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Re: [PATCH 4/5] ext4: fallocate support in ext4

To: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: Re: [PATCH 4/5] ext4: fallocate support in ext4
From: Jan Kara <jack@xxxxxxx>
Date: Mon, 14 May 2007 15:34:46 +0200
Cc: Andreas Dilger <adilger@xxxxxxxxxxxxx>, "Amit K. Arora" <aarora@xxxxxxxxxxxxxxxxxx>, linux-fsdevel@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-ext4@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx, suparna@xxxxxxxxxx, cmm@xxxxxxxxxx
In-reply-to: <20070507135825.f8545a65.akpm@linux-foundation.org>
References: <20070417125514.GA7574@amitarora.in.ibm.com> <20070418130600.GW5967@schatzie.adilger.int> <20070420135146.GA21352@amitarora.in.ibm.com> <20070420145918.GY355@devserv.devel.redhat.com> <20070424121632.GA10136@amitarora.in.ibm.com> <20070426175056.GA25321@amitarora.in.ibm.com> <20070426181332.GD7209@amitarora.in.ibm.com> <20070503213133.d1559f52.akpm@linux-foundation.org> <20070507113753.GA5439@schatzie.adilger.int> <20070507135825.f8545a65.akpm@linux-foundation.org>
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> On Mon, 7 May 2007 05:37:54 -0600
> Does the proposed implementation handle quotas correctly, btw?  Has that
> been tested?
  It seems to handle quotas fine - the block allocation itself does not
differ from the usual case, just the extents in the tree are marked as
  The only question is whether DQUOT_PREALLOC_BLOCK() shouldn't be
called instead of DQUOT_ALLOC_BLOCK(). Then fallocate() won't be able to
allocate anything after the softlimit has been reached which makes some
sence but probably current behavior is kind-of less surprising.

Jan Kara <jack@xxxxxxx>
SuSE CR Labs

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