Re: [PATCH 1/6] mm/gup: perform check_dax_vmas only when FS_DAX is enabled

[Jason Gunthorpe]

On Wed, Dec 02, 2020 at 12:23:25AM -0500, Pavel Tatashin wrote:
> There is no need to check_dax_vmas() and run through the npage loop of
> pinned pages if FS_DAX is not enabled.
> 
> Add a stub check_dax_vmas() function for no-FS_DAX case.
> 
> Signed-off-by: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx>
> ---
>  mm/gup.c | 7 +++++++
>  1 file changed, 7 insertions(+)

I have a patch to delete check_dax_vmas that is just waiting on me to
figure out how to test with dax. That makes all this ifdefery much
simpler

Jason