linux-kernel - Re: [PATCH -next v5 6/8] xfs: reserve blocks for truncating large realtime inode

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Message-ID: <ZmvcF_IXVLENjOVy@infradead.org>
Date: Thu, 13 Jun 2024 22:58:47 -0700
From: Christoph Hellwig <hch@...radead.org>
To: Zhang Yi <yi.zhang@...weicloud.com>
Cc: linux-xfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, djwong@...nel.org, hch@...radead.org,
	brauner@...nel.org, david@...morbit.com, chandanbabu@...nel.org,
	jack@...e.cz, yi.zhang@...wei.com, chengzhihao1@...wei.com,
	yukuai3@...wei.com
Subject: Re: [PATCH -next v5 6/8] xfs: reserve blocks for truncating large
 realtime inode

On Thu, Jun 13, 2024 at 05:00:31PM +0800, Zhang Yi wrote:
> From: Zhang Yi <yi.zhang@...wei.com>
> 
> For a large realtime inode, __xfs_bunmapi() could split the tail written
> extent and convert the later one that beyond EOF block to unwritten, but
> it couldn't work as expected on truncate down now since the reserved
> block is zero in xfs_setattr_size(), fix this by reserving
> XFS_DIOSTRAT_SPACE_RES blocks for large realtime inode.

Looks good:

Reviewed-by: Christoph Hellwig <hch@....de>