get rid of s_files and files_lock
authorAl Viro <viro@zeniv.linux.org.uk>
Fri, 4 Oct 2013 15:06:42 +0000 (11:06 -0400)
committerAl Viro <viro@zeniv.linux.org.uk>
Sat, 9 Nov 2013 05:16:20 +0000 (00:16 -0500)
The only thing we need it for is alt-sysrq-r (emergency remount r/o)
and these days we can do just as well without going through the
list of files.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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