1 files changed, 0 insertions, 306 deletions
diff --git a/libdde_linux26/contrib/mm/.svn/text-base/backing-dev.c.svn-base b/libdde_linux26/contrib/mm/.svn/text-base/backing-dev.c.svn-base
deleted file mode 100644
index 8e858744..00000000
--- a/libdde_linux26/contrib/mm/.svn/text-base/backing-dev.c.svn-base
+++ /dev/null
@@ -1,306 +0,0 @@
-
-#include <linux/wait.h>
-#include <linux/backing-dev.h>
-#include <linux/fs.h>
-#include <linux/sched.h>
-#include <linux/module.h>
-#include <linux/writeback.h>
-#include <linux/device.h>
-
-
-static struct class *bdi_class;
-
-#ifdef CONFIG_DEBUG_FS
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
-
-static struct dentry *bdi_debug_root;
-
-static void bdi_debug_init(void)
-{
-	bdi_debug_root = debugfs_create_dir("bdi", NULL);
-}
-
-static int bdi_debug_stats_show(struct seq_file *m, void *v)
-{
-	struct backing_dev_info *bdi = m->private;
-	unsigned long background_thresh;
-	unsigned long dirty_thresh;
-	unsigned long bdi_thresh;
-
-	get_dirty_limits(&background_thresh, &dirty_thresh, &bdi_thresh, bdi);
-
-#define K(x) ((x) << (PAGE_SHIFT - 10))
-	seq_printf(m,
-		   "BdiWriteback:     %8lu kB\n"
-		   "BdiReclaimable:   %8lu kB\n"
-		   "BdiDirtyThresh:   %8lu kB\n"
-		   "DirtyThresh:      %8lu kB\n"
-		   "BackgroundThresh: %8lu kB\n",
-		   (unsigned long) K(bdi_stat(bdi, BDI_WRITEBACK)),
-		   (unsigned long) K(bdi_stat(bdi, BDI_RECLAIMABLE)),
-		   K(bdi_thresh),
-		   K(dirty_thresh),
-		   K(background_thresh));
-#undef K
-
-	return 0;
-}
-
-static int bdi_debug_stats_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, bdi_debug_stats_show, inode->i_private);
-}
-
-static const struct file_operations bdi_debug_stats_fops = {
-	.open		= bdi_debug_stats_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-};
-
-static void bdi_debug_register(struct backing_dev_info *bdi, const char *name)
-{
-	bdi->debug_dir = debugfs_create_dir(name, bdi_debug_root);
-	bdi->debug_stats = debugfs_create_file("stats", 0444, bdi->debug_dir,
-					       bdi, &bdi_debug_stats_fops);
-}
-
-static void bdi_debug_unregister(struct backing_dev_info *bdi)
-{
-	debugfs_remove(bdi->debug_stats);
-	debugfs_remove(bdi->debug_dir);
-}
-#else
-static inline void bdi_debug_init(void)
-{
-}
-static inline void bdi_debug_register(struct backing_dev_info *bdi,
-				      const char *name)
-{
-}
-static inline void bdi_debug_unregister(struct backing_dev_info *bdi)
-{
-}
-#endif
-
-static ssize_t read_ahead_kb_store(struct device *dev,
-				  struct device_attribute *attr,
-				  const char *buf, size_t count)
-{
-	struct backing_dev_info *bdi = dev_get_drvdata(dev);
-	char *end;
-	unsigned long read_ahead_kb;
-	ssize_t ret = -EINVAL;
-
-	read_ahead_kb = simple_strtoul(buf, &end, 10);
-	if (*buf && (end[0] == '\0' || (end[0] == '\n' && end[1] == '\0'))) {
-		bdi->ra_pages = read_ahead_kb >> (PAGE_SHIFT - 10);
-		ret = count;
-	}
-	return ret;
-}
-
-#define K(pages) ((pages) << (PAGE_SHIFT - 10))
-
-#define BDI_SHOW(name, expr)						\
-static ssize_t name##_show(struct device *dev,				\
-			   struct device_attribute *attr, char *page)	\
-{									\
-	struct backing_dev_info *bdi = dev_get_drvdata(dev);		\
-									\
-	return snprintf(page, PAGE_SIZE-1, "%lld\n", (long long)expr);	\
-}
-
-BDI_SHOW(read_ahead_kb, K(bdi->ra_pages))
-
-static ssize_t min_ratio_store(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t count)
-{
-	struct backing_dev_info *bdi = dev_get_drvdata(dev);
-	char *end;
-	unsigned int ratio;
-	ssize_t ret = -EINVAL;
-
-	ratio = simple_strtoul(buf, &end, 10);
-	if (*buf && (end[0] == '\0' || (end[0] == '\n' && end[1] == '\0'))) {
-		ret = bdi_set_min_ratio(bdi, ratio);
-		if (!ret)
-			ret = count;
-	}
-	return ret;
-}
-BDI_SHOW(min_ratio, bdi->min_ratio)
-
-static ssize_t max_ratio_store(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t count)
-{
-	struct backing_dev_info *bdi = dev_get_drvdata(dev);
-	char *end;
-	unsigned int ratio;
-	ssize_t ret = -EINVAL;
-
-	ratio = simple_strtoul(buf, &end, 10);
-	if (*buf && (end[0] == '\0' || (end[0] == '\n' && end[1] == '\0'))) {
-		ret = bdi_set_max_ratio(bdi, ratio);
-		if (!ret)
-			ret = count;
-	}
-	return ret;
-}
-BDI_SHOW(max_ratio, bdi->max_ratio)
-
-#define __ATTR_RW(attr) __ATTR(attr, 0644, attr##_show, attr##_store)
-
-static struct device_attribute bdi_dev_attrs[] = {
-	__ATTR_RW(read_ahead_kb),
-	__ATTR_RW(min_ratio),
-	__ATTR_RW(max_ratio),
-	__ATTR_NULL,
-};
-
-static __init int bdi_class_init(void)
-{
-	bdi_class = class_create(THIS_MODULE, "bdi");
-	bdi_class->dev_attrs = bdi_dev_attrs;
-	bdi_debug_init();
-	return 0;
-}
-
-postcore_initcall(bdi_class_init);
-
-int bdi_register(struct backing_dev_info *bdi, struct device *parent,
-		const char *fmt, ...)
-{
-	va_list args;
-	int ret = 0;
-	struct device *dev;
-
-	if (bdi->dev)	/* The driver needs to use separate queues per device */
-		goto exit;
-
-	va_start(args, fmt);
-	dev = device_create_vargs(bdi_class, parent, MKDEV(0, 0), bdi, fmt, args);
-	va_end(args);
-	if (IS_ERR(dev)) {
-		ret = PTR_ERR(dev);
-		goto exit;
-	}
-
-	bdi->dev = dev;
-	bdi_debug_register(bdi, dev_name(dev));
-
-exit:
-	return ret;
-}
-EXPORT_SYMBOL(bdi_register);
-
-int bdi_register_dev(struct backing_dev_info *bdi, dev_t dev)
-{
-	return bdi_register(bdi, NULL, "%u:%u", MAJOR(dev), MINOR(dev));
-}
-EXPORT_SYMBOL(bdi_register_dev);
-
-void bdi_unregister(struct backing_dev_info *bdi)
-{
-	if (bdi->dev) {
-		bdi_debug_unregister(bdi);
-		device_unregister(bdi->dev);
-		bdi->dev = NULL;
-	}
-}
-EXPORT_SYMBOL(bdi_unregister);
-
-int bdi_init(struct backing_dev_info *bdi)
-{
-	int i;
-	int err;
-
-	bdi->dev = NULL;
-
-	bdi->min_ratio = 0;
-	bdi->max_ratio = 100;
-	bdi->max_prop_frac = PROP_FRAC_BASE;
-
-	for (i = 0; i < NR_BDI_STAT_ITEMS; i++) {
-		err = percpu_counter_init(&bdi->bdi_stat[i], 0);
-		if (err)
-			goto err;
-	}
-
-	bdi->dirty_exceeded = 0;
-	err = prop_local_init_percpu(&bdi->completions);
-
-	if (err) {
-err:
-		while (i--)
-			percpu_counter_destroy(&bdi->bdi_stat[i]);
-	}
-
-	return err;
-}
-EXPORT_SYMBOL(bdi_init);
-
-void bdi_destroy(struct backing_dev_info *bdi)
-{
-	int i;
-
-	bdi_unregister(bdi);
-
-	for (i = 0; i < NR_BDI_STAT_ITEMS; i++)
-		percpu_counter_destroy(&bdi->bdi_stat[i]);
-
-	prop_local_destroy_percpu(&bdi->completions);
-}
-EXPORT_SYMBOL(bdi_destroy);
-
-static wait_queue_head_t congestion_wqh[2] = {
-		__WAIT_QUEUE_HEAD_INITIALIZER(congestion_wqh[0]),
-		__WAIT_QUEUE_HEAD_INITIALIZER(congestion_wqh[1])
-	};
-
-
-void clear_bdi_congested(struct backing_dev_info *bdi, int rw)
-{
-	enum bdi_state bit;
-	wait_queue_head_t *wqh = &congestion_wqh[rw];
-
-	bit = (rw == WRITE) ? BDI_write_congested : BDI_read_congested;
-	clear_bit(bit, &bdi->state);
-	smp_mb__after_clear_bit();
-	if (waitqueue_active(wqh))
-		wake_up(wqh);
-}
-EXPORT_SYMBOL(clear_bdi_congested);
-
-void set_bdi_congested(struct backing_dev_info *bdi, int rw)
-{
-	enum bdi_state bit;
-
-	bit = (rw == WRITE) ? BDI_write_congested : BDI_read_congested;
-	set_bit(bit, &bdi->state);
-}
-EXPORT_SYMBOL(set_bdi_congested);
-
-/**
- * congestion_wait - wait for a backing_dev to become uncongested
- * @rw: READ or WRITE
- * @timeout: timeout in jiffies
- *
- * Waits for up to @timeout jiffies for a backing_dev (any backing_dev) to exit
- * write congestion.  If no backing_devs are congested then just wait for the
- * next write to be completed.
- */
-long congestion_wait(int rw, long timeout)
-{
-	long ret;
-	DEFINE_WAIT(wait);
-	wait_queue_head_t *wqh = &congestion_wqh[rw];
-
-	prepare_to_wait(wqh, &wait, TASK_UNINTERRUPTIBLE);
-	ret = io_schedule_timeout(timeout);
-	finish_wait(wqh, &wait);
-	return ret;
-}
-EXPORT_SYMBOL(congestion_wait);
-