Re: [PATCH v5 0/7] Extend write-hint framework, and add write-hint for Ext4 journal

['Christoph Hellwig']

On Tue, May 21, 2019 at 10:25:28AM +0200, Jan Kara wrote:
> performance benefits for some drives. After all you can just think about it
> like RWH_WRITE_LIFE_JOURNAL type of hint available for the kernel...

Except that it actuallys adds a parallel insfrastructure.  A
RWH_WRITE_LIFE_JOURNAL would be much more palatable, but someone needs
to explain how that is:

 a) different from RWH_WRITE_LIFE_SHORT
 b) would not apply to a log/journal maintained in userspace that works
    exactly the same