David Howells ea5b778a8b Unexport do_add_mount() and add in follow_automount(), not ->d_automount() ... Unexport do_add_mount() and make ->d_automount() return the vfsmount to be added rather than calling do_add_mount() itself. follow_automount() will then do the addition. This slightly complicates things as ->d_automount() normally wants to add the new vfsmount to an expiration list and start an expiration timer. The problem with that is that the vfsmount will be deleted if it has a refcount of 1 and the timer will not repeat if the expiration list is empty. To this end, we require the vfsmount to be returned from d_automount() with a refcount of (at least) 2. One of these refs will be dropped unconditionally. In addition, follow_automount() must get a 3rd ref around the call to do_add_mount() lest it eat a ref and return an error, leaving the mount we have open to being expired as we would otherwise have only 1 ref on it. d_automount() should also add the the vfsmount to the expiration list (by calling mnt_set_expiry()) and start the expiration timer before returning, if this mechanism is to be used. The vfsmount will be unlinked from the expiration list by follow_automount() if do_add_mount() fails. This patch also fixes the call to do_add_mount() for AFS to propagate the mount flags from the parent vfsmount. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>		2011-01-15 20:07:48 -05:00
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cache_lib.c
cache_lib.h
callback.c
callback.h
callback_proc.c
callback_xdr.c
client.c
delegation.c
delegation.h
dir.c	NFS: Use d_automount() rather than abusing follow_link()	2011-01-15 20:07:34 -05:00
direct.c
dns_resolve.c
dns_resolve.h
file.c
fscache-index.c
fscache.c
fscache.h
getroot.c
idmap.c
inode.c	NFS: Use d_automount() rather than abusing follow_link()	2011-01-15 20:07:34 -05:00
internal.h	NFS: Use d_automount() rather than abusing follow_link()	2011-01-15 20:07:34 -05:00
iostat.h
Kconfig
Makefile
mount_clnt.c
namespace.c	Unexport do_add_mount() and add in follow_automount(), not ->d_automount()	2011-01-15 20:07:48 -05:00
nfs2xdr.c
nfs3acl.c
nfs3proc.c
nfs3xdr.c
nfs4_fs.h
nfs4filelayout.c
nfs4filelayout.h
nfs4filelayoutdev.c
nfs4namespace.c
nfs4proc.c
nfs4renewd.c
nfs4state.c
nfs4xdr.c
nfsroot.c
pagelist.c
pnfs.c
pnfs.h
proc.c
read.c
super.c
symlink.c
sysctl.c
unlink.c
write.c