xiaomi-sm8450/android_kernel_xiaomi_sm8450
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block: split scsi_request out of struct request

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And require all drivers that want to support BLOCK_PC to allocate it
as the first thing of their private data.  To support this the legacy
IDE and BSG code is switched to set cmd_size on their queues to let
the block layer allocate the additional space.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Christoph Hellwig
2017-01-27 09:46:29 +01:00
committed by Jens Axboe
parent 8ae94eb65b
commit 82ed4db499
49 changed files with 457 additions and 409 deletions
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2
include/scsi/scsi_cmnd.h
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@@ -8,6 +8,7 @@
#include <linux/timer.h>
#include <linux/scatterlist.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_request.h>
struct Scsi_Host;
struct scsi_driver;
@@ -57,6 +58,7 @@ struct scsi_pointer {
#define SCMD_TAGGED (1 << 0)
struct scsi_cmnd {
struct scsi_request req;
struct scsi_device *device;
struct list_head list; /* scsi_cmnd participates in queue lists */
struct list_head eh_entry; /* entry for the host eh_cmd_q */