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SubjectRe: [PATCH v3] blktrace: Fix potentail deadlock between delete & sysfs ops
On Fri, 2017-08-18 at 13:54 -0400, Waiman Long wrote:
> Instead, a global blktrace
> mutex will be used to serialize the read/write of the blktrace sysfs
> attributes.

Hello Waiman,

Using a mutex to serialize code is wrong. What is needed is exact
documentation of what data structures and/or member variables are
protected by bdev->bd_mutex and by blktrace_mutex.

Also, please spell "potential" correctly in the subject of this patch.


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