btrfs: Refactor clustered extent allocation into find_free_extent_clustered

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We have two main methods to find free extents inside a block group:

1) clustered allocation
2) unclustered allocation

This patch will extract the clustered allocation into
find_free_extent_clustered() to make it a little easier to read.

Instead of jumping between different labels in find_free_extent(), the
helper function will use return value to indicate different behavior.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Su Yue <suy.fnst@cn.fujitsu.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Qu Wenruo 2018-11-02 09:39:48 +08:00 • committed by David Sterba

parent b4bd745d12

commit d06e3bb690

1 changed files with 122 additions and 123 deletions

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fs/btrfs/extent-tree.c

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