f2fs: recover fallocated space
f2fs: recover fallocated space

If a fallocated file is fsynced, we should recover the i_size after sudden
power cut.

Signed-off-by: Jaegeuk Kim <71255387a32c360dfbe6dfb7aaeb123bf1dc8cb6@kernel.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs