[PATCH 1/7] nvme: open code nvme_put_ns_from_disk in nvme_ns_head_chr_ioctl
From: Christoph Hellwig <hch@lst.de>
Date: 2021-05-20 05:45:09
Subsystem:
nvm express driver, the rest · Maintainers:
Keith Busch, Jens Axboe, Christoph Hellwig, Sagi Grimberg, Linus Torvalds
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> --- 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 */
--
2.30.2
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