Re: [PATCH] ext4: super.c: Update logging style using PR_CONT

From: Jan Kara
Date: Wed Oct 12 2016 - 06:43:21 EST


On Tue 11-10-16 18:57:58, Joe Perches wrote:
> Recent commit require line continuing printks to use PR_CONT.
>
> Update super.c to use PR_CONT and use vsprintf extension %pV
> to avoid a printk/vprintk/printk("\n") sequence as well.

Looks good. You can add:

Reviewed-by: Jan Kara <jack@xxxxxxx>

Honza

>
> Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
> ---
> fs/ext4/super.c | 21 +++++++++++----------
> 1 file changed, 11 insertions(+), 10 deletions(-)
>
> diff --git a/fs/ext4/super.c b/fs/ext4/super.c
> index 6db81fbcbaa6..20da99da0a34 100644
> --- a/fs/ext4/super.c
> +++ b/fs/ext4/super.c
> @@ -597,14 +597,15 @@ void __ext4_std_error(struct super_block *sb, const char *function,
> void __ext4_abort(struct super_block *sb, const char *function,
> unsigned int line, const char *fmt, ...)
> {
> + struct va_format vaf;
> va_list args;
>
> save_error_info(sb, function, line);
> va_start(args, fmt);
> - printk(KERN_CRIT "EXT4-fs error (device %s): %s:%d: ", sb->s_id,
> - function, line);
> - vprintk(fmt, args);
> - printk("\n");
> + vaf.fmt = fmt;
> + vaf.va = &args;
> + printk(KERN_CRIT "EXT4-fs error (device %s): %s:%d: %pV\n",
> + sb->s_id, function, line, &vaf);
> va_end(args);
>
> if ((sb->s_flags & MS_RDONLY) == 0) {
> @@ -2715,12 +2716,12 @@ static void print_daily_error_info(unsigned long arg)
> es->s_first_error_func,
> le32_to_cpu(es->s_first_error_line));
> if (es->s_first_error_ino)
> - printk(": inode %u",
> + printk(KERN_CONT ": inode %u",
> le32_to_cpu(es->s_first_error_ino));
> if (es->s_first_error_block)
> - printk(": block %llu", (unsigned long long)
> + printk(KERN_CONT ": block %llu", (unsigned long long)
> le64_to_cpu(es->s_first_error_block));
> - printk("\n");
> + printk(KERN_CONT "\n");
> }
> if (es->s_last_error_time) {
> printk(KERN_NOTICE "EXT4-fs (%s): last error at time %u: %.*s:%d",
> @@ -2729,12 +2730,12 @@ static void print_daily_error_info(unsigned long arg)
> es->s_last_error_func,
> le32_to_cpu(es->s_last_error_line));
> if (es->s_last_error_ino)
> - printk(": inode %u",
> + printk(KERN_CONT ": inode %u",
> le32_to_cpu(es->s_last_error_ino));
> if (es->s_last_error_block)
> - printk(": block %llu", (unsigned long long)
> + printk(KERN_CONT ": block %llu", (unsigned long long)
> le64_to_cpu(es->s_last_error_block));
> - printk("\n");
> + printk(KERN_CONT "\n");
> }
> mod_timer(&sbi->s_err_report, jiffies + 24*60*60*HZ); /* Once a day */
> }
> --
> 2.10.0.rc2.1.g053435c
>
> --
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--
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR