"Darrick J. Wong" <darrick.w...@oracle.com> writes:

>> +    err = __generic_file_fsync(filp, start, end, datasync);
>> +    if (err)
>> +            return err;
>>  
>> -    res = generic_file_fsync(filp, start, end, datasync);
>>      err = sync_mapping_buffers(MSDOS_SB(inode->i_sb)->fat_inode->i_mapping);
>
> Huh.  I would've thought that flushing the FAT would also be required
> at the end of a WB_SYNC_ALL (aka data integrity) writepages call?

In fatfs implement, FAT area is flushed by sync_mapping_buffers(fat_inode). 
(FAT buffer is dirtied only by using bh->b_assoc_map to fat_inode)

Thanks.
-- 
OGAWA Hirofumi <hirof...@mail.parknet.co.jp>

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