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  1. 01 Oct, 2006 28 commits
  3. 30 Sep, 2006 12 commits
    • Linus Torvalds's avatar
      Merge branch 'block' of git://brick.kernel.dk/data/git/linux-2.6-block · cfae3580
      Linus Torvalds authored 
      * 'block' of git://brick.kernel.dk/data/git/linux-2.6-block:
  [PATCH] Only enable CONFIG_BLOCK option for embedded
      cfae3580
    • Jens Axboe's avatar
      [PATCH] Only enable CONFIG_BLOCK option for embedded · 51d7513a
      Jens Axboe authored 
      It's too easy for people to shoot themselves in the foot, and it
only makes sense for embedded folks anyway.
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      51d7513a
    • Linus Torvalds's avatar
      Merge branch 'block' of git://brick.kernel.dk/data/git/linux-2.6-block · 56f29d7f
      Linus Torvalds authored 
      * 'block' of git://brick.kernel.dk/data/git/linux-2.6-block: (67 commits)
  [PATCH] blk_queue_start_tag() shared map race fix
  [PATCH] Update axboe@suse.de email address
  [PATCH] fix creating zero sized bio mempools in low memory system
  [PATCH] CONFIG_BLOCK: blk_congestion_wait() fix
  [PATCH] CONFIG_BLOCK internal.h cleanups
  [PATCH] BLOCK: Make USB storage depend on SCSI rather than selecting it [try #6]
  [PATCH] BLOCK: Make it possible to disable the block layer [try #6]
  [PATCH] BLOCK: Remove no-longer necessary linux/buffer_head.h inclusions [try #6]
  [PATCH] BLOCK: Remove no-longer necessary linux/mpage.h inclusions [try #6]
  [PATCH] BLOCK: Move the msdos device ioctl compat stuff to the msdos driver [try #6]
  [PATCH] BLOCK: Move the Ext3 device ioctl compat stuff to the Ext3 driver [try #6]
  [PATCH] BLOCK: Move the Ext2 device ioctl compat stuff to the Ext2 driver [try #6]
  [PATCH] BLOCK: Move the ReiserFS device ioctl compat stuff to the ReiserFS driver [try #6]
  [PATCH] BLOCK: Move common FS-specific ioctls to linux/fs.h [try #6]
  [PATCH] BLOCK: Move the loop device ioctl compat stuff to the loop driver [try #6]
  [PATCH] BLOCK: Move __invalidate_device() to block_dev.c [try #6]
  [PATCH] BLOCK: Dissociate generic_writepages() from mpage stuff [try #6]
  [PATCH] BLOCK: Remove dependence on existence of blockdev_superblock [try #6]
  [PATCH] BLOCK: Move extern declarations out of fs/*.c into header files [try #6]
  [PATCH] BLOCK: Don't call block_sync_page() from AFS [try #6]
  ...
      56f29d7f
    • Jens Axboe's avatar
      [PATCH] blk_queue_start_tag() shared map race fix · 059af497
      Jens Axboe authored 
      If we share the tag map between two or more queues, then we cannot
use __set_bit() to set the bit. In fact we need to make sure we
atomically acquire this tag, so loop using test_and_set_bit() to
protect from that.

Noticed by Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      059af497
    • Jens Axboe's avatar
      [PATCH] Update axboe@suse.de email address · 0fe23479
      Jens Axboe authored 
      As people often look for the copyright in files to see who to mail,
update the link to a neutral one.
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      0fe23479
    • Milan Broz's avatar
      [PATCH] fix creating zero sized bio mempools in low memory system · 50be3455
      Milan Broz authored 
      In the very low memory systems is in the init_bio call
scale parameter set to zero and it leads to creating
zero sized mempool.

This patch prevents pool_entries parameter become zero,
so the created pool have at least 1 entry.

Mempool with 0 entries lead to incorrect behaviour
of mempool_free. (Alloc requests are not waken up
and system stalls in mempool_alloc->ioschedule).
Signed-off-by: default avatarMilan Broz <mbroz@redhat.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      50be3455
    • Andrew Morton's avatar
      [PATCH] CONFIG_BLOCK: blk_congestion_wait() fix · bcfd8d36
      Andrew Morton authored 
      Don't just do nothing: it'll cause busywaits all over writeback and page
reclaim.

For now, take a fixed-length nap.  Will improve when NFS starts waking up
throttled processes.
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      bcfd8d36
    • Andrew Morton's avatar
      [PATCH] CONFIG_BLOCK internal.h cleanups · 5e6d12b2
      Andrew Morton authored 
      - forward declare struct superblock
- use inlines, not macros
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      5e6d12b2
    • David Howells's avatar
      [PATCH] BLOCK: Make USB storage depend on SCSI rather than selecting it [try #6] · 65934a9a
      David Howells authored 
      This makes CONFIG_USB_STORAGE depend on CONFIG_SCSI rather than selecting it,
as selecting it makes CONFIG_USB_STORAGE override the dependencies of SCSI,
causing it to turn on even if they aren't all met.
Signed-Off-By: default avatarDavid Howells <dhowells@redhat.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      65934a9a
    • David Howells's avatar
      [PATCH] BLOCK: Make it possible to disable the block layer [try #6] · 9361401e
      David Howells authored 
      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: default avatarDavid Howells <dhowells@redhat.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      9361401e
    • David Howells's avatar
      [PATCH] BLOCK: Remove no-longer necessary linux/buffer_head.h inclusions [try #6] · d366e40a
      David Howells authored 
      Remove inclusions of linux/buffer_head.h that are no longer necessary due to the
transfer of a number of things out of there.
Signed-Off-By: default avatarDavid Howells <dhowells@redhat.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      d366e40a
    • David Howells's avatar
      [PATCH] BLOCK: Remove no-longer necessary linux/mpage.h inclusions [try #6] · 4cb50dc2
      David Howells authored 
      Remove inclusions of linux/mpage.h that are no longer necessary due to the
transfer of generic_writepages().
Signed-Off-By: default avatarDavid Howells <dhowells@redhat.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      4cb50dc2
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