linux-kernel - [PATCH 6/6] fs/minix: remove expected error message in block_to

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Message-Id: <20200628060846.682158-7-ebiggers@kernel.org>
Date:   Sat, 27 Jun 2020 23:08:45 -0700
From:   Eric Biggers <ebiggers@...nel.org>
To:     linux-fsdevel@...r.kernel.org,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org, Qiujun Huang <hqjagain@...il.com>
Subject: [PATCH 6/6] fs/minix: remove expected error message in block_to_path()

From: Eric Biggers <ebiggers@...gle.com>

When truncating a file to a size within the last allowed logical block,
block_to_path() is called with the *next* block.  This exceeds the
limit, causing the "block %ld too big" error message to be printed.

This case isn't actually an error; there are just no more blocks past
that point.  So, remove this error message.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Biggers <ebiggers@...gle.com>
---
 fs/minix/itree_v1.c | 12 ++++++------
 fs/minix/itree_v2.c | 12 ++++++------
 2 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/fs/minix/itree_v1.c b/fs/minix/itree_v1.c
index 405573a79aab..1fed906042aa 100644
--- a/fs/minix/itree_v1.c
+++ b/fs/minix/itree_v1.c
@@ -29,12 +29,12 @@ static int block_to_path(struct inode * inode, long block, int offsets[DEPTH])
 	if (block < 0) {
 		printk("MINIX-fs: block_to_path: block %ld < 0 on dev %pg\n",
 			block, inode->i_sb->s_bdev);
-	} else if ((u64)block * BLOCK_SIZE >= inode->i_sb->s_maxbytes) {
-		if (printk_ratelimit())
-			printk("MINIX-fs: block_to_path: "
-			       "block %ld too big on dev %pg\n",
-				block, inode->i_sb->s_bdev);
-	} else if (block < 7) {
+		return 0;
+	}
+	if ((u64)block * BLOCK_SIZE >= inode->i_sb->s_maxbytes)
+		return 0;
+
+	if (block < 7) {
 		offsets[n++] = block;
 	} else if ((block -= 7) < 512) {
 		offsets[n++] = 7;
diff --git a/fs/minix/itree_v2.c b/fs/minix/itree_v2.c
index ee8af2f9e282..9d00f31a2d9d 100644
--- a/fs/minix/itree_v2.c
+++ b/fs/minix/itree_v2.c
@@ -32,12 +32,12 @@ static int block_to_path(struct inode * inode, long block, int offsets[DEPTH])
 	if (block < 0) {
 		printk("MINIX-fs: block_to_path: block %ld < 0 on dev %pg\n",
 			block, sb->s_bdev);
-	} else if ((u64)block * (u64)sb->s_blocksize >= sb->s_maxbytes) {
-		if (printk_ratelimit())
-			printk("MINIX-fs: block_to_path: "
-			       "block %ld too big on dev %pg\n",
-				block, sb->s_bdev);
-	} else if (block < DIRCOUNT) {
+		return 0;
+	}
+	if ((u64)block * (u64)sb->s_blocksize >= sb->s_maxbytes)
+		return 0;
+
+	if (block < DIRCOUNT) {
 		offsets[n++] = block;
 	} else if ((block -= DIRCOUNT) < INDIRCOUNT(sb)) {
 		offsets[n++] = DIRCOUNT;
-- 
2.27.0