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dm mpath: retry BLK_STS_RESOURCE errors 

Retry requests instead of failing them if an out-of-memory error occurs
or the block driver below dm-mpath is busy.  This restores the v4.12
behavior of noretry_error(), namely that -ENOMEM results in a retry.

Fixes: 2a842acab1 ("block: introduce new block status code type")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Bart Van Assche 2017-08-09 11:32:15 -07:00 committed by Mike Snitzer
parent 54385bf75c
commit 68515cc721
1 changed files with 0 additions and 1 deletions
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drivers/md/dm-mpath.c
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@ -1458,7 +1458,6 @@ static int noretry_error(blk_status_t error)
case BLK_STS_TARGET:
case BLK_STS_NEXUS:
case BLK_STS_MEDIUM:
case BLK_STS_RESOURCE:
return 1;
}