Re: [PATCH -V3 1/1] cgroup: Add inotify event on change tasks file (fork, exit, move pid from file)

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On Fri, May 04, 2012 at 09:24:40AM +0400, Alexander Nikiforov wrote:
> Hi Eric,
> 
> I had try to implement with FSNOTIFY_EVENT_PATH. But it's pretty
> hard to obtain struct path without full chain of the sys_open()
> or may be I don't know some simple way. I'll spend some more time on
> this, but for now I have no idea how to do it. If you have some
> please share them.

Hmm... we have dentry from cfe->dentry and we can either use the first
vfsmount from sb->s_mounts or all of them (ie. generate event on each
vfsmount).  It's kinda silly either way tho.  Eric, it might be a good
idea to provide generic helper for virtual filesystems which want to
generate superblock-wide events?

Thanks.

-- 
tejun
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