Embed a struct path into struct nameidata instead of nd->{dentry,mnt}
authorJan Blunck <jblunck@suse.de>
Fri, 15 Feb 2008 03:34:32 +0000 (19:34 -0800)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Fri, 15 Feb 2008 05:13:33 +0000 (21:13 -0800)
commit4ac9137858e08a19f29feac4e1f4df7c268b0ba5
treef5b5d84fd12fcc2b0ba0e7ce1a79ff381ad8f5dd
parentc5e725f33b733a77de622e91b6ba5645fcf070be
Embed a struct path into struct nameidata instead of nd->{dentry,mnt}

This is the central patch of a cleanup series. In most cases there is no good
reason why someone would want to use a dentry for itself. This series reflects
that fact and embeds a struct path into nameidata.

Together with the other patches of this series
- it enforced the correct order of getting/releasing the reference count on
  <dentry,vfsmount> pairs
- it prepares the VFS for stacking support since it is essential to have a
  struct path in every place where the stack can be traversed
- it reduces the overall code size:

without patch series:
   text    data     bss     dec     hex filename
5321639  858418  715768 6895825  6938d1 vmlinux

with patch series:
   text    data     bss     dec     hex filename
5320026  858418  715768 6894212  693284 vmlinux

This patch:

Switch from nd->{dentry,mnt} to nd->path.{dentry,mnt} everywhere.

[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: fix cifs]
[akpm@linux-foundation.org: fix smack]
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
47 files changed:
arch/alpha/kernel/osf_sys.c
arch/mips/kernel/sysirix.c
arch/parisc/hpux/sys_hpux.c
arch/powerpc/platforms/cell/spufs/inode.c
arch/sparc64/solaris/fs.c
arch/um/drivers/mconsole_kern.c
drivers/md/dm-table.c
drivers/mtd/mtdsuper.c
fs/afs/mntpt.c
fs/autofs4/root.c
fs/block_dev.c
fs/cifs/cifs_dfs_ref.c
fs/coda/pioctl.c
fs/compat.c
fs/configfs/symlink.c
fs/dquot.c
fs/ecryptfs/dentry.c
fs/ecryptfs/inode.c
fs/ecryptfs/main.c
fs/exec.c
fs/ext3/super.c
fs/ext4/super.c
fs/gfs2/ops_fstype.c
fs/inotify_user.c
fs/namei.c
fs/namespace.c
fs/nfs/namespace.c
fs/nfs/nfs4proc.c
fs/nfsctl.c
fs/nfsd/export.c
fs/nfsd/nfs4recover.c
fs/nfsd/nfs4state.c
fs/open.c
fs/proc/base.c
fs/proc/proc_sysctl.c
fs/reiserfs/super.c
fs/stat.c
fs/utimes.c
fs/xattr.c
fs/xfs/linux-2.6/xfs_ioctl.c
include/linux/namei.h
kernel/audit_tree.c
kernel/auditfilter.c
net/sunrpc/rpc_pipe.c
net/unix/af_unix.c
security/selinux/hooks.c
security/smack/smack_lsm.c