diff options
Diffstat (limited to 'fs/jbd2')
-rw-r--r-- | fs/jbd2/journal.c | 67 |
1 files changed, 27 insertions, 40 deletions
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index 8f530cc66d34..f290cb7cb834 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/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> @@ -1951,64 +1952,50 @@ void jbd2_journal_put_journal_head(struct journal_head *jh) } /* - * /proc tunables + * debugfs tunables */ #if defined(CONFIG_JBD2_DEBUG) -int jbd2_journal_enable_debug; +u8 jbd2_journal_enable_debug; EXPORT_SYMBOL(jbd2_journal_enable_debug); #endif -#if defined(CONFIG_JBD2_DEBUG) && defined(CONFIG_PROC_FS) +#if defined(CONFIG_JBD2_DEBUG) && defined(CONFIG_DEBUG_FS) -static struct proc_dir_entry *proc_jbd_debug; +#define JBD2_DEBUG_NAME "jbd2-debug" -static int read_jbd_debug(char *page, char **start, off_t off, - int count, int *eof, void *data) -{ - int ret; +struct dentry *jbd2_debugfs_dir, *jbd2_debug; - ret = sprintf(page + off, "%d\n", jbd2_journal_enable_debug); - *eof = 1; - return ret; +static void __init jbd2_create_debugfs_entry(void) +{ + jbd2_debugfs_dir = debugfs_create_dir("jbd2", NULL); + if (jbd2_debugfs_dir) + jbd2_debug = debugfs_create_u8(JBD2_DEBUG_NAME, S_IRUGO, + jbd2_debugfs_dir, + &jbd2_journal_enable_debug); } -static int write_jbd_debug(struct file *file, const char __user *buffer, - unsigned long count, void *data) +static void __exit jbd2_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'; - jbd2_journal_enable_debug = simple_strtoul(buf, NULL, 10); - return count; + if (jbd2_debug) + debugfs_remove(jbd2_debug); + if (jbd2_debugfs_dir) + debugfs_remove(jbd2_debugfs_dir); } -#define JBD_PROC_NAME "sys/fs/jbd2-debug" +#else -static void __init create_jbd_proc_entry(void) +static void __init jbd2_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; - } + do { + } while (0); } -static void __exit jbd2_remove_jbd_proc_entry(void) +static void __exit jbd2_remove_debugfs_entry(void) { - if (proc_jbd_debug) - remove_proc_entry(JBD_PROC_NAME, NULL); + do { + } while (0); } -#else - -#define create_jbd_proc_entry() do {} while (0) -#define jbd2_remove_jbd_proc_entry() do {} while (0) - #endif struct kmem_cache *jbd2_handle_cache; @@ -2067,7 +2054,7 @@ static int __init journal_init(void) ret = journal_init_caches(); if (ret != 0) jbd2_journal_destroy_caches(); - create_jbd_proc_entry(); + jbd2_create_debugfs_entry(); return ret; } @@ -2078,7 +2065,7 @@ static void __exit journal_exit(void) if (n) printk(KERN_EMERG "JBD: leaked %d journal_heads!\n", n); #endif - jbd2_remove_jbd_proc_entry(); + jbd2_remove_debugfs_entry(); jbd2_journal_destroy_caches(); } |