Re: [RFC PATCH] page_cgroup: Reduce allocation overhead for page_cgroup array for CONFIG_SPARSEMEM v4
From: Michal Hocko <hidden>
Date: 2011-02-28 10:12:03
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On Mon 28-02-11 18:48:21, KAMEZAWA Hiroyuki wrote:
On Mon, 28 Feb 2011 10:53:16 +0100quoted
From e7a897a42b526620eb4afada2d036e1c9ff9e62a Mon Sep 17 00:00:00 2001 From: Michal Hocko <redacted> Date: Mon, 28 Feb 2011 10:43:12 +0100 Subject: [PATCH] page_cgroup array is never stored on reserved pages KAMEZAWA Hiroyuki noted that free_pages_cgroup doesn't have to check for PageReserved because we never store the array on reserved pages (neither alloc_pages_exact nor vmalloc use those pages). So we can replace the check by a BUG_ON. Signed-off-by: Michal Hocko <redacted> CC: KAMEZAWA Hiroyuki <redacted>Thank you. Acked-by: KAMEZAWA Hiroyuki <redacted>
Thanks! -- Michal Hocko SUSE Labs SUSE LINUX s.r.o. Lihovarska 1060/12 190 00 Praha 9 Czech Republic -- 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>