1. 27 10月, 2017 1 次提交
  2. 26 8月, 2017 1 次提交
    • S
      virtio_blk: fix incorrect message when disk is resized · 1046d304
      Stefan Hajnoczi 提交于
      The message printed on disk resize is incorrect.  The following is
      printed when resizing to 2 GiB:
      
        $ truncate -s 1G test.img
        $ qemu -device virtio-blk-pci,logical_block_size=4096,...
        (qemu) block_resize drive1 2G
      
        virtio_blk virtio0: new size: 4194304 4096-byte logical blocks (17.2 GB/16.0 GiB)
      
      The virtio_blk capacity config field is in 512-byte sector units
      regardless of logical_block_size as per the VIRTIO specification.
      Therefore the message should read:
      
        virtio_blk virtio0: new size: 524288 4096-byte logical blocks (2.15 GB/2.0 GiB)
      
      Note that this only affects the printed message.  Thankfully the actual
      block device has the correct size because the block layer expects
      capacity in sectors.
      Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
      Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
      1046d304
  3. 18 8月, 2017 1 次提交
  4. 25 7月, 2017 1 次提交
  5. 06 7月, 2017 1 次提交
  6. 28 6月, 2017 1 次提交
  7. 09 6月, 2017 2 次提交
    • C
      blk-mq: switch ->queue_rq return value to blk_status_t · fc17b653
      Christoph Hellwig 提交于
      Use the same values for use for request completion errors as the return
      value from ->queue_rq.  BLK_STS_RESOURCE is special cased to cause
      a requeue, and all the others are completed as-is.
      Signed-off-by: NChristoph Hellwig <hch@lst.de>
      Signed-off-by: NJens Axboe <axboe@fb.com>
      fc17b653
    • C
      block: introduce new block status code type · 2a842aca
      Christoph Hellwig 提交于
      Currently we use nornal Linux errno values in the block layer, and while
      we accept any error a few have overloaded magic meanings.  This patch
      instead introduces a new  blk_status_t value that holds block layer specific
      status codes and explicitly explains their meaning.  Helpers to convert from
      and to the previous special meanings are provided for now, but I suspect
      we want to get rid of them in the long run - those drivers that have a
      errno input (e.g. networking) usually get errnos that don't know about
      the special block layer overloads, and similarly returning them to userspace
      will usually return somethings that strictly speaking isn't correct
      for file system operations, but that's left as an exercise for later.
      
      For now the set of errors is a very limited set that closely corresponds
      to the previous overloaded errno values, but there is some low hanging
      fruite to improve it.
      
      blk_status_t (ab)uses the sparse __bitwise annotations to allow for sparse
      typechecking, so that we can easily catch places passing the wrong values.
      Signed-off-by: NChristoph Hellwig <hch@lst.de>
      Signed-off-by: NJens Axboe <axboe@fb.com>
      2a842aca
  8. 03 5月, 2017 1 次提交
  9. 02 5月, 2017 1 次提交
  10. 21 4月, 2017 5 次提交
  11. 31 3月, 2017 1 次提交
  12. 28 2月, 2017 2 次提交
  13. 01 2月, 2017 3 次提交
  14. 28 1月, 2017 1 次提交
  15. 14 1月, 2017 1 次提交
    • P
      locking/atomic, kref: Add kref_read() · 2c935bc5
      Peter Zijlstra 提交于
      Since we need to change the implementation, stop exposing internals.
      
      Provide kref_read() to read the current reference count; typically
      used for debug messages.
      
      Kills two anti-patterns:
      
      	atomic_read(&kref->refcount)
      	kref->refcount.counter
      Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: linux-kernel@vger.kernel.org
      Signed-off-by: NIngo Molnar <mingo@kernel.org>
      2c935bc5
  16. 11 1月, 2017 2 次提交
  17. 31 10月, 2016 2 次提交
  18. 15 9月, 2016 1 次提交
  19. 09 8月, 2016 1 次提交
  20. 21 7月, 2016 2 次提交
  21. 28 6月, 2016 1 次提交
    • D
      block: convert to device_add_disk() · 0d52c756
      Dan Williams 提交于
      For block drivers that specify a parent device, convert them to use
      device_add_disk().
      
      This conversion was done with the following semantic patch:
      
          @@
          struct gendisk *disk;
          expression E;
          @@
      
          - disk->driverfs_dev = E;
          ...
          - add_disk(disk);
          + device_add_disk(E, disk);
      
          @@
          struct gendisk *disk;
          expression E1, E2;
          @@
      
          - disk->driverfs_dev = E1;
          ...
          E2 = disk;
          ...
          - add_disk(E2);
          + device_add_disk(E1, E2);
      
      ...plus some manual fixups for a few missed conversions.
      
      Cc: Jens Axboe <axboe@fb.com>
      Cc: Keith Busch <keith.busch@intel.com>
      Cc: Michael S. Tsirkin <mst@redhat.com>
      Cc: David Woodhouse <dwmw2@infradead.org>
      Cc: David S. Miller <davem@davemloft.net>
      Cc: James Bottomley <James.Bottomley@hansenpartnership.com>
      Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
      Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      Cc: Martin K. Petersen <martin.petersen@oracle.com>
      Reviewed-by: NChristoph Hellwig <hch@lst.de>
      Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
      Signed-off-by: NDan Williams <dan.j.williams@intel.com>
      0d52c756
  22. 08 6月, 2016 1 次提交
  23. 13 4月, 2016 1 次提交
  24. 02 3月, 2016 1 次提交
  25. 01 10月, 2015 1 次提交
  26. 08 9月, 2015 2 次提交
  27. 06 5月, 2015 1 次提交
  28. 11 4月, 2015 1 次提交
    • J
      sd, mmc, virtio_blk, string_helpers: fix block size units · b9f28d86
      James Bottomley 提交于
      The current string_get_size() overflows when the device size goes over
      2^64 bytes because the string helper routine computes the suffix from
      the size in bytes.  However, the entirety of Linux thinks in terms of
      blocks, not bytes, so this will artificially induce an overflow on very
      large devices.  Fix this by making the function string_get_size() take
      blocks and the block size instead of bytes.  This should allow us to
      keep working until the current SCSI standard overflows.
      
      Also fix virtio_blk and mmc (both of which were also artificially
      multiplying by the block size to pass a byte side to string_get_size()).
      
      The mathematics of this is pretty simple:  we're taking a product of
      size in blocks (S) and block size (B) and trying to re-express this in
      exponential form: S*B = R*N^E (where N, the exponent is either 1000 or
      1024) and R < N.  Mathematically, S = RS*N^ES and B=RB*N^EB, so if RS*RB
      < N it's easy to see that S*B = RS*RB*N^(ES+EB).  However, if RS*BS > N,
      we can see that this can be re-expressed as RS*BS = R*N (where R =
      RS*BS/N < N) so the whole exponent becomes R*N^(ES+EB+1)
      
      [jejb: fix incorrect 32 bit do_div spotted by kbuild test robot <fengguang.wu@intel.com>]
      Acked-by: NUlf Hansson <ulf.hansson@linaro.org>
      Reviewed-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NJames Bottomley <JBottomley@Odin.com>
      b9f28d86