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Message-Id: <20230427085612.1346752-4-linan666@huaweicloud.com>
Date: Thu, 27 Apr 2023 16:56:12 +0800
From: linan666@...weicloud.com
To: song@...nel.org, neilb@...e.de, Rob.Becker@...erbed.com
Cc: linux-raid@...r.kernel.org, linux-kernel@...r.kernel.org,
linan122@...wei.com, yukuai3@...wei.com, yi.zhang@...wei.com,
houtao1@...wei.com, yangerkun@...wei.com
Subject: [PATCH 3/3] md/raid10: fix wrong setting of max_corr_read_errors
From: Li Nan <linan122@...wei.com>
max_corr_read_errors should not be negative number. Change it to
unsigned int where use it.
Fixes: 1e50915fe0bb ("raid: improve MD/raid10 handling of correctable read errors.")
Signed-off-by: Li Nan <linan122@...wei.com>
---
drivers/md/md.c | 2 +-
drivers/md/raid10.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/md/md.c b/drivers/md/md.c
index faffbd042925..a365ed122960 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -4484,7 +4484,7 @@ __ATTR_PREALLOC(array_state, S_IRUGO|S_IWUSR, array_state_show, array_state_stor
static ssize_t
max_corrected_read_errors_show(struct mddev *mddev, char *page) {
- return sprintf(page, "%d\n",
+ return sprintf(page, "%u\n",
atomic_read(&mddev->max_corr_read_errors));
}
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 4fcfcb350d2b..28cdb2ae0e91 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -2727,7 +2727,7 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10
int sect = 0; /* Offset from r10_bio->sector */
int sectors = r10_bio->sectors;
struct md_rdev *rdev;
- int max_read_errors = atomic_read(&mddev->max_corr_read_errors);
+ unsigned int max_read_errors = atomic_read(&mddev->max_corr_read_errors);
int d = r10_bio->devs[r10_bio->read_slot].devnum;
/* still own a reference to this rdev, so it cannot
@@ -2743,7 +2743,7 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10
check_decay_read_errors(mddev, rdev);
atomic_inc(&rdev->read_errors);
if (atomic_read(&rdev->read_errors) > max_read_errors) {
- pr_notice("md/raid10:%s: %pg: Raid device exceeded read_error threshold [cur %d:max %d]\n",
+ pr_notice("md/raid10:%s: %pg: Raid device exceeded read_error threshold [cur %u:max %u]\n",
mdname(mddev), rdev->bdev,
atomic_read(&rdev->read_errors), max_read_errors);
pr_notice("md/raid10:%s: %pg: Failing raid device\n",
--
2.31.1
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