From: Nicholas Bellinger Date: Sun, 6 May 2012 19:59:45 +0000 (-0700) Subject: target: Enforce hw_max_sectors for SCF_SCSI_DATA_SG_IO_CDB X-Git-Tag: v3.5-rc1~174^2~10 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7b4deef5d9a1fa74ccfbd07b4cfe795ee18fceca;p=pandora-kernel.git target: Enforce hw_max_sectors for SCF_SCSI_DATA_SG_IO_CDB Instead of depending upon a max_sectors value that may be set via configfs based upon original HW queue limitations, go ahead and convert to using the hw_max_sectors reported by the backend device in order to determine when to reject an I/O's who's sector count exceeds what is supported by the backend with a single se_cmd descriptor. It addresses a potential case where se_dev_attrib.max_sectors for IBLOCK backends has already been set via queue_max_sectors() to something small like max_sectors=32 (LVM, DRBD may do this), resulting typically sized SCF_SCSI_DATA_SG_IO_CDB to be incorrectly rejected with invalid_cdb_field in transport_generic_cmd_sequencer(). Reviewed-by: Christoph Hellwig Cc: Roland Dreier Cc: Andy Grover Signed-off-by: Nicholas Bellinger --- Reading git-diff-tree failed