On Tue, Aug 6, 2013 at 2:23 PM, Prashant Shah <pshah.mumbai@xxxxxxxxx> wrote: > Hi, > >> Why do you want to modify blocks of a file, without filesystem knowing >> about it? What are you trying to achieve here? >> > > Its some shutdown - restart logic that I am working on :) > > I am sure doing it is not that complicated. I tried setting the page > flags and marking it dirty. Even doing a sync doesnt work. sync does not purge page-cache. I think you need to place some filesystem hooks to purge-cache and make sure nobody else reads the file while you update the block, because it will again populate filesystem page-cache. Purging cache might be tricky. > Regards. _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
