** Description changed:

  When BFQ is used, disk IO will hang some seconds after boot. This was
  also reported in some public MLs [1][2]. The fix is already in mainline,
  but it's not available in 4.15.
  
  [1] https://lkml.org/lkml/2017/12/1/80
  [2] https://groups.google.com/forum/#!topic/bfq-iosched/nB2cVfDMSOU
+ 
+ 
+ == SRU Justification ==
+ 
+ Three patches are cherry-picked for SRU. "block, bfq: add requeue-
+ request hook" is the fix, while the other two are cleanups and make the
+ whole fixes clean cherry-picks.

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https://bugs.launchpad.net/bugs/1780066

Title:
  [Bionic] Disk IO hangs when using BFQ as io scheduler

Status in linux package in Ubuntu:
  In Progress

Bug description:
  When BFQ is used, disk IO will hang some seconds after boot. This was
  also reported in some public MLs [1][2]. The fix is already in
  mainline, but it's not available in 4.15.

  [1] https://lkml.org/lkml/2017/12/1/80
  [2] https://groups.google.com/forum/#!topic/bfq-iosched/nB2cVfDMSOU

  
  == SRU Justification ==

  Three patches are cherry-picked for SRU. "block, bfq: add requeue-
  request hook" is the fix, while the other two are cleanups and make
  the whole fixes clean cherry-picks.

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