1. 04 1月, 2012 2 次提交
  2. 01 8月, 2011 1 次提交
  3. 16 9月, 2010 1 次提交
  4. 10 9月, 2010 1 次提交
  5. 29 4月, 2010 1 次提交
  6. 04 12月, 2009 1 次提交
  7. 03 10月, 2009 1 次提交
  8. 11 9月, 2009 1 次提交
    • J
      block: add blk-iopoll, a NAPI like approach for block devices · 5e605b64
      Jens Axboe 提交于
      This borrows some code from NAPI and implements a polled completion
      mode for block devices. The idea is the same as NAPI - instead of
      doing the command completion when the irq occurs, schedule a dedicated
      softirq in the hopes that we will complete more IO when the iopoll
      handler is invoked. Devices have a budget of commands assigned, and will
      stay in polled mode as long as they continue to consume their budget
      from the iopoll softirq handler. If they do not, the device is set back
      to interrupt completion mode.
      
      This patch holds the core bits for blk-iopoll, device driver support
      sold separately.
      Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
      5e605b64
  9. 01 7月, 2009 1 次提交
    • J
      block: get rid of queue-private command filter · 018e0446
      Jens Axboe 提交于
      The initial patches to support this through sysfs export were broken
      and have been if 0'ed out in any release. So lets just kill the code
      and reclaim some space in struct request_queue, if anyone would later
      like to fixup the sysfs bits, the git history can easily restore
      the removed bits.
      Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
      018e0446
  10. 09 2月, 2009 1 次提交
  11. 09 10月, 2008 2 次提交
  12. 03 7月, 2008 2 次提交
  13. 30 1月, 2008 4 次提交
  14. 12 10月, 2007 1 次提交
  15. 10 10月, 2007 1 次提交
  16. 16 7月, 2007 1 次提交
  17. 01 10月, 2006 1 次提交
    • D
      [PATCH] BLOCK: Make it possible to disable the block layer [try #6] · 9361401e
      David Howells 提交于
      Make it possible to disable the block layer.  Not all embedded devices require
      it, some can make do with just JFFS2, NFS, ramfs, etc - none of which require
      the block layer to be present.
      
      This patch does the following:
      
       (*) Introduces CONFIG_BLOCK to disable the block layer, buffering and blockdev
           support.
      
       (*) Adds dependencies on CONFIG_BLOCK to any configuration item that controls
           an item that uses the block layer.  This includes:
      
           (*) Block I/O tracing.
      
           (*) Disk partition code.
      
           (*) All filesystems that are block based, eg: Ext3, ReiserFS, ISOFS.
      
           (*) The SCSI layer.  As far as I can tell, even SCSI chardevs use the
           	 block layer to do scheduling.  Some drivers that use SCSI facilities -
           	 such as USB storage - end up disabled indirectly from this.
      
           (*) Various block-based device drivers, such as IDE and the old CDROM
           	 drivers.
      
           (*) MTD blockdev handling and FTL.
      
           (*) JFFS - which uses set_bdev_super(), something it could avoid doing by
           	 taking a leaf out of JFFS2's book.
      
       (*) Makes most of the contents of linux/blkdev.h, linux/buffer_head.h and
           linux/elevator.h contingent on CONFIG_BLOCK being set.  sector_div() is,
           however, still used in places, and so is still available.
      
       (*) Also made contingent are the contents of linux/mpage.h, linux/genhd.h and
           parts of linux/fs.h.
      
       (*) Makes a number of files in fs/ contingent on CONFIG_BLOCK.
      
       (*) Makes mm/bounce.c (bounce buffering) contingent on CONFIG_BLOCK.
      
       (*) set_page_dirty() doesn't call __set_page_dirty_buffers() if CONFIG_BLOCK
           is not enabled.
      
       (*) fs/no-block.c is created to hold out-of-line stubs and things that are
           required when CONFIG_BLOCK is not set:
      
           (*) Default blockdev file operations (to give error ENODEV on opening).
      
       (*) Makes some /proc changes:
      
           (*) /proc/devices does not list any blockdevs.
      
           (*) /proc/diskstats and /proc/partitions are contingent on CONFIG_BLOCK.
      
       (*) Makes some compat ioctl handling contingent on CONFIG_BLOCK.
      
       (*) If CONFIG_BLOCK is not defined, makes sys_quotactl() return -ENODEV if
           given command other than Q_SYNC or if a special device is specified.
      
       (*) In init/do_mounts.c, no reference is made to the blockdev routines if
           CONFIG_BLOCK is not defined.  This does not prohibit NFS roots or JFFS2.
      
       (*) The bdflush, ioprio_set and ioprio_get syscalls can now be absent (return
           error ENOSYS by way of cond_syscall if so).
      
       (*) The seclvl_bd_claim() and seclvl_bd_release() security calls do nothing if
           CONFIG_BLOCK is not set, since they can't then happen.
      Signed-Off-By: NDavid Howells <dhowells@redhat.com>
      Signed-off-by: NJens Axboe <axboe@kernel.dk>
      9361401e
  18. 24 3月, 2006 1 次提交
  19. 04 11月, 2005 1 次提交