[PATCH v6 6/6] zsmalloc: Implement writeback mechanism for zsmalloc (fix)

From: Nhat Pham
Date: Wed Nov 23 2022 - 14:17:40 EST


Use get_first_page(), and add cond_resched() in retry loop.

Signed-off-by: Nhat Pham <nphamcs@xxxxxxxxx>
Suggested-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
---
mm/zsmalloc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index e2bd41f37b5b..ab4fa17a0fad 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -2488,12 +2488,13 @@ static int zs_reclaim_page(struct zs_pool *pool, unsigned int retries)
remove_zspage(class, zspage, fullness);

spin_unlock(&pool->lock);
+ cond_resched();

/* Lock backing pages into place */
lock_zspage(zspage);

obj_idx = 0;
- page = zspage->first_page;
+ page = get_first_page(zspage);
while (1) {
handle = find_alloced_obj(class, page, &obj_idx);
if (!handle) {
--
2.30.2