From f423c85cd392241f1521887b1396038cd1e4c68e Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 19 May 2021 09:02:59 +0200 Subject: [PATCH] nvme: open code nvme_put_ns_from_disk in nvme_ns_head_chr_ioctl nvme_ns_head_chr_ioctl is always used on multipath nodes, so just call srcu_read_unlock and consolidate the two unlock paths. Signed-off-by: Christoph Hellwig Reviewed-by: Keith Busch Reviewed-by: Sagi Grimberg --- drivers/nvme/host/ioctl.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/drivers/nvme/host/ioctl.c b/drivers/nvme/host/ioctl.c index 9557ead02de1..0341767ff2e7 100644 --- a/drivers/nvme/host/ioctl.c +++ b/drivers/nvme/host/ioctl.c @@ -419,21 +419,19 @@ long nvme_ns_head_chr_ioctl(struct file *file, unsigned int cmd, container_of(cdev, struct nvme_ns_head, cdev); void __user *argp = (void __user *)arg; struct nvme_ns *ns; - int srcu_idx, ret; + int srcu_idx, ret = -EWOULDBLOCK; srcu_idx = srcu_read_lock(&head->srcu); ns = nvme_find_path(head); - if (!ns) { - srcu_read_unlock(&head->srcu, srcu_idx); - return -EWOULDBLOCK; - } + if (!ns) + goto out_unlock; if (is_ctrl_ioctl(cmd)) return nvme_ns_head_ctrl_ioctl(ns, cmd, argp, head, srcu_idx); ret = nvme_ns_ioctl(ns, cmd, argp); - nvme_put_ns_from_disk(head, srcu_idx); - +out_unlock: + srcu_read_unlock(&head->srcu, srcu_idx); return ret; } #endif /* CONFIG_NVME_MULTIPATH */