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From: Andi Kleen <andi@firstfloor.org>
To: Sebastien Buisson <sebastien.buisson@bull.net>
Cc: Andi Kleen <andi@firstfloor.org>,
	viro@zeniv.linux.org.uk, linux-fsdevel@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH] Allow increasing the buffer-head per-CPU LRU size
Date: Mon, 7 Jul 2014 18:30:03 +0200	[thread overview]
Message-ID: <20140707163003.GA18735@two.firstfloor.org> (raw)
In-Reply-To: <53BA772C.6040506@bull.net>

> diff --git a/fs/Kconfig b/fs/Kconfig
> index c229f82..c08844c 100644
> --- a/fs/Kconfig
> +++ b/fs/Kconfig
> @@ -268,4 +268,13 @@ endif # NETWORK_FILESYSTEMS
>  source "fs/nls/Kconfig"
>  source "fs/dlm/Kconfig"
> 
> +config BH_LRU_SIZE
> +      int
> +      range 8 64
> +      default "16"

So who sets it then? 

You need it for ext4 and quota right? So this combination
should set it at least. Something like (unested)

It would be also good to audit or test other file systems if they need the
same if that's possible.

config BH_LARGE_LRU
	bool
	depends on (EXT4_FS && QUOTA)

config BH_LRU_SIZE
....
	default "16" if BH_LARGE_LRU
	default "8" if !BH_LARGE_LRU

-Andi

  reply	other threads:[~2014-07-07 16:30 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-07-04  8:38 [PATCH] Allow increasing the buffer-head per-CPU LRU size Sebastien Buisson
2014-07-05  7:44 ` Andreas Mohr
2014-07-06 16:18 ` Andi Kleen
2014-07-07 10:32   ` Sebastien Buisson
2014-07-07 16:30     ` Andi Kleen [this message]
2014-07-07 16:30       ` Andi Kleen
2014-07-07 22:29       ` Andrew Morton
2014-07-07 22:46         ` Andi Kleen
2014-07-08  6:28           ` Sebastien Buisson
2014-07-10  6:51             ` Sebastien Buisson
2014-07-10  7:07               ` Andrew Morton
2014-07-10  7:29                 ` Sebastien Buisson
2014-07-10  7:29                   ` Sebastien Buisson
2014-07-10 14:17                   ` Andi Kleen
  -- strict thread matches above, loose matches on Subject: below --
2014-06-27 12:25 Sebastien Buisson
2014-06-24 15:52 Sebastien Buisson
2014-06-25 22:16 ` Andrew Morton
2014-06-26 11:44   ` Sebastien Buisson
2014-06-26 21:37     ` Andrew Morton

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