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Date: Sun, 11 Apr 2010 22:20:27 -0400 From: tytso@....edu To: Eric Sandeen <sandeen@...hat.com> Cc: ext4 development <linux-ext4@...r.kernel.org>, Jan Kara <jack@...e.cz> Subject: Re: [PATCH 0/3] ext4: don't use quota reservation for speculative metadata blocks On Wed, Apr 07, 2010 at 04:45:52PM -0500, Eric Sandeen wrote: > Because we can badly over-reserve metadata when we > calculate worst-case, it complicates things for quota, since > we must reserve and then claim later, retry on EDQUOT, etc. > Quota is also a generally smaller pool than fs free blocks, > so this over-reservation hurts more, and more often. > > I'm of the opinion that it's not the worst thing to allow > metadata to push a user slightly over quota. This simplifies > the code and avoids the false quota rejections that result > from worst-case speculation. This patch series looks good to me in general; Jan, it requires relatively minor changes to the quota system, so it would be good to get your Acked-by for the first two patches. Since the changes to the ext4 layer are more in-depth, any objections if I carry all three patches in the ext4 tree? - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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