Revision 38e87880666091fe9c572a7a2ed2e771d97ca5aa authored by Chris Mason on 10 June 2011, 20:36:57 UTC, committed by Chris Mason on 10 June 2011, 20:36:57 UTC
Josef recently changed the free extent cache to look in the block group cluster for any bitmaps before trying to add a new bitmap for the same offset. This avoids BUG_ON()s due covering duplicate ranges. But it didn't go quite far enough. A given free range might span between one or more bitmaps or free space entries. The code has looping to cover this, but it doesn't check for clustered bitmaps every time. This shuffles our gotos to check for a bitmap in the cluster for every new bitmap entry we try to add. Signed-off-by: Chris Mason <chris.mason@oracle.com>
1 parent 3473f3c
ac97_bus.c
/*
* Linux driver model AC97 bus interface
*
* Author: Nicolas Pitre
* Created: Jan 14, 2005
* Copyright: (C) MontaVista Software Inc.
*
* 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
* (at your option) any later version.
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/string.h>
#include <sound/ac97_codec.h>
/*
* Let drivers decide whether they want to support given codec from their
* probe method. Drivers have direct access to the struct snd_ac97
* structure and may decide based on the id field amongst other things.
*/
static int ac97_bus_match(struct device *dev, struct device_driver *drv)
{
return 1;
}
#ifdef CONFIG_PM
static int ac97_bus_suspend(struct device *dev, pm_message_t state)
{
int ret = 0;
if (dev->driver && dev->driver->suspend)
ret = dev->driver->suspend(dev, state);
return ret;
}
static int ac97_bus_resume(struct device *dev)
{
int ret = 0;
if (dev->driver && dev->driver->resume)
ret = dev->driver->resume(dev);
return ret;
}
#endif /* CONFIG_PM */
struct bus_type ac97_bus_type = {
.name = "ac97",
.match = ac97_bus_match,
#ifdef CONFIG_PM
.suspend = ac97_bus_suspend,
.resume = ac97_bus_resume,
#endif /* CONFIG_PM */
};
static int __init ac97_bus_init(void)
{
return bus_register(&ac97_bus_type);
}
subsys_initcall(ac97_bus_init);
static void __exit ac97_bus_exit(void)
{
bus_unregister(&ac97_bus_type);
}
module_exit(ac97_bus_exit);
EXPORT_SYMBOL(ac97_bus_type);
MODULE_LICENSE("GPL");
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