lkml.org 
[lkml]   [2002]   [Sep]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    SubjectRe: invalidate_inode_pages in 2.5.32/3
    Date
    On Friday 13 September 2002 01:23, Rik van Riel wrote:
    > On Thu, 12 Sep 2002, Andrew Morton wrote:
    > > Rik van Riel wrote:
    >
    > > > invalidate_page(struct page * page) {
    >
    > > That's the bottom-up approach. The top-down (vmtruncate) approach
    > > would also work, if the locking is suitable.
    >
    > The top-down approach will almost certainly be most efficient when
    > invalidating a large chunk of a file (truncate, large file locks)
    > while the bottom-up approach is probably more efficient when the
    > system invalidates very few pages (small file lock, cluster file
    > system mmap() support).

    The bottom-up approach is the one we want to use when we'd otherwise
    skip a page in invalidate_inode_pages. This is the rare case. On the
    face of it, this works out very well. Just have to think about
    interactions now - I don't see any, but I haven't really gone hunting
    yet.

    --
    Daniel
    -
    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: 2005-03-22 13:22    [W:0.023 / U:60.844 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site