From: William Lee Irwin III <wli@holomorphy.com>
To: Nikita Danilov <nikita@clusterfs.com>
Cc: Andrea Arcangeli <andrea@suse.de>, Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org, Robert_Hentosh@Dell.com,
Con Kolivas <kernel@kolivas.org>
Subject: Re: [PATCH][1/2] adjust dirty threshold for lowmem-only mappings
Date: Sat, 25 Dec 2004 19:16:20 -0800 [thread overview]
Message-ID: <20041226031620.GB771@holomorphy.com> (raw)
In-Reply-To: <m1652q2fz1.fsf@clusterfs.com>
William Lee Irwin III <wli@holomorphy.com> writes:
[...]
>> Lifting the artificial lowmem restrictions on blockdev mappings
>> (thereby nuking mapping->gfp_mask altogether) would resolve a number of
>> problems, not that anything making that much sense could ever happen.
On Sun, Dec 26, 2004 at 01:03:14AM +0300, Nikita Danilov wrote:
> mapping->gfp_mask is used for other things beyond specifying a
> zonelist. For example, file systems want all allocations inside a
> transaction to be done with GFP_NOFS, which forces GFP_NOFS in
> mapping->gfp_mask of meta-data address_spaces.
It's news to me, but benign. ->gfp_mask appears to be folded into
some bitflag word now so there wouldn't be an inode size reduction
anyway. Per-mapping gfp masks sound like a poor fit from the above.
-- wli
next prev parent reply other threads:[~2004-12-26 3:16 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-20 15:15 [PATCH][1/2] adjust dirty threshold for lowmem-only mappings Rik van Riel
2004-12-20 15:23 ` Rik van Riel
2004-12-20 20:54 ` Andrew Morton
2004-12-20 21:27 ` Rik van Riel
2004-12-23 19:21 ` Rik van Riel
2004-12-24 16:01 ` Andrea Arcangeli
2004-12-24 16:22 ` Rik van Riel
2004-12-24 16:40 ` Andrea Arcangeli
2004-12-24 22:12 ` Rik van Riel
2004-12-25 2:07 ` Andrea Arcangeli
2004-12-25 17:59 ` Rik van Riel
2004-12-25 18:36 ` Andrea Arcangeli
2004-12-25 19:07 ` William Lee Irwin III
2004-12-25 20:03 ` Andrea Arcangeli
2004-12-26 3:07 ` William Lee Irwin III
2005-01-02 16:10 ` Andrea Arcangeli
2005-01-02 16:36 ` William Lee Irwin III
2005-01-02 16:53 ` Rik van Riel
2005-01-02 17:21 ` Andrea Arcangeli
2004-12-25 22:03 ` Nikita Danilov
2004-12-26 3:16 ` William Lee Irwin III [this message]
2005-01-02 15:11 ` Jens Axboe
2005-01-02 16:18 ` Andrea Arcangeli
2005-01-02 20:03 ` Andrew Morton
2005-01-02 20:25 ` William Lee Irwin III
-- strict thread matches above, loose matches on Subject: below --
2004-12-20 16:46 Robert_Hentosh
2004-12-20 17:56 ` Sami Farin
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