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Subject: Re: [PATCH] sbitmap: Consider cleared bits in sbitmap_bitmap_show()
To:     John Garry <john.garry@huawei.com>
Cc:     bvanassche@acm.org, osandov@fb.com, linux-block@vger.kernel.org,
        linux-kernel@vger.kernel.org, hare@suse.com
References: <1593590785-191512-1-git-send-email-john.garry@huawei.com>
From:   Jens Axboe <axboe@kernel.dk>
Message-ID: <122e0d4d-d9b2-a81e-b8ce-fa8636eabe1b@kernel.dk>
Date:   Wed, 1 Jul 2020 10:53:28 -0600
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On 7/1/20 2:06 AM, John Garry wrote:
> sbitmap works by maintaining separate bitmaps of set and cleared bits.
> The set bits are cleared in a batch, to save the burden of continuously
> locking the "word" map to unset.
> 
> sbitmap_bitmap_show() only shows the set bits (in "word"), which is not
> too much use, so mask out the cleared bits.

Applied, thanks.

-- 
Jens Axboe