Re: [PATCHv5 07/28] thp, mlock: do not allow huge pages in mlocked area

2015-05-20 Thread Kirill A. Shutemov
On Tue, May 19, 2015 at 04:37:25PM +0200, Vlastimil Babka wrote: > On 05/15/2015 03:41 PM, Kirill A. Shutemov wrote: > >On Fri, May 15, 2015 at 02:56:42PM +0200, Vlastimil Babka wrote: > >>On 04/23/2015 11:03 PM, Kirill A. Shutemov wrote: > >>>With new refcounting THP can belong to several VMAs. Th

Re: [PATCHv5 07/28] thp, mlock: do not allow huge pages in mlocked area

2015-05-19 Thread Vlastimil Babka
On 05/15/2015 03:41 PM, Kirill A. Shutemov wrote: On Fri, May 15, 2015 at 02:56:42PM +0200, Vlastimil Babka wrote: On 04/23/2015 11:03 PM, Kirill A. Shutemov wrote: With new refcounting THP can belong to several VMAs. This makes tricky to track THP pages, when they partially mlocked. It can lea

Re: [PATCHv5 07/28] thp, mlock: do not allow huge pages in mlocked area

2015-05-15 Thread Kirill A. Shutemov
On Fri, May 15, 2015 at 02:56:42PM +0200, Vlastimil Babka wrote: > On 04/23/2015 11:03 PM, Kirill A. Shutemov wrote: > >With new refcounting THP can belong to several VMAs. This makes tricky > >to track THP pages, when they partially mlocked. It can lead to leaking > >mlocked pages to non-VM_LOCKED

Re: [PATCHv5 07/28] thp, mlock: do not allow huge pages in mlocked area

2015-05-15 Thread Vlastimil Babka
On 04/23/2015 11:03 PM, Kirill A. Shutemov wrote: With new refcounting THP can belong to several VMAs. This makes tricky to track THP pages, when they partially mlocked. It can lead to leaking mlocked pages to non-VM_LOCKED vmas and other problems. With this patch we will split all pages on mloc

Re: [PATCHv5 07/28] thp, mlock: do not allow huge pages in mlocked area

2015-04-29 Thread Jerome Marchand
On 04/23/2015 11:03 PM, Kirill A. Shutemov wrote: > With new refcounting THP can belong to several VMAs. This makes tricky > to track THP pages, when they partially mlocked. It can lead to leaking > mlocked pages to non-VM_LOCKED vmas and other problems. > > With this patch we will split all pages