[SRU][Q/P/N:linux-azure][PATCH 0/1] [STORVSC] [Backport] Backport for Linux storage driver patch for fixing performance issues

[John Cabaj]

BugLink: https://bugs.launchpad.net/bugs/2128842

SRU Justification

[Impact]

* Microsoft requested patch to improve efficiency of SCSI I/O on Hyper-V by issuing IO on same CPU as return CPU.

[Fix]

* clean cherry-pick of linux-next patch:
    * b69ffeaa0ae4: "scsi: storvsc: Prefer returning channel with the same CPU as on the I/O issuing CPU"

[Test Plan]

* Compile tested
* Microsoft to test

[Regression potential]

* Patch limited to SCSI module. Possible regressions could result in unexpected performance desegregation in non-Hyper-V cases.

[Other info]

* SF#00420316

Long Li (1):
  scsi: storvsc: Prefer returning channel with the same CPU as on the
    I/O issuing CPU

 drivers/scsi/storvsc_drv.c | 96 ++++++++++++++++++--------------------
 1 file changed, 45 insertions(+), 51 deletions(-)

-- 
2.43.0