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Message-ID: <e4cb7950-c88b-478a-80cc-ef2f244bf484@huawei.com>
Date: Fri, 13 Sep 2024 18:49:57 +0800
From: Hongbo Li <lihongbo22@...wei.com>
To: Riyan Dhiman <riyandhiman14@...il.com>, <kent.overstreet@...ux.dev>
CC: <linux-bcachefs@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] bcachefs: Change opts param to const pointer in
bch2_opts_to_text
On 2024/9/13 2:35, Riyan Dhiman wrote:
> Convert struct bch_opts opts to const struct bch_opts *opts in
> bch2_opts_to_text() function paramter. This improves efficiency by
> avoiding structure copying and reflects the function's read-only
> access to opts.
>
> Fixes: 283ba1b92b1c (bcachefs: bch2_opts_to_text())
> Signed-off-by: Riyan Dhiman <riyandhiman14@...il.com>
> ---
> Compile tested only.
>
> fs/bcachefs/fs.c | 2 +-
> fs/bcachefs/opts.c | 4 ++--
> fs/bcachefs/opts.h | 2 +-
> 3 files changed, 4 insertions(+), 4 deletions(-)
>
Reviewed-by: Hongbo Li <lihongbo22@...wei.com>
> diff --git a/fs/bcachefs/fs.c b/fs/bcachefs/fs.c
> index e44794f7c6a0..1a2ba8472cb1 100644
> --- a/fs/bcachefs/fs.c
> +++ b/fs/bcachefs/fs.c
> @@ -1924,7 +1924,7 @@ static int bch2_show_options(struct seq_file *seq, struct dentry *root)
> struct bch_fs *c = root->d_sb->s_fs_info;
> struct printbuf buf = PRINTBUF;
>
> - bch2_opts_to_text(&buf, c->opts, c, c->disk_sb.sb,
> + bch2_opts_to_text(&buf, &c->opts, c, c->disk_sb.sb,
> OPT_MOUNT, OPT_HIDDEN, OPT_SHOW_MOUNT_STYLE);
> printbuf_nul_terminate(&buf);
> seq_puts(seq, buf.buf);
> diff --git a/fs/bcachefs/opts.c b/fs/bcachefs/opts.c
> index 232be8a44051..6216ab5d5c81 100644
> --- a/fs/bcachefs/opts.c
> +++ b/fs/bcachefs/opts.c
> @@ -444,7 +444,7 @@ void bch2_opt_to_text(struct printbuf *out,
> }
>
> void bch2_opts_to_text(struct printbuf *out,
> - struct bch_opts opts,
> + const struct bch_opts *opts,
> struct bch_fs *c, struct bch_sb *sb,
> unsigned show_mask, unsigned hide_mask,
> unsigned flags)
> @@ -457,7 +457,7 @@ void bch2_opts_to_text(struct printbuf *out,
> if ((opt->flags & hide_mask) || !(opt->flags & show_mask))
> continue;
>
> - u64 v = bch2_opt_get_by_id(&opts, i);
> + u64 v = bch2_opt_get_by_id(opts, i);
> if (v == bch2_opt_get_by_id(&bch2_opts_default, i))
> continue;
>
> diff --git a/fs/bcachefs/opts.h b/fs/bcachefs/opts.h
> index cb2e244a2429..78e1991dc4be 100644
> --- a/fs/bcachefs/opts.h
> +++ b/fs/bcachefs/opts.h
> @@ -606,7 +606,7 @@ int bch2_opt_parse(struct bch_fs *, const struct bch_option *,
> void bch2_opt_to_text(struct printbuf *, struct bch_fs *, struct bch_sb *,
> const struct bch_option *, u64, unsigned);
> void bch2_opts_to_text(struct printbuf *,
> - struct bch_opts,
> + const struct bch_opts *,
> struct bch_fs *, struct bch_sb *,
> unsigned, unsigned, unsigned);
>
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