diff options
| author | Christoph Hellwig <hch@lst.de> | 2022-02-24 18:55:47 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-03-01 22:21:49 -0500 |
| commit | ce70fd9a551af7424a7dace2a1ba05a7de8eae27 (patch) | |
| tree | c074d0b72237150c6657b632325917f28b1a827a /drivers/scsi/scsi_debugfs.c | |
| parent | 71bada345b33b9297e7cc9415db6328c99b554f9 (diff) | |
scsi: core: Remove the cmd field from struct scsi_request
Now that each scsi_request is backed by a scsi_cmnd, there is no need to
indirect the CDB storage. Change all submitters of SCSI passthrough
requests to store the CDB information directly in the scsi_cmnd, and while
doing so allocate the full 32 bytes that cover all Linux supported SCSI
hosts instead of requiring dynamic allocation for > 16 byte CDBs. On
64-bit systems this does not change the size of the scsi_cmnd at all, while
on 32-bit systems it slightly increases it for now, but that increase will
be made up by the removal of the remaining scsi_request fields.
Link: https://lore.kernel.org/r/20220224175552.988286-4-hch@lst.de
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/scsi_debugfs.c')
| -rw-r--r-- | drivers/scsi/scsi_debugfs.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/scsi/scsi_debugfs.c b/drivers/scsi/scsi_debugfs.c index db8517f1a485..17d7f73a895c 100644 --- a/drivers/scsi/scsi_debugfs.c +++ b/drivers/scsi/scsi_debugfs.c @@ -36,11 +36,9 @@ void scsi_show_rq(struct seq_file *m, struct request *rq) struct scsi_cmnd *cmd = container_of(scsi_req(rq), typeof(*cmd), req); int alloc_ms = jiffies_to_msecs(jiffies - cmd->jiffies_at_alloc); int timeout_ms = jiffies_to_msecs(rq->timeout); - const u8 *const cdb = READ_ONCE(cmd->cmnd); char buf[80] = "(?)"; - if (cdb) - __scsi_format_command(buf, sizeof(buf), cdb, cmd->cmd_len); + __scsi_format_command(buf, sizeof(buf), cmd->cmnd, cmd->cmd_len); seq_printf(m, ", .cmd=%s, .retries=%d, .result = %#x, .flags=", buf, cmd->retries, cmd->result); scsi_flags_show(m, cmd->flags, scsi_cmd_flags, |