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kernfs: remove an unused if statement in kernfs_path_from_node_locked()

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It makes no sense to call kernfs_path_from_node_locked() with NULL buf,
and no one is doing that right now.

Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20221126111634.1994-1-thunder.leizhen@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Zhen Lei 2022-11-26 19:16:34 +08:00 committed by Greg Kroah-Hartman
parent 52af786350
commit 95b2a03478
1 changed files with 0 additions and 3 deletions
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3
fs/kernfs/dir.c
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@ -149,9 +149,6 @@ static int kernfs_path_from_node_locked(struct kernfs_node *kn_to,
if (kn_from == kn_to)
return strlcpy(buf, "/", buflen);
if (!buf)
return -EINVAL;
common = kernfs_common_ancestor(kn_from, kn_to);
if (WARN_ON(!common))
return -EINVAL;