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authorChristoph Hellwig <hch@lst.de>2018-05-15 16:57:23 +0300
committerChristoph Hellwig <hch@lst.de>2018-05-16 08:23:35 +0300
commit3f3942aca6da351a12543aa776467791b63b3a78 (patch)
tree31030e086ea36920e07078ea2289b9b72c0b2939 /fs/fscache
parent44414d82cfe0f68cb59d0a42f599ccd893ae0032 (diff)
downloadlinux-3f3942aca6da351a12543aa776467791b63b3a78.tar.xz
proc: introduce proc_create_single{,_data}
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>
Diffstat (limited to 'fs/fscache')
-rw-r--r--fs/fscache/internal.h2
-rw-r--r--fs/fscache/proc.c4
-rw-r--r--fs/fscache/stats.c17
3 files changed, 4 insertions, 19 deletions
diff --git a/fs/fscache/internal.h b/fs/fscache/internal.h
index 53cfd0b34c38..f83328a7f048 100644
--- a/fs/fscache/internal.h
+++ b/fs/fscache/internal.h
@@ -295,7 +295,7 @@ static inline void fscache_stat_d(atomic_t *stat)
#define __fscache_stat(stat) (stat)
-extern const struct file_operations fscache_stats_fops;
+int fscache_stats_show(struct seq_file *m, void *v);
#else
#define __fscache_stat(stat) (NULL)
diff --git a/fs/fscache/proc.c b/fs/fscache/proc.c
index 459df553ea09..49a8c90414bc 100644
--- a/fs/fscache/proc.c
+++ b/fs/fscache/proc.c
@@ -26,8 +26,8 @@ int __init fscache_proc_init(void)
goto error_dir;
#ifdef CONFIG_FSCACHE_STATS
- if (!proc_create("fs/fscache/stats", S_IFREG | 0444, NULL,
- &fscache_stats_fops))
+ if (!proc_create_single("fs/fscache/stats", S_IFREG | 0444, NULL,
+ fscache_stats_show))
goto error_stats;
#endif
diff --git a/fs/fscache/stats.c b/fs/fscache/stats.c
index fcc8c2f2690e..00564a1dfd76 100644
--- a/fs/fscache/stats.c
+++ b/fs/fscache/stats.c
@@ -138,7 +138,7 @@ atomic_t fscache_n_cache_culled_objects;
/*
* display the general statistics
*/
-static int fscache_stats_show(struct seq_file *m, void *v)
+int fscache_stats_show(struct seq_file *m, void *v)
{
seq_puts(m, "FS-Cache statistics\n");
@@ -284,18 +284,3 @@ static int fscache_stats_show(struct seq_file *m, void *v)
atomic_read(&fscache_n_cache_culled_objects));
return 0;
}
-
-/*
- * open "/proc/fs/fscache/stats" allowing provision of a statistical summary
- */
-static int fscache_stats_open(struct inode *inode, struct file *file)
-{
- return single_open(file, fscache_stats_show, NULL);
-}
-
-const struct file_operations fscache_stats_fops = {
- .open = fscache_stats_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};