diff options
| author | Christoph Hellwig <hch@lst.de> | 2018-04-13 19:44:18 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2018-05-16 07:23:35 +0200 |
| commit | fddda2b7b521185f3aa018f9559eb33b0aee53a9 (patch) | |
| tree | ece18b3d82822f8eaefd8b0afa2f93307e83b253 /fs/fscache | |
| parent | proc: add a proc_create_reg helper (diff) | |
| download | linux-fddda2b7b521185f3aa018f9559eb33b0aee53a9.tar.xz linux-fddda2b7b521185f3aa018f9559eb33b0aee53a9.zip | |
proc: introduce proc_create_seq{,_data}
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 <hch@lst.de>
Diffstat (limited to 'fs/fscache')
| -rw-r--r-- | fs/fscache/histogram.c | 17 | ||||
| -rw-r--r-- | fs/fscache/internal.h | 3 | ||||
| -rw-r--r-- | fs/fscache/proc.c | 4 |
3 files changed, 5 insertions, 19 deletions
diff --git a/fs/fscache/histogram.c b/fs/fscache/histogram.c index 15a3d042247e..9a13e9e15b69 100644 --- a/fs/fscache/histogram.c +++ b/fs/fscache/histogram.c @@ -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, -}; diff --git a/fs/fscache/internal.h b/fs/fscache/internal.h index 500650f938fe..53cfd0b34c38 100644 --- a/fs/fscache/internal.h +++ b/fs/fscache/internal.h @@ -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) diff --git a/fs/fscache/proc.c b/fs/fscache/proc.c index 1d9e4951a597..459df553ea09 100644 --- a/fs/fscache/proc.c +++ b/fs/fscache/proc.c @@ -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 |