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bury struct proc_ns in fs/proc

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a) make get_proc_ns() return a pointer to struct ns_common
b) mirror ns_ops in dentry->d_fsdata of ns dentries, so that
is_mnt_ns_file() could get away with fewer dereferences.

That way struct proc_ns becomes invisible outside of fs/proc/*.c

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2014-11-01 03:13:17 -04:00
parent 33c429405a
commit f77c80142e
6 changed files with 15 additions and 27 deletions
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4
net/core/net_namespace.c
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@@ -337,7 +337,6 @@ EXPORT_SYMBOL_GPL(__put_net);
struct net *get_net_ns_by_fd(int fd)
{
struct proc_ns *ei;
struct file *file;
struct ns_common *ns;
struct net *net;
@@ -346,8 +345,7 @@ struct net *get_net_ns_by_fd(int fd)
if (IS_ERR(file))
return ERR_CAST(file);
ei = get_proc_ns(file_inode(file));
ns = ei->ns;
ns = get_proc_ns(file_inode(file));
if (ns->ops == &netns_operations)
net = get_net(container_of(ns, struct net, ns));
else