add /proc/fs_cache to display vnode, path cache, page cache.
also change some bad virable name
close: #I3WWBD
Signed-off-by: mucor <mucorwang@gmail.com>
add /proc/fs_cache to display vnode, path cache, page cache.
also change some bad virable name
close: #I3WESD
Signed-off-by: mucor <mucorwang@gmail.com>