Messages in this thread | | | Date | Mon, 4 Aug 2014 09:57:31 +0100 | From | Al Viro <> | Subject | Re: [PATCH - V2] VFS: allow ->d_manage() to declare -EISDIR in rcu_walk mode. |
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On Mon, Aug 04, 2014 at 05:06:29PM +1000, NeilBrown wrote: > > In REF-walk mode, ->d_manage can return -EISDIR to indicate > that the dentry is not really a mount trap (or even a mount point) > and that any mounts or any DCACHE_NEED_AUTOMOUNT flag should be > ignored. > > RCU-walk mode doesn't currently support this, so if there is a dentry > with DCACHE_NEED_AUTOMOUNT set but which shouldn't be a mount-trap, > lookup_fast() will always drop in REF-walk mode. > > With this patch, an -EISDIR from ->d_manage will always cause mounts > and automounts to be ignored, both in REF-walk and RCU-walk.
In queue. Right now I'm trying to linearize the damn acct fixes from late April, needed to get Eric's umount-on-rmdir series into the mix safely ;-/ Hopefully I'll have something pushable by Tuesday; your patch definitely will be in the pile.
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