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Date: Mon, 14 Dec 2020 11:25:23 -0800
From: harshad shirwadkar <harshadshirwadkar@...il.com>
To: Jan Kara <jack@...e.cz>
Cc: Ted Tso <tytso@....edu>,
Ext4 Developers List <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH 09/12] ext4: Drop sync argument of ext4_commit_super()
Looks good to me.
Reviewed-by: Harshad Shirwadkar <harshadshirwadkar@...il.com>
On Fri, Nov 27, 2020 at 10:25 AM Jan Kara <jack@...e.cz> wrote:
>
> Everybody passes 1 as sync argument of ext4_commit_super(). Just drop
> it.
>
> Signed-off-by: Jan Kara <jack@...e.cz>
> ---
> fs/ext4/super.c | 47 ++++++++++++++++++++++-------------------------
> 1 file changed, 22 insertions(+), 25 deletions(-)
>
> diff --git a/fs/ext4/super.c b/fs/ext4/super.c
> index 73a09b73fc11..aae12ea1466a 100644
> --- a/fs/ext4/super.c
> +++ b/fs/ext4/super.c
> @@ -65,7 +65,7 @@ static struct ratelimit_state ext4_mount_msg_ratelimit;
> static int ext4_load_journal(struct super_block *, struct ext4_super_block *,
> unsigned long journal_devnum);
> static int ext4_show_options(struct seq_file *seq, struct dentry *root);
> -static int ext4_commit_super(struct super_block *sb, int sync);
> +static int ext4_commit_super(struct super_block *sb);
> static int ext4_mark_recovery_complete(struct super_block *sb,
> struct ext4_super_block *es);
> static int ext4_clear_journal_err(struct super_block *sb,
> @@ -621,7 +621,7 @@ static void save_error_info(struct super_block *sb, int error,
> {
> __save_error_info(sb, error, ino, block, func, line);
> if (!bdev_read_only(sb->s_bdev))
> - ext4_commit_super(sb, 1);
> + ext4_commit_super(sb);
> }
>
> /* Deal with the reporting of failure conditions on a filesystem such as
> @@ -686,7 +686,7 @@ static void flush_stashed_error_work(struct work_struct *work)
> struct ext4_sb_info *sbi = container_of(work, struct ext4_sb_info,
> s_error_work);
>
> - ext4_commit_super(sbi->s_sb, 1);
> + ext4_commit_super(sbi->s_sb);
> }
>
> #define ext4_error_ratelimit(sb) \
> @@ -1151,7 +1151,7 @@ static void ext4_put_super(struct super_block *sb)
> es->s_state = cpu_to_le16(sbi->s_mount_state);
> }
> if (!sb_rdonly(sb))
> - ext4_commit_super(sb, 1);
> + ext4_commit_super(sb);
>
> rcu_read_lock();
> group_desc = rcu_dereference(sbi->s_group_desc);
> @@ -2641,7 +2641,7 @@ static int ext4_setup_super(struct super_block *sb, struct ext4_super_block *es,
> if (sbi->s_journal)
> ext4_set_feature_journal_needs_recovery(sb);
>
> - err = ext4_commit_super(sb, 1);
> + err = ext4_commit_super(sb);
> done:
> if (test_opt(sb, DEBUG))
> printk(KERN_INFO "[EXT4 FS bs=%lu, gc=%u, "
> @@ -4862,7 +4862,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
> if (DUMMY_ENCRYPTION_ENABLED(sbi) && !sb_rdonly(sb) &&
> !ext4_has_feature_encrypt(sb)) {
> ext4_set_feature_encrypt(sb);
> - ext4_commit_super(sb, 1);
> + ext4_commit_super(sb);
> }
>
> /*
> @@ -5415,7 +5415,7 @@ static int ext4_load_journal(struct super_block *sb,
> es->s_journal_dev = cpu_to_le32(journal_devnum);
>
> /* Make sure we flush the recovery flag to disk. */
> - ext4_commit_super(sb, 1);
> + ext4_commit_super(sb);
> }
>
> return 0;
> @@ -5425,7 +5425,7 @@ static int ext4_load_journal(struct super_block *sb,
> return err;
> }
>
> -static int ext4_commit_super(struct super_block *sb, int sync)
> +static int ext4_commit_super(struct super_block *sb)
> {
> struct ext4_sb_info *sbi = EXT4_SB(sb);
> struct ext4_super_block *es = EXT4_SB(sb)->s_es;
> @@ -5502,8 +5502,7 @@ static int ext4_commit_super(struct super_block *sb, int sync)
>
> BUFFER_TRACE(sbh, "marking dirty");
> ext4_superblock_csum_set(sb);
> - if (sync)
> - lock_buffer(sbh);
> + lock_buffer(sbh);
> if (buffer_write_io_error(sbh) || !buffer_uptodate(sbh)) {
> /*
> * Oh, dear. A previous attempt to write the
> @@ -5519,16 +5518,14 @@ static int ext4_commit_super(struct super_block *sb, int sync)
> set_buffer_uptodate(sbh);
> }
> mark_buffer_dirty(sbh);
> - if (sync) {
> - unlock_buffer(sbh);
> - error = __sync_dirty_buffer(sbh,
> - REQ_SYNC | (test_opt(sb, BARRIER) ? REQ_FUA : 0));
> - if (buffer_write_io_error(sbh)) {
> - ext4_msg(sb, KERN_ERR, "I/O error while writing "
> - "superblock");
> - clear_buffer_write_io_error(sbh);
> - set_buffer_uptodate(sbh);
> - }
> + unlock_buffer(sbh);
> + error = __sync_dirty_buffer(sbh,
> + REQ_SYNC | (test_opt(sb, BARRIER) ? REQ_FUA : 0));
> + if (buffer_write_io_error(sbh)) {
> + ext4_msg(sb, KERN_ERR, "I/O error while writing "
> + "superblock");
> + clear_buffer_write_io_error(sbh);
> + set_buffer_uptodate(sbh);
> }
> return error;
> }
> @@ -5559,7 +5556,7 @@ static int ext4_mark_recovery_complete(struct super_block *sb,
>
> if (ext4_has_feature_journal_needs_recovery(sb) && sb_rdonly(sb)) {
> ext4_clear_feature_journal_needs_recovery(sb);
> - ext4_commit_super(sb, 1);
> + ext4_commit_super(sb);
> }
> out:
> jbd2_journal_unlock_updates(journal);
> @@ -5601,7 +5598,7 @@ static int ext4_clear_journal_err(struct super_block *sb,
>
> EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS;
> es->s_state |= cpu_to_le16(EXT4_ERROR_FS);
> - ext4_commit_super(sb, 1);
> + ext4_commit_super(sb);
>
> jbd2_journal_clear_err(journal);
> jbd2_journal_update_sb_errno(journal);
> @@ -5703,7 +5700,7 @@ static int ext4_freeze(struct super_block *sb)
> ext4_clear_feature_journal_needs_recovery(sb);
> }
>
> - error = ext4_commit_super(sb, 1);
> + error = ext4_commit_super(sb);
> out:
> if (journal)
> /* we rely on upper layer to stop further updates */
> @@ -5725,7 +5722,7 @@ static int ext4_unfreeze(struct super_block *sb)
> ext4_set_feature_journal_needs_recovery(sb);
> }
>
> - ext4_commit_super(sb, 1);
> + ext4_commit_super(sb);
> return 0;
> }
>
> @@ -5985,7 +5982,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
> }
>
> if (sbi->s_journal == NULL && !(old_sb_flags & SB_RDONLY)) {
> - err = ext4_commit_super(sb, 1);
> + err = ext4_commit_super(sb);
> if (err)
> goto restore_opts;
> }
> --
> 2.16.4
>
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