FROMGIT: f2fs: prevent atomic file from being dirtied before commit

Keep atomic file clean while updating and make it dirtied during commit
in order to avoid unnecessary and excessive inode updates in the previous
fix.

Fixes: 4bf78322 ("f2fs: mark inode dirty for FI_ATOMIC_COMMITTED flag")
Change-Id: I2a29d047fa4233632876c61cf909340d1f60c26d
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Bug: 439723009
Bug: 352181300
Bug: 441907828
(cherry picked from commit fccaa81d
 https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git

 dev)
Change-Id: I5970e56a5318804cfebea340b5b19d6e0a66dc01
Signed-off-by: Daeho Jeong <daehojeong@google.com>
(cherry picked from commit d1f3a046)