Hi all, We're currently carrying a patch out of tree to add subpage read and write support to the pl353_nand driver. Xilinx is currently working to mainline this driver; see
http://www.spinics.net/lists/devicetree/msg76307.html We'd like to upstream our patch, but my concern is that UBIFS behaves differently when it knows that the flash device supports subpages. I have a couple of questions related to that: - I know from experience that bad things happen when you use a kernel without subpage support with an UBIFS filesystem that was formatted with subpage support. Is it safe to do the opposite (kernel with subpage support / UBIFS filesystem formatted without subpage support)? - Assuming that it isn't safe, what's the best way to add subpage support to this driver in an upstreamable way / without breaking people? Would it be sufficient to add subpage support as a Kconfig option that's disabled by default with a strongly-worded message describing the consequences of enabling it? Thanks, Ben -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
