diff mbox series

[06/12] badblocks: fix the using of MAX_BADBLOCKS

Message ID 20250221081109.734170-7-zhengqixing@huaweicloud.com (mailing list archive)
State New
Headers show
Series badblocks: bugfix and cleanup for badblocks | expand

Commit Message

Zheng Qixing Feb. 21, 2025, 8:11 a.m. UTC
From: Li Nan <linan122@huawei.com>

The number of badblocks cannot exceed MAX_BADBLOCKS, but it should be
allowed to equal MAX_BADBLOCKS.

Fixes: aa511ff8218b ("badblocks: switch to the improved badblock handling code")
Signed-off-by: Li Nan <linan122@huawei.com>
---
 block/badblocks.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Zhu Yanjun Feb. 21, 2025, 10:09 a.m. UTC | #1
On 21.02.25 09:11, Zheng Qixing wrote:
> From: Li Nan <linan122@huawei.com>
>
> The number of badblocks cannot exceed MAX_BADBLOCKS, but it should be
> allowed to equal MAX_BADBLOCKS.
>
> Fixes: aa511ff8218b ("badblocks: switch to the improved badblock handling code")
> Signed-off-by: Li Nan <linan122@huawei.com>
> ---
>   block/badblocks.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/block/badblocks.c b/block/badblocks.c
> index a953d2e9417f..87267bae6836 100644
> --- a/block/badblocks.c
> +++ b/block/badblocks.c
> @@ -700,7 +700,7 @@ static bool can_front_overwrite(struct badblocks *bb, int prev,
>   			*extra = 2;
>   	}
>   
> -	if ((bb->count + (*extra)) >= MAX_BADBLOCKS)
> +	if ((bb->count + (*extra)) > MAX_BADBLOCKS)
>   		return false;


In this commit,

commit c3c6a86e9efc5da5964260c322fe07feca6df782
Author: Coly Li <colyli@suse.de>
Date:   Sat Aug 12 01:05:08 2023 +0800

     badblocks: add helper routines for badblock ranges handling

     This patch adds several helper routines to improve badblock ranges
     handling. These helper routines will be used later in the improved
     version of badblocks_set()/badblocks_clear()/badblocks_check().

     - Helpers prev_by_hint() and prev_badblocks() are used to find the bad
       range from bad table which the searching range starts at or after.

The above is changed to MAX_BADBLOCKS. Thus, perhaps, the Fixes tag 
should include the above commit?

Except that, I am fine with this commit.

Reviewed-by: Zhu Yanjun <yanjun.zhu@linux.dev>

Zhu Yanjun


>   
>   	return true;
> @@ -1135,7 +1135,7 @@ static int _badblocks_clear(struct badblocks *bb, sector_t s, int sectors)
>   		if ((BB_OFFSET(p[prev]) < bad.start) &&
>   		    (BB_END(p[prev]) > (bad.start + bad.len))) {
>   			/* Splitting */
> -			if ((bb->count + 1) < MAX_BADBLOCKS) {
> +			if ((bb->count + 1) <= MAX_BADBLOCKS) {
>   				len = front_splitting_clear(bb, prev, &bad);
>   				bb->count += 1;
>   				cleared++;
Coly Li Feb. 21, 2025, 10:22 a.m. UTC | #2
On Fri, Feb 21, 2025 at 04:11:03PM +0800, Zheng Qixing wrote:
> From: Li Nan <linan122@huawei.com>
> 
> The number of badblocks cannot exceed MAX_BADBLOCKS, but it should be
> allowed to equal MAX_BADBLOCKS.
> 
> Fixes: aa511ff8218b ("badblocks: switch to the improved badblock handling code")
> Signed-off-by: Li Nan <linan122@huawei.com>

Looks good to me.

Acked-by: Coly Li <colyli@kernel.org>

Thanks.

> ---
>  block/badblocks.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/block/badblocks.c b/block/badblocks.c
> index a953d2e9417f..87267bae6836 100644
> --- a/block/badblocks.c
> +++ b/block/badblocks.c
> @@ -700,7 +700,7 @@ static bool can_front_overwrite(struct badblocks *bb, int prev,
>  			*extra = 2;
>  	}
>  
> -	if ((bb->count + (*extra)) >= MAX_BADBLOCKS)
> +	if ((bb->count + (*extra)) > MAX_BADBLOCKS)
>  		return false;
>  
>  	return true;
> @@ -1135,7 +1135,7 @@ static int _badblocks_clear(struct badblocks *bb, sector_t s, int sectors)
>  		if ((BB_OFFSET(p[prev]) < bad.start) &&
>  		    (BB_END(p[prev]) > (bad.start + bad.len))) {
>  			/* Splitting */
> -			if ((bb->count + 1) < MAX_BADBLOCKS) {
> +			if ((bb->count + 1) <= MAX_BADBLOCKS) {
>  				len = front_splitting_clear(bb, prev, &bad);
>  				bb->count += 1;
>  				cleared++;
> -- 
> 2.39.2
>
Yu Kuai Feb. 22, 2025, 1:15 a.m. UTC | #3
在 2025/02/21 16:11, Zheng Qixing 写道:
> From: Li Nan <linan122@huawei.com>
> 
> The number of badblocks cannot exceed MAX_BADBLOCKS, but it should be
> allowed to equal MAX_BADBLOCKS.
> 
> Fixes: aa511ff8218b ("badblocks: switch to the improved badblock handling code")
> Signed-off-by: Li Nan <linan122@huawei.com>
> ---
>   block/badblocks.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
LGTM
Reviewed-by: Yu Kuai <yukuai3@huawei.com>

> diff --git a/block/badblocks.c b/block/badblocks.c
> index a953d2e9417f..87267bae6836 100644
> --- a/block/badblocks.c
> +++ b/block/badblocks.c
> @@ -700,7 +700,7 @@ static bool can_front_overwrite(struct badblocks *bb, int prev,
>   			*extra = 2;
>   	}
>   
> -	if ((bb->count + (*extra)) >= MAX_BADBLOCKS)
> +	if ((bb->count + (*extra)) > MAX_BADBLOCKS)
>   		return false;
>   
>   	return true;
> @@ -1135,7 +1135,7 @@ static int _badblocks_clear(struct badblocks *bb, sector_t s, int sectors)
>   		if ((BB_OFFSET(p[prev]) < bad.start) &&
>   		    (BB_END(p[prev]) > (bad.start + bad.len))) {
>   			/* Splitting */
> -			if ((bb->count + 1) < MAX_BADBLOCKS) {
> +			if ((bb->count + 1) <= MAX_BADBLOCKS) {
>   				len = front_splitting_clear(bb, prev, &bad);
>   				bb->count += 1;
>   				cleared++;
>
diff mbox series

Patch

diff --git a/block/badblocks.c b/block/badblocks.c
index a953d2e9417f..87267bae6836 100644
--- a/block/badblocks.c
+++ b/block/badblocks.c
@@ -700,7 +700,7 @@  static bool can_front_overwrite(struct badblocks *bb, int prev,
 			*extra = 2;
 	}
 
-	if ((bb->count + (*extra)) >= MAX_BADBLOCKS)
+	if ((bb->count + (*extra)) > MAX_BADBLOCKS)
 		return false;
 
 	return true;
@@ -1135,7 +1135,7 @@  static int _badblocks_clear(struct badblocks *bb, sector_t s, int sectors)
 		if ((BB_OFFSET(p[prev]) < bad.start) &&
 		    (BB_END(p[prev]) > (bad.start + bad.len))) {
 			/* Splitting */
-			if ((bb->count + 1) < MAX_BADBLOCKS) {
+			if ((bb->count + 1) <= MAX_BADBLOCKS) {
 				len = front_splitting_clear(bb, prev, &bad);
 				bb->count += 1;
 				cleared++;