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H A D | scsi_debug.c | 1107c7b2 Mon Mar 27 02:43:05 CDT 2023 John Garry <john.g.garry@oracle.com> scsi: scsi_debug: Dynamically allocate sdebug_queued_cmd
Eventually we will drop the sdebug_queue struct as it is not really required, so start with making the sdebug_queued_cmd dynamically allocated for the lifetime of the scsi_cmnd in the driver.
As an interim measure, make sdebug_queued_cmd.sd_dp a pointer to struct sdebug_defer. Also keep a value of the index allocated in sdebug_queued_cmd.qc_arr in struct sdebug_queued_cmd.
To deal with an races in accessing the scsi cmnd allocated struct sdebug_queued_cmd, add a spinlock for the scsi command in its priv area. Races may be between scheduling a command for completion, aborting a command, and the command actually completing and freeing the struct sdebug_queued_cmd.
[mkp: typo fix]
Signed-off-by: John Garry <john.g.garry@oracle.com> Link: https://lore.kernel.org/r/20230327074310.1862889-7-john.g.garry@oracle.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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