linux-kernel - Re: [PATCH] xfs: Check for deallayed allocations before setting extsize

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Message-ID: <Zv_cTc6cgxszKGy3@infradead.org>
Date: Fri, 4 Oct 2024 05:15:09 -0700
From: Christoph Hellwig <hch@...radead.org>
To: Ojaswin Mujoo <ojaswin@...ux.ibm.com>
Cc: Christoph Hellwig <hch@...radead.org>, linux-xfs@...r.kernel.org,
	Ritesh Harjani <ritesh.list@...il.com>,
	linux-kernel@...r.kernel.org,
	"Darrick J . Wong" <djwong@...nel.org>, dchinner@...hat.com,
	Chandan Babu R <chandan.babu@...cle.com>
Subject: Re: [PATCH] xfs: Check for deallayed allocations before setting
 extsize

On Fri, Oct 04, 2024 at 02:26:07PM +0530, Ojaswin Mujoo wrote:
> Hi Christoph, actually now that we are also planning to use this for
> atomic writes, we are thinking to add a generic extsize ioctl 
> test to check for:
> 
> 1. Setting hint on empty file should pass
> 2. Setting hint on a file with delayed allocation data should fail
> 3. Setting hint on a file with allocated data should fail
> 4. Setting hint on a file which is truncated to size 0 after write should pass
> 
> So that should cover this for ext4 and xfs as well.

Sounds good.