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proc: introduce proc_create_single{,_data}

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Variants of proc_create{,_data} that directly take a seq_file show
callback and drastically reduces the boilerplate code in the callers.

All trivial callers converted over.

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig
2018-05-15 15:57:23 +02:00
parent 44414d82cf
commit 3f3942aca6
85 changed files with 235 additions and 1509 deletions
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14
fs/filesystems.c
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@@ -238,21 +238,9 @@ static int filesystems_proc_show(struct seq_file *m, void *v)
return 0;
}
static int filesystems_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, filesystems_proc_show, NULL);
}
static const struct file_operations filesystems_proc_fops = {
.open = filesystems_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int __init proc_filesystems_init(void)
{
proc_create("filesystems", 0, NULL, &filesystems_proc_fops);
proc_create_single("filesystems", 0, NULL, filesystems_proc_show);
return 0;
}
module_init(proc_filesystems_init);