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Date: Sun, 29 Nov 2020 15:13:51 -0700
From: Andreas Dilger <adilger@...ger.ca>
To: Jan Kara <jack@...e.cz>
Cc: Ted Tso <tytso@....edu>, linux-ext4@...r.kernel.org
Subject: Re: [PATCH 05/12] ext4: Move functions in super.c
On Nov 27, 2020, at 4:33 AM, Jan Kara <jack@...e.cz> wrote:
>
> Just move error info related functions in super.c close to
> ext4_handle_error(). We'll want to combine save_error_info() with
> ext4_handle_error() and this makes change more obvious and saves a
> forward declaration as well. No functional change.
>
> Signed-off-by: Jan Kara <jack@...e.cz>
Reviewed-by: Andreas Dilger <adilger@...ger.ca>
> ---
> fs/ext4/super.c | 196 ++++++++++++++++++++++++++++----------------------------
> 1 file changed, 98 insertions(+), 98 deletions(-)
>
> diff --git a/fs/ext4/super.c b/fs/ext4/super.c
> index dddaadc55475..7948c07d0a90 100644
> --- a/fs/ext4/super.c
> +++ b/fs/ext4/super.c
> @@ -423,104 +423,6 @@ static time64_t __ext4_get_tstamp(__le32 *lo, __u8 *hi)
> #define ext4_get_tstamp(es, tstamp) \
> __ext4_get_tstamp(&(es)->tstamp, &(es)->tstamp ## _hi)
>
> -static void __save_error_info(struct super_block *sb, int error,
> - __u32 ino, __u64 block,
> - const char *func, unsigned int line)
> -{
> - struct ext4_super_block *es = EXT4_SB(sb)->s_es;
> - int err;
> -
> - EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS;
> - if (bdev_read_only(sb->s_bdev))
> - return;
> - es->s_state |= cpu_to_le16(EXT4_ERROR_FS);
> - ext4_update_tstamp(es, s_last_error_time);
> - strncpy(es->s_last_error_func, func, sizeof(es->s_last_error_func));
> - es->s_last_error_line = cpu_to_le32(line);
> - es->s_last_error_ino = cpu_to_le32(ino);
> - es->s_last_error_block = cpu_to_le64(block);
> - switch (error) {
> - case EIO:
> - err = EXT4_ERR_EIO;
> - break;
> - case ENOMEM:
> - err = EXT4_ERR_ENOMEM;
> - break;
> - case EFSBADCRC:
> - err = EXT4_ERR_EFSBADCRC;
> - break;
> - case 0:
> - case EFSCORRUPTED:
> - err = EXT4_ERR_EFSCORRUPTED;
> - break;
> - case ENOSPC:
> - err = EXT4_ERR_ENOSPC;
> - break;
> - case ENOKEY:
> - err = EXT4_ERR_ENOKEY;
> - break;
> - case EROFS:
> - err = EXT4_ERR_EROFS;
> - break;
> - case EFBIG:
> - err = EXT4_ERR_EFBIG;
> - break;
> - case EEXIST:
> - err = EXT4_ERR_EEXIST;
> - break;
> - case ERANGE:
> - err = EXT4_ERR_ERANGE;
> - break;
> - case EOVERFLOW:
> - err = EXT4_ERR_EOVERFLOW;
> - break;
> - case EBUSY:
> - err = EXT4_ERR_EBUSY;
> - break;
> - case ENOTDIR:
> - err = EXT4_ERR_ENOTDIR;
> - break;
> - case ENOTEMPTY:
> - err = EXT4_ERR_ENOTEMPTY;
> - break;
> - case ESHUTDOWN:
> - err = EXT4_ERR_ESHUTDOWN;
> - break;
> - case EFAULT:
> - err = EXT4_ERR_EFAULT;
> - break;
> - default:
> - err = EXT4_ERR_UNKNOWN;
> - }
> - es->s_last_error_errcode = err;
> - if (!es->s_first_error_time) {
> - es->s_first_error_time = es->s_last_error_time;
> - es->s_first_error_time_hi = es->s_last_error_time_hi;
> - strncpy(es->s_first_error_func, func,
> - sizeof(es->s_first_error_func));
> - es->s_first_error_line = cpu_to_le32(line);
> - es->s_first_error_ino = es->s_last_error_ino;
> - es->s_first_error_block = es->s_last_error_block;
> - es->s_first_error_errcode = es->s_last_error_errcode;
> - }
> - /*
> - * Start the daily error reporting function if it hasn't been
> - * started already
> - */
> - if (!es->s_error_count)
> - mod_timer(&EXT4_SB(sb)->s_err_report, jiffies + 24*60*60*HZ);
> - le32_add_cpu(&es->s_error_count, 1);
> -}
> -
> -static void save_error_info(struct super_block *sb, int error,
> - __u32 ino, __u64 block,
> - const char *func, unsigned int line)
> -{
> - __save_error_info(sb, error, ino, block, func, line);
> - if (!bdev_read_only(sb->s_bdev))
> - ext4_commit_super(sb, 1);
> -}
> -
> /*
> * The del_gendisk() function uninitializes the disk-specific data
> * structures, including the bdi structure, without telling anyone
> @@ -649,6 +551,104 @@ static bool system_going_down(void)
> || system_state == SYSTEM_RESTART;
> }
>
> +static void __save_error_info(struct super_block *sb, int error,
> + __u32 ino, __u64 block,
> + const char *func, unsigned int line)
> +{
> + struct ext4_super_block *es = EXT4_SB(sb)->s_es;
> + int err;
> +
> + EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS;
> + if (bdev_read_only(sb->s_bdev))
> + return;
> + es->s_state |= cpu_to_le16(EXT4_ERROR_FS);
> + ext4_update_tstamp(es, s_last_error_time);
> + strncpy(es->s_last_error_func, func, sizeof(es->s_last_error_func));
> + es->s_last_error_line = cpu_to_le32(line);
> + es->s_last_error_ino = cpu_to_le32(ino);
> + es->s_last_error_block = cpu_to_le64(block);
> + switch (error) {
> + case EIO:
> + err = EXT4_ERR_EIO;
> + break;
> + case ENOMEM:
> + err = EXT4_ERR_ENOMEM;
> + break;
> + case EFSBADCRC:
> + err = EXT4_ERR_EFSBADCRC;
> + break;
> + case 0:
> + case EFSCORRUPTED:
> + err = EXT4_ERR_EFSCORRUPTED;
> + break;
> + case ENOSPC:
> + err = EXT4_ERR_ENOSPC;
> + break;
> + case ENOKEY:
> + err = EXT4_ERR_ENOKEY;
> + break;
> + case EROFS:
> + err = EXT4_ERR_EROFS;
> + break;
> + case EFBIG:
> + err = EXT4_ERR_EFBIG;
> + break;
> + case EEXIST:
> + err = EXT4_ERR_EEXIST;
> + break;
> + case ERANGE:
> + err = EXT4_ERR_ERANGE;
> + break;
> + case EOVERFLOW:
> + err = EXT4_ERR_EOVERFLOW;
> + break;
> + case EBUSY:
> + err = EXT4_ERR_EBUSY;
> + break;
> + case ENOTDIR:
> + err = EXT4_ERR_ENOTDIR;
> + break;
> + case ENOTEMPTY:
> + err = EXT4_ERR_ENOTEMPTY;
> + break;
> + case ESHUTDOWN:
> + err = EXT4_ERR_ESHUTDOWN;
> + break;
> + case EFAULT:
> + err = EXT4_ERR_EFAULT;
> + break;
> + default:
> + err = EXT4_ERR_UNKNOWN;
> + }
> + es->s_last_error_errcode = err;
> + if (!es->s_first_error_time) {
> + es->s_first_error_time = es->s_last_error_time;
> + es->s_first_error_time_hi = es->s_last_error_time_hi;
> + strncpy(es->s_first_error_func, func,
> + sizeof(es->s_first_error_func));
> + es->s_first_error_line = cpu_to_le32(line);
> + es->s_first_error_ino = es->s_last_error_ino;
> + es->s_first_error_block = es->s_last_error_block;
> + es->s_first_error_errcode = es->s_last_error_errcode;
> + }
> + /*
> + * Start the daily error reporting function if it hasn't been
> + * started already
> + */
> + if (!es->s_error_count)
> + mod_timer(&EXT4_SB(sb)->s_err_report, jiffies + 24*60*60*HZ);
> + le32_add_cpu(&es->s_error_count, 1);
> +}
> +
> +static void save_error_info(struct super_block *sb, int error,
> + __u32 ino, __u64 block,
> + const char *func, unsigned int line)
> +{
> + __save_error_info(sb, error, ino, block, func, line);
> + if (!bdev_read_only(sb->s_bdev))
> + ext4_commit_super(sb, 1);
> +}
> +
> /* Deal with the reporting of failure conditions on a filesystem such as
> * inconsistencies detected or read IO failures.
> *
> --
> 2.16.4
>
Cheers, Andreas
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