1. 09 Jan, 2015 39 commits
  2. 05 Jan, 2015 1 commit
    • Bruno Prémont's avatar
      qla2xxx: fix busy wait regression · 975f7d46
      Bruno Prémont authored
      Commit e05fe292 (qla2xxx: Honor FCP_RSP retry delay timer field.)
      causes systems to busy-wait for about 3 minutes after boot prior to
      detecting SAN disks.
      
      During this wait period one kworker is running full-time
      (though /proc/<pid>/stack has no useful data). Another kworker is
      waiting for IO to complete during that whole time period.
      
      Looking at drivers/scsi/qla2xxx/qla_os.c, fcport->retry_delay_timestamp
      has a special value of 0 though that 0 value forces system to wait when
      jiffies is very large value (e.g. 4294952605 - "negative" value when
      signed on 32bit systems).
      Signed-off-by: default avatarBruno Prémont <bonbons@linux-vserver.org>
      Acked-by: default avatarChad Dupuis <chad.dupuis@qlogic.com>
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      975f7d46