On Wed, Feb 23, 2011 at 03:35:11PM -0500, Chris Mason wrote: > > ocfs2 handles stable metadata for its checksums when feeding > > things to the journal. If we're doing pagecache-based I/O, is the > > pagecache going to help here for data? > > Data is much easier than metadata. All you really need is to wait on > writeback in file_write, wait on writeback in page_mkwrite, and make > sure you don't free blocks back to the allocator that are actively under > IO. > > I expect the hard part to be jbd and metadata in ext34. Yeah, catching use-without-access is not trivial. I keep thinking we've found them all, and then another bug crops up ;-) At least our checksums catch it. Joel -- "The doctrine of human equality reposes on this: that there is no man really clever who has not found that he is stupid." - Gilbert K. Chesterson http://www.jlbec.org/ jlbec@xxxxxxxxxxxx -- 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
