On Sun, Jun 24, 2007 at 03:46:13AM +0200, Nick Piggin wrote: > Rewrite the buffer layer. Overall, I like the basic concepts, but it is hard to track the locking rules. Could you please write them up? I like the way you split out the assoc_buffers from the main fsblock code, but the list setup is still something of a wart. It also provides poor ordering of blocks for writeback. I think it makes sense to replace the assoc_buffers list head with a radix tree sorted by block number. mark_buffer_dirty_inode would up the reference count and put it into the radix, the various flushing routines would walk the radix etc. If you wanted to be able to drop the reference count once the block was written you could have a back pointer to the appropriate inode. -chris - 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