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H A D | raid56.c | diff 3e77605d6a81efd39278a5ca2ee57737eb2659d2 Fri Apr 01 13:23:21 CEST 2022 Qu Wenruo <wqu@suse.com> btrfs: raid56: make rbio_add_io_page() subpage compatible
Make rbio_add_io_page() subpage compatible, which involves:
- Rename rbio_add_io_page() to rbio_add_io_sector() Although we still rely on PAGE_SIZE == sectorsize, so add a new ASSERT() inside rbio_add_io_sector() to make sure all pgoff is 0.
- Introduce rbio_stripe_sector() helper The equivalent of rbio_stripe_page().
This new helper has extra ASSERT()s to validate the stripe and sector number.
- Introduce sector_in_rbio() helper The equivalent of page_in_rbio().
- Rename @pagenr variables to @sectornr
- Use rbio::stripe_nsectors when iterating the bitmap
Please note that, this only changes the interface, the bios are still using full page for IO.
Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
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