btrfs: introduce helper to grab an existing extent buffer from a page

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This patch will extract the code to grab an extent buffer from a page
into a helper, grab_extent_buffer_from_page().

This reduces one indent level, and provides the work place for later
expansion for subapge support.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
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 2021-01-06 09:01:45 +08:00 • committed by David Sterba

parent c0fab48095

commit c0f0a9e716

1 changed files with 30 additions and 20 deletions

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fs/btrfs/extent_io.c

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