Re: reduce memory allocation in the btrfs direct I/O path v2

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On Thu, May 05, 2022 at 03:11:08PM -0500, 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.
> 
> Changes since v1:
>  - pass the private data direct to iomap_dio_rw instead of through the
>    iocb
>  - better document the bio_set in iomap_dio_ops
>  - split a patch into three
>  - use kcalloc to allocate the checksums

Added to misc-next and queued for 5.19, thanks.



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