Re: [PATCH 1/2] ext4, dax: update dax check to skip journal inode

[Kani, Toshi]

On Tue, 2018-09-11 at 10:59 -0700, Dan Williams wrote:
> On Tue, Sep 11, 2018 at 8:42 AM, Toshi Kani <toshi.kani@xxxxxxx> wrote:
> > Ext4 mount path calls ext4_iget() to obtain the journal inode.  This
> > inode does not support DAX, and 'ext4_da_aops' needs to be set.  It
> > currently works for the DAX mount case because ext4_iget() always set
> > 'ext4_da_aops' to any regular files.
> > 
> >   ext4_fill_super
> >     ext4_load_journal
> >       ext4_get_journal_inode
> >         ext4_iget
> > 
> > In preparation to fix ext4_iget() to set 'ext4_dax_aops' for DAX files,
> > update ext4_should_use_dax() to return false for the journal inode.
> > 
> > Fixes: 5f0663bb4a64f588f0a2dd6d1be68d40f9af0086
> 
> Just a minor format recommendation:
> 
> Fixes: 5f0663bb4a64 ("ext4, dax: introduce ext4_dax_aops")
> Cc: <stable@xxxxxxxxxxxxxxx>

Will do.

> 
> This looks good to me.
> 
> Reviewed-by: Dan Williams <dan.j.williams@xxxxxxxxx>

Thanks!
-Toshi