tree d4a2a244e57a04861f1db701831fe579e0aa1b76
parent 293c07e31ab5a0b8df8c19b2a9e5c6fa30308849
author Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> 1361579643 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1361670615 -0800

mm/memory-failure.c: clean up soft_offline_page()

Currently soft_offline_page() is hard to maintain because it has many
return points and goto statements.  All of this mess come from
get_any_page().

This function should only get page refcount as the name implies, but it
does some page isolating actions like SetPageHWPoison() and dequeuing
hugepage.  This patch corrects it and introduces some internal
subroutines to make soft offlining code more readable and maintainable.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reviewed-by: Andi Kleen <andi@firstfloor.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Xishi Qiu <qiuxishi@huawei.com>
Cc: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>