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| author | Christoph Hellwig <hch@lst.de> | 2014-05-01 16:51:50 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-05-19 19:57:23 +0200 |
| commit | b54197c43db88f4436717f554d623189cddce29e (patch) | |
| tree | d8ea18d1b76b79e5c82a0c17196971d9cfff94a1 /include/scsi/scsi_cmnd.h | |
| parent | fdbcbcab0eae6773430546697ace0b3fe48e7fbc (diff) | |
| download | talos-op-linux-b54197c43db88f4436717f554d623189cddce29e.tar.gz talos-op-linux-b54197c43db88f4436717f554d623189cddce29e.zip | |
virtio_scsi: use cmd_size
Taken almost entirely from Nicholas Bellinger's scsi-mq conversion.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'include/scsi/scsi_cmnd.h')
| -rw-r--r-- | include/scsi/scsi_cmnd.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index dd7c998221b3..e016e2ac38df 100644 --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h @@ -133,6 +133,15 @@ struct scsi_cmnd { unsigned char tag; /* SCSI-II queued command tag */ }; +/* + * Return the driver private allocation behind the command. + * Only works if cmd_size is set in the host template. + */ +static inline void *scsi_cmd_priv(struct scsi_cmnd *cmd) +{ + return cmd + 1; +} + /* make sure not to use it with REQ_TYPE_BLOCK_PC commands */ static inline struct scsi_driver *scsi_cmd_to_driver(struct scsi_cmnd *cmd) { |
