tree 435509146c5e3fe116de2c84d15fe1bd48622f43
parent 8508e44ae98622f841f5ef29d0bf3d5db4e0c1cc
author Jaegeuk Kim <jaegeuk@kernel.org> 1480376018 -0800
committer Jaegeuk Kim <jaegeuk@kernel.org> 1480462978 -0800

f2fs: do not activate auto_recovery for fallocated i_size

If a file needs to keep its i_size by fallocate, we need to turn off auto
recovery during roll-forward recovery.

This will resolve the below scenario.

1. xfs_io -f /mnt/f2fs/file -c "pwrite 0 4096" -c "fsync"
2. xfs_io -f /mnt/f2fs/file -c "falloc -k 4096 4096" -c "fsync"
3. md5sum /mnt/f2fs/file;
4. godown /mnt/f2fs/
5. umount /mnt/f2fs/
6. mount -t f2fs /dev/sdx /mnt/f2fs
7. md5sum /mnt/f2fs/file

Reported-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>