block device raw access
Is it allowed to use open/close read/write and seek on a block device directly? If not is there an easy way of accessing the block device just for reading and writing?
I am using the MTD subsystem mounting a JFFS file system on mtdblock0. However JFFS is using too much room on the flash device and I would like to use the block device directly (ie without mounting it). I know I can do it using the associated char device mtd0 but buffering is not used and it gets too slow.