Re: [PATCH] vfs: dont chain pipe/anon/socket on superblock s_inodes list

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To: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Subject: Re: [PATCH] vfs: dont chain pipe/anon/socket on superblock s_inodes list
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Tue, 26 Jul 2011 05:42:04 -0400
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>, Tim Chen <tim.c.chen@xxxxxxxxxxxxxxx>, Al Viro <viro@xxxxxxxxxxxxxxxxxx>, David Miller <davem@xxxxxxxxxxxxx>, Andi Kleen <andi@xxxxxxxxxxxxxx>, Matthew Wilcox <matthew@xxxxxx>, Anton Blanchard <anton@xxxxxxxxx>, npiggin@xxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, netdev <netdev@xxxxxxxxxxxxxxx>
In-reply-to: <1311672994.2355.17.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC>
User-agent: Mutt/1.5.21 (2010-09-15)

On Tue, Jul 26, 2011 at 11:36:34AM +0200, Eric Dumazet wrote:
> [PATCH v2] vfs: dont chain pipe/anon/socket on superblock s_inodes list
> 
> Workloads using pipes and sockets hit inode_sb_list_lock contention.
> 
> superblock s_inodes list is needed for quota, dirty, pagecache and
> fsnotify management. pipe/anon/socket fs are clearly not candidates for
> these.
> 
> Signed-off-by: Eric Dumazet <eric.dumazet@xxxxxxxxx>

Looks good to me,

Reviewed-by: Christoph Hellwig <hch@xxxxxx>

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Follow-Ups:
- Re: [PATCH] vfs: dont chain pipe/anon/socket on superblock s_inodes list
  - From: Eric Dumazet

References:
- Re: [Patch] VFS : mount lock scalability for files systems without mount point (WAS vfsmount lock issues on very large ppc64 box)
  - From: Al Viro
- Re: [Patch] VFS : mount lock scalability for files systems without mount point (WAS vfsmount lock issues on very large ppc64 box)
  - From: Tim Chen
- Re: [Patch] VFS : mount lock scalability for files systems without mount point (WAS vfsmount lock issues on very large ppc64 box)
  - From: Christoph Hellwig
- Re: [Patch] VFS : mount lock scalability for files systems without mount point (WAS vfsmount lock issues on very large ppc64 box)
  - From: Tim Chen
- Re: [Patch] VFS : mount lock scalability for files systems without mount point (WAS vfsmount lock issues on very large ppc64 box)
  - From: Al Viro
- Re: [Patch] VFS : mount lock scalability for files systems without mount point (WAS vfsmount lock issues on very large ppc64 box)
  - From: Tim Chen
- Re: [Patch] VFS : mount lock scalability for files systems without mount point (WAS vfsmount lock issues on very large ppc64 box)
  - From: Eric Dumazet
- [PATCH] vfs: dont chain pipe/anon/socket on superblock s_inodes list
  - From: Eric Dumazet
- Re: [PATCH] vfs: dont chain pipe/anon/socket on superblock s_inodes list
  - From: Christoph Hellwig
- Re: [PATCH] vfs: dont chain pipe/anon/socket on superblock s_inodes list
  - From: Eric Dumazet

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