JFS: switch to seq_files

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>

1 files changed, 28 insertions, 34 deletions

diff --git a/fs/jfs/jfs_debug.c b/fs/jfs/jfs_debug.c
index bf6ab19b86ee..6a73de84bcef 100644
--- a/fs/jfs/jfs_debug.c
+++ b/fs/jfs/jfs_debug.c
@@ -21,6 +21,7 @@
 #include <linux/ctype.h>
 #include <linux/module.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <asm/uaccess.h>
 #include "jfs_incore.h"
 #include "jfs_filsys.h"
@@ -30,29 +31,19 @@
 
 static struct proc_dir_entry *base;
 #ifdef CONFIG_JFS_DEBUG
-static int loglevel_read(char *page, char **start, off_t off,
-                         int count, int *eof, void *data)
+static int jfs_loglevel_proc_show(struct seq_file *m, void *v)
 {
-        int len;
-
-        len = sprintf(page, "%d\n", jfsloglevel);
-
-        len -= off;
-        *start = page + off;
-
-        if (len > count)
-                len = count;
-        else
-                *eof = 1;
-
-        if (len < 0)
-                len = 0;
+        seq_printf(m, "%d\n", jfsloglevel);
+        return 0;
+}
 
-        return len;
+static int jfs_loglevel_proc_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, jfs_loglevel_proc_show, NULL);
 }
 
-static int loglevel_write(struct file *file, const char __user *buffer,
-                        unsigned long count, void *data)
+static ssize_t jfs_loglevel_proc_write(struct file *file,
+                const char __user *buffer, size_t count, loff_t *ppos)
 {
         char c;
 
@@ -65,22 +56,30 @@ static int loglevel_write(struct file *file, const char __user *buffer,
         jfsloglevel = c - '0';
         return count;
 }
+
+static const struct file_operations jfs_loglevel_proc_fops = {
+        .owner          = THIS_MODULE,
+        .open           = jfs_loglevel_proc_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+        .write          = jfs_loglevel_proc_write,
+};
 #endif
 
 static struct {
         const char      *name;
-        read_proc_t     *read_fn;
-        write_proc_t    *write_fn;
+        const struct file_operations *proc_fops;
 } Entries[] = {
 #ifdef CONFIG_JFS_STATISTICS
-        { "lmstats",    jfs_lmstats_read, },
-        { "txstats",    jfs_txstats_read, },
-        { "xtstat",     jfs_xtstat_read, },
-        { "mpstat",     jfs_mpstat_read, },
+        { "lmstats",    &jfs_lmstats_proc_fops, },
+        { "txstats",    &jfs_txstats_proc_fops, },
+        { "xtstat",     &jfs_xtstat_proc_fops, },
+        { "mpstat",     &jfs_mpstat_proc_fops, },
 #endif
 #ifdef CONFIG_JFS_DEBUG
-        { "TxAnchor",   jfs_txanchor_read, },
-        { "loglevel",   loglevel_read, loglevel_write }
+        { "TxAnchor",   &jfs_txanchor_proc_fops, },
+        { "loglevel",   &jfs_loglevel_proc_fops }
 #endif
 };
 #define NPROCENT        ARRAY_SIZE(Entries)
@@ -93,13 +92,8 @@ void jfs_proc_init(void)
                 return;
         base->owner = THIS_MODULE;
 
-        for (i = 0; i < NPROCENT; i++) {
-                struct proc_dir_entry *p;
-                if ((p = create_proc_entry(Entries[i].name, 0, base))) {
-                        p->read_proc = Entries[i].read_fn;
-                        p->write_proc = Entries[i].write_fn;
-                }
-        }
+        for (i = 0; i < NPROCENT; i++)
+                proc_create(Entries[i].name, 0, base, Entries[i].proc_fops);
 }
 
 void jfs_proc_clean(void)