lkml.org 
[lkml]   [2011]   [Sep]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectRe: [BUG] infinite loop in find_get_pages()
    From
    Date
    Le mercredi 14 septembre 2011 à 14:53 -0700, Hugh Dickins a écrit :
    > On Wed, 14 Sep 2011, Eric Dumazet wrote:
    > > Le mercredi 14 septembre 2011 à 13:38 -0700, Hugh Dickins a écrit :
    > > >
    > > > I'd like to think about that a little more before finalizing the
    > > > patch below - does it work, and does it look acceptable so far?
    > > > Of course, the mods to truncate.c and vmscan.c are not essential
    > > > parts of this fix, just things to tidy up while on the subject.
    > > > Right now I must attend to some other stuff, will return tomorrow.
    > >
    > > Hello Hugh
    > >
    > > I am going to test this ASAP,
    >
    > Thanks, Eric, though it may not be worth spending your time on it.
    > It occurred to me over lunch that it may take painfully longer than
    > expected to invalidate_mapping_pages() on a single-swapped-out-page
    > 1TB sparse tmpfs file - all those "start += 1" restarts until it
    > reaches the end.
    >
    > I might decide to leave invalidate_mapping_pages() giving up early
    > (unsatisfying, but no worse than before), and convert scan_mapping_
    > unevictable_pages() (which is used on nothing but shmem) to pass
    > index vector to radix_tree_gang_whatever().
    >
    > Dunno, I'll think about it more later.
    >

    I tested your patch as is on my machine, and everything seems fine.

    I let the stress continue while I am going to sleep :)

    See you


    --
    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: 2011-09-15 00:11    [W:0.025 / U:31.788 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site