Re: [PATCH] mm: fix page cache convergence regression

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On Fri, May 24, 2019 at 11:31:48AM -0400, Johannes Weiner wrote:
> diff --git a/include/linux/xarray.h b/include/linux/xarray.h
> index 0e01e6129145..cbbf76e4c973 100644
> --- a/include/linux/xarray.h
> +++ b/include/linux/xarray.h
> @@ -292,6 +292,7 @@ struct xarray {
>  	spinlock_t	xa_lock;
>  /* private: The rest of the data structure is not to be used directly. */
>  	gfp_t		xa_flags;
> +	gfp_t		xa_gfp;
>  	void __rcu *	xa_head;
>  };

No.  I'm willing to go for a xa_flag which says to use __GFP_ACCOUNT, but
you can't add another element to the struct xarray.

We haven't even finished the discussion from yesterday.  I'm going to
go back to that thread and keep discussing there.




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