[v1] block/blk-rq-qos: fix incorrect lock order for rq_qos_mutex and freeze queue

[PATCH RESEND 0/5] block/blk-rq-qos: fix incorrect lock order for rq_qos_mutex and freeze queue

Yu Kuai posted 5 patches 2 months, 3 weeks ago

Diff against v1
Download series mbox

block/blk-iocost.c    | 15 +++++++--------
block/blk-iolatency.c | 11 +++++++----
block/blk-rq-qos.c    | 23 ++++++-----------------
block/blk-rq-qos.h    |  4 ++--
block/blk-wbt.c       |  6 +++++-
5 files changed, 27 insertions(+), 32 deletions(-)

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[PATCH RESEND 0/5] block/blk-rq-qos: fix incorrect lock order for rq_qos_mutex and freeze queue

Posted by Yu Kuai 2 months, 3 weeks ago

 - Resend with kernel.org email server.

Currently rq_qos_add() will be called with rq_qos_mutex held, and freeze
queue, this is not expected. This set make sure queu is always freezed
before holding rq_qos_mutex.

Yu Kuai (5):
  block/blk-rq-qos: add a new helper rq_qos_add_freezed()
  blk-wbt: fix incorrect lock order for rq_qos_mutex and freeze queue
  blk-iocost: fix incorrect lock order for rq_qos_mutex and freeze queue
  blk-iolatency: fix incorrect lock order for rq_qos_mutex and freeze
    queue
  block/blk-rq-qos: cleanup rq_qos_add()

 block/blk-iocost.c    | 15 +++++++--------
 block/blk-iolatency.c | 11 +++++++----
 block/blk-rq-qos.c    | 23 ++++++-----------------
 block/blk-rq-qos.h    |  4 ++--
 block/blk-wbt.c       |  6 +++++-
 5 files changed, 27 insertions(+), 32 deletions(-)

-- 
2.51.0