btrfs: Refactor unclustered extent allocation into find_free_extent_unclustered()

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This patch will extract unclsutered extent allocation code into
find_free_extent_unclustered().

And this helper function will use return value to indicate what to do
next.

This should make find_free_extent() a little easier to read.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Su Yue <suy.fnst@cn.fujitsu.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
[Update merge conflict with fb5c39d7a8 ("btrfs: don't use ctl->free_space for max_extent_size")]
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Qu Wenruo 2018-11-02 09:39:49 +08:00 • committed by David Sterba

parent d06e3bb690

commit e1a4184815

1 changed files with 69 additions and 46 deletions

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115

fs/btrfs/extent-tree.c

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