On 9/12/24 10:31, Christoph Hellwig wrote:
+ * io_uring block file commands, see IORING_OP_URING_CMD.
+ * It's a different number space from ioctl(), reuse the block's code 0x12.
+ */
+#define BLOCK_URING_CMD_DISCARD _IO(0x12, 0)
Please just start out at some arbitrary boundary, but don't reuse
the ioctl code from an ioctl that does something vaguely similar for
no good reason.
It's a entirely different number space, it shouldn't care about
ioctl numbering. Regardless, BLK* in fs.h start with 93. I don't
even have a clue where is the rest.
Code Seq# Include File Comments
0x12 all linux/fs.h BLK* ioctls
linux/blkpg.h
--
Pavel Begunkov
