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authorRoland Dreier <roland@purestorage.com>2011-11-22 13:51:32 -0800
committerNicholas Bellinger <nab@linux-iscsi.org>2011-12-06 06:00:55 +0000
commit410f670202f0f13cdac8459b9c3effeeead135d1 (patch)
treedfad1b29759c54f4ce5141f6d15b8f3d18d00b6e /net
parent1c3d5794fc4a2afd2258b3aa6406377934a36663 (diff)
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target: Don't return an error status for 0-length READ and WRITE
IO commands with a TRANSFER LENGTH of 0 are not an error; for example, for READ (10) and WRITE (10), SBC-3 says: A TRANSFER LENGTH field set to zero specifies that no logical blocks shall be read. This condition shall not be considered an error. In case we have nothing to do, just complete the command with good status. Signed-off-by: Roland Dreier <roland@purestorage.com> Cc: stable@kernel.org Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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