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  1. 22 1月, 2009 25 次提交
  3. 17 1月, 2009 2 次提交
    • C
      Btrfs: fix ioctl arg size (userland incompatible change!) · c071fcfd
      由 Chris Mason 提交于 
      The structure used to send device in btrfs ioctl calls was not
properly aligned, and so 32 bit ioctls would not work properly on
64 bit kernels.

We could fix this with compat ioctls, but we're just one byte away
and it doesn't make sense at this stage to carry about the compat ioctls
forever at this stage in the project.

This patch brings the ioctl arg up to an evenly aligned 4k.
Signed-off-by: NChris Mason <chris.mason@oracle.com>
      c071fcfd
    • C
      Btrfs: Clear the device->running_pending flag before bailing on congestion · 1d9e2ae9
      由 Chris Mason 提交于 
      Btrfs maintains a queue of async bio submissions so the checksumming
threads don't have to wait on get_request_wait.  In order to avoid
extra wakeups, this code has a running_pending flag that is used
to tell new submissions they don't need to wake the thread.

When the threads notice congestion on a single device, they
may decide to requeue the job and move on to other devices.  This
makes sure the running_pending flag is cleared before the
job is requeued.

It should help avoid IO stalls by making sure the task is woken up
when new submissions come in.
Signed-off-by: NChris Mason <chris.mason@oracle.com>
      1d9e2ae9
  5. 16 1月, 2009 2 次提交
  7. 14 1月, 2009 11 次提交