Merge tag 'slab-for-6.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab

torvalds · torvalds · commit 46f0cba31ccc · 2023-01-19T12:24:39.000-08:00
Pull slab fix from Vlastimil Babka:
 "Just a single fix, since the lkp report originally for a slub-tiny
  commit ended up being a gcov/compiler bug:

   - periodically resched in SLAB's drain_freelist(), by David Rientjes"

* tag 'slab-for-6.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
  mm, slab: periodically resched in drain_freelist()
diff --git a/mm/slab.c b/mm/slab.c
@@ -2211,6 +2211,8 @@ static int drain_freelist(struct kmem_cache *cache,
 		raw_spin_unlock_irq(&n->list_lock);
 		slab_destroy(cache, slab);
 		nr_freed++;
+
+		cond_resched();
 	}
 out:
 	return nr_freed;

Original file line number	Diff line number	Diff line change
`@@ -2211,6 +2211,8 @@ static int drain_freelist(struct kmem_cache *cache,`
`2211`	`2211`	`raw_spin_unlock_irq(&n->list_lock);`
`2212`	`2212`	`slab_destroy(cache, slab);`
`2213`	`2213`	`nr_freed++;`
	`2214`	`+`
	`2215`	`+ cond_resched();`
`2214`	`2216`	`}`
`2215`	`2217`	`out:`
`2216`	`2218`	`return nr_freed;`