lkml.org 
[lkml]   [2006]   [Oct]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [stable] [patch 07/19] invalidate_complete_page() race fix
    On Tue, Oct 10, 2006 at 07:12:54PM +0100, Hugh Dickins wrote:
    > On Tue, 10 Oct 2006, Greg KH wrote:
    >
    > > -stable review patch. If anyone has any objections, please let us know.
    > >
    > > ------------------
    > > From: Andrew Morton <akpm@osdl.org>
    > >
    > > If a CPU faults this page into pagetables after invalidate_mapping_pages()
    > > checked page_mapped(), invalidate_complete_page() will still proceed to remove
    > > the page from pagecache. This leaves the page-faulting process with a
    > > detached page. If it was MAP_SHARED then file data loss will ensue.
    > >
    > > Fix that up by checking the page's refcount after taking tree_lock.
    >
    > I may have lost the plot, but I think this patch has already proved
    > to cause problems for NFS in 2.6.18: not good to put it into 2.6.17
    > stable while it's awaiting refinement for 2.6.18 stable.

    Ok, I've dropped it now.

    thanks,

    greg k-h
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2006-10-10 21:19    [W:0.019 / U:60.956 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site