On Wed, 17 May 2017, Vlastimil Babka wrote:
> struct page *
> -__alloc_pages_nodemask(gfp_t gfp_mask, unsigned int order,
> - struct zonelist *zonelist, nodemask_t *nodemask);
> +__alloc_pages_nodemask(gfp_t gfp_mask, unsigned int order, int preferred_nid,
> + nodemask_t *nodemask);
>
> static inline struct page *
> -__alloc_pages(gfp_t gfp_mask, unsigned int order,
> - struct zonelist *zonelist)
> +__alloc_pages(gfp_t gfp_mask, unsigned int order, int preferred_nid)
> {
> - return __alloc_pages_nodemask(gfp_mask, order, zonelist, NULL);
> + return __alloc_pages_nodemask(gfp_mask, order, preferred_nid, NULL);
> }
Maybe use nid instead of preferred_nid like in __alloc_pages? Otherwise
there may be confusion with the MPOL_PREFER policy.
> @@ -1963,8 +1960,8 @@ alloc_pages_vma(gfp_t gfp, int order, struct vm_area_struct *vma,
> {
> struct mempolicy *pol;
> struct page *page;
> + int preferred_nid;
> unsigned int cpuset_mems_cookie;
> - struct zonelist *zl;
> nodemask_t *nmask;
Same here.
> @@ -4012,8 +4012,8 @@ static inline void finalise_ac(gfp_t gfp_mask,
> * This is the 'heart' of the zoned buddy allocator.
> */
> struct page *
> -__alloc_pages_nodemask(gfp_t gfp_mask, unsigned int order,
> - struct zonelist *zonelist, nodemask_t *nodemask)
> +__alloc_pages_nodemask(gfp_t gfp_mask, unsigned int order, int preferred_nid,
> + nodemask_t *nodemask)
> {
and here
This looks clean to me. Still feel a bit uneasy about this since I do
remember that we had a reason to use zonelists instead of nodes back then
but cannot remember what that reason was....
CCing Dimitri at SGI. This may break a lot of legacy SGIapps. If you read
this Dimitri then please review this patchset and the discussions around
it.
Reviewed-by: Christoph Lameter <cl@xxxxxxxxx>
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