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-rw-r--r--fs/jbd/journal.c64
1 files changed, 21 insertions, 43 deletions
diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c
index f810047a719..5d14243499d 100644
--- a/fs/jbd/journal.c
+++ b/fs/jbd/journal.c
@@ -35,6 +35,7 @@
#include <linux/kthread.h>
#include <linux/poison.h>
#include <linux/proc_fs.h>
+#include <linux/debugfs.h>
#include <asm/uaccess.h>
#include <asm/page.h>
@@ -1851,64 +1852,41 @@ void journal_put_journal_head(struct journal_head *jh)
}
/*
- * /proc tunables
+ * debugfs tunables
*/
-#if defined(CONFIG_JBD_DEBUG)
-int journal_enable_debug;
-EXPORT_SYMBOL(journal_enable_debug);
-#endif
+#ifdef CONFIG_JBD_DEBUG
-#if defined(CONFIG_JBD_DEBUG) && defined(CONFIG_PROC_FS)
+u8 journal_enable_debug __read_mostly;
+EXPORT_SYMBOL(journal_enable_debug);
-static struct proc_dir_entry *proc_jbd_debug;
+static struct dentry *jbd_debugfs_dir;
+static struct dentry *jbd_debug;
-static int read_jbd_debug(char *page, char **start, off_t off,
- int count, int *eof, void *data)
+static void __init jbd_create_debugfs_entry(void)
{
- int ret;
-
- ret = sprintf(page + off, "%d\n", journal_enable_debug);
- *eof = 1;
- return ret;
+ jbd_debugfs_dir = debugfs_create_dir("jbd", NULL);
+ if (jbd_debugfs_dir)
+ jbd_debug = debugfs_create_u8("jbd-debug", S_IRUGO,
+ jbd_debugfs_dir,
+ &journal_enable_debug);
}
-static int write_jbd_debug(struct file *file, const char __user *buffer,
- unsigned long count, void *data)
+static void __exit jbd_remove_debugfs_entry(void)
{
- char buf[32];
-
- if (count > ARRAY_SIZE(buf) - 1)
- count = ARRAY_SIZE(buf) - 1;
- if (copy_from_user(buf, buffer, count))
- return -EFAULT;
- buf[ARRAY_SIZE(buf) - 1] = '\0';
- journal_enable_debug = simple_strtoul(buf, NULL, 10);
- return count;
+ debugfs_remove(jbd_debug);
+ debugfs_remove(jbd_debugfs_dir);
}
-#define JBD_PROC_NAME "sys/fs/jbd-debug"
+#else
-static void __init create_jbd_proc_entry(void)
+static inline void jbd_create_debugfs_entry(void)
{
- proc_jbd_debug = create_proc_entry(JBD_PROC_NAME, 0644, NULL);
- if (proc_jbd_debug) {
- /* Why is this so hard? */
- proc_jbd_debug->read_proc = read_jbd_debug;
- proc_jbd_debug->write_proc = write_jbd_debug;
- }
}
-static void __exit remove_jbd_proc_entry(void)
+static inline void jbd_remove_debugfs_entry(void)
{
- if (proc_jbd_debug)
- remove_proc_entry(JBD_PROC_NAME, NULL);
}
-#else
-
-#define create_jbd_proc_entry() do {} while (0)
-#define remove_jbd_proc_entry() do {} while (0)
-
#endif
struct kmem_cache *jbd_handle_cache;
@@ -1965,7 +1943,7 @@ static int __init journal_init(void)
ret = journal_init_caches();
if (ret != 0)
journal_destroy_caches();
- create_jbd_proc_entry();
+ jbd_create_debugfs_entry();
return ret;
}
@@ -1976,7 +1954,7 @@ static void __exit journal_exit(void)
if (n)
printk(KERN_EMERG "JBD: leaked %d journal_heads!\n", n);
#endif
- remove_jbd_proc_entry();
+ jbd_remove_debugfs_entry();
journal_destroy_caches();
}