• Linus Torvalds's avatar
    Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · bfa8f186
    Linus Torvalds authored
    Pull more SCSI updates from James Bottomley:
     "The vfs has long had a write lifetime hint mechanism that gives the
      expected longevity on storage of the data being written. f2fs was the
      original consumer of this and used the hint for flash data placement
      (mostly to avoid write amplification by placing objects with similar
      lifetimes in the same erase block).
    
      More recently the SCSI based UFS (Universal Flash Storage) drivers
      have wanted to take advantage of this as well, for the same reasons as
      f2fs, necessitating plumbing the write hints through the block layer
      and then adding it to the SCSI core.
    
      The vfs write_hints already taken plumbs this as far as block and this
      completes the SCSI core enabling based on a recently agreed reuse of
      the old write command group number. The additions to the scsi_debug
      driver are for emulating this property so we can run tests on it in
      the absence of an actual UFS device"
    
    * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
      scsi: scsi_debug: Maintain write statistics per group number
      scsi: scsi_debug: Implement GET STREAM STATUS
      scsi: scsi_debug: Implement the IO Advice Hints Grouping mode page
      scsi: scsi_debug: Allocate the MODE SENSE response from the heap
      scsi: scsi_debug: Rework subpage code error handling
      scsi: scsi_debug: Rework page code error handling
      scsi: scsi_debug: Support the block limits extension VPD page
      scsi: scsi_debug: Reduce code duplication
      scsi: sd: Translate data lifetime information
      scsi: scsi_proto: Add structures and constants related to I/O groups and streams
      scsi: core: Query the Block Limits Extension VPD page
    bfa8f186
scsi_device.h 23.7 KB