This patch does not change any functionality but reduces the size of
struct scsi_cmnd.

Cc: Douglas Gilbert <[email protected]>
Cc: Hannes Reinecke <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
---
 drivers/scsi/scsi_lib.c  | 2 --
 include/scsi/scsi_cmnd.h | 9 ++++-----
 2 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 54902afb8d94..af648b93f9b3 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -945,14 +945,12 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned 
int good_bytes)
                 * scsi_result_to_blk_status may have reset the host_byte
                 */
                scsi_req(req)->result = cmd->result;
-               scsi_req(req)->resid_len = scsi_get_resid(cmd);
 
                if (unlikely(scsi_bidi_cmnd(cmd))) {
                        /*
                         * Bidi commands Must be complete as a whole,
                         * both sides at once.
                         */
-                       scsi_req(req->next_rq)->resid_len = scsi_in(cmd)->resid;
                        if (scsi_end_request(req, BLK_STS_OK, blk_rq_bytes(req),
                                        blk_rq_bytes(req->next_rq)))
                                WARN_ONCE(true,
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h
index 8f3ed55a5ee5..9035c760cae0 100644
--- a/include/scsi/scsi_cmnd.h
+++ b/include/scsi/scsi_cmnd.h
@@ -35,7 +35,6 @@ struct scsi_driver;
 struct scsi_data_buffer {
        struct sg_table table;
        unsigned length;
-       int resid;
 };
 
 /* embedded in scsi_cmnd */
@@ -229,22 +228,22 @@ static inline unsigned scsi_bufflen(struct scsi_cmnd *cmd)
 
 static inline void scsi_in_set_resid(struct scsi_cmnd *cmd, int resid)
 {
-       scsi_in_cmd(cmd)->sdb.resid = resid;
+       scsi_in_cmd(cmd)->req.resid_len = resid;
 }
 
 static inline int scsi_in_get_resid(struct scsi_cmnd *cmd)
 {
-       return scsi_in_cmd(cmd)->sdb.resid;
+       return scsi_in_cmd(cmd)->req.resid_len;
 }
 
 static inline void scsi_out_set_resid(struct scsi_cmnd *cmd, int resid)
 {
-       cmd->sdb.resid = resid;
+       cmd->req.resid_len = resid;
 }
 
 static inline int scsi_out_get_resid(struct scsi_cmnd *cmd)
 {
-       return cmd->sdb.resid;
+       return cmd->req.resid_len;
 }
 
 static inline void scsi_set_resid(struct scsi_cmnd *cmd, int resid)
-- 
2.20.1.321.g9e740568ce-goog

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