On Thu, May 19, 2016 at 05:20:01PM +0100, Julien Grall wrote: > Hello Kirill, > > On 12/05/16 16:41, Kirill A. Shutemov wrote: > >Add info about tmpfs/shmem with huge pages. > > > >Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> > >--- > > Documentation/vm/transhuge.txt | 130 +++++++++++++++++++++++++++++------------ > > 1 file changed, 93 insertions(+), 37 deletions(-) > > > >diff --git a/Documentation/vm/transhuge.txt b/Documentation/vm/transhuge.txt > >index d9cb65cf5cfd..96a49f123cac 100644 > >--- a/Documentation/vm/transhuge.txt > >+++ b/Documentation/vm/transhuge.txt > >@@ -9,8 +9,8 @@ using huge pages for the backing of virtual memory with huge pages > > that supports the automatic promotion and demotion of page sizes and > > without the shortcomings of hugetlbfs. > > > >-Currently it only works for anonymous memory mappings but in the > >-future it can expand over the pagecache layer starting with tmpfs. > >+Currently it only works for anonymous memory mappings and tmpfs/shmem. > >+But in the future it can expand to other filesystems. > > > > The reason applications are running faster is because of two > > factors. The first factor is almost completely irrelevant and it's not > >@@ -48,7 +48,7 @@ miss is going to run faster. > > - if some task quits and more hugepages become available (either > > immediately in the buddy or through the VM), guest physical memory > > backed by regular pages should be relocated on hugepages > >- automatically (with khugepaged) > >+ automatically (with khugepaged, limited to anonymous huge pages for now) > > Is it still relevant? I think the patch #30 at the support for tmpfs/shmem. I forgot to update documentation. I'll do for the next round when rebase to v4.7-rc1. Thanks for noticing this. -- Kirill A. Shutemov -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>