tree af9dc4b9c1c840fcdcd7d1a4053ba0e05eb1f028
parent 5d2870faaa1fdcec795a6bf4dbbfc3e5d57fd7ab
author KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> 1154805306 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> 1154879869 -0700

[PATCH] memory hotadd fixes: enhance collision check

This patch is for collision check enhancement for memory hot add.

It's better to do resouce collision check before doing memory hot add,
which will touch memory management structures.

And add_section() should check section exists or not before calling
sparse_add_one_section(). (sparse_add_one_section() will do another
check anyway. but checking in memory_hotplug.c will be easy to understand.)

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: keith mannthey <kmannth@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>