Re: [PATCH -next] slub: set PG_slab on all of slab pages
From: Christoph Lameter <cl@gentwo.org>
Date: 2012-02-29 15:31:15
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On Wed, 29 Feb 2012, Namhyung Kim wrote:
Unlike SLAB, SLUB doesn't set PG_slab on tail pages, so if a user would call free_pages() incorrectly on a object in a tail page, she will get confused with the undefined result. Setting the flag would help her by emitting a warning on bad_page() in such a case.
NAK You cannot free a tail page of a compound higher order page independently. You must free the whole compound. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>