On Tue, Jul 20, 2010 at 03:29:48PM -0700, Andrew Morton wrote: > From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> > > Now, rw_verify_area() checsk f_pos is negative or not. And if negative, > returns -EINVAL. > > But, some special files as /dev/(k)mem and /proc/<pid>/mem etc.. has > negative offsets. And we can't do any access via read/write to the > file(device). > > So introduce FMODE_NEG_OFFSET to allow negative file offsets. Minor nitpick but I don't understand why this is called NEG_OFFSET. It's a large positive offset into the file so FMODE_UNSIGNED_OFFSET seems like it would be better. -- 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
