Re: [PATCH] pagemap: remove remaining unneeded spin_lock()
From: Andrea Arcangeli <hidden>
Date: 2012-03-29 20:26:43
Also in:
linux-mm, lkml
On Thu, Mar 29, 2012 at 04:39:39AM -0400, Naoya Horiguchi wrote:
commit: 025c5b2451e4 "thp: optimize away unnecessary page table locking" moves spin_lock() into pmd_trans_huge_lock() in order to avoid locking unless pmd is for thp. So this spin_lock() is a bug. Reported-by: Sasha Levin <redacted> Signed-off-by: Naoya Horiguchi <redacted> Cc: stable@vger.kernel.org
Reviewed-by: Andrea Arcangeli <redacted>