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md:Fix a bug in function badblocks_show().

PATCH majianpeng 3 participants 4 messages Mar 8, 2012 – Jun 27, 2012 MD RAID

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majianpeng

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#0 lore raw

From 58d2ba381eee4b732fca99a7311b1dcf589f57c3 Mon Sep 17 00:00:00 2001
From: majianpeng <[email protected]>
Date: Thu, 8 Mar 2012 14:37:00 +0800
Subject: [PATCH] md:Fix a bug in function badblocks_show().

If unack==0, it will show all bad blocks include unacknowledged-bad-blocks.

---
 drivers/md/md.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
drivers/md/md.c +1 -1
index ce88755..3f1b6e5 100644
@@ -8091,7 +8091,7 @@ retry:
 		int ack = BB_ACK(p[i]);
 		i++;
 
-		if (unack && ack)
+		if ((unack ^ ack) == 0)
 			continue;
 
 		len += snprintf(page+len, PAGE_SIZE-len, "%llu %u\n",
Signature · 6 lines
1.7.5.4

 				
--------------
majianpeng
2012-03-08
#1 lore raw
Quoted 6 lines · On Thu, 8 Mar 2012 14:46:52 +0800 "majianpeng" <[email protected]> wrote:
Quoted 1 line

From 58d2ba381eee4b732fca99a7311b1dcf589f57c3 Mon Sep 17 00:00:00 2001

From: majianpeng <[email protected]>
Date: Thu, 8 Mar 2012 14:37:00 +0800
Subject: [PATCH] md:Fix a bug in function badblocks_show().

If unack==0, it will show all bad blocks include unacknowledged-bad-blocks.

Correct. It is meant to.
The "bad_blocks" file shows all bad blocks.
The "unacknowledged_bad_blocks" file show all unacknowledged bad blocks.

Thanks,
NeilBrown

Quoted 19 lines
---
 drivers/md/md.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
drivers/md/md.c +1 -1
index ce88755..3f1b6e5 100644
@@ -8091,7 +8091,7 @@ retry:
 		int ack = BB_ACK(p[i]);
 		i++;
 
-		if (unack && ack)
+		if ((unack ^ ack) == 0)
 			continue;
 
 		len += snprintf(page+len, PAGE_SIZE-len, "%llu %u\n",
#2 lore raw

On 2012-03-14 09:32 NeilBrown <[email protected]> Wrote:

Quoted 31 lines · On Thu, 8 Mar 2012 14:46:52 +0800 "majianpeng" <[email protected]> wrote:
Quoted 7 lines
Quoted 2 lines

From 58d2ba381eee4b732fca99a7311b1dcf589f57c3 Mon Sep 17 00:00:00 2001

From: majianpeng <[email protected]>
Date: Thu, 8 Mar 2012 14:37:00 +0800
Subject: [PATCH] md:Fix a bug in function badblocks_show().

If unack==0, it will show all bad blocks include unacknowledged-bad-blocks.

Correct. It is meant to.
The "bad_blocks" file shows all bad blocks.
The "unacknowledged_bad_blocks" file show all unacknowledged bad blocks.

Thanks,
NeilBrown

Quoted 14 lines
---
 drivers/md/md.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
drivers/md/md.c +0 -0
index ce88755..3f1b6e5 100644
@@ -8091,7 +8091,7 @@ retry:
 		int ack = BB_ACK(p[i]);
 		i++;
 
Quoted 7 lines

drivers/md/md.c retry: · line 8097

Quoted 5 lines
drivers/md/md.c +1 -1
-		if (unack && ack)
+		if ((unack ^ ack) == 0)
 			continue;
 
 		len += snprintf(page+len, PAGE_SIZE-len, "%llu %u\n",

Hi Neil:
I found this bug in kernel-3.5-rc2.I deem you may lost to apply this patch.

Thanks!

#3 lore raw
Quoted 36 lines · On Tue, 12 Jun 2012 17:04:00 +0800 kedacomkernel <[email protected]>…

On 2012-03-14 09:32 NeilBrown <[email protected]> Wrote:

Quoted 35 lines · On Thu, 8 Mar 2012 14:46:52 +0800 "majianpeng" <[email protected]> wrote:
Quoted 7 lines
Quoted 2 lines

From 58d2ba381eee4b732fca99a7311b1dcf589f57c3 Mon Sep 17 00:00:00 2001

From: majianpeng <[email protected]>
Date: Thu, 8 Mar 2012 14:37:00 +0800
Subject: [PATCH] md:Fix a bug in function badblocks_show().

If unack==0, it will show all bad blocks include unacknowledged-bad-blocks.

Correct. It is meant to.
The "bad_blocks" file shows all bad blocks.
The "unacknowledged_bad_blocks" file show all unacknowledged bad blocks.

Thanks,
NeilBrown

Quoted 18 lines
---
 drivers/md/md.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
drivers/md/md.c +1 -1
index ce88755..3f1b6e5 100644
@@ -8091,7 +8091,7 @@ retry:
 		int ack = BB_ACK(p[i]);
 		i++;
 
-		if (unack && ack)
+		if ((unack ^ ack) == 0)
 			continue;
 
Quoted 5 lines
Quoted 3 lines

drivers/md/md.c retry: · line 8097

Quoted 1 line
drivers/md/md.c +0 -0
 		len += snprintf(page+len, PAGE_SIZE-len, "%llu %u\n",

Hi Neil:
I found this bug in kernel-3.5-rc2.I deem you may lost to apply this patch.

No, I didn't lose it. I deliberately chose not to apply it.
As I said, the current behaviour is correct. Please read the message that you replied to.

NeilBrown