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nfsd: use DEFINE_SHOW_ATTRIBUTE to define client_info_fops

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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().

Signed-off-by: ChenXiaoSong <chenxiaosong2@huawei.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
ChenXiaoSong 2022-09-23 00:31:54 +08:00 committed by Chuck Lever
parent 9beeaab8e0
commit 1d7f6b302b
1 changed files with 2 additions and 12 deletions
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14
fs/nfsd/nfs4state.c
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@ -2490,7 +2490,7 @@ 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;
@ -2530,17 +2530,7 @@ 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)