> On Sep 22, 2022, at 12:31 PM, ChenXiaoSong <chenxiaosong2@xxxxxxxxxx> wrote:
>
> Use DEFINE_SHOW_ATTRIBUTE helper macro to simplify the code.
>
> inode is converted from seq_file->file instead of seq_file->private in
> client_info_show().
Generally speaking, the patch description should explain why
a change is being made. We can already see that @inode is
converted by looking at the diff below, so the above comment
doesn't add value. Same remark applies to 4/5.
What might work better: "The underlying inode needed by
client_info_show() is already available via struct seq_file.
Thus it is safe to replace client_info_open() with the open
function implicitly defined by DEFINE_SHOW_ATTRIBUTE()."
I'll apply these as-is to nfsd for-next to get them into the
testing pipeline. Thanks!
> Signed-off-by: ChenXiaoSong <chenxiaosong2@xxxxxxxxxx>
> ---
> fs/nfsd/nfs4state.c | 14 ++------------
> 1 file changed, 2 insertions(+), 12 deletions(-)
>
> diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
> index c5d199d7e6b4..4017721a04c7 100644
> --- a/fs/nfsd/nfs4state.c
> +++ b/fs/nfsd/nfs4state.c
> @@ -2478,7 +2478,7 @@ static const char *cb_state2str(int state)
>
> static int client_info_show(struct seq_file *m, void *v)
> {
> - struct inode *inode = m->private;
> + struct inode *inode = file_inode(m->file);
> struct nfs4_client *clp;
> u64 clid;
>
> @@ -2518,17 +2518,7 @@ static int client_info_show(struct seq_file *m, void *v)
> return 0;
> }
>
> -static int client_info_open(struct inode *inode, struct file *file)
> -{
> - return single_open(file, client_info_show, inode);
> -}
> -
> -static const struct file_operations client_info_fops = {
> - .open = client_info_open,
> - .read = seq_read,
> - .llseek = seq_lseek,
> - .release = single_release,
> -};
> +DEFINE_SHOW_ATTRIBUTE(client_info);
>
> static void *states_start(struct seq_file *s, loff_t *pos)
> __acquires(&clp->cl_lock)
> --
> 2.31.1
>
--
Chuck Lever
