nvmet-fc: on port remove call put outside lock

Avoid calling the put routine, as it may traverse to free routines while
holding the target lock.

Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/nvme/target/fc.c b/drivers/nvme/target/fc.c
index c48c83d..6850672 100644 (file)
--- a/drivers/nvme/target/fc.c
+++ b/drivers/nvme/target/fc.c
@@ -2530,13 +2530,17 @@ nvmet_fc_remove_port(struct nvmet_port *port)
 {
        struct nvmet_fc_tgtport *tgtport = port->priv;
        unsigned long flags;
+       bool matched = false;
 
        spin_lock_irqsave(&nvmet_fc_tgtlock, flags);
        if (tgtport->port == port) {
-               nvmet_fc_tgtport_put(tgtport);
+               matched = true;
                tgtport->port = NULL;
        }
        spin_unlock_irqrestore(&nvmet_fc_tgtlock, flags);
+
+       if (matched)
+               nvmet_fc_tgtport_put(tgtport);
 }
 
 static struct nvmet_fabrics_ops nvmet_fc_tgt_fcp_ops = {