f2fs: avoid unnecessary checkpoints
authorJaegeuk Kim <jaegeuk.kim@samsung.com>
Tue, 8 Oct 2013 00:30:33 +0000 (09:30 +0900)
committerJaegeuk Kim <jaegeuk.kim@samsung.com>
Tue, 8 Oct 2013 00:32:43 +0000 (09:32 +0900)
During the f2fs_put_super procedure, we don't need to conduct checkpoint all
the time, since we don't need to do that if superblock is clean.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

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