On Thu, Jan 26, 2017 at 07:44:39AM -0800, Matthew Wilcox wrote: > On Thu, Jan 26, 2017 at 02:57:48PM +0300, Kirill A. Shutemov wrote: > > For filesystems that wants to be write-notified (has mkwrite), we will > > encount write-protection faults for huge PMDs in shared mappings. > > > > The easiest way to handle them is to clear the PMD and let it refault as > > wriable. > > ... of course, the filesystem could implement ->pmd_fault, and then it > wouldn't hit this case ... I would rather get rid of ->pmd_fault/->huge_fault :) ->fault should be flexible enough to provide for all of them... -- Kirill A. Shutemov
