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nvme: open code nvme_put_ns_from_disk in nvme_ns_head_chr_ioctl

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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 <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
This commit is contained in:
Christoph Hellwig 2021-05-19 09:02:59 +02:00
parent 97ba6931ba
commit f423c85cd3
1 changed files with 5 additions and 7 deletions
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12
drivers/nvme/host/ioctl.c
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@ -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 */