1. 23 Apr, 2016 6 commits
  2. 19 Apr, 2016 1 commit
  3. 18 Apr, 2016 1 commit
  4. 17 Apr, 2016 5 commits
  5. 16 Apr, 2016 7 commits
  6. 15 Apr, 2016 17 commits
  7. 14 Apr, 2016 3 commits
    • Mike Snitzer's avatar
      dm cache metadata: fix READ_LOCK macros and cleanup WRITE_LOCK macros · 9567366f
      Mike Snitzer authored
      The READ_LOCK macro was incorrectly returning -EINVAL if
      dm_bm_is_read_only() was true -- it will always be true once the cache
      metadata transitions to read-only by dm_cache_metadata_set_read_only().
      
      Wrap READ_LOCK and WRITE_LOCK multi-statement macros in do {} while(0).
      Also, all accesses of the 'cmd' argument passed to these related macros
      are now encapsulated in parenthesis.
      
      A follow-up patch can be developed to eliminate the use of macros in
      favor of pure C code.  Avoiding that now given that this needs to apply
      to stable@.
      Reported-by: default avatarBen Hutchings <ben@decadent.org.uk>
      Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
      Fixes: d14fcf3d ("dm cache: make sure every metadata function checks fail_io")
      Cc: stable@vger.kernel.org
      9567366f
    • Keith Busch's avatar
      NVMe: Always use MSI/MSI-x interrupts · a5229050
      Keith Busch authored
      Multiple users have reported device initialization failure due the driver
      not receiving legacy PCI interrupts. This is not unique to any particular
      controller, but has been observed on multiple platforms.
      
      There have been no issues reported or observed when with message signaled
      interrupts, so this patch attempts to use MSI-x during initialization,
      falling back to MSI. If that fails, legacy would become the default.
      
      The setup_io_queues error handling had to change as a result: the admin
      queue's msix_entry used to be initialized to the legacy IRQ. The case
      where nr_io_queues is 0 would fail request_irq when setting up the admin
      queue's interrupt since re-enabling MSI-x fails with 0 vectors, leaving
      the admin queue's msix_entry invalid. Instead, return success immediately.
      Reported-by: default avatarTim Muhlemmer <muhlemmer@gmail.com>
      Reported-by: default avatarJon Derrick <jonathan.derrick@intel.com>
      Signed-off-by: default avatarKeith Busch <keith.busch@intel.com>
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      a5229050
    • Linus Torvalds's avatar
      /proc/iomem: only expose physical resource addresses to privileged users · 51d7b120
      Linus Torvalds authored
      In commit c4004b02 ("x86: remove the kernel code/data/bss resources
      from /proc/iomem") I was hoping to remove the phyiscal kernel address
      data from /proc/iomem entirely, but that had to be reverted because some
      system programs actually use it.
      
      This limits all the detailed resource information to properly
      credentialed users instead.
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      51d7b120