btrfs: raid56: reduce overhead to calculate the bio length

Browse source

In rbio_update_error_bitmap(), we need to calculate the length of the
rbio.  As since it's called in the endio function, we can not directly
grab the length from bi_iter.

Currently we call bio_for_each_segment_all(), which will always return a
range inside a page.  But that's not necessary as we don't really care
about anything inside the page.

So use bio_for_each_bvec_all(), which can return a bvec across multiple
continuous pages thus reduce the loops.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

...

This commit is contained in:

Qu Wenruo 2023-01-21 16:06:12 +08:00 • committed by David Sterba

parent 67da05b3f2

commit c9a43aaf09

1 changed files with 1 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

3

fs/btrfs/raid56.c

View file