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block/rnbd-srv: Protect dev session sysfs removal 

Since the removal of the session sysfs can also be called from the
function destroy_sess, there is a need to protect the call from the
function rnbd_srv_sess_dev_force_close

Fixes: 786998050c ("block/rnbd-srv: close a mapped device from server side.")
Signed-off-by: Md Haris Iqbal <haris.iqbal@cloud.ionos.com>
Reviewed-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Md Haris Iqbal 2020-12-10 11:18:22 +01:00 committed by Jens Axboe
parent 46067844ef
commit 87019e7d99
1 changed files with 2 additions and 1 deletions
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3
drivers/block/rnbd/rnbd-srv.c
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@ -338,9 +338,10 @@ static int rnbd_srv_link_ev(struct rtrs_srv *rtrs,
void rnbd_srv_sess_dev_force_close(struct rnbd_srv_sess_dev *sess_dev)
{
mutex_lock(&sess_dev->sess->lock);
rnbd_srv_destroy_dev_session_sysfs(sess_dev);
mutex_unlock(&sess_dev->sess->lock);
sess_dev->keep_id = true;
}
static int process_msg_close(struct rtrs_srv *rtrs,