1. 28 Oct, 2002 13 commits
    • Jens Axboe's avatar
      [PATCH] queue merge_bvec_fn() changes · 14ff27c5
      Jens Axboe authored
      Make merge_bvec_fn() return number of bytes we can accept at a given
      offset, instead of a bool.
      14ff27c5
    • Jens Axboe's avatar
      [PATCH] various ide fixes and cleanups · e00cb941
      Jens Axboe authored
      o Remove some ide compile warnings, old suspend stuff is not used at
        all, for instance.
      
      o If elv_next_request() returns NULL, remember to clear hwgroup->busy
        if we don't have pending commands. This is important. If a queue
        prep function kills a request, we would before quit with hwgroup busy.
        This essentially froze the hwgroup.
      
      o Don't do own list manipulation in ide_do_drive_cmd(). Use the new and
        great elv_add_request() functions
      
      o Fix race on inspection of request after io completion by bumping the
        request reference count prior to ioscheduler insertion.
      
      o Make ide-floppy understand a REQ_BLOCK_PC eject. More may follow, it's
        ATAPI after all.
      
      o Clear hw before passing to ide_init_hwif_ports(). Fixes oops on
        non-pci controllers.
      e00cb941
    • Jens Axboe's avatar
      [PATCH] add end_request helpers that deal in bytes, not sectors · 278bdd1c
      Jens Axboe authored
      This adds an end_that_request_chunk() helper, that puts the core
      functionality in __end_that_request_first().  This one deals in bytes.
      end_that_request_first() does the 512 multiply, and then
      end_that_request_chunk() can just use it directly.
      
      This enables ide-cd to do proper dma in sizes that are not sector
      aligned.  Some of the most important CD functions (ripping audio dma,
      burning audio cds, burning raw cds) _require_ this or we will be in pio.
      That stinks.  We simply cannot use pio for these, not on writers much
      that are fast!
      278bdd1c
    • Jens Axboe's avatar
      [PATCH] request references and list deletion/insertion checking · 6f04a530
      Jens Axboe authored
      o Always use list_del_init() on request queuelist, this allows us to
        sanity check the integrity of the request on insertion and removal.
        So we can complain loudly instead of silently corrupting memory.
      
      o Add references to requests. This is cheap, since we dont have to use
        an atomic variable for it (all puts are inside queue lock). We've had
        a bug in IDE for years where we want to inspect request state after
        io completion, but this is not possible to do race free right now.
        REQ_BLOCK_PC and sgio will need this too, for checking io residual
        etc. This is not just a theoretical race, I've seen it happen.
      6f04a530
    • Jens Axboe's avatar
      [PATCH] queue last_merge hint cleanup · c5868eb7
      Jens Axboe authored
      Cleanup the last_merge logic. There are two reasons for clearing
      last_merge when we are dealing with integrity, and these are:
      
      o Clear when handing the request to the driver, so we don't merge on
        a started request.
      
      o Clear when a request is taken off the list. This cannot be done from
        the driver (above case would already have been hit), but it can
        happen
        when we merge two requests.
      
      This makes it a lot nicer, it was always peculiar how we cleared in
      put_request.
      c5868eb7
    • Jens Axboe's avatar
      [PATCH] queue dma alignment · ad519c69
      Jens Axboe authored
      Make it possible for a device to specify the dma alignment restrictions
      it has. This will be used by future infrastructure when mapping in user
      pages, and allows us to dma to on ATAPI even though user address and
      length is not sector size aligned.
      ad519c69
    • Jens Axboe's avatar
      [PATCH] make queue prep_rq_fn() a bit more powerful · 0717c0a9
      Jens Axboe authored
      Extend q->prep_rq_fn() to return one of three values:
      
       o BLKPREP_OK: request is good, return it
       o BLKPREP_KILL: request is bad, end it completely
       o BLKPREP_DEFER: request is good, but we can't take it now
      
      We maintain compatability with old prep functions (if any, outside of
      ide-cd). This change is needed or SCSI to use prep function for command
      init, if sg table allocation fails we can just defer the request.
      0717c0a9
    • Jens Axboe's avatar
      [PATCH] make blk_dump_rq_flags a bit more useful · 8c1f67fa
      Jens Axboe authored
      Add some missing bits, and make it generally a bit more useful outside
      of REQ_PC requests.
      8c1f67fa
    • Jens Axboe's avatar
      [PATCH] elv_add_request cleanups · 86b9d08b
      Jens Axboe authored
      Request insertion in the current tree is a mess. We have all sorts of
      variants of *elv_add_request*, and it's not at all clear who does what
      and with what locks (or not). This patch cleans it up to be:
      
      o __elv_add_request(queue, request, at_end, plug)
            Core function, requires queue lock to be held
      
      o elv_add_request(queue, request, at_end, plug)
            Like __elv_add_request(), but grabs queue lock
      
      o __elv_add_request_pos(queue, request, position)
            Insert request at a given location, lock must be held
      86b9d08b
    • Jens Axboe's avatar
      [PATCH] sr_ioctl must return -EIO, not -EINVAL · 6d94d882
      Jens Axboe authored
      We must return -EIO if the command fails (the 5/20/00 sense check is
      just helping return more sane info), not -EINVAL. Getting -EINVAL return
      on an ioctl if a command fails is less than helpful for applications...
      6d94d882
    • Jens Axboe's avatar
      [PATCH] end_io bouncing · d50059ec
      Jens Axboe authored
      o Split blk_queue_bounce() into a slow and fast path. The fast path is
        inlined, only if we actually need to check the bio for possible
        bounces (and bounce) do we enter __blk_queue_bounce() slow path.
      
      o Fix a nasty bug that could cause corruption for file systems not
        using PAGE_CACHE_SIZE blok size! We were not correctly setting the
        'to' bv_offset correctly.
      
      o Add BIO_BOUNCE flag. Later patches will use this for debug checking.
      d50059ec
    • Jens Axboe's avatar
      [PATCH] make deadline_merge prefetch next entry · 1b59d3cb
      Jens Axboe authored
      Make deadline_merge() prefetch the next entry on the list.
      1b59d3cb
    • Manfred Spraul's avatar
      [PATCH] use correct wakeups in fs/pipe.c · 88591b7f
      Manfred Spraul authored
      wake_up_interruptible() and _sync() calls are reversed in pipe_read().
      
      The attached patches only calls _sync if a schedule() call follows.
      88591b7f
  2. 18 Oct, 2002 27 commits
    • Linus Torvalds's avatar
      Linux v2.5.44 · ecf2c214
      Linus Torvalds authored
      ecf2c214
    • Patrick Mochel's avatar
      [PATCH] device removal · a49c4f6a
      Patrick Mochel authored
      The problem was that when the refcount hit 0, it was unconditionally
      assuming that it had been added, which is wrong.  The patch below
      corrects that, and fixes the Oops when loading the floppy driver.
      a49c4f6a
    • Linus Torvalds's avatar
      Merge bk://linuxusb.bkbits.net/pnp-2.5 · 441a964b
      Linus Torvalds authored
      into home.transmeta.com:/home/torvalds/v2.5/linux
      441a964b
    • Linus Torvalds's avatar
      Merge home.transmeta.com:/home/torvalds/v2.5/x86-64 · 76dd2761
      Linus Torvalds authored
      into home.transmeta.com:/home/torvalds/v2.5/linux
      76dd2761
    • Andi Kleen's avatar
      [PATCH] add linux/ioctl32.h header for 2.5.43 · 1a19232d
      Andi Kleen authored
      Several ports (x86-64,ppc64,sparc64) which do 32bit ioctl emulation
      have functions for drivers to let them define their own translation
      handlers. So far it was a bit complicated to use because there
      was no standard include file that declares the prototypes for this
      stuff. Then drivers and other subsystems can start to declare their own
      ioctl translation handlers.
      
      This patch add include/linux/ioctl32.h to fix this.
      
      The actual implementation is in arch specific code. It has been coordinated
      with DaveM and Anton.
      
      This patch is needed for the x86-64 merge I sent in separate mail.
      
      There is currently no preprocessor symbol that the drivers can test
      to see if they should use this. So far they have to check arch symbols.
      This will be fixed later when all 64bit ports that need it add the dynamic
      ioctl registration API too (that's ia64,s390x,mips64)
      1a19232d
    • Andi Kleen's avatar
      [PATCH] x86-64 updates for 2.5.43 · 3428c8d1
      Andi Kleen authored
      This fixes a few files that got lost with the last merge and merges
      with 2.5.43/i386.  Only changes architecture specific files.
      
      It depends on one other patch (for linux/ioctl32.h) which I'm sending
      separately.
      
      Changes:
      - Include missing files (pageattr.c) and Makefile changes
      - Update IA32 subsystem. Various small fixes and a big merge
        with sparc64.
      - Change HZ to 1000
      - Merge some of the 2.5.43/i386 profiling changes. No full oprofile yet.
      - Fix many warnings
      - Update defconfig
      - Various other smaller cleanups and bugfixes.
      3428c8d1
    • Alexander Viro's avatar
      [PATCH] stram switched to private queue · 1e215a63
      Alexander Viro authored
              * switched to private queues
              * set ->queue
      1e215a63
    • Linus Torvalds's avatar
      Merge master.kernel.org:/home/davem/BK/sparc-2.5 · 50fbecd2
      Linus Torvalds authored
      into home.transmeta.com:/home/torvalds/v2.5/linux
      50fbecd2
    • Alexander Viro's avatar
      [PATCH] nbd converted to private queue · 646fdb02
      Alexander Viro authored
              * switched to private queues
              * set ->queue and ->private_data
              * switched to use of ->bd_disk/->rq_disk
              * merged private blocksize, etc. arrays into nbd_dev[]
              * cleaned up
      646fdb02
    • Alexander Viro's avatar
      [PATCH] jsfd converted to use of private queue · 45552206
      Alexander Viro authored
              * switched to private queues
              * set ->queue and ->private_data
      	* switched to use of ->rq_disk
      45552206
    • Alexander Viro's avatar
      [PATCH] compile fixes · dceb2f49
      Alexander Viro authored
      	sbpcd.c: removes bogus duplicate definition of sbpcd_lock, use of
      CURRENT (we are using private queue) and call of invalidate_buffers() in
      ->media_changed() (caller does it itself).  That went in a changeset from
      davej - looks like a merge problem...
      	sr.c: braino in ifdefed printk - s/disk/cd->disk/.  Thanks to jejb
      for spotting that one...
      dceb2f49
    • Linus Torvalds's avatar
      Merge bk://linux-bt.bkbits.net/bt-2.5 · b1084bc3
      Linus Torvalds authored
      into home.transmeta.com:/home/torvalds/v2.5/linux
      b1084bc3
    • Linus Torvalds's avatar
      Merge master.kernel.org:/home/davem/BK/net-2.5 · f8735053
      Linus Torvalds authored
      into home.transmeta.com:/home/torvalds/v2.5/linux
      f8735053
    • David S. Miller's avatar
      Merge nuts.ninka.net:/home/davem/src/BK/sparcwork-2.5 · 07a6661a
      David S. Miller authored
      into nuts.ninka.net:/home/davem/src/BK/sparc-2.5
      07a6661a
    • David S. Miller's avatar
      50652320
    • Linus Torvalds's avatar
      Merge · ddd11110
      Linus Torvalds authored
      ddd11110
    • Dipankar Sarma's avatar
      [PATCH] RCU helper patchset 2/2 · a0b6c9c1
      Dipankar Sarma authored
      This adds a set of list macros that make handling of list protected
      by RCU simpler. The interfaces added are -
      
      list_add_rcu
      list_add_tail_rcu
      	- Adds an element by taking care of memory barrier (wmb()).
      
      list_del_rcu
      	- Deletes an element but doesn't re-initialize the pointers in
      	  the element for supporting RCU based traversal.
      
      list_for_each_rcu
      __list_for_each_rcu
      	- Traversal of RCU protected list - takes care of memory barriers
      	  transparently.
      a0b6c9c1
    • Dipankar Sarma's avatar
      [PATCH] RCU helper patchset 1/2 · 0ec69870
      Dipankar Sarma authored
      This first RCU helper patch adds a read_barrier_depends() primitive
      to all archs which is NOP for archs that doesn't require an rmb()
      for data dependent reads when writes are ordered using a wmb().
      In reality, only alpha requires an rmb(), the rest are NOPs.
      It is likely to be necessary in most situations that would use RCU.
      Please apply.
      
       Description :
      
      Sometime ago, during a discussion on lock-free lookups, it was
      agreed that an additional memory barrier interface,
      read_barrier_depends() that is lighter than an rmb(),
      is necessary to make sure that data-dependent reads are not
      re-ordered over this barrier. For many processors, data-dependency
      enforces order, so this interface is a NOP, but for those that don't
      (like alpha), it can be a rmb().
      
      For example, the following code would force ordering (the initial
      value of "a" is zero, "b" is one, and "p" is "&a"):
      
          CPU 0                           CPU 1
      
          b = 2;
          memory_barrier();
          p = &b;                         q = p;
                                          read_barrier_depends();
                                          d = *q;
      
      because the read of "*q" depends on the read of "p" and these
      two reads should be separated by a read_barrier_depends().  However,
      the following code, with the same initial values for "a" and "b":
      
          CPU 0                           CPU 1
      
          a = 2;
          memory_barrier();
          b = 3;                          y = b;
                                          read_barrier_depends();
                                          x = a;
      
      does not enforce ordering, since there is no data dependency between
      the read of "a" and the read of "b".  Therefore, on some CPUs, such
      as Alpha, "y" could be set to 3 and "x" to 0.  rmb()
      needs to be used here, not read_barrier_depends().
      
      The original discussion can be found at -
      http://marc.theaimsgroup.com/?t=100259422200002&r=1&w=2
      
      Explanation of the need for read_barrier_depends()
      can be found at http://lse.sf.net/locking/wmbdd.html
      0ec69870
    • David S. Miller's avatar
      0694164e
    • Frank Davis's avatar
      [PATCH] drivers/block/xd.c compile · c192e519
      Frank Davis authored
      This fixes a 'used but not declared' compile error
      c192e519
    • David S. Miller's avatar
      [PATCH] Fix scsi OOPS on bootup · b3385cf1
      David S. Miller authored
      It ends up trying to list_del() from an uninitialized
      list_head.
      b3385cf1
    • Steven Whitehouse's avatar
      [DECNET]: Update to support timeouts. · 5d1931fc
      Steven Whitehouse authored
      5d1931fc
    • Hideaki Yoshifuji's avatar
      [IPV6]: Several MLD fixes · 69dda393
      Hideaki Yoshifuji authored
      - Ignore queries for invalid addresses
      - MLD for link-local addresses
      69dda393
    • Hideaki Yoshifuji's avatar
    • David S. Miller's avatar
      Hand resolve of minor conflicts. · 764d1bce
      David S. Miller authored
      764d1bce
    • David S. Miller's avatar
      Merge nuts.ninka.net:/home/davem/src/BK/sctp-2.5 · a9d077d8
      David S. Miller authored
      into nuts.ninka.net:/home/davem/src/BK/net-2.5
      a9d077d8
    • David S. Miller's avatar
      Merge http://linux-lksctp.bkbits.net/lksctp-2.5 · b18b05fb
      David S. Miller authored
      into nuts.ninka.net:/home/davem/src/BK/sctp-2.5
      b18b05fb