In shrink_slab(), it directly goes to 'out' label only when it can't get the lock of shrinker_rwsew. In this case, it doesn't do the real work of shrinking slab, so we don't need trigger a reschedule by cond_resched(). Signed-off-by: Xianting Tian <tian.xianting@xxxxxxx> --- mm/vmscan.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index 466fc3144..676e97b28 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -687,8 +687,9 @@ static unsigned long shrink_slab(gfp_t gfp_mask, int nid, } up_read(&shrinker_rwsem); -out: + cond_resched(); +out: return freed; } -- 2.17.1
