Re: allow file systems to increase the minimum writeback chunk size

Damien Le Moal
2025-10-15T07:11:37Z

On 2025/10/15 15:27, Christoph Hellwig wrote:
> Hi all,
>
> The relatively low minimal writeback size of 4MiB leads means that
> written back inodes on rotational media are switched a lot. Besides
> introducing additional seeks, this also can lead to extreme file
> fragmentation on zoned devices when a lot of files are cached relative
> to the available writeback bandwidth.
>
> Add a superblock field that allows the file system to override the
> default size, and set it to the zone size for zoned XFS.

For the series:

Tested-by: Damien Le Moal <dlemoal@kernel.org>

--
Damien Le Moal
Western Digital Research