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proc: introduce proc_create_seq{,_data}

Browse source 
Variants of proc_create{,_data} that directly take a struct seq_operations
argument and drastically reduces the boilerplate code in the callers.

All trivial callers converted over.

Signed-off-by: Christoph Hellwig <[email protected]>
This commit is contained in:
Christoph Hellwig 2018-04-13 19:44:18 +02:00
commit fddda2b7b5
53 changed files with 151 additions and 925 deletions
Download patch file Download diff file Expand all files Collapse all files

17
fs/fscache/histogram.c
View file

@ -83,24 +83,9 @@ static void fscache_histogram_stop(struct seq_file *m, void *v)
{
}
static const struct seq_operations fscache_histogram_ops = {
const struct seq_operations fscache_histogram_ops = {
.start = fscache_histogram_start,
.stop = fscache_histogram_stop,
.next = fscache_histogram_next,
.show = fscache_histogram_show,
};
/*
* open "/proc/fs/fscache/histogram" to provide latency data
*/
static int fscache_histogram_open(struct inode *inode, struct file *file)
{
return seq_open(file, &fscache_histogram_ops);
}
const struct file_operations fscache_histogram_fops = {
.open = fscache_histogram_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
};

3
fs/fscache/internal.h
View file

@ -31,6 +31,7 @@
#include <linux/fscache-cache.h>
#include <trace/events/fscache.h>
#include <linux/sched.h>
#include <linux/seq_file.h>
#define FSCACHE_MIN_THREADS 4
#define FSCACHE_MAX_THREADS 32
@ -84,7 +85,7 @@ static inline void fscache_hist(atomic_t histogram[], unsigned long start_jif)
atomic_inc(&histogram[jif]);
}
extern const struct file_operations fscache_histogram_fops;
extern const struct seq_operations fscache_histogram_ops;
#else
#define fscache_hist(hist, start_jif) do {} while (0)

4
fs/fscache/proc.c
View file

@ -32,8 +32,8 @@ int __init fscache_proc_init(void)
#endif
#ifdef CONFIG_FSCACHE_HISTOGRAM
if (!proc_create("fs/fscache/histogram", S_IFREG | 0444, NULL,
&fscache_histogram_fops))
if (!proc_create_seq("fs/fscache/histogram", S_IFREG | 0444, NULL,
&fscache_histogram_ops))
goto error_histogram;
#endif