Commit 25a033f5 authored by Guoqing Jiang's avatar Guoqing Jiang Committed by Jason Gunthorpe
Browse files

RDMA/rtrs-clt: Kill wait_for_inflight_permits 

Let's wait the inflight permits before free it.

Link: https://lore.kernel.org/r/20201217141915.56989-10-jinpu.wang@cloud.ionos.com


Signed-off-by: default avatarGuoqing Jiang <guoqing.jiang@cloud.ionos.com>
Reviewed-by: default avatarMd Haris Iqbal <haris.iqbal@cloud.ionos.com>
Signed-off-by: default avatarJack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@nvidia.com>
parent 7b47b27f

drivers/infiniband/ulp/rtrs/rtrs-clt.c

+6 −11
Original line number Diff line number Diff line
@@ -1318,6 +1318,12 @@ static int alloc_permits(struct rtrs_clt *clt) 


static void free_permits(struct rtrs_clt *clt)

{

	if (clt->permits_map) {

		size_t sz = clt->queue_depth;



		wait_event(clt->permits_wait,

			   find_first_bit(clt->permits_map, sz) >= sz);

	}

	kfree(clt->permits_map);

	clt->permits_map = NULL;

	kfree(clt->permits);
@@ -2607,19 +2613,8 @@ static struct rtrs_clt *alloc_clt(const char *sessname, size_t paths_num, 
	return clt;

}



static void wait_for_inflight_permits(struct rtrs_clt *clt)

{

	if (clt->permits_map) {

		size_t sz = clt->queue_depth;



		wait_event(clt->permits_wait,

			   find_first_bit(clt->permits_map, sz) >= sz);

	}

}



static void free_clt(struct rtrs_clt *clt)

{

	wait_for_inflight_permits(clt);

	free_permits(clt);

	free_percpu(clt->pcpu_path);

	mutex_destroy(&clt->paths_ev_mutex);