On Mon, 19 May 2008, David Chinner wrote: > Defragmentation is triggered as part of the usual memory reclaim > process. Which implies we've run out of free memory, correct? Yes but we have already reclaimed some memory. > > How do you trigger such a special writeout? > > filemap_fdatawrite_range() perhaps? Could you provide me such a patch? I would not know how much to writeout. If we had such a method then we could also use that for the swap case where we also write out single pages? -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html