On 16.06.23 11:21, lipeifeng@xxxxxxxx wrote:
From: lipeifeng <lipeifeng@xxxxxxxx> Some of shrinkers during shrink_slab would enter synchronous-wait due to lock or other reasons, which would causes kswapd or direct_reclaim to be blocked. This patch export shrink_slab so that it can be called in drivers which can shrink memory independently. Signed-off-by: lipeifeng <lipeifeng@xxxxxxxx> --- mm/vmscan.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index 6d0cd2840cf0..2e54fa52e7ec 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1043,7 +1043,7 @@ static unsigned long shrink_slab_memcg(gfp_t gfp_mask, int nid, * * Returns the number of reclaimed slab objects. */ -static unsigned long shrink_slab(gfp_t gfp_mask, int nid, +unsigned long shrink_slab(gfp_t gfp_mask, int nid, struct mem_cgroup *memcg, int priority) { @@ -1087,6 +1087,7 @@ static unsigned long shrink_slab(gfp_t gfp_mask, int nid, cond_resched(); return freed; } +EXPORT_SYMBOL_GPL(shrink_slab);static unsigned long drop_slab_node(int nid){
It feels like something we don't want arbitrary drivers to call. Unrelated to that, this better be sent along with actual driver usage. -- Cheers, David / dhildenb
