Re: [PATCH v4 00/11] exfat: convert to iomap

[Namjae Jeon]

On Tue, May 19, 2026 at 12:40 PM Darrick J. Wong <djwong@xxxxxxxxxx> wrote:
>
> On Mon, May 18, 2026 at 08:46:54PM +0900, Namjae Jeon wrote:
> > This patch series converts the exfat filesystem to the iomap framework for
> > buffered I/O, direct I/O, and llseek (SEEK_HOLE/SEEK_DATA) support.
> >
> > iozone benchmark results (4KB cluster size, -s1g -r64k, 1GB file, 64KB record size)
> >
> >                        1 thread                  4 threads
> >                      Write      Read           Write      Read
> >                      (MB/s)    (MB/s)         (MB/s)    (MB/s)
> > -----------------------------------------------------------------
> > exfat + iomap patch   332.7     418.1           78.6      82.4
> > Current exfat         278.4     415.1           42.1      38.0
> > -----------------------------------------------------------------
> > Improvement           +19.5%    +0.7%          +86.7%   +117.4%
>
> FWIW I scanned over the other patches in the series.  Nothing stood out
> as scream-worthy, though as the maintainer I'm assuming you're watching
> them closely for the kinds of QA problems that only an exfat expert
> would know. ;)
I've checked it against all the potential issues I'm aware of and no
issues in my test-sets either.
Once IOMAP_F_ZERO_TAIL lands, I plan to update NTFS to use it as well.
>
> Acked-by: "Darrick J. Wong" <djwong@xxxxxxxxxx>
Thanks for reviewing the series and giving your Acked-by!