Re: [PATCH] mm: Fix PageHead when !CONFIG_PAGEFLAGS_EXTENDED

2012-12-28 Thread Christoffer Dall
On Fri, Dec 28, 2012 at 5:01 PM, Linus Torvalds wrote: > On Fri, Dec 28, 2012 at 9:07 AM, wrote: >> From: Christoffer Dall >> >> Unfortunately with !CONFIG_PAGEFLAGS_EXTENDED, (!PageHead) is false, and >> (PageHead) is true, for tail pages. This breaks cache cleaning on some >> ARM systems, an

Re: [PATCH] mm: Fix PageHead when !CONFIG_PAGEFLAGS_EXTENDED

2012-12-28 Thread Linus Torvalds
On Fri, Dec 28, 2012 at 9:07 AM, wrote: > From: Christoffer Dall > > Unfortunately with !CONFIG_PAGEFLAGS_EXTENDED, (!PageHead) is false, and > (PageHead) is true, for tail pages. This breaks cache cleaning on some > ARM systems, and may cause other bugs. So this already got committed earlier