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From: Bart Van Assche <bvanassche@acm.org>
To: Avri Altman <Avri.Altman@wdc.com>,
	"daejun7.park@samsung.com" <daejun7.park@samsung.com>,
	ALIM AKHTAR <alim.akhtar@samsung.com>,
	"jejb@linux.ibm.com" <jejb@linux.ibm.com>,
	"martin.petersen@oracle.com" <martin.petersen@oracle.com>,
	"asutoshd@codeaurora.org" <asutoshd@codeaurora.org>,
	"beanhuo@micron.com" <beanhuo@micron.com>,
	"stanley.chu@mediatek.com" <stanley.chu@mediatek.com>,
	"cang@codeaurora.org" <cang@codeaurora.org>,
	"tomas.winkler@intel.com" <tomas.winkler@intel.com>
Cc: "linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Sang-yoon Oh <sangyoon.oh@samsung.com>,
	Sung-Jun Park <sungjun07.park@samsung.com>,
	yongmyung lee <ymhungry.lee@samsung.com>,
	Jinyoung CHOI <j-young.choi@samsung.com>,
	Adel Choi <adel.choi@samsung.com>,
	BoRam Shin <boram.shin@samsung.com>
Subject: Re: [RFC PATCH 5/5] scsi: ufs: Prepare HPB read for cached sub-region
Date: Mon, 8 Jun 2020 18:23:13 -0700	[thread overview]
Message-ID: <a20fb89f-5a89-3e15-cd06-e250c60ccbd0@acm.org> (raw)
In-Reply-To: <SN6PR04MB4640E4699B88CB43AF62B6DFFC870@SN6PR04MB4640.namprd04.prod.outlook.com>

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.

  parent reply	other threads:[~2020-06-09  1:23 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20200605011604epcms2p8bec8ef6682583d7248dc7d9dc1bfc882@epcms2p8>
2020-06-05  1:16 ` [RFC PATCH 0/5] scsi: ufs: Add Host Performance Booster Support Daejun Park
2020-06-05  1:22   ` [RFC PATCH 1/5] scsi: ufs: Add UFS feature related parameter Daejun Park
2020-06-05  1:30     ` [RFC PATCH 2/5] scsi: ufs: Add UFS-feature layer Daejun Park
2020-06-05  1:38       ` [RFC PATCH 3/5] scsi: ufs: Introduce HPB module Daejun Park
2020-06-05  1:56         ` [RFC PATCH 4/5] scsi: ufs: L2P map management for HPB read Daejun Park
2020-06-05  2:12           ` [RFC PATCH 5/5] scsi: ufs: Prepare HPB read for cached sub-region Daejun Park
2020-06-06 18:38             ` Avri Altman
2020-06-09  0:53               ` Daejun Park
2020-06-09  1:23               ` Bart Van Assche [this message]
2020-06-11  1:37             ` Bart Van Assche
2020-06-11  6:43               ` Avri Altman
2020-06-12  3:39               ` Daejun Park
2020-06-06 18:26           ` [RFC PATCH 4/5] scsi: ufs: L2P map management for HPB read Avri Altman
2020-06-09  0:52             ` Daejun Park
2020-06-09  6:39               ` Avri Altman
2020-06-10  2:49                 ` Daejun Park
2020-06-09  6:48               ` Avri Altman
2020-06-10  3:51                 ` Daejun Park
2020-06-09  1:15             ` Bart Van Assche
2020-06-11  1:16           ` Bart Van Assche
2020-06-12  3:37             ` Daejun Park
2020-06-13 15:24               ` Bart Van Assche
2020-06-06 14:58         ` [RFC PATCH 3/5] scsi: ufs: Introduce HPB module Avri Altman
2020-06-09  0:52           ` Daejun Park
2020-06-09  6:51             ` Avri Altman
2020-06-12  2:25               ` Daejun Park
2020-06-07  7:06         ` Avri Altman
2020-06-09  0:53           ` Daejun Park
2020-06-10  4:29         ` Bart Van Assche
2020-06-10  9:57           ` Bean Huo
2020-06-12  2:29           ` Daejun Park
2020-06-10  4:15       ` [RFC PATCH 2/5] scsi: ufs: Add UFS-feature layer Bart Van Assche
2020-06-12  2:27         ` Daejun Park
2020-06-12  4:28           ` Bart Van Assche
2020-06-11  1:39       ` Bart Van Assche
2020-06-06 12:11     ` [RFC PATCH 1/5] scsi: ufs: Add UFS feature related parameter Avri Altman
2020-06-09  0:51       ` Daejun Park
2020-06-06 12:02   ` [RFC PATCH 0/5] scsi: ufs: Add Host Performance Booster Support Avri Altman
2020-06-09  0:49     ` Daejun Park
2020-06-09  7:00       ` Avri Altman
2020-06-10  9:50   ` Bean Huo

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