(struct ion_page_pool pool, struct page page)
		list_add_tail(&page->lru, &pool->low_items);
		pool->low_count++;
		}

		mod_node_page_state(page_pgdat(page), NR_INDIRECTLY_RECLAIMABLE_BYTES,
		(1 << (PAGE_SHIFT + pool->order)));
		mutex_unlock(&pool->mutex);
		return 0;
		}
		@@ -67,6 +70,8 @@ static struct page ion_page_pool_remove(struct ion_page_pool pool, bool high)
		}

		list_del(&page->lru);
		mod_node_page_state(page_pgdat(page), NR_INDIRECTLY_RECLAIMABLE_BYTES,
		-(1 << (PAGE_SHIFT + pool->order)));
		return page;
		}