f2fs: refactor __find_rev_next_{zero}_bit

This patch refactors __find_rev_next_{zero}_bit which was disabled previously
due to bugs.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2015-10-20 15:17:19 -07:00
commit f96999c35f