Re: [PATCH 3/4] scsi: pm8001: Use non-atomic bitmap ops for tag alloc + free

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To: Damien Le Moal <damien.lemoal@xxxxxxxxxxxxxxxxxx>
Subject: Re: [PATCH 3/4] scsi: pm8001: Use non-atomic bitmap ops for tag alloc + free
From: Jinpu Wang <jinpu.wang@xxxxxxxxx>
Date: Mon, 20 Jun 2022 08:53:00 +0200
Cc: Hannes Reinecke <hare@xxxxxxx>, John Garry <john.garry@xxxxxxxxxx>, jinpu.wang@xxxxxxxxx, jejb@xxxxxxxxxxxxx, martin.petersen@xxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Ajish.Koshy@xxxxxxxxxxxxx
In-reply-to: <594ac0c9-a55b-bec7-77e3-a6c7e9525f6b@opensource.wdc.com>

>
> After the patch, spinlock guarantees atomicity for both alloc and free.
>
> Not sure there is any gain from this.
+1

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References:
- [PATCH 0/4] pm8001 driver improvements
  - From: John Garry
- [PATCH 3/4] scsi: pm8001: Use non-atomic bitmap ops for tag alloc + free
  - From: John Garry
- Re: [PATCH 3/4] scsi: pm8001: Use non-atomic bitmap ops for tag alloc + free
  - From: Hannes Reinecke
- Re: [PATCH 3/4] scsi: pm8001: Use non-atomic bitmap ops for tag alloc + free
  - From: Damien Le Moal

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