scsi: storvsc: Resolve data race in storvsc_probe()
vmscsi_size_delta can be written concurrently by multiple instances of storvsc_probe(), corresponding to multiple synthetic IDE/SCSI devices; cf. storvsc_drv's probe_type == PROBE_PREFER_ASYNCHRONOUS. Change the global variable vmscsi_size_delta to per-synthetic-IDE/SCSI-device. Link: https://lore.kernel.org/r/20201217203321.4539-3-parri.andrea@gmail.com Cc: "James E.J. Bottomley" <jejb@linux.ibm.com> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: linux-scsi@vger.kernel.org Suggested-by:Dexuan Cui <decui@microsoft.com> Reviewed-by:
Dexuan Cui <decui@microsoft.com> Reviewed-by:
Michael Kelley <mikelley@microsoft.com> Signed-off-by:
Andrea Parri (Microsoft) <parri.andrea@gmail.com> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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