linux-kernel - [PATCH 06/12] badblocks: fix the using of MAX

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Message-Id: <20250221081109.734170-7-zhengqixing@huaweicloud.com>
Date: Fri, 21 Feb 2025 16:11:03 +0800
From: Zheng Qixing <zhengqixing@...weicloud.com>
To: axboe@...nel.dk,
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Subject: [PATCH 06/12] badblocks: fix the using of MAX_BADBLOCKS

From: Li Nan <linan122@...wei.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@...wei.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;
 
 	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