Commit 548cbba1 authored Apr 25, 2018 by Vijayanand Jitta Committed by Greg Kroah-Hartman May 06, 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.

Signed-off-by: Vijayanand Jitta <vjitta@codeaurora.org>
Acked-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 7a787c25

drivers/staging/android/ion/ion_page_pool.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -32,6 +32,9 @@ static void 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);
		}

		@@ -50,6 +53,8 @@ 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;
		}