#include <linux/mm.h>
#include <linux/suspend.h>
#include <linux/pagemap.h>
-#include <linux/kthread.h>
-#include <linux/poison.h>
-#include <linux/proc_fs.h>
-
#include <asm/uaccess.h>
#include <asm/page.h>
+#include <linux/proc_fs.h>
EXPORT_SYMBOL(journal_start);
EXPORT_SYMBOL(journal_restart);
static int journal_convert_superblock_v1(journal_t *, journal_superblock_t *);
static void __journal_abort_soft (journal_t *journal, int errno);
-static int journal_create_jbd_slab(size_t slab_size);
/*
* Helper function used to manage commit timeouts
static int kjournald(void *arg)
{
- journal_t *journal = arg;
+ journal_t *journal = (journal_t *) arg;
transaction_t *transaction;
+ struct timer_list timer;
- /*
- * Set up an interval timer which can be used to trigger a commit wakeup
- * after the commit interval expires
- */
- setup_timer(&journal->j_commit_timer, commit_timeout,
- (unsigned long)current);
+ daemonize("kjournald");
+
+ /* Set up an interval timer which can be used to trigger a
+ commit wakeup after the commit interval expires */
+ init_timer(&timer);
+ timer.data = (unsigned long) current;
+ timer.function = commit_timeout;
+ journal->j_commit_timer = &timer;
/* Record that the journal thread is running */
journal->j_task = current;
if (journal->j_commit_sequence != journal->j_commit_request) {
jbd_debug(1, "OK, requests differ\n");
spin_unlock(&journal->j_state_lock);
- del_timer_sync(&journal->j_commit_timer);
+ del_timer_sync(journal->j_commit_timer);
journal_commit_transaction(journal);
spin_lock(&journal->j_state_lock);
goto loop;
end_loop:
spin_unlock(&journal->j_state_lock);
- del_timer_sync(&journal->j_commit_timer);
+ del_timer_sync(journal->j_commit_timer);
journal->j_task = NULL;
wake_up(&journal->j_wait_done_commit);
jbd_debug(1, "Journal thread exiting.\n");
static void journal_start_thread(journal_t *journal)
{
- kthread_run(kjournald, journal, "kjournald");
+ kernel_thread(kjournald, journal, CLONE_VM|CLONE_FS|CLONE_FILES);
wait_event(journal->j_wait_done_commit, journal->j_task != 0);
}
char *tmp;
jbd_unlock_bh_state(bh_in);
- tmp = jbd_slab_alloc(bh_in->b_size, GFP_NOFS);
+ tmp = jbd_rep_kmalloc(bh_in->b_size, GFP_NOFS);
jbd_lock_bh_state(bh_in);
if (jh_in->b_frozen_data) {
- jbd_slab_free(tmp, bh_in->b_size);
+ kfree(tmp);
goto repeat;
}
init_waitqueue_head(&journal->j_wait_checkpoint);
init_waitqueue_head(&journal->j_wait_commit);
init_waitqueue_head(&journal->j_wait_updates);
- mutex_init(&journal->j_barrier);
- mutex_init(&journal->j_checkpoint_mutex);
+ init_MUTEX(&journal->j_barrier);
+ init_MUTEX(&journal->j_checkpoint_sem);
spin_lock_init(&journal->j_revoke_lock);
spin_lock_init(&journal->j_list_lock);
spin_lock_init(&journal->j_state_lock);
int journal_load(journal_t *journal)
{
int err;
- journal_superblock_t *sb;
err = load_superblock(journal);
if (err)
return err;
- sb = journal->j_superblock;
/* If this is a V2 superblock, then we have to check the
* features flags on it. */
if (journal->j_format_version >= 2) {
+ journal_superblock_t *sb = journal->j_superblock;
+
if ((sb->s_feature_ro_compat &
~cpu_to_be32(JFS_KNOWN_ROCOMPAT_FEATURES)) ||
(sb->s_feature_incompat &
}
}
- /*
- * Create a slab for this blocksize
- */
- err = journal_create_jbd_slab(cpu_to_be32(sb->s_blocksize));
- if (err)
- return err;
-
/* Let the recovery code check whether it needs to recover any
* data from the journal. */
if (journal_recover(journal))
return kmalloc(size, flags | (retry ? __GFP_NOFAIL : 0));
}
-/*
- * jbd slab management: create 1k, 2k, 4k, 8k slabs as needed
- * and allocate frozen and commit buffers from these slabs.
- *
- * Reason for doing this is to avoid, SLAB_DEBUG - since it could
- * cause bh to cross page boundary.
- */
-
-#define JBD_MAX_SLABS 5
-#define JBD_SLAB_INDEX(size) (size >> 11)
-
-static kmem_cache_t *jbd_slab[JBD_MAX_SLABS];
-static const char *jbd_slab_names[JBD_MAX_SLABS] = {
- "jbd_1k", "jbd_2k", "jbd_4k", NULL, "jbd_8k"
-};
-
-static void journal_destroy_jbd_slabs(void)
-{
- int i;
-
- for (i = 0; i < JBD_MAX_SLABS; i++) {
- if (jbd_slab[i])
- kmem_cache_destroy(jbd_slab[i]);
- jbd_slab[i] = NULL;
- }
-}
-
-static int journal_create_jbd_slab(size_t slab_size)
-{
- int i = JBD_SLAB_INDEX(slab_size);
-
- BUG_ON(i >= JBD_MAX_SLABS);
-
- /*
- * Check if we already have a slab created for this size
- */
- if (jbd_slab[i])
- return 0;
-
- /*
- * Create a slab and force alignment to be same as slabsize -
- * this will make sure that allocations won't cross the page
- * boundary.
- */
- jbd_slab[i] = kmem_cache_create(jbd_slab_names[i],
- slab_size, slab_size, 0, NULL, NULL);
- if (!jbd_slab[i]) {
- printk(KERN_EMERG "JBD: no memory for jbd_slab cache\n");
- return -ENOMEM;
- }
- return 0;
-}
-
-void * jbd_slab_alloc(size_t size, gfp_t flags)
-{
- int idx;
-
- idx = JBD_SLAB_INDEX(size);
- BUG_ON(jbd_slab[idx] == NULL);
- return kmem_cache_alloc(jbd_slab[idx], flags | __GFP_NOFAIL);
-}
-
-void jbd_slab_free(void *ptr, size_t size)
-{
- int idx;
-
- idx = JBD_SLAB_INDEX(size);
- BUG_ON(jbd_slab[idx] == NULL);
- kmem_cache_free(jbd_slab[idx], ptr);
-}
-
/*
* Journal_head storage management
*/
{
#ifdef CONFIG_JBD_DEBUG
atomic_dec(&nr_journal_heads);
- memset(jh, JBD_POISON_FREE, sizeof(*jh));
+ memset(jh, 0x5b, sizeof(*jh));
#endif
kmem_cache_free(journal_head_cache, jh);
}
printk(KERN_WARNING "%s: freeing "
"b_frozen_data\n",
__FUNCTION__);
- jbd_slab_free(jh->b_frozen_data, bh->b_size);
+ kfree(jh->b_frozen_data);
}
if (jh->b_committed_data) {
printk(KERN_WARNING "%s: freeing "
"b_committed_data\n",
__FUNCTION__);
- jbd_slab_free(jh->b_committed_data, bh->b_size);
+ kfree(jh->b_committed_data);
}
bh->b_private = NULL;
jh->b_bh = NULL; /* debug, really */
journal_destroy_revoke_caches();
journal_destroy_journal_head_cache();
journal_destroy_handle_cache();
- journal_destroy_jbd_slabs();
}
static int __init journal_init(void)
git://git.onelab.eu / linux-2.6.git / blobdiff