[PATCH 25/39] drbd: switch to proc_create_single

[Christoph Hellwig]

And stop messing with try_module_get on THIS_MODULE, which doesn't make
any sense here.

Signed-off-by: Christoph Hellwig <h...@lst.de>
---
 drivers/block/drbd/drbd_int.h  |  2 +-
 drivers/block/drbd/drbd_main.c |  3 ++-
 drivers/block/drbd/drbd_proc.c | 34 +---------------------------------
 3 files changed, 4 insertions(+), 35 deletions(-)

diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index 06ecee1b528e..461ddec04e7c 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -1643,7 +1643,7 @@ void drbd_bump_write_ordering(struct drbd_resource 
*resource, struct drbd_backin
 
 /* drbd_proc.c */
 extern struct proc_dir_entry *drbd_proc;
-extern const struct file_operations drbd_proc_fops;
+int drbd_seq_show(struct seq_file *seq, void *v);
 
 /* drbd_actlog.c */
 extern bool drbd_al_begin_io_prepare(struct drbd_device *device, struct 
drbd_interval *i);
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 185f1ef00a7c..c2d154faac02 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -3010,7 +3010,8 @@ static int __init drbd_init(void)
                goto fail;
 
        err = -ENOMEM;
-       drbd_proc = proc_create_data("drbd", S_IFREG | S_IRUGO , NULL, 
&drbd_proc_fops, NULL);
+       drbd_proc = proc_create_single("drbd", S_IFREG | S_IRUGO , NULL,
+                       drbd_seq_show);
        if (!drbd_proc) {
                pr_err("unable to register proc file\n");
                goto fail;
diff --git a/drivers/block/drbd/drbd_proc.c b/drivers/block/drbd/drbd_proc.c
index 582caeb0de86..74ef29247bb5 100644
--- a/drivers/block/drbd/drbd_proc.c
+++ b/drivers/block/drbd/drbd_proc.c
@@ -33,18 +33,7 @@
 #include <linux/drbd.h>
 #include "drbd_int.h"
 
-static int drbd_proc_open(struct inode *inode, struct file *file);
-static int drbd_proc_release(struct inode *inode, struct file *file);
-
-
 struct proc_dir_entry *drbd_proc;
-const struct file_operations drbd_proc_fops = {
-       .owner          = THIS_MODULE,
-       .open           = drbd_proc_open,
-       .read           = seq_read,
-       .llseek         = seq_lseek,
-       .release        = drbd_proc_release,
-};
 
 static void seq_printf_with_thousands_grouping(struct seq_file *seq, long v)
 {
@@ -235,7 +224,7 @@ static void drbd_syncer_progress(struct drbd_device 
*device, struct seq_file *se
        }
 }
 
-static int drbd_seq_show(struct seq_file *seq, void *v)
+int drbd_seq_show(struct seq_file *seq, void *v)
 {
        int i, prev_i = -1;
        const char *sn;
@@ -345,24 +334,3 @@ static int drbd_seq_show(struct seq_file *seq, void *v)
 
        return 0;
 }
-
-static int drbd_proc_open(struct inode *inode, struct file *file)
-{
-       int err;
-
-       if (try_module_get(THIS_MODULE)) {
-               err = single_open(file, drbd_seq_show, NULL);
-               if (err)
-                       module_put(THIS_MODULE);
-               return err;
-       }
-       return -ENODEV;
-}
-
-static int drbd_proc_release(struct inode *inode, struct file *file)
-{
-       module_put(THIS_MODULE);
-       return single_release(inode, file);
-}
-
-/* PROC FS stuff end */
-- 
2.17.0