Messages in this thread | | | Date | Thu, 21 Mar 2013 19:07:46 -0400 | From | Dave Jones <> | Subject | Re: VFS deadlock ? |
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On Thu, Mar 21, 2013 at 03:53:13PM -0700, Linus Torvalds wrote: > On Thu, Mar 21, 2013 at 3:12 PM, Dave Jones <davej@redhat.com> wrote: > > > > it's not just irda fwiw.. > > > > p1=rpc p2=rpc p1parent=net p2parent=net > > Ok, good. The only rpc/irda that has something in common is > /proc/net/, and they both use proc_mkdir() to create the directory: > > proc_irda = proc_mkdir("irda", init_net.proc_net); > ... > sn->proc_net_rpc = proc_mkdir("rpc", net->proc_net); > > so it's almost certainly that case. What I do *not* see is how we got > two different dentries for the same name in /proc. But if that > happens, then yes, they will have aliased inodes (because > proc_get_inode() will look them up by "sb,de->low_ino". > > Al, any ideas? There shouldn't be some lookup race, because that's > done under the parent inode lock. And multiple mount-points will have > different superblocks, so proc_get_inode() will give them separate > inodes. And bind mounts should have all the same dentry tree. So what > the heck am I missing?
Hmm, these also seem to have appeared around about the time I reenabled all the namespace options after Eric fixed that last proc bug.
could that be related ?
Dave
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