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  1. 01 11月, 2005 6 次提交
    • J
      [BLOCK] Unify the seperate read/write io stat fields into arrays · a362357b
      由 Jens Axboe 提交于 
      Instead of having ->read_sectors and ->write_sectors, combine the two
into ->sectors[2] and similar for the other fields. This saves a branch
several places in the io path, since we don't have to care for what the
actual io direction is. On my x86-64 box, that's 200 bytes less text in
just the core (not counting the various drivers).
Signed-off-by: NJens Axboe <axboe@suse.de>
      a362357b
    • J
      [BLOCK] Update read/write block io statistics at completion time · d72d904a
      由 Jens Axboe 提交于 
      Right now we do it at queueing time, which works alright for reads
(since they are usually sync), but not for async writes since we can
queue io a lot faster than we can complete it. This makes the vmstat
output look extremely bursty.
Signed-off-by: NJens Axboe <axboe@suse.de>
      d72d904a
    • J
      [PATCH] Creative Audigy 2 cardbus: Add IO window wakeup magic · d83c671f
      由 James Courtier-Dutton 提交于 
      This adds the magic IO wakeup code for the CardBus version of the
Creative Labs Audigy 2 to the snd-emu10k1 driver.

Without the magic IO enable sequence, reading from the IO region of the
card will fail spectacularly, and the machine will hang.

My next task will be getting the driver to actually play sound without
distortion.
Signed-off-by: NJames Courtier-Dutton <James@superbug.co.uk>

[ This is a work-in-progress, but since it avoids a total lockup
  if the emu10k module is loaded on a machine with the cardbus
  card inserted, we're better off with it than without it, even
  if sound quality is bad right now ]
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      d83c671f
    • A
      [PATCH] fix __writeback_single_inode WARN_ON · 659603ef
      由 Andrea Arcangeli 提交于 
      When the inode count is zero in inode writeback, the

	WARN_ON(!(inode->i_state & I_WILL_FREE));

is broken, and needs to test for either I_WILL_FREE|I_FREEING.

When the inode is in I_FREEING state, it's already out of the visibility
of the vm so it can't be freed so it doesn't require the __iget and the
generic_delete_inode path can call the sync internally to the lowlevel
fs callback during the last iput. So the inode being in I_FREEING is
also a valid condition for calling the sync with i_count == 0.

The specific stack trace is this:

  0xc00000007b8fb6e0  0xc00000000010118c  .__writeback_single_inode +0x5c
  0xc00000007b8fb6e0  0xc0000000001014dc (lr) .sync_inode +0x3c
  0xc00000007b8fb790  0xc0000000001014dc  .sync_inode +0x3c
  0xc00000007b8fb820  0xc0000000001a5020  .ext2_sync_inode +0x64
  0xc00000007b8fb8f0  0xc0000000001a65b4  .ext2_truncate +0x3f8
  0xc00000007b8fba40  0xc0000000001a6940  .ext2_delete_inode +0xdc
  0xc00000007b8fbac0  0xc0000000000f7a5c  .generic_delete_inode +0x124
  0xc00000007b8fbb50  0xc0000000000f5fe0  .iput +0xb8
  0xc00000007b8fbbe0  0xc0000000000e9fd4  .sys_unlink +0x2a8
  0xc00000007b8fbd10  0xc00000000001048c  .ret_from_syscall_1 +0x0
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      659603ef
    • A
      [PATCH] revert ide-scsi highmem cleanup · a717f773
      由 Andrew Morton 提交于 
      Jeff Garzik <jgarzik@pobox.com> points out that this was wrong: we need to
disable local interrupts while holding KM_IRQ0 due to IRQ sharing.

And holding interrupts off during a big PIO opration is expensive, so we only
want to do that if we know the page was highmem.

So revert commit 17fd47abSigned-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      a717f773
    • A
      [PATCH] i386: CONFIG_PC removal · f2c84c0e
      由 Arthur Othieno 提交于 
      CONFIG_PC is left-over cruft after the introduction of CONFIG_X86_PC with
the subarch split.  Remove it, and fixup the remaining users to depend on
CONFIG_X86_PC instead.
Signed-off-by: NArthur Othieno <a.othieno@bluewin.ch>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      f2c84c0e
  3. 31 10月, 2005 34 次提交