bo@gmail.com> 1351588432 +0800
committer Jiri Kosina <jkosina@suse.cz> 1351588730 +0100

btrfs: unpin_extent_cache: fix the typo and unnecessary arguements

- unpint->unpin
- prealloc is no more used

Signed-off-by: Liu Bo <liub.liubo@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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