I've edited the thing to look like so. I'll go queue it for
locking/urgent.
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Subject: locking/qrwlock: Fix ordering in queued_write_lock_slowpath()
From: Ali Saidi
Date: Thu, 15 Apr 2021 17:27:11 +
From: Ali Saidi
While this code is executed with the wait_lock held, a reader can
acqu
On 4/15/21 1:27 PM, Ali Saidi wrote:
While this code is executed with the wait_lock held, a reader can
acquire the lock without holding wait_lock. The writer side loops
checking the value with the atomic_cond_read_acquire(), but only truly
acquires the lock when the compare-and-exchange is compl
While this code is executed with the wait_lock held, a reader can
acquire the lock without holding wait_lock. The writer side loops
checking the value with the atomic_cond_read_acquire(), but only truly
acquires the lock when the compare-and-exchange is completed
successfully which isn’t ordered.
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