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>
1.remove redundant headfile in kernel, such as:
compiler.h;debug.h;automount.h;inode.h;syslog.h;net.h;
2.split fs.h to file.h and driver.h
3.move vnode.h and path_cache.h to vfs/include
4.remove redundant interface and defines
close: #I3RTNR
Signed-off-by: mucor <mucorwang@gmail.com>
PathCacheMemoryDump miscalculate the RAM usage of PathCache for not
counting the name field of PathCache, which is allocated with PathCache
Close #I3OBXY