linux-kernel - Re: [PATCH -next] ext4: Fix build error while CONFIG

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Message-ID: <20200401212859.GN768293@mit.edu>
Date:   Wed, 1 Apr 2020 17:28:59 -0400
From:   "Theodore Y. Ts'o" <tytso@....edu>
To:     YueHaibing <yuehaibing@...wei.com>
Cc:     adilger.kernel@...ger.ca, linux-ext4@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next] ext4: Fix build error while CONFIG_PRINTK is n

On Wed, Apr 01, 2020 at 03:30:38PM +0800, YueHaibing wrote:
> fs/ext4/balloc.c: In function ‘ext4_wait_block_bitmap’:
> fs/ext4/balloc.c:519:3: error: implicit declaration of function ‘ext4_error_err’; did you mean ‘ext4_error’? [-Werror=implicit-function-declaration]
>    ext4_error_err(sb, EIO, "Cannot read block bitmap - "
>    ^~~~~~~~~~~~~~
> 
> Add missing stub helper and fix ext4_abort.
> 
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Fixes: 2ea2fc775321 ("ext4: save all error info in save_error_info() and drop ext4_set_errno()")
> Signed-off-by: YueHaibing <yuehaibing@...wei.com>

Thanks; the patch isn't quite correct, though.  This is what I merged
into my tree's version of the "save all error info..." commit.

     	       	       	      	    	      - Ted

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index eacd2f9cc833..91eb4381cae5 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2848,6 +2848,11 @@ do {									\
 	no_printk(fmt, ##__VA_ARGS__);					\
 	__ext4_error_inode(inode, "", 0, block, 0, " ");		\
 } while (0)
+#define ext4_error_inode_err(inode, func, line, block, err, fmt, ...)	\
+do {									\
+	no_printk(fmt, ##__VA_ARGS__);					\
+	__ext4_error_inode(inode, "", 0, block, err, " ");		\
+} while (0)
 #define ext4_error_file(file, func, line, block, fmt, ...)		\
 do {									\
 	no_printk(fmt, ##__VA_ARGS__);					\
@@ -2858,10 +2863,15 @@ do {									\
 	no_printk(fmt, ##__VA_ARGS__);					\
 	__ext4_error(sb, "", 0, 0, 0, " ");				\
 } while (0)
-#define ext4_abort(sb, fmt, ...)					\
+#define ext4_error_err(sb, err, fmt, ...)				\
+do {									\
+	no_printk(fmt, ##__VA_ARGS__);					\
+	__ext4_error(sb, "", 0, err, 0, " ");				\
+} while (0)
+#define ext4_abort(sb, err, fmt, ...)					\
 do {									\
 	no_printk(fmt, ##__VA_ARGS__);					\
-	__ext4_abort(sb, "", 0, " ");					\
+	__ext4_abort(sb, "", 0, err, " ");				\
 } while (0)
 #define ext4_warning(sb, fmt, ...)					\
 do {									\