*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
- *
+ *
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
+ * along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/fs.h>
#include <linux/blkdev.h>
#include <linux/interrupt.h>
-#include <linux/smp_lock.h>
#include <linux/completion.h>
#include <linux/kthread.h>
#include <linux/buffer_head.h> /* for sync_blockdev() */
#include <linux/bio.h>
-#include <linux/suspend.h>
+#include <linux/freezer.h>
#include <linux/delay.h>
+#include <linux/mutex.h>
#include "jfs_incore.h"
#include "jfs_filsys.h"
#include "jfs_metapage.h"
*/
static LIST_HEAD(jfs_external_logs);
static struct jfs_log *dummy_log = NULL;
-static DECLARE_MUTEX(jfs_log_sem);
+static DEFINE_MUTEX(jfs_log_mutex);
/*
* forward references
* PARAMETER: cd - commit descriptor
*
* RETURN: end-of-log address
- *
+ *
* serialization: LOG_LOCK() held on entry/exit
*/
static int
* PARAMETER: log
*
* RETURN: 0
- *
+ *
* serialization: LOG_LOCK() held on entry/exit
*/
static int lmNextPage(struct jfs_log * log)
* page number - redrive pageout of the page at the head of
* pageout queue until full page has been written.
*
- * RETURN:
+ * RETURN:
*
* NOTE:
* LOGGC_LOCK serializes log group commit queue, and
* this code is called again.
*
* PARAMETERS: log - log structure
- * hard_sync - 1 to force all metadata to be written
+ * hard_sync - 1 to force all metadata to be written
*
* RETURN: 0
- *
+ *
* serialization: LOG_LOCK() held on entry/exit
*/
static int lmLogSync(struct jfs_log * log, int hard_sync)
* FUNCTION: write log SYNCPT record for specified log
*
* PARAMETERS: log - log structure
- * hard_sync - set to 1 to force metadata to be written
+ * hard_sync - set to 1 to force metadata to be written
*/
void jfs_syncpt(struct jfs_log *log, int hard_sync)
{ LOG_LOCK(log);
* insert filesystem in the active list of the log.
*
* PARAMETER: ipmnt - file system mount inode
- * iplog - log inode (out)
+ * iplog - log inode (out)
*
* RETURN:
*
if (sbi->flag & JFS_NOINTEGRITY)
return open_dummy_log(sb);
-
+
if (sbi->mntflag & JFS_INLINELOG)
return open_inline_log(sb);
- down(&jfs_log_sem);
+ mutex_lock(&jfs_log_mutex);
list_for_each_entry(log, &jfs_external_logs, journal_list) {
if (log->bdev->bd_dev == sbi->logdev) {
if (memcmp(log->uuid, sbi->loguuid,
sizeof(log->uuid))) {
jfs_warn("wrong uuid on JFS journal\n");
- up(&jfs_log_sem);
+ mutex_unlock(&jfs_log_mutex);
return -EINVAL;
}
/*
* add file system to log active file system list
*/
if ((rc = lmLogFileSystem(log, sbi, 1))) {
- up(&jfs_log_sem);
+ mutex_unlock(&jfs_log_mutex);
return rc;
}
goto journal_found;
}
if (!(log = kzalloc(sizeof(struct jfs_log), GFP_KERNEL))) {
- up(&jfs_log_sem);
+ mutex_unlock(&jfs_log_mutex);
return -ENOMEM;
}
INIT_LIST_HEAD(&log->sb_list);
log->bdev = bdev;
memcpy(log->uuid, sbi->loguuid, sizeof(log->uuid));
-
+
/*
* initialize log:
*/
sbi->log = log;
LOG_UNLOCK(log);
- up(&jfs_log_sem);
+ mutex_unlock(&jfs_log_mutex);
return 0;
/*
blkdev_put(bdev);
free: /* free log descriptor */
- up(&jfs_log_sem);
+ mutex_unlock(&jfs_log_mutex);
kfree(log);
jfs_warn("lmLogOpen: exit(%d)", rc);
{
int rc;
- down(&jfs_log_sem);
+ mutex_lock(&jfs_log_mutex);
if (!dummy_log) {
dummy_log = kzalloc(sizeof(struct jfs_log), GFP_KERNEL);
if (!dummy_log) {
- up(&jfs_log_sem);
+ mutex_unlock(&jfs_log_mutex);
return -ENOMEM;
}
INIT_LIST_HEAD(&dummy_log->sb_list);
if (rc) {
kfree(dummy_log);
dummy_log = NULL;
- up(&jfs_log_sem);
+ mutex_unlock(&jfs_log_mutex);
return rc;
}
}
list_add(&JFS_SBI(sb)->log_list, &dummy_log->sb_list);
JFS_SBI(sb)->log = dummy_log;
LOG_UNLOCK(dummy_log);
- up(&jfs_log_sem);
+ mutex_unlock(&jfs_log_mutex);
return 0;
}
* initialize the log from log superblock.
* set the log state in the superblock to LOGMOUNT and
* write SYNCPT log record.
- *
+ *
* PARAMETER: log - log structure
*
* RETURN: 0 - if ok
* -EINVAL - bad log magic number or superblock dirty
* error returned from logwait()
- *
+ *
* serialization: single first open thread
*/
int lmLogInit(struct jfs_log * log)
if (!test_bit(log_INLINELOG, &log->flag))
log->l2bsize = L2LOGPSIZE;
-
+
/* check for disabled journaling to disk */
if (log->no_integrity) {
/*
jfs_info("lmLogClose: log:0x%p", log);
- down(&jfs_log_sem);
+ mutex_lock(&jfs_log_mutex);
LOG_LOCK(log);
list_del(&sbi->log_list);
LOG_UNLOCK(log);
kfree(log);
out:
- up(&jfs_log_sem);
+ mutex_unlock(&jfs_log_mutex);
jfs_info("lmLogClose: exit(%d)", rc);
return rc;
}
set_current_state(TASK_UNINTERRUPTIBLE);
LOGGC_UNLOCK(log);
schedule();
- current->state = TASK_RUNNING;
+ __set_current_state(TASK_RUNNING);
LOGGC_LOCK(log);
remove_wait_queue(&target->gcwait, &__wait);
}
* PARAMETER: log - log inode
*
* RETURN: 0 - success
- *
+ *
* serialization: single last close thread
*/
int lmLogShutdown(struct jfs_log * log)
lrd.type = cpu_to_le16(LOG_SYNCPT);
lrd.length = 0;
lrd.log.syncpt.sync = 0;
-
+
lsn = lmWriteRecord(log, NULL, &lrd, NULL);
bp = log->bp;
lp = (struct logpage *) bp->l_ldata;
jfs_info("lmLogShutdown: lsn:0x%x page:%d eor:%d",
lsn, log->page, log->eor);
- out:
+ out:
/*
* shutdown per log i/o
*/
lbmFree(bpsuper);
return -EIO;
}
-
+
}
/*
lbmStartIO(bp);
spin_lock_irq(&log_redrive_lock);
}
- spin_unlock_irq(&log_redrive_lock);
if (freezing(current)) {
+ spin_unlock_irq(&log_redrive_lock);
refrigerator();
} else {
set_current_state(TASK_INTERRUPTIBLE);
+ spin_unlock_irq(&log_redrive_lock);
schedule();
- current->state = TASK_RUNNING;
+ __set_current_state(TASK_RUNNING);
}
} while (!kthread_should_stop());
git.openpandora.org / pandora-kernel.git / blobdiff