storvsc: ring buffer failures may result in I/O freeze

Browse source

commit e86fb5e8ab upstream.

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>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

...

This commit is contained in:

Long Li 2014-12-05 19:38:18 -08:00 • committed by Luis Henriques

parent e144f66438

commit 63a6003622

1 changed files with 3 additions and 4 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

7

drivers/scsi/storvsc_drv.c

View file