Re: [PATCH] block: switch to atomic_t for request references
From: Peter Zijlstra <peterz@infradead.org>
Date: 2021-12-08 20:32:56
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On Wed, Dec 08, 2021 at 10:50:10AM -0800, Linus Torvalds wrote:
On Wed, Dec 8, 2021 at 10:44 AM Peter Zijlstra [off-list ref] wrote:quoted
From testing xadd had different flags from add; I've not yet looked at the SDM to see what it said on the matter.That should not be the case. Just checked, and it just says "The CF, PF, AF, SF, ZF, and OF flags are set according to the result of the addition, which is stored in the destination operand"
I got the constraints wrong :/ They match now.