[v4,0/15] CoW support for iomap
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Message ID 20190905150650.21089-1-rgoldwyn@suse.de
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  • CoW support for iomap
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Goldwyn Rodrigues Sept. 5, 2019, 3:06 p.m. UTC
Previously called btrfs iomap.

This is an effort to use iomap for btrfs. This would keep most
responsibility of page handling during writes in iomap code, hence
code reduction. For CoW support, changes are needed in iomap code
to make sure we perform a copy before the write.
This is in line with the discussion we had during adding dax support in
btrfs.

I din't mean to change the series topic, but I am expanding into
XFS. However, I have not thoroughly tested XFS changes yet. I am
sending this for the deadline set by Darrick.

This patchset is based on DIO changes sent by Christoph,
based on patches by Matthew Bobrowski.

[1] https://github.com/goldwynr/linux/tree/btrfs-iomap