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Subject: Re: [Patch] VFS : mount lock scalability for files systems without
 mount point   (WAS vfsmount lock issues on very large ppc64 box)
From: Eric Dumazet <eric.dumazet@gmail.com>
To: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Al Viro <viro@ZenIV.linux.org.uk>, Christoph Hellwig <hch@infradead.org>,
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Date: Tue, 26 Jul 2011 08:00:13 +0200
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Le lundi 25 juillet 2011 à 16:22 -0700, Tim Chen a écrit :
> On Mon, 2011-07-25 at 23:51 +0100, Al Viro wrote:
> 
> > It's mostly merged in mainline already...  BTW, you forgot to export
> > that sucker - mtdchar can be modular.
> 
> Thanks for fixing it up and merging it.
> 

Next step is to not chain pipes/sockets into superblock s_inodes list

inode_sb_list_add()/inode_sb_list_del() is the very last contention
point because of spin_lock(&inode_sb_list_lock);