[2.6 patch] fs/jbd/: possible cleanups
From: Adrian Bunk (bunk_at_stusta.de)
Date: 07/03/05
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Date: Sun, 3 Jul 2005 01:51:12 +0200 To: Andrew Morton <akpm@osdl.org>
This patch contains the following possible cleanups:
- make needlessly global functions static
- journal.c: remove the unused global function __journal_internal_check
and move the check to journal_init
- remove the following write-only global variable:
- journal.c: current_journal
- remove the following unneeded EXPORT_SYMBOL's:
- journal.c: journal_check_used_features
- journal.c: journal_recover
Signed-off-by: Adrian Bunk <bunk@stusta.de>
---
This patch was already sent on:
- 14 Jun 2005
fs/jbd/journal.c | 41 ++++++++++++++++++-----------------------
fs/jbd/revoke.c | 3 ++-
include/linux/jbd.h | 3 ---
3 files changed, 20 insertions(+), 27 deletions(-)
--- linux-2.6.12-rc6-mm1-full/include/linux/jbd.h.old 2005-06-14 03:58:20.000000000 +0200
+++ linux-2.6.12-rc6-mm1-full/include/linux/jbd.h 2005-06-14 04:00:56.000000000 +0200
@@ -900,8 +900,6 @@
int start, int len, int bsize);
extern journal_t * journal_init_inode (struct inode *);
extern int journal_update_format (journal_t *);
-extern int journal_check_used_features
- (journal_t *, unsigned long, unsigned long, unsigned long);
extern int journal_check_available_features
(journal_t *, unsigned long, unsigned long, unsigned long);
extern int journal_set_features
@@ -914,7 +912,6 @@
extern int journal_skip_recovery (journal_t *);
extern void journal_update_superblock (journal_t *, int);
extern void __journal_abort_hard (journal_t *);
-extern void __journal_abort_soft (journal_t *, int);
extern void journal_abort (journal_t *, int);
extern int journal_errno (journal_t *);
extern void journal_ack_err (journal_t *);
--- linux-2.6.12-rc6-mm1-full/fs/jbd/journal.c.old 2005-06-14 03:57:39.000000000 +0200
+++ linux-2.6.12-rc6-mm1-full/fs/jbd/journal.c 2005-06-14 04:08:24.000000000 +0200
@@ -59,13 +59,11 @@
EXPORT_SYMBOL(journal_init_dev);
EXPORT_SYMBOL(journal_init_inode);
EXPORT_SYMBOL(journal_update_format);
-EXPORT_SYMBOL(journal_check_used_features);
EXPORT_SYMBOL(journal_check_available_features);
EXPORT_SYMBOL(journal_set_features);
EXPORT_SYMBOL(journal_create);
EXPORT_SYMBOL(journal_load);
EXPORT_SYMBOL(journal_destroy);
-EXPORT_SYMBOL(journal_recover);
EXPORT_SYMBOL(journal_update_superblock);
EXPORT_SYMBOL(journal_abort);
EXPORT_SYMBOL(journal_errno);
@@ -81,6 +79,7 @@
EXPORT_SYMBOL(journal_force_commit);
static int journal_convert_superblock_v1(journal_t *, journal_superblock_t *);
+static void __journal_abort_soft (journal_t *journal, int errno);
/*
* Helper function used to manage commit timeouts
@@ -93,16 +92,6 @@
wake_up_process(p);
}
-/* Static check for data structure consistency. There's no code
- * invoked --- we'll just get a linker failure if things aren't right.
- */
-void __journal_internal_check(void)
-{
- extern void journal_bad_superblock_size(void);
- if (sizeof(struct journal_superblock_s) != 1024)
- journal_bad_superblock_size();
-}
-
/*
* kjournald: The main thread function used to manage a logging device
* journal.
@@ -119,16 +108,12 @@
* known as checkpointing, and this thread is responsible for that job.
*/
-journal_t *current_journal; // AKPM: debug
-
-int kjournald(void *arg)
+static int kjournald(void *arg)
{
journal_t *journal = (journal_t *) arg;
transaction_t *transaction;
struct timer_list timer;
- current_journal = journal;
-
daemonize("kjournald");
/* Set up an interval timer which can be used to trigger a
@@ -1181,8 +1166,10 @@
* features. Return true (non-zero) if it does.
**/
-int journal_check_used_features (journal_t *journal, unsigned long compat,
- unsigned long ro, unsigned long incompat)
+static int journal_check_used_features (journal_t *journal,
+ unsigned long compat,
+ unsigned long ro,
+ unsigned long incompat)
{
journal_superblock_t *sb;
@@ -1439,7 +1426,7 @@
* device this journal is present.
*/
-const char *journal_dev_name(journal_t *journal, char *buffer)
+static const char *journal_dev_name(journal_t *journal, char *buffer)
{
struct block_device *bdev;
@@ -1485,7 +1472,7 @@
/* Soft abort: record the abort error status in the journal superblock,
* but don't do any other IO. */
-void __journal_abort_soft (journal_t *journal, int errno)
+static void __journal_abort_soft (journal_t *journal, int errno)
{
if (journal->j_flags & JFS_ABORT)
return;
@@ -1888,7 +1875,7 @@
static struct proc_dir_entry *proc_jbd_debug;
-int read_jbd_debug(char *page, char **start, off_t off,
+static int read_jbd_debug(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
int ret;
@@ -1898,7 +1885,7 @@
return ret;
}
-int write_jbd_debug(struct file *file, const char __user *buffer,
+static int write_jbd_debug(struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
char buf[32];
@@ -1987,6 +1974,14 @@
{
int ret;
+/* Static check for data structure consistency. There's no code
+ * invoked --- we'll just get a linker failure if things aren't right.
+ */
+ extern void journal_bad_superblock_size(void);
+ if (sizeof(struct journal_superblock_s) != 1024)
+ journal_bad_superblock_size();
+
+
ret = journal_init_caches();
if (ret != 0)
journal_destroy_caches();
--- linux-2.6.12-rc6-mm1-full/fs/jbd/revoke.c.old 2005-06-14 03:58:36.000000000 +0200
+++ linux-2.6.12-rc6-mm1-full/fs/jbd/revoke.c 2005-06-14 03:58:41.000000000 +0200
@@ -116,7 +116,8 @@
(block << (hash_shift - 12))) & (table->hash_size - 1);
}
-int insert_revoke_hash(journal_t *journal, unsigned long blocknr, tid_t seq)
+static int insert_revoke_hash(journal_t *journal, unsigned long blocknr,
+ tid_t seq)
{
struct list_head *hash_list;
struct jbd_revoke_record_s *record;
-
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