1. 08 Feb, 2015 37 commits
  2. 02 Feb, 2015 3 commits
    • Nicholas Bellinger's avatar
      target: Drop arbitrary maximum I/O size limit · d99060df
      Nicholas Bellinger authored
      commit 046ba642 upstream.
      
      This patch drops the arbitrary maximum I/O size limit in sbc_parse_cdb(),
      which currently for fabric_max_sectors is hardcoded to 8192 (4 MB for 512
      byte sector devices), and for hw_max_sectors is a backend driver dependent
      value.
      
      This limit is problematic because Linux initiators have only recently
      started to honor block limits MAXIMUM TRANSFER LENGTH, and other non-Linux
      based initiators (eg: MSFT Fibre Channel) can also generate I/Os larger
      than 4 MB in size.
      
      Currently when this happens, the following message will appear on the
      target resulting in I/Os being returned with non recoverable status:
      
        SCSI OP 28h with too big sectors 16384 exceeds fabric_max_sectors: 8192
      
      Instead, drop both [fabric,hw]_max_sector checks in sbc_parse_cdb(),
      and convert the existing hw_max_sectors into a purely informational
      attribute used to represent the granuality that backend driver and/or
      subsystem code is splitting I/Os upon.
      
      Also, update FILEIO with an explicit FD_MAX_BYTES check in fd_execute_rw()
      to deal with the one special iovec limitiation case.
      
      v2 changes:
        - Drop hw_max_sectors check in sbc_parse_cdb()
      Reported-by: default avatarLance Gropper <lance.gropper@qosserver.com>
      Reported-by: default avatarStefan Priebe <s.priebe@profihost.ag>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Martin K. Petersen <martin.petersen@oracle.com>
      Cc: Roland Dreier <roland@purestorage.com>
      Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
      Signed-off-by: default avatarJiri Slaby <jslaby@suse.cz>
      d99060df
    • Hannes Reinecke's avatar
      tcm_loop: Fix wrong I_T nexus association · dddbc77e
      Hannes Reinecke authored
      commit 506787a2 upstream.
      
      tcm_loop has the I_T nexus associated with the HBA. This causes
      commands to become misdirected if the HBA has more than one
      target portal group; any command is then being sent to the
      first target portal group instead of the correct one.
      
      The nexus needs to be associated with the target portal group
      instead.
      Signed-off-by: default avatarHannes Reinecke <hare@suse.de>
      Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
      Signed-off-by: default avatarJiri Slaby <jslaby@suse.cz>
      dddbc77e
    • Heiko Carstens's avatar
      ipc/compat_sys_msgrcv: change msgtyp type from long to compat_long_t · 4602761b
      Heiko Carstens authored
      commit 291fdb0b upstream.
      
      Change the type of compat_sys_msgrcv's msgtyp parameter from long
      to compat_long_t, since compat user space passes only a 32 bit signed
      value.
      Let the compat wrapper do proper sign extension to 64 bit of this
      parameter.
      Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
      Signed-off-by: default avatarJiri Slaby <jslaby@suse.cz>
      4602761b