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

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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.



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