Hi, I have a question about block devices and whether they are required to enforce block atomicity: I read the code of drivers/block/brd.c, and I didn't see any locking when blocks are read/written. I also looked at the block layer code that calls brd and didn't find any locking there. Does it mean that there's no block atomicity (i.e. multiple threads can write a single block at the same time)? Is there any hidden assumption here? Is this the responsibility of the application to do that (e.g. not start a WRITE request before other READ/WRITE requests to the same block were completed)? Thanks, Erez -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
