tree 7b2607f0d726c3e14976564fde0f6a570f150625
parent a2f20c7c274b6241767330c902b3111b9326d901
author Ian Kent <raven@themaw.net> 1151239727 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> 1151254878 -0700

[PATCH] autofs4: need to invalidate children on tree mount expire

I've found a case where invalid dentrys in a mount tree, waiting to be
cleaned up by d_invalidate, prevent the expected expire.

In this case dentrys created during a lookup for which a mount fails or has
no entry in the mount map contribute to the d_count of the parent dentry.
These dentrys may not be invalidated prior to comparing the interanl usage
count of valid autofs dentrys against the dentry d_count which makes a
mount tree appear busy so it doesn't expire.

Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>