[PATCH v2 00/30] cxlflash: Miscellaneous bug fixes and corrections · Matthew R. Ochs <hidden> · 2015-09-16
[PATCH v2 01/30] cxlflash: Fix to avoid invalid port_sel value · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 01/30] cxlflash: Fix to avoid invalid port_sel value · Brian King <hidden> · 2015-09-18
[PATCH v2 02/30] cxlflash: Replace magic numbers with literals · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 02/30] cxlflash: Replace magic numbers with literals · Brian King <hidden> · 2015-09-18
[PATCH v2 04/30] cxlflash: Fix potential oops following LUN removal · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 04/30] cxlflash: Fix potential oops following LUN removal · Brian King <hidden> · 2015-09-18
Re: [PATCH v2 04/30] cxlflash: Fix potential oops following LUN removal · Matthew R. Ochs <hidden> · 2015-09-18
Re: [PATCH v2 04/30] cxlflash: Fix potential oops following LUN removal · Tomas Henzl <hidden> · 2015-09-21
Re: [PATCH v2 04/30] cxlflash: Fix potential oops following LUN removal · Matthew R. Ochs <hidden> · 2015-09-21
[PATCH v2 03/30] cxlflash: Fix read capacity timeout · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 03/30] cxlflash: Fix read capacity timeout · Brian King <hidden> · 2015-09-18
Re: [PATCH v2 03/30] cxlflash: Fix read capacity timeout · Tomas Henzl <hidden> · 2015-09-21
Re: [PATCH v2 03/30] cxlflash: Fix read capacity timeout · Matthew R. Ochs <hidden> · 2015-09-21
[PATCH v2 05/30] cxlflash: Fix data corruption when vLUN used over multiple cards · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 05/30] cxlflash: Fix data corruption when vLUN used over multiple cards · Brian King <hidden> · 2015-09-18
[PATCH v2 06/30] cxlflash: Fix to avoid sizeof(bool) · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 06/30] cxlflash: Fix to avoid sizeof(bool) · Brian King <hidden> · 2015-09-18
[PATCH v2 07/30] cxlflash: Fix context encode mask width · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 07/30] cxlflash: Fix context encode mask width · Brian King <hidden> · 2015-09-18
[PATCH v2 09/30] cxlflash: Fix to stop interrupt processing on remove · Matthew R. Ochs <hidden> · 2015-09-16
RE: [PATCH v2 09/30] cxlflash: Fix to stop interrupt processing on remove · David Laight <hidden> · 2015-09-17
Re: [PATCH v2 09/30] cxlflash: Fix to stop interrupt processing on remove · Matthew R. Ochs <hidden> · 2015-09-17
[PATCH v2 08/30] cxlflash: Fix to avoid CXL services during EEH · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 08/30] cxlflash: Fix to avoid CXL services during EEH · Brian King <hidden> · 2015-09-18
Re: [PATCH v2 08/30] cxlflash: Fix to avoid CXL services during EEH · Matthew R. Ochs <hidden> · 2015-09-18
[PATCH v2 10/30] cxlflash: Correct naming of limbo state and waitq · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 10/30] cxlflash: Correct naming of limbo state and waitq · Brian King <hidden> · 2015-09-18
[PATCH v2 11/30] cxlflash: Make functions static · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 11/30] cxlflash: Make functions static · Brian King <hidden> · 2015-09-18
Re: [PATCH v2 11/30] cxlflash: Make functions static · Tomas Henzl <hidden> · 2015-09-21
Re: [PATCH v2 11/30] cxlflash: Make functions static · Matthew R. Ochs <hidden> · 2015-09-21
[PATCH v2 12/30] cxlflash: Refine host/device attributes · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 12/30] cxlflash: Refine host/device attributes · Brian King <hidden> · 2015-09-18
Re: [PATCH v2 12/30] cxlflash: Refine host/device attributes · Matthew R. Ochs <hidden> · 2015-09-18
RE: [PATCH v2 12/30] cxlflash: Refine host/device attributes · David Laight <hidden> · 2015-09-21
[PATCH v2 13/30] cxlflash: Fix to avoid spamming the kernel log · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 13/30] cxlflash: Fix to avoid spamming the kernel log · Brian King <hidden> · 2015-09-18
[PATCH v2 14/30] cxlflash: Fix to avoid stall while waiting on TMF · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 14/30] cxlflash: Fix to avoid stall while waiting on TMF · Brian King <hidden> · 2015-09-21
Re: [PATCH v2 14/30] cxlflash: Fix to avoid stall while waiting on TMF · Matthew R. Ochs <hidden> · 2015-09-21
[PATCH v2 15/30] cxlflash: Fix location of setting resid · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 15/30] cxlflash: Fix location of setting resid · Brian King <hidden> · 2015-09-21
[PATCH v2 16/30] cxlflash: Fix host link up event handling · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 16/30] cxlflash: Fix host link up event handling · Brian King <hidden> · 2015-09-21
[PATCH v2 17/30] cxlflash: Fix async interrupt bypass logic · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 17/30] cxlflash: Fix async interrupt bypass logic · Brian King <hidden> · 2015-09-21
[PATCH v2 18/30] cxlflash: Remove dual port online dependency · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 18/30] cxlflash: Remove dual port online dependency · Brian King <hidden> · 2015-09-21
Re: [PATCH v2 18/30] cxlflash: Remove dual port online dependency · Matthew R. Ochs <hidden> · 2015-09-22
Re: [PATCH v2 18/30] cxlflash: Remove dual port online dependency · Brian King <hidden> · 2015-09-22
[PATCH v2 19/30] cxlflash: Fix AFU version access/storage and add check · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 19/30] cxlflash: Fix AFU version access/storage and add check · Brian King <hidden> · 2015-09-22
[PATCH v2 20/30] cxlflash: Correct usage of scsi_host_put() · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 20/30] cxlflash: Correct usage of scsi_host_put() · Brian King <hidden> · 2015-09-22
Re: [PATCH v2 20/30] cxlflash: Correct usage of scsi_host_put() · Matthew R. Ochs <hidden> · 2015-09-22
[PATCH v2 21/30] cxlflash: Fix to prevent workq from accessing freed memory · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 21/30] cxlflash: Fix to prevent workq from accessing freed memory · Tomas Henzl <hidden> · 2015-09-21
Re: [PATCH v2 21/30] cxlflash: Fix to prevent workq from accessing freed memory · Matthew R. Ochs <hidden> · 2015-09-21
[PATCH v2 22/30] cxlflash: Correct behavior in device reset handler following EEH · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 22/30] cxlflash: Correct behavior in device reset handler following EEH · Brian King <hidden> · 2015-09-22
[PATCH v2 23/30] cxlflash: Remove unnecessary scsi_block_requests · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 23/30] cxlflash: Remove unnecessary scsi_block_requests · Brian King <hidden> · 2015-09-22
[PATCH v2 24/30] cxlflash: Fix function prolog parameters and return codes · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 24/30] cxlflash: Fix function prolog parameters and return codes · Brian King <hidden> · 2015-09-22
[PATCH v2 25/30] cxlflash: Fix MMIO and endianness errors · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 25/30] cxlflash: Fix MMIO and endianness errors · Brian King <hidden> · 2015-09-23
[PATCH v2 26/30] cxlflash: Fix to prevent EEH recovery failure · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 26/30] cxlflash: Fix to prevent EEH recovery failure · Brian King <hidden> · 2015-09-23
[PATCH v2 27/30] cxlflash: Correct spelling, grammar, and alignment mistakes · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 27/30] cxlflash: Correct spelling, grammar, and alignment mistakes · Brian King <hidden> · 2015-09-23
[PATCH v2 28/30] cxlflash: Fix to prevent stale AFU RRQ · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 28/30] cxlflash: Fix to prevent stale AFU RRQ · Brian King <hidden> · 2015-09-23
[PATCH v2 30/30] MAINTAINERS: Add cxlflash driver · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 30/30] MAINTAINERS: Add cxlflash driver · Brian King <hidden> · 2015-09-23
[PATCH v2 29/30] cxlflash: Fix to avoid state change collision · Matthew R. Ochs <hidden> · 2015-09-16
Re: [PATCH v2 29/30] cxlflash: Fix to avoid state change collision · Tomas Henzl <hidden> · 2015-09-21
Re: [PATCH v2 29/30] cxlflash: Fix to avoid state change collision · Matthew R. Ochs <hidden> · 2015-09-21

Re: [PATCH v2 14/30] cxlflash: Fix to avoid stall while waiting on TMF

From: Brian King <hidden>
Date: 2015-09-21 18:25:22
Also in: linux-scsi

On 09/16/2015 04:30 PM, Matthew R. Ochs wrote:

Borrowing the TMF waitq's spinlock causes a stall condition when
waiting for the TMF to complete. To remedy, introduce our own spin
lock to serialize TMF and use the appropriate wait services.

Can you clarify what stall condition you were seeing. Its not obvious
to me what this fixes. Do you have softlockup logs from the failure?

-Brian

-- 
Brian King
Power Linux I/O
IBM Linux Technology Center

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