1. 27 Feb, 2016 1 commit
  2. 27 Sep, 2014 1 commit
  3. 30 Sep, 2013 1 commit
    • Paul Gortmaker's avatar
      block: change config option name for cmdline partition parsing · 080506ad
      Paul Gortmaker authored
      Recently commit bab55417 ("block: support embedded device command
      line partition") introduced CONFIG_CMDLINE_PARSER.  However, that name
      is too generic and sounds like it enables/disables generic kernel boot
      arg processing, when it really is block specific.
      Before this option becomes a part of a full/final release, add the BLK_
      prefix to it so that it is clear in absence of any other context that it
      is block specific.
      In addition, fix up the following less critical items:
       - help text was not really at all helpful.
       - index file for Documentation was not updated
       - add the new arg to Documentation/kernel-parameters.txt
       - clarify wording in source comments
      Signed-off-by: default avatarPaul Gortmaker <paul.gortmaker@windriver.com>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Cai Zhiyong <caizhiyong@huawei.com>
      Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
  4. 11 Sep, 2013 1 commit
    • Cai Zhiyong's avatar
      block: support embedded device command line partition · bab55417
      Cai Zhiyong authored
      Read block device partition table from command line.  The partition used
      for fixed block device (eMMC) embedded device.  It is no MBR, save
      storage space.  Bootloader can be easily accessed by absolute address of
      data on the block device.  Users can easily change the partition.
      This code reference MTD partition, source "drivers/mtd/cmdlinepart.c"
      About the partition verbose reference
      [akpm@linux-foundation.org: fix printk text]
      [yongjun_wei@trendmicro.com.cn: fix error return code in parse_parts()]
      Signed-off-by: default avatarCai Zhiyong <caizhiyong@huawei.com>
      Cc: Karel Zak <kzak@redhat.com>
      Cc: "Wanglin (Albert)" <albert.wanglin@huawei.com>
      Cc: Marius Groeger <mag@sysgo.de>
      Cc: David Woodhouse <dwmw2@infradead.org>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Brian Norris <computersforpeace@gmail.com>
      Cc: Artem Bityutskiy <dedekind@infradead.org>
      Signed-off-by: default avatarWei Yongjun <yongjun_wei@trendmicro.com.cn>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
  5. 22 Feb, 2013 1 commit
  6. 17 Dec, 2012 1 commit
  7. 23 Oct, 2012 1 commit
  8. 03 Jan, 2012 1 commit
  9. 31 Jul, 2011 1 commit
    • Mike Christie's avatar
      block: add bsg helper library · aa387cc8
      Mike Christie authored
      This moves the FC classes bsg code to the block layer and
      makes it a lib so that other classes like iscsi and SAS can use it.
      It is helpful because working with the request queue, bios,
      creating scatterlists, etc are a pain that the LLD does not
      have to worry about with normal IOs and should not have to
      worry about for bsg requests.
      Signed-off-by: default avatarMike Christie <michaelc@cs.wisc.edu>
      Signed-off-by: default avatarJens Axboe <jaxboe@fusionio.com>
  10. 20 Jan, 2011 1 commit
    • David Rientjes's avatar
      kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT · 6a108a14
      David Rientjes authored
      The meaning of CONFIG_EMBEDDED has long since been obsoleted; the option
      is used to configure any non-standard kernel with a much larger scope than
      only small devices.
      This patch renames the option to CONFIG_EXPERT in init/Kconfig and fixes
      references to the option throughout the kernel.  A new CONFIG_EMBEDDED
      option is added that automatically selects CONFIG_EXPERT when enabled and
      can be used in the future to isolate options that should only be
      considered for embedded systems (RISC architectures, SLOB, etc).
      Calling the option "EXPERT" more accurately represents its intention: only
      expert users who understand the impact of the configuration changes they
      are making should enable it.
      Reviewed-by: default avatarIngo Molnar <mingo@elte.hu>
      Acked-by: default avatarDavid Woodhouse <david.woodhouse@intel.com>
      Signed-off-by: default avatarDavid Rientjes <rientjes@google.com>
      Cc: Greg KH <gregkh@suse.de>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Robin Holt <holt@sgi.com>
      Cc: <linux-arch@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
  11. 16 Sep, 2010 1 commit
  12. 26 Apr, 2010 1 commit
    • Vivek Goyal's avatar
      blk-cgroup: config options re-arrangement · afc24d49
      Vivek Goyal authored
      This patch fixes few usability and configurability issues.
      o All the cgroup based controller options are configurable from
        "Genral Setup/Control Group Support/" menu. blkio is the only exception.
        Hence make this option visible in above menu and make it configurable from
        there to bring it inline with rest of the cgroup based controllers.
      o Get rid of CONFIG_DEBUG_CFQ_IOSCHED.
        This option currently does two things.
        - Enable printing of cgroup paths in blktrace
        - Enables CONFIG_DEBUG_BLK_CGROUP, which in turn displays additional stat
          files in cgroup.
        If we are using group scheduling, blktrace data is of not really much use
        if cgroup information is not present. To get this data, currently one has to
        also enable CONFIG_DEBUG_CFQ_IOSCHED, which in turn brings the overhead of
        all the additional debug stat files which is not desired.
        Hence, this patch moves printing of cgroup paths under
        This allows us to get rid of CONFIG_DEBUG_CFQ_IOSCHED completely. Now all
        the debug stat files are controlled only by CONFIG_DEBUG_BLK_CGROUP which
        can be enabled through config menu.
      Signed-off-by: default avatarVivek Goyal <vgoyal@redhat.com>
      Acked-by: default avatarDivyesh Shah <dpshah@google.com>
      Reviewed-by: default avatarGui Jianfeng <guijianfeng@cn.fujitsu.com>
      Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
  13. 16 Mar, 2010 1 commit
  14. 12 Mar, 2010 1 commit
    • Ben Blum's avatar
      cgroups: blkio subsystem as module · 67523c48
      Ben Blum authored
      Modify the Block I/O cgroup subsystem to be able to be built as a module.
      As the CFQ disk scheduler optionally depends on blk-cgroup, config options
      in block/Kconfig, block/Kconfig.iosched, and block/blk-cgroup.h are
      enhanced to support the new module dependency.
      Signed-off-by: default avatarBen Blum <bblum@andrew.cmu.edu>
      Cc: Li Zefan <lizf@cn.fujitsu.com>
      Cc: Paul Menage <menage@google.com>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
      Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
      Cc: Vivek Goyal <vgoyal@redhat.com>
      Cc: Jens Axboe <jens.axboe@oracle.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
  15. 03 Dec, 2009 2 commits
  16. 04 Aug, 2009 1 commit
  17. 19 Jun, 2009 1 commit
  18. 27 Apr, 2009 1 commit
    • Bartlomiej Zolnierkiewicz's avatar
      block: enable by default support for large devices and files on 32-bit archs · db29a6b4
      Bartlomiej Zolnierkiewicz authored
      Enable by default support for large devices and files (CONFIG_LBD):
      - With 1TB disks being a commodity hardware it is quite easy to hit 2TB
        limitation while building RAIDs etc. and many distros have been using
        CONFIG_LBD=y by default already (at least Fedora 10 and openSUSE 11.1).
      - This should also prevent a subtle ext4 filesystem compatibility issue:
        mke2fs.ext4 defaults to creating filesystems with huge_files feature
        enabled and such filesystems cannot be later mounted read-write on
        machines with CONFIG_LBD=n (it should be quite easy to hit this issue
        when trying to use filesystem created using distro kernel on system
        running the self-build kernel, think about USB disk enclosures & co.).
      While at it:
      - Clarify config option help text w.r.t. mounting ext4 filesystems
        (they can be mounted with CONFIG_LBD=n but in the read-only mode).
      Cc: "Theodore Ts'o" <tytso@mit.edu>
      Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
      Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
  19. 09 Feb, 2009 1 commit
  20. 27 Jan, 2009 1 commit
  21. 06 Jan, 2009 1 commit
  22. 29 Dec, 2008 1 commit
    • Jens Axboe's avatar
      Get rid of CONFIG_LSF · b3a6ffe1
      Jens Axboe authored
      We have two seperate config entries for large devices/files. One
      is CONFIG_LBD that guards just the devices, the other is CONFIG_LSF
      that handles large files. This doesn't make a lot of sense, you typically
      want both or none. So get rid of CONFIG_LSF and change CONFIG_LBD wording
      to indicate that it covers both.
      Acked-by: default avatarJean Delvare <khali@linux-fr.org>
      Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
  23. 26 Nov, 2008 1 commit
  24. 03 Jul, 2008 1 commit
  25. 21 Apr, 2008 1 commit
    • Nick Andrew's avatar
      Kconfig: clean up block/Kconfig help descriptions · ee86418d
      Nick Andrew authored
      Modify the help descriptions of block/Kconfig for clarity, accuracy and
      Refactor the BLOCK description a bit.  The wording "This permits ...  to be
      removed" isn't quite right; the block layer is removed when the option is
      disabled, whereas most descriptions talk about what happens when the option is
      enabled.  Reformat the list of what is affected by disabling the block layer.
      Add more examples of large block devices to LBD and strive for technical
      accuracy; block devices of size _exactly_ 2TB require CONFIG_LBD, not only
      "bigger than 2TB".  Also try to say (perhaps not very clearly) that the config
      option is only needed when you want to have individual block devices of size
      >= 2TB, for example if you had 3 x 1TB disks in your computer you'd have a
      total storage size of 3TB but you wouldn't need the option unless you want to
      aggregate those disks into a RAID or LVM.
      Improve terminology and grammar on BLK_DEV_IO_TRACE.
      I also added the boilerplate "If unsure, say N" to most options.
      Precisely say "2TB and larger" for LSF.
      Indent the help text for BLK_DEV_BSG by 2 spaces in accordance with the
      Signed-off-by: default avatarNick Andrew <nick@nick-andrew.net>
      Cc: "Randy.Dunlap" <rdunlap@xenotime.net>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
  26. 15 Apr, 2008 1 commit
  27. 12 Oct, 2007 2 commits
  28. 28 Jul, 2007 1 commit
  29. 27 Jul, 2007 1 commit
    • Paul Mundt's avatar
      bsg: Fix build for CONFIG_BLOCK=n · 4d5d8e9d
      Paul Mundt authored
      BLK_DEV_BSG was added outside of the if BLOCK check, which allows it to
      be enabled when CONFIG_BLOCK=n. This leads to many screenlengths of
      errors, starting with a parse error on the request_queue_t definition.
      Obviously this wasn't intended for CONFIG_BLOCK=n usage, so just move the
      option back in to the block.
      Caught with a randconfig on sh.
      Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
       block/Kconfig |    4 ++--
       1 file changed, 2 insertions(+), 2 deletions(-)
      Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
  30. 19 Jul, 2007 1 commit
  31. 17 Jul, 2007 1 commit
  32. 16 Jul, 2007 3 commits
  33. 10 Jul, 2007 1 commit
  34. 04 Dec, 2006 1 commit
    • Matthew Wilcox's avatar
      [PATCH] Centralise definitions of sector_t and blkcnt_t · e6243863
      Matthew Wilcox authored
      CONFIG_LBD and CONFIG_LSF are spread into asm/types.h for no particularly
      good reason.
      Centralising the definition in linux/types.h means that arch maintainers
      don't need to bother adding it, as well as fixing the problem with
      x86-64 users being asked to make a decision that has absolutely no
      The H8/300 porters seem particularly confused since I'm not aware of any
      microcontrollers that need to support 2TB filesystems.
      Signed-off-by: default avatarMatthew Wilcox <matthew@wil.cx>
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
  35. 30 Sep, 2006 2 commits
    • 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>
    • 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
       (*) 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
           (*) 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>