On Thu, 14 Apr 2016 13:39:22 -0400 Matthew Wilcox <wi...@linux.intel.com> wrote:
> On Tue, Apr 05, 2016 at 01:55:23PM -0700, Hugh Dickins wrote: > > zap_pmd_range()'s CONFIG_DEBUG_VM !rwsem_is_locked(&mmap_sem) BUG() > > will be invalid with huge pagecache, in whatever way it is implemented: > > truncation of a hugely-mapped file to an unhugely-aligned size would > > easily hit it. > > We can reproduce this BUG() in the current Linus tree with DAX PMDs. > Andrew, can you send this patch to Linus for inclusion in 4.7? Wilco, thanks.
