On Mon, Sep 19, 2016 at 01:08:30PM +1000, Nicholas Piggin wrote: > Without looking through all the patches again, I believe the issue was > just that filesystems were not expecting (or at least, not audited to > expect) pages being added to their pagecache in that particular state > (they'd expect to go through ->readpage or see !uptodate in prepare_write). > > If some wanted to attach metadata to uptodate pages for example, this > may have caused a problem. It wasn't some big fundamental problem, just a > mechanical one. Umm... Why not make it non-uptodate/locked, try to replace the original with it in pagecache and then do full-page ->write_begin immediately followed by full-page ->write_end? Looks like that ought to work in all in-tree cases... -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
