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Subject: Re: [RFC PATCH 5/5] scsi: ufs: Prepare HPB read for cached sub-region
To:     Avri Altman <Avri.Altman@wdc.com>,
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Cc:     "linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
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From:   Bart Van Assche <bvanassche@acm.org>
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Date:   Mon, 8 Jun 2020 18:23:13 -0700
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On 2020-06-06 11:38, Avri Altman wrote:
>> +       for (i = 0; i < bit_len; i++) {
>> +               if (test_bit(srgn_offset + i, srgn->mctx->ppn_dirty))
>
> Maybe use a mask or hweight instead of testing bit by bit?

How about using find_next_bit() from include/linux/bitmap.h?

/*
 *  find_next_bit(addr, nbits, bit) Position next set bit in *addr
 *                                  >= bit
 */

Thanks,

Bart.