+++ /dev/null
-#ifndef _LINUX_BACKING_DEV_H
-#define _LINUX_BACKING_DEV_H
-
-#include <linux/list.h>
-
-typedef int (congested_fn)(void *, int);
-
-enum wb_congested_state {
- WB_async_congested, /* The async (write) queue is getting full */
- WB_sync_congested, /* The sync queue is getting full */
-};
-
-struct backing_dev_info {
- struct list_head bdi_list;
- unsigned ra_pages;
- unsigned capabilities;
-
- congested_fn *congested_fn;
- void *congested_data;
-};
-
-#define BDI_CAP_NO_ACCT_DIRTY 0x00000001
-#define BDI_CAP_NO_WRITEBACK 0x00000002
-#define BDI_CAP_NO_ACCT_WB 0x00000004
-#define BDI_CAP_STABLE_WRITES 0x00000008
-#define BDI_CAP_STRICTLIMIT 0x00000010
-#define BDI_CAP_CGROUP_WRITEBACK 0x00000020
-
-static inline int bdi_congested(struct backing_dev_info *bdi, int cong_bits)
-{
- return 0;
-}
-
-static inline int __must_check bdi_setup_and_register(struct backing_dev_info *bdi,
- char *name)
-{
- bdi->capabilities = 0;
- return 0;
-}
-
-static inline void bdi_destroy(struct backing_dev_info *bdi) {}
-
-#define VM_MAX_READAHEAD 128 /* kbytes */
-
-#endif /* _LINUX_BACKING_DEV_H */