btrfs: replace for_each_set_bit() with for_each_set_bitmap()

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Inside extent_io.c, there are several simple call sites doing things
like:

	for_each_set_bit(bit, bitmap, bitmap_size) {
		/* handle one fs block */
	}

The workload includes:

- set_bit()
  Inside extent_writepage_io().

  This can be replaced with a bitmap_set().

- btrfs_folio_set_lock()
- btrfs_mark_ordered_io_finished()
  Inside writepage_delalloc().

  Instead of calling it multiple times, we can pass a range into the
  function with one call.

Reviewed-by: Boris Burkov <boris@bur.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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Qu Wenruo 2025-12-10 19:02:34 +10:30 • committed by David Sterba

parent 44820d8002

commit e6698b34fa

1 changed files with 16 additions and 10 deletions

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fs/btrfs/extent_io.c

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