[0/2] ubi: Two small bugfixs for wear-leveling

Message ID	20240819032622.2241165-1-chengzhihao1@huawei.com
Headers	show Return-Path: <linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org> From: Zhihao Cheng <chengzhihao1@huawei.com> To: <richard@nod.at>, <miquel.raynal@bootlin.com>, <daniel@makrotopia.org> CC: <linux-mtd@lists.infradead.org> Subject: [PATCH 0/2] ubi: Two small bugfixs for wear-leveling Date: Mon, 19 Aug 2024 11:26:20 +0800 Message-ID: <20240819032622.2241165-1-chengzhihao1@huawei.com> MIME-Version: 1.0 preview: The mtd-utils/ubi-tests and ubifs-xfstests are passed. The life time of the flash is slightly improved: Config: x86_64 qemu flash: nandsim(1024 PEBs, pool=50, wl_pool=25, without pool reservation) CON [...] Content analysis details: (-4.2 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [45.249.212.255 listed in list.dnswl.org] 0.0 RCVD_IN_VALIDITY_SAFE_BLOCKED RBL: ADMINISTRATOR NOTICE: The query to Validity was blocked. See https://knowledge.validity.com/hc/en-us/articles/20961730681243 for more information. [45.249.212.255 listed in sa-accredit.habeas.com] 0.0 RCVD_IN_VALIDITY_CERTIFIED_BLOCKED RBL: ADMINISTRATOR NOTICE: The query to Validity was blocked. See https://knowledge.validity.com/hc/en-us/articles/20961730681243 for more information. [45.249.212.255 listed in sa-trusted.bondedsender.org] -0.0 RCVD_IN_MSPIKE_H4 RBL: Very Good reputation (+4) [45.249.212.255 listed in wl.mailspike.net] 0.0 RCVD_IN_VALIDITY_RPBL_BLOCKED RBL: ADMINISTRATOR NOTICE: The query to Validity was blocked. See https://knowledge.validity.com/hc/en-us/articles/20961730681243 for more information. [45.249.212.255 listed in bl.score.senderscore.com] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.0 RCVD_IN_MSPIKE_WL Mailspike good senders -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] -0.0 T_SCC_BODY_TEXT_LINE No description available. Precedence: list Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" <linux-mtd-bounces@lists.infradead.org> Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org
Series	ubi: Two small bugfixs for wear-leveling \| expand [0/2] ubi: Two small bugfixs for wear-leveling [1/2] ubi: wl: Put source PEB into correct list if trying locking LEB failed [2/2] ubi: fastmap: wl: Schedule fm_work if wear-leveling pool is empty

Message ID

20240819032622.2241165-1-chengzhihao1@huawei.com

Headers

From: Zhihao Cheng <chengzhihao1@huawei.com>
To: <richard@nod.at>, <miquel.raynal@bootlin.com>, <daniel@makrotopia.org>
CC: <linux-mtd@lists.infradead.org>
Subject: [PATCH 0/2] ubi: Two small bugfixs for wear-leveling
Date: Mon, 19 Aug 2024 11:26:20 +0800
Message-ID: <20240819032622.2241165-1-chengzhihao1@huawei.com>
MIME-Version: 1.0
Precedence: list
Content-Type: text/plain; charset="us-ascii"
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Series

ubi: Two small bugfixs for wear-leveling | expand

Message

Zhihao Cheng Aug. 19, 2024, 3:26 a.m. UTC

The mtd-utils/ubi-tests and ubifs-xfstests are passed.
The life time of the flash is slightly improved:
Config:
x86_64 qemu
flash: nandsim(1024 PEBs, pool=50, wl_pool=25, without pool reservation)
CONFIG_MTD_UBI_BEB_LIMIT=20
CONFIG_MTD_UBI_WL_THRESHOLD=50
CONFIG_MTD_UBI_FASTMAP=y
running fsstress for 1h:

Before applying patches (PEB erase counters Histogram):
=========================================================
from              to     count      min      avg      max
---------------------------------------------------------
0        ..        9:        0        0        0        0
10       ..       99:        0        0        0        0
100      ..      999:     1024      646      684      988
1000     ..     9999:        0        0        0        0
10000    ..    99999:        0        0        0        0
100000   ..      inf:        0        0        0        0
---------------------------------------------------------
Total               :     1024      646      684      988

After applying patches (PEB erase counters Histogram):
=========================================================
from              to     count      min      avg      max
---------------------------------------------------------
0        ..        9:        0        0        0        0
10       ..       99:        0        0        0        0
100      ..      999:     1024      629      666      960
1000     ..     9999:        0        0        0        0
10000    ..    99999:        0        0        0        0
100000   ..      inf:        0        0        0        0
---------------------------------------------------------
Total               :     1024      629      666      960 (0~64)

Zhihao Cheng (2):
  ubi: wl: Put source PEB into correct list if trying locking LEB failed
  ubi: fastmap: wl: Schedule fm_work if wear-leveling pool is empty

 drivers/mtd/ubi/fastmap-wl.c | 19 ++++++++++++++++---
 drivers/mtd/ubi/wl.c         | 11 +++++++++--
 drivers/mtd/ubi/wl.h         |  3 ++-
 3 files changed, 27 insertions(+), 6 deletions(-)