Re: [PATCH 06/12] inode: Make unused inode LRU per superblock

xfs

Re: [PATCH 06/12] inode: Make unused inode LRU per superblock

To:	Dave Chinner <david@xxxxxxxxxxxxx>
Subject:	Re: [PATCH 06/12] inode: Make unused inode LRU per superblock
From:	Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Date:	Sat, 4 Jun 2011 01:25:52 +0100
Cc:	linux-fsdevel@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, xfs@xxxxxxxxxxx
In-reply-to:	<1306998067-27659-7-git-send-email-david@xxxxxxxxxxxxx>
References:	<1306998067-27659-1-git-send-email-david@xxxxxxxxxxxxx> <1306998067-27659-7-git-send-email-david@xxxxxxxxxxxxx>
Sender:	Al Viro <viro@xxxxxxxxxxxxxxxx>
User-agent:	Mutt/1.5.21 (2010-09-15)

On Thu, Jun 02, 2011 at 05:01:01PM +1000, Dave Chinner wrote:
> From: Dave Chinner <dchinner@xxxxxxxxxx>
> 
> The inode unused list is currently a global LRU. This does not match
> the other global filesystem cache - the dentry cache - which uses
> per-superblock LRU lists. Hence we have related filesystem object
> types using different LRU reclaimation schemes.
> 
> To enable a per-superblock filesystem cache shrinker, both of these
> caches need to have per-sb unused object LRU lists. Hence this patch
> converts the global inode LRU to per-sb LRUs.
> 
> The patch only does rudimentary per-sb propotioning in the shrinker
> infrastructure, as this gets removed when the per-sb shrinker
> callouts are introduced later on.

What protects s_nr_inodes_unused?

[More with this subject...]

<Prev in Thread]	Current Thread	[Next in Thread>
[PATCH 0/12] Per superblock cache reclaim, Dave Chinner [PATCH 02/12] vmscan: shrinker->nr updates race and go wrong, Dave Chinner Re: [PATCH 02/12] vmscan: shrinker->nr updates race and go wrong, KOSAKI Motohiro Re: [PATCH 02/12] vmscan: shrinker->nr updates race and go wrong, Dave Chinner Re: [PATCH 02/12] vmscan: shrinker->nr updates race and go wrong, KOSAKI Motohiro [PATCH 06/12] inode: Make unused inode LRU per superblock, Dave Chinner Re: [PATCH 06/12] inode: Make unused inode LRU per superblock, Al Viro <= Re: [PATCH 06/12] inode: Make unused inode LRU per superblock, Dave Chinner [PATCH 01/12] vmscan: add shrink_slab tracepoints, Dave Chinner Re: [PATCH 01/12] vmscan: add shrink_slab tracepoints, KOSAKI Motohiro Re: [PATCH 01/12] vmscan: add shrink_slab tracepoints, Dave Chinner [PATCH 05/12] inode: convert inode_stat.nr_unused to per-cpu counters, Dave Chinner [PATCH 03/12] vmscan: reduce wind up shrinker->nr when shrinker can't do work, Dave Chinner Re: [PATCH 03/12] vmscan: reduce wind up shrinker->nr when shrinker can't do work, KOSAKI Motohiro Re: [PATCH 03/12] vmscan: reduce wind up shrinker->nr when shrinker can't do work, Dave Chinner Re: [PATCH 03/12] vmscan: reduce wind up shrinker->nr when shrinker can't do work, KOSAKI Motohiro [PATCH 04/12] vmscan: add customisable shrinker batch size, Dave Chinner

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