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From: Nick Piggin <npiggin@kernel.dk>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: npiggin@kernel.dk, linux-kernel@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [patch 03/35] mm: implement per-zone shrinker
Date: Tue, 19 Oct 2010 16:33:20 +1100	[thread overview]
Message-ID: <20101019053320.GA7470@amd> (raw)
In-Reply-To: <20101019134345.A1E9.A69D9226@jp.fujitsu.com>

Hi,

On Tue, Oct 19, 2010 at 01:49:12PM +0900, KOSAKI Motohiro wrote:
> Hi
> 
> > Index: linux-2.6/include/linux/mm.h
> > ===================================================================
> > --- linux-2.6.orig/include/linux/mm.h	2010-10-19 14:19:40.000000000 +1100
> > +++ linux-2.6/include/linux/mm.h	2010-10-19 14:36:48.000000000 +1100
> > @@ -997,6 +997,10 @@
> >  /*
> >   * A callback you can register to apply pressure to ageable caches.
> >   *
> > + * 'shrink_zone' is the new shrinker API. It is to be used in preference
> > + * to 'shrink'. One must point to a shrinker function, the other must
> > + * be NULL. See 'shrink_slab' for details about the shrink_zone API.
> 
...

> Now we decided to don't remove old (*shrink)() interface and zone unaware
> slab users continue to use it. so why do we need global argument?
> If only zone aware shrinker user (*shrink_zone)(), we can remove it.
> 
> Personally I think we should remove it because a removing makes a clear
> message that all shrinker need to implement zone awareness eventually.

I agree, I do want to remove the old API, but it's easier to merge if
I just start by adding the new API. It is split out from my previous
patch which does convert all users of the API. When this gets merged, I
will break those out and send them via respective maintainers, then
remove the old API when they're all converted upstream.

Thanks,
Nick


  reply	other threads:[~2010-10-19  5:33 UTC|newest]

Thread overview: 70+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-10-19  3:42 [patch 00/35] my inode scaling series for review npiggin
2010-10-19  3:42 ` [patch 01/35] bit_spinlock: add required includes npiggin
2010-10-19  3:42 ` [patch 02/35] kernel: add bl_list npiggin
2010-10-19  3:42 ` [patch 03/35] mm: implement per-zone shrinker npiggin
2010-10-19  4:49   ` KOSAKI Motohiro
2010-10-19  5:33     ` Nick Piggin [this message]
2010-10-19  5:40       ` KOSAKI Motohiro
2010-10-19  3:42 ` [patch 04/35] vfs: convert inode and dentry caches to " npiggin
2010-10-19  3:42 ` [patch 05/35] fs: icache lock s_inodes list npiggin
2010-10-19  3:42 ` [patch 06/35] fs: icache lock inode hash npiggin
2010-10-19  3:42 ` [patch 07/35] fs: icache lock i_state npiggin
2010-10-19 10:47   ` Miklos Szeredi
2010-10-19 17:06     ` Peter Zijlstra
2010-10-19  3:42 ` [patch 08/35] fs: icache lock i_count npiggin
2010-10-19 10:16   ` Boaz Harrosh
2010-10-20  2:14     ` Nick Piggin
2010-10-19  3:42 ` [patch 09/35] fs: icache lock lru/writeback lists npiggin
2010-10-19  3:42 ` [patch 10/35] fs: icache atomic inodes_stat npiggin
2010-10-19  3:42 ` [patch 11/35] fs: icache lock inode state npiggin
2010-10-19  3:42 ` [patch 12/35] fs: inode atomic last_ino, iunique lock npiggin
2010-10-19  3:42 ` [patch 13/35] fs: icache remove inode_lock npiggin
2010-10-19  3:42 ` [patch 14/35] fs: icache factor hash lock into functions npiggin
2010-10-19  3:42 ` [patch 15/35] fs: icache per-bucket inode hash locks npiggin
2010-10-19  3:42 ` [patch 16/35] fs: icache lazy inode lru npiggin
2010-10-19  3:42 ` [patch 17/35] fs: icache RCU free inodes npiggin
2010-10-19  3:42 ` [patch 18/35] fs: avoid inode RCU freeing for pseudo fs npiggin
2010-10-19  3:42 ` [patch 19/35] fs: icache remove redundant i_sb_list umount locking npiggin
2010-10-20 12:46   ` Al Viro
2010-10-20 13:03     ` Nick Piggin
2010-10-20 13:27       ` Al Viro
2010-10-19  3:42 ` [patch 20/35] fs: icache rcu walk for i_sb_list npiggin
2010-10-19  3:42 ` [patch 21/35] fs: icache per-cpu nr_inodes, non-atomic nr_unused counters npiggin
2010-10-19  3:42 ` [patch 22/35] fs: icache per-cpu last_ino allocator npiggin
2010-10-19  3:42 ` [patch 23/35] fs: icache use per-CPU lists and locks for sb inode lists npiggin
2010-10-19 15:33   ` Miklos Szeredi
2010-10-20  2:37     ` Nick Piggin
2010-10-19  3:42 ` [patch 24/35] fs: icache use RCU to avoid locking in hash lookups npiggin
2010-10-19  3:42 ` [patch 25/35] fs: icache reduce some locking overheads npiggin
2010-10-19  3:42 ` [patch 26/35] fs: icache alloc anonymous inode allocation npiggin
2010-10-19 15:50   ` Miklos Szeredi
2010-10-20  2:38     ` Nick Piggin
2010-10-19 16:33   ` Christoph Hellwig
2010-10-20  3:07     ` Nick Piggin
2010-10-19  3:42 ` [patch 27/35] fs: icache split IO and LRU lists npiggin
2010-10-19 16:12   ` Miklos Szeredi
2010-10-20  2:41     ` Nick Piggin
2010-10-19  3:42 ` [patch 28/35] fs: icache split writeback and lru locks npiggin
2010-10-19  3:42 ` [patch 29/35] fs: icache per-bdi writeback list locking npiggin
2010-10-19  3:42 ` [patch 30/35] fs: icache lazy LRU avoid LRU locking after IO operation npiggin
2010-10-19  3:42 ` [patch 31/35] fs: icache per-zone inode LRU npiggin
2010-10-19 12:38   ` Dave Chinner
2010-10-20  2:35     ` Nick Piggin
2010-10-20  3:12       ` Nick Piggin
2010-10-20  9:43         ` Dave Chinner
2010-10-20 10:02           ` Nick Piggin
2010-10-20  3:14     ` KOSAKI Motohiro
2010-10-20  3:20       ` Nick Piggin
2010-10-20  3:29         ` KOSAKI Motohiro
2010-10-20 10:19         ` Dave Chinner
2010-10-20 10:41           ` Nick Piggin
2010-10-19  3:42 ` [patch 32/35] fs: icache minimise I_FREEING latency npiggin
2010-10-19  3:42 ` [patch 33/35] fs: icache introduce inode_get/inode_get_ilock npiggin
2010-10-19 10:17   ` Boaz Harrosh
2010-10-20  2:17     ` Nick Piggin
2010-10-19  3:42 ` [patch 34/35] fs: inode rename i_count to i_refs npiggin
2010-10-19  3:42 ` [patch 35/35] fs: icache document more lock orders npiggin
2010-10-19 16:22 ` [patch 00/35] my inode scaling series for review Christoph Hellwig
2010-10-20  3:05   ` Nick Piggin
2010-10-20 13:14 ` Al Viro
2010-10-20 13:59   ` Nick Piggin

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