Re: reduce memory allocation in the btrfs direct I/O path

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On Thu, May 05, 2022 at 05:55:29PM +0200, David Sterba wrote:
> On Wed, May 04, 2022 at 09:23:37AM -0700, Christoph Hellwig wrote:
> > Hi all,
> > 
> > this series adds two minor improvements to iomap that allow btrfs
> > to avoid a memory allocation per read/write system call and another
> > one per submitted bio.  I also have at last two other pending uses
> > for the iomap functionality later on, so they are not really btrfs
> > specific either.
> 
> The series is reasonably short so I'd like to add it to 5.20 queue,
> provided that the iomap patches get acked by Darrick. Any fixups I'd
> rather fold into my local branch, no need to resend unless there are
> significant updates.

Hm.  I'm planning on pushing out a (very late) iomap-5.19-merge branch,
since (AFAICT) these changes are mostly plumbing.  Do you want me to
push the first three patches of this series for 5.19?

--D



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