Re: [PATCH 2/5] fs: add STATX_DIO_READ_ALIGN

John Garry
2025-01-08T10:09:27Z

On 08/01/2025 08:55, Christoph Hellwig wrote:
> Add a separate dio read align field, as many out of place write
> file systems can easily do reads aligned to the device sector size,
> but require bigger alignment for writes.
>
> This is usually papered over by falling back to buffered I/O for smaller
> writes and doing read-modify-write cycles, but performance for this
> sucks, so applications benefit from knowing the actual write alignment.
>
> Signed-off-by: Christoph Hellwig<hch@lst.de>
> Reviewed-by: Jan Kara<jack@suse.cz>
> Reviewed-by: Darrick J. Wong<djwong@kernel.org>

FWIW:
Reviewed-by: John Garry <john.g.garry@oracle.com>