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clone_private_mount() doesn't need to touch namespace_sem
author
Al Viro
<viro@zeniv.linux.org.uk>
Sun, 20 Nov 2016 04:23:18 +0000
(23:23 -0500)
committer
Al Viro
<viro@zeniv.linux.org.uk>
Fri, 16 Dec 2016 21:30:49 +0000
(16:30 -0500)
not for CL_PRIVATE clone_mnt()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fs/namespace.c
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diff --git
a/fs/namespace.c
b/fs/namespace.c
index
a1a04dd
..
ec726ae
100644
(file)
--- a/
fs/namespace.c
+++ b/
fs/namespace.c
@@
-1795,9
+1795,7
@@
struct vfsmount *clone_private_mount(struct path *path)
if (IS_MNT_UNBINDABLE(old_mnt))
return ERR_PTR(-EINVAL);
- down_read(&namespace_sem);
new_mnt = clone_mnt(old_mnt, path->dentry, CL_PRIVATE);
- up_read(&namespace_sem);
if (IS_ERR(new_mnt))
return ERR_CAST(new_mnt);