diff options
Diffstat (limited to 'include/linux/nbd.h')
| -rw-r--r-- | include/linux/nbd.h | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/include/linux/nbd.h b/include/linux/nbd.h index d146ca10c0f5..5c86e2b33e2d 100644 --- a/include/linux/nbd.h +++ b/include/linux/nbd.h @@ -27,13 +27,22 @@ #define NBD_SET_SIZE_BLOCKS _IO( 0xab, 7 ) #define NBD_DISCONNECT _IO( 0xab, 8 ) #define NBD_SET_TIMEOUT _IO( 0xab, 9 ) +#define NBD_SET_FLAGS _IO( 0xab, 10) enum { NBD_CMD_READ = 0, NBD_CMD_WRITE = 1, - NBD_CMD_DISC = 2 + NBD_CMD_DISC = 2, + /* there is a gap here to match userspace */ + NBD_CMD_TRIM = 4 }; +/* values for flags field */ +#define NBD_FLAG_HAS_FLAGS (1 << 0) /* nbd-server supports flags */ +#define NBD_FLAG_READ_ONLY (1 << 1) /* device is read-only */ +/* there is a gap here to match userspace */ +#define NBD_FLAG_SEND_TRIM (1 << 5) /* send trim/discard */ + #define nbd_cmd(req) ((req)->cmd[0]) /* userspace doesn't need the nbd_device structure */ @@ -42,10 +51,6 @@ enum { #include <linux/wait.h> #include <linux/mutex.h> -/* values for flags field */ -#define NBD_READ_ONLY 0x0001 -#define NBD_WRITE_NOCHK 0x0002 - struct request; struct nbd_device { |