From 0f04ab5efbca73ab366a156d96b073d2da35b158 Mon Sep 17 00:00:00 2001 From: KAMEZAWA Hiroyuki Date: Sat, 5 Aug 2006 12:14:59 -0700 Subject: [PATCH] [PATCH] memory hotadd fixes: change find_next_system_ram's return value manner find_next_system_ram() returns valid memory range which meets requested area, only used by memory-hot-add. This function always rewrite requested resource even if returned area is not fully fit in requested one. And sometimes the returnd resource is larger than requested area. This annoyes the caller. This patch changes the returned value to fit in requested area. Signed-off-by: KAMEZAWA Hiroyuki Cc: Keith Mannthey Cc: Yasunori Goto Cc: Dave Hansen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/resource.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/kernel/resource.c b/kernel/resource.c index 0dd3a85757..63e879379d 100644 --- a/kernel/resource.c +++ b/kernel/resource.c @@ -261,8 +261,10 @@ int find_next_system_ram(struct resource *res) if (!p) return -1; /* copy data */ - res->start = p->start; - res->end = p->end; + if (res->start < p->start) + res->start = p->start; + if (res->end > p->end) + res->end = p->end; return 0; } #endif -- 2.39.5