Matthew Wilcox <matthew@xxxxxx> writes: > On Sun, Nov 23, 2008 at 01:14:52PM +0100, Francis Moreau wrote: > >> Are there any cases where a page can be partially uptodate ? > > Consider a filesystem with 1k blocks and a system with a page size of 4k. > You have a buffer_head for each of the four blocks that are being kept > in the page, and you want to track their dirty state independently. Sorry but I'm confused since you're taking about the dirty state (tracked by BH_Dirty bit) and I was taking about the uptodate state (tracked by BH_Uptodate bit). > > For file data, no this doesn't happen. But for metadata, it happens >quite easily. Could you give me an example of these metadata ? Thanks Francis -- 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
