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(parent: 60654e2) | patch
storvsc: ring buffer failures may result in I/O freeze
authorLong Li <longli@microsoft.com>
Sat, 6 Dec 2014 03:38:18 +0000 (19:38 -0800)
committerChristoph Hellwig <hch@lst.de>
Mon, 15 Dec 2014 12:34:29 +0000 (13:34 +0100)
commite86fb5e8ab95f10ec5f2e9430119d5d35020c951
tree248e8524421e7f1319c0e2955fcf6fbf6a796476tree | snapshot
parent60654e250cd32d4315401a468ea779dfe5aed2a9commit | diff
storvsc: ring buffer failures may result in I/O freeze

When ring buffer returns an error indicating retry, storvsc may not
return a proper error code to SCSI when bounce buffer is not used.
This has introduced I/O freeze on RAID running atop storvsc devices.
This patch fixes it by always returning a proper error code.

Signed-off-by: Long Li <longli@microsoft.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
cc: stable@vger.kernel.org
drivers/scsi/storvsc_drv.c diff | blob | history
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