lkml.org 
[lkml]   [2014]   [Dec]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectRe: [PATCH] scsi:storvsc enable reading from VPD pages on SPC-2
    From
    Date
    >>>>> "Long" == Long Li <longli@microsoft.com> writes:

    >> Handle the issues or handle WRITE SAME(10/16)?

    Long> With this patch, the SCSI layer will be able to correctly send
    Long> WRITE_SAME_16 to the Hyper-V host. It will not send WRITE_SAME_10:
    Long> it has been disabled in the driver template. Do you want me to
    Long> send another patch with these details?

    no_write_same prevents us from attempting to use WRITE SAME(10/16) to
    zero block ranges.

    This is completely orthogonal to using the WRITE SAME(10/16) commands
    with the UNMAP bit set to discard block ranges. The latter is controlled
    by the logical block provisioning heuristics and is not affected by
    no_write_same at all.

    --
    Martin K. Petersen Oracle Linux Engineering


    \
     
     \ /
      Last update: 2014-12-12 04:41    [W:4.012 / U:0.892 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site