On Sat, Dec 16, 2017 at 6:15 AM, Theodore Ts'o wrote:
> On Fri, Dec 15, 2017 at 05:39:25PM +0900, Byungchul Park wrote:
>>
>> All locks should belong to one class if each path of acquisition
>> can be switchable each other within the class at any time.
>> Otherwise, they should belong to a differe
On Fri, Dec 15, 2017 at 05:39:25PM +0900, Byungchul Park wrote:
>
> All locks should belong to one class if each path of acquisition
> can be switchable each other within the class at any time.
> Otherwise, they should belong to a different class.
OK, so let's go back to my case of a Network Bloc
On Fri, Dec 15, 2017 at 3:24 PM, Theodore Ts'o wrote:
> seems that lock classification as a solution to cross-release false
> positives seems unlikely:
For this, let me explain more.
For example, either to use cross-release or to consider
wait_for_completion() in submit_bio_wait() manually u
On Fri, Dec 15, 2017 at 3:24 PM, Theodore Ts'o wrote:
> On Fri, Dec 15, 2017 at 01:05:43PM +0900, Byungchul Park wrote:
>> For example, in the case of fs issues, for now we can
>> invalidate wait_for_completion() in submit_bio_wait()
>
> And this will spawn a checkpatch.pl ERROR:
>
>
On Fri, Dec 15, 2017 at 01:05:43PM +0900, Byungchul Park wrote:
> For example, in the case of fs issues, for now we can
> invalidate wait_for_completion() in submit_bio_wait()
And this will spawn a checkpatch.pl ERROR:
ERROR("LOCKDEP",
"lockdep_no_valid
On Thu, Dec 14, 2017 at 2:01 PM, Byungchul Park
wrote:
> On Wed, Dec 13, 2017 at 7:46 PM, Ingo Molnar wrote:
>>
>> * Byungchul Park wrote:
>>
>>> Lockdep works, based on the following:
>>>
>>>(1) Classifying locks properly
>>>(2) Checking relationship between the classes
>>>
>>> If (1) i
On Wed, Dec 13, 2017 at 7:46 PM, Ingo Molnar wrote:
>
> * Byungchul Park wrote:
>
>> Lockdep works, based on the following:
>>
>>(1) Classifying locks properly
>>(2) Checking relationship between the classes
>>
>> If (1) is not good or (2) is not good, then we
>> might get false positives
>From e966eaeeb623f09975ef362c2866fae6f86844f9 Mon Sep 17 00:00:00 2001
From: Ingo Molnar
Date: Tue, 12 Dec 2017 12:31:16 +0100
Subject: [PATCH] locking/lockdep: Remove the cross-release locking checks
This code (CONFIG_LOCKDEP_CROSSRELEASE=y and CONFIG_LOCKDEP_COMPLETIONS=y),
while it found a number
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