[PATCH v3 0/3] fix possible memleak in '__blk_trace_remove'

[Ye Bin <yebin@xxxxxxxxxxxxxxx>]

From: Ye Bin <yebin10@xxxxxxxxxx>

Diff v3 VS v2
1. Invert the check of 'blk_trace_{start,stop}' and return early from the
function for the error case.

Diff v2 VS v1:
1. Introduce 'blk_trace_{start,stop}' helper instead of 'blk_trace_switch_state'.
2. Move stop block trace from '__blk_trace_remove' to 'blk_trace_cleanup'.

Ye Bin (3):
  blktrace: introduce 'blk_trace_{start,stop}' helper
  blktrace: fix possible memleak in '__blk_trace_remove'
  blktrace: remove unnessary stop block trace in 'blk_trace_shutdown'

 kernel/trace/blktrace.c | 82 ++++++++++++++++++++---------------------
 1 file changed, 39 insertions(+), 43 deletions(-)

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2.31.1