1. 21 6月, 2012 1 次提交
    • T
      ALSA: hda - Fix ALC272X codec detection · 8e5a0509
      Takashi Iwai 提交于
      The codec ALC272X is a special codec for some Dell machines, and its
      detection got broken in the recent kernel because SSID check (required
      by ALC272X check) was moved to the later point.  Now we need to move
      this codec check to the right place, too.
      Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      8e5a0509
  2. 20 6月, 2012 2 次提交
  3. 18 6月, 2012 5 次提交
  4. 13 6月, 2012 1 次提交
  5. 12 6月, 2012 4 次提交
  6. 11 6月, 2012 8 次提交
  7. 09 6月, 2012 1 次提交
  8. 08 6月, 2012 9 次提交
  9. 05 6月, 2012 2 次提交
  10. 04 6月, 2012 2 次提交
  11. 03 6月, 2012 5 次提交
    • L
      Linux 3.5-rc1 · f8f5701b
      Linus Torvalds 提交于
      f8f5701b
    • L
      Merge tag 'dm-3.5-changes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm · 912afc36
      Linus Torvalds 提交于
      Pull device-mapper updates from Alasdair G Kergon:
       "Improve multipath's retrying mechanism in some defined circumstances
        and provide a simple reserve/release mechanism for userspace tools to
        access thin provisioning metadata while the pool is in use."
      
      * tag 'dm-3.5-changes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm:
        dm thin: provide userspace access to pool metadata
        dm thin: use slab mempools
        dm mpath: allow ioctls to trigger pg init
        dm mpath: delay retry of bypassed pg
        dm mpath: reduce size of struct multipath
      912afc36
    • J
      dm thin: provide userspace access to pool metadata · cc8394d8
      Joe Thornber 提交于
      This patch implements two new messages that can be sent to the thin
      pool target allowing it to take a snapshot of the _metadata_.  This,
      read-only snapshot can be accessed by userland, concurrently with the
      live target.
      
      Only one metadata snapshot can be held at a time.  The pool's status
      line will give the block location for the current msnap.
      
      Since version 0.1.5 of the userland thin provisioning tools, the
      thin_dump program displays the msnap as follows:
      
          thin_dump -m <msnap root> <metadata dev>
      
      Available here: https://github.com/jthornber/thin-provisioning-tools
      
      Now that userland can access the metadata we can do various things
      that have traditionally been kernel side tasks:
      
           i) Incremental backups.
      
           By using metadata snapshots we can work out what blocks have
           changed over time.  Combined with data snapshots we can ensure
           the data doesn't change while we back it up.
      
           A short proof of concept script can be found here:
      
           https://github.com/jthornber/thinp-test-suite/blob/master/incremental_backup_example.rb
      
           ii) Migration of thin devices from one pool to another.
      
           iii) Merging snapshots back into an external origin.
      
           iv) Asyncronous replication.
      Signed-off-by: NJoe Thornber <ejt@redhat.com>
      Signed-off-by: NAlasdair G Kergon <agk@redhat.com>
      cc8394d8
    • M
      dm thin: use slab mempools · a24c2569
      Mike Snitzer 提交于
      Use dedicated caches prefixed with a "dm_" name rather than relying on
      kmalloc mempools backed by generic slab caches so the memory usage of
      thin provisioning (and any leaks) can be accounted for independently.
      Signed-off-by: NMike Snitzer <snitzer@redhat.com>
      Signed-off-by: NAlasdair G Kergon <agk@redhat.com>
      a24c2569
    • M
      dm mpath: allow ioctls to trigger pg init · 35991652
      Mikulas Patocka 提交于
      After the failure of a group of paths, any alternative paths that
      need initialising do not become available until further I/O is sent to
      the device.  Until this has happened, ioctls return -EAGAIN.
      
      With this patch, new paths are made available in response to an ioctl
      too.  The processing of the ioctl gets delayed until this has happened.
      
      Instead of returning an error, we submit a work item to kmultipathd
      (that will potentially activate the new path) and retry in ten
      milliseconds.
      
      Note that the patch doesn't retry an ioctl if the ioctl itself fails due
      to a path failure.  Such retries should be handled intelligently by the
      code that generated the ioctl in the first place, noting that some SCSI
      commands should not be retried because they are not idempotent (XOR write
      commands).  For commands that could be retried, there is a danger that
      if the device rejected the SCSI command, the path could be errorneously
      marked as failed, and the request would be retried on another path which
      might fail too.  It can be determined if the failure happens on the
      device or on the SCSI controller, but there is no guarantee that all
      SCSI drivers set these flags correctly.
      Signed-off-by: NMikulas Patocka <mpatocka@redhat.com>
      Signed-off-by: NAlasdair G Kergon <agk@redhat.com>
      35991652