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Date: Wed, 24 Oct 2012 11:58:33 +0300 (EEST) From: Pekka Enberg <penberg@...nel.org> To: Glauber Costa <glommer@...allels.com> cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org, Christoph Lameter <cl@...ux.com>, David Rientjes <rientjes@...gle.com> Subject: Re: [PATCH 1/2] slab: commonize slab_cache field in struct page On Mon, 22 Oct 2012, Glauber Costa wrote: > Right now, slab and slub have fields in struct page to derive which > cache a page belongs to, but they do it slightly differently. > > slab uses a field called slab_cache, that lives in the third double > word. slub, uses a field called "slab", living outside of the > doublewords area. > > Ideally, we could use the same field for this. Since slub heavily makes > use of the doubleword region, there isn't really much room to move > slub's slab_cache field around. Since slab does not have such strict > placement restrictions, we can move it outside the doubleword area. > > The naming used by slab, "slab_cache", is less confusing, and it is > preferred over slub's generic "slab". > > Signed-off-by: Glauber Costa <glommer@...allels.com> > CC: Christoph Lameter <cl@...ux.com> > CC: Pekka Enberg <penberg@...nel.org> > CC: David Rientjes <rientjes@...gle.com> Applied, thanks! -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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