1. 27 5月, 2007 29 次提交
  2. 24 5月, 2007 7 次提交
  3. 23 5月, 2007 2 次提交
  4. 22 5月, 2007 2 次提交
    • S
      [SCSI] aacraid: add support for FUA · 9d399cc7
      Salyzyn, Mark 提交于
      Back in the beginning of last year we disabled mode page 8 and mode page
      3f requests through device quirk bits instead of enhancing the driver to
      respond to these mode pages because there was no apparent added value.
      
      The Firmware that supports the new communication commands supports the
      ability to force a write around of the adapter cache on a command by
      command basis. In the attached patch we enable mode page 8 and 3f and
      spoof the results as needed in order to *convince* the layers above to
      submit writes with the FUA (Force Unit Attention) bit set if the file
      system or application requires it, if the Firmware supports the write
      through, or instead to submit a SYNCHRONIZE_CACHE if the Firmware does
      not. The added value here is for file systems that benefit from this
      functionality and for clustering or redundancy scenarios.
      
      Caveats: By convince, we are responding with a minimal short 3 byte
      content mode page 8, with only the data the SCSI layer needs and that we
      can fill confidently. Applications that require the customarily larger
      mode page 8 results may be confused by this(?). The FUA, or the
      SYNCHRONIZE_CACHE only affect the cache on the controller. Our firmware
      by default ensure that the underlying physical drives of the array have
      their cache turned off so normally this is not a problem.
      
      This attached patch is against current scsi-misc-2.6 and was unit tested
      on RHEL5. Since this is a feature enhancement, it should not be
      considered for any current stabilization efforts.
      Signed-off-by: NMark Salyzyn <aacraid@adaptec.com>
      Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
      9d399cc7
    • C
      [SCSI] aha152x: use wait_for_completion_timeout · 0f06bb34
      Christoph Hellwig 提交于
      Use wait_for_completion_timeout instead a semaphore + timer.
      Signed-off-by: NChristoph Hellwig <hch@lst.de>
      Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
      0f06bb34