#include <linux/string.h>
#include <linux/vmalloc.h>
#include <linux/mtd/mtd.h>
-
-#include <mtd/ubi-header.h>
#include <linux/mtd/ubi.h>
+#include "ubi-media.h"
#include "scan.h"
#include "debug.h"
#define ubi_msg(fmt, ...) printk(KERN_NOTICE "UBI: " fmt "\n", ##__VA_ARGS__)
/* UBI warning messages */
#define ubi_warn(fmt, ...) printk(KERN_WARNING "UBI warning: %s: " fmt "\n", \
- __FUNCTION__, ##__VA_ARGS__)
+ __func__, ##__VA_ARGS__)
/* UBI error messages */
#define ubi_err(fmt, ...) printk(KERN_ERR "UBI error: %s: " fmt "\n", \
- __FUNCTION__, ##__VA_ARGS__)
+ __func__, ##__VA_ARGS__)
/* Lowest number PEBs reserved for bad PEB handling */
#define MIN_RESEVED_PEBS 2
#define UBI_IO_RETRIES 3
/*
- * Error codes returned by the I/O unit.
+ * Error codes returned by the I/O sub-system.
*
* UBI_IO_PEB_EMPTY: the physical eraseblock is empty, i.e. it contains only
- * 0xFF bytes
+ * %0xFF bytes
* UBI_IO_PEB_FREE: the physical eraseblock is free, i.e. it contains only a
- * valid erase counter header, and the rest are %0xFF bytes
+ * valid erase counter header, and the rest are %0xFF bytes
* UBI_IO_BAD_EC_HDR: the erase counter header is corrupted (bad magic or CRC)
* UBI_IO_BAD_VID_HDR: the volume identifier header is corrupted (bad magic or
- * CRC)
+ * CRC)
* UBI_IO_BITFLIPS: bit-flips were detected and corrected
*/
enum {
* @ec: erase counter
* @pnum: physical eraseblock number
*
- * This data structure is used in the WL unit. Each physical eraseblock has a
- * corresponding &struct wl_entry object which may be kept in different
- * RB-trees. See WL unit for details.
+ * This data structure is used in the WL sub-system. Each physical eraseblock
+ * has a corresponding &struct wl_entry object which may be kept in different
+ * RB-trees. See WL sub-system for details.
*/
struct ubi_wl_entry {
struct rb_node rb;
* @mutex: read/write mutex to implement read/write access serialization to
* the (@vol_id, @lnum) logical eraseblock
*
- * This data structure is used in the EBA unit to implement per-LEB locking.
- * When a logical eraseblock is being locked - corresponding
+ * This data structure is used in the EBA sub-system to implement per-LEB
+ * locking. When a logical eraseblock is being locked - corresponding
* &struct ubi_ltree_entry object is inserted to the lock tree (@ubi->ltree).
- * See EBA unit for details.
+ * See EBA sub-system for details.
*/
struct ubi_ltree_entry {
struct rb_node rb;
struct rw_semaphore mutex;
};
+/**
+ * struct ubi_rename_entry - volume re-name description data structure.
+ * @new_name_len: new volume name length
+ * @new_name: new volume name
+ * @remove: if not zero, this volume should be removed, not re-named
+ * @desc: descriptor of the volume
+ * @list: links re-name entries into a list
+ *
+ * This data structure is utilized in the multiple volume re-name code. Namely,
+ * UBI first creates a list of &struct ubi_rename_entry objects from the
+ * &struct ubi_rnvol_req request object, and then utilizes this list to do all
+ * the job.
+ */
+struct ubi_rename_entry {
+ int new_name_len;
+ char new_name[UBI_VOL_NAME_MAX + 1];
+ int remove;
+ struct ubi_volume_desc *desc;
+ struct list_head list;
+};
+
struct ubi_volume_desc;
/**
int alignment;
int data_pad;
int name_len;
- char name[UBI_VOL_NAME_MAX+1];
+ char name[UBI_VOL_NAME_MAX + 1];
int upd_ebs;
int ch_lnum;
#ifdef CONFIG_MTD_UBI_GLUEBI
/*
* Gluebi-related stuff may be compiled out.
- * TODO: this should not be built into UBI but should be a separate
+ * Note: this should not be built into UBI but should be a separate
* ubimtd driver which works on top of UBI and emulates MTD devices.
*/
struct ubi_volume_desc *gluebi_desc;
};
/**
- * struct ubi_volume_desc - descriptor of the UBI volume returned when it is
- * opened.
+ * struct ubi_volume_desc - UBI volume descriptor returned when it is opened.
* @vol: reference to the corresponding volume description object
* @mode: open mode (%UBI_READONLY, %UBI_READWRITE, or %UBI_EXCLUSIVE)
*/
* @vtbl_size: size of the volume table in bytes
* @vtbl: in-RAM volume table copy
* @volumes_mutex: protects on-flash volume table and serializes volume
- * changes, like creation, deletion, update, resize
+ * changes, like creation, deletion, update, re-size and re-name
*
* @max_ec: current highest erase counter value
* @mean_ec: current mean erase counter value
* @move_to, @move_to_put @erase_pending, @wl_scheduled, and @works
* fields
* @move_mutex: serializes eraseblock moves
+ * @work_sem: sycnhronizes the WL worker with use tasks
* @wl_scheduled: non-zero if the wear-leveling was scheduled
* @lookuptbl: a table to quickly find a &struct ubi_wl_entry object for any
* physical eraseblock
* @ro_mode: if the UBI device is in read-only mode
* @leb_size: logical eraseblock size
* @leb_start: starting offset of logical eraseblocks within physical
- * eraseblocks
+ * eraseblocks
* @ec_hdr_alsize: size of the EC header aligned to @hdrs_min_io_size
* @vid_hdr_alsize: size of the VID header aligned to @hdrs_min_io_size
* @vid_hdr_offset: starting offset of the volume identifier header (might be
- * unaligned)
+ * unaligned)
* @vid_hdr_aloffset: starting offset of the VID header aligned to
* @hdrs_min_io_size
* @vid_hdr_shift: contains @vid_hdr_offset - @vid_hdr_aloffset
* @peb_buf1: a buffer of PEB size used for different purposes
* @peb_buf2: another buffer of PEB size used for different purposes
* @buf_mutex: proptects @peb_buf1 and @peb_buf2
+ * @ckvol_mutex: serializes static volume checking when opening
+ * @mult_mutex: serializes operations on multiple volumes, like re-nameing
* @dbg_peb_buf: buffer of PEB size used for debugging
* @dbg_buf_mutex: proptects @dbg_peb_buf
*/
struct mutex volumes_mutex;
int max_ec;
- /* TODO: mean_ec is not updated run-time, fix */
+ /* Note, mean_ec is not updated run-time - should be fixed */
int mean_ec;
- /* EBA unit's stuff */
+ /* EBA sub-system's stuff */
unsigned long long global_sqnum;
spinlock_t ltree_lock;
struct rb_root ltree;
struct mutex alc_mutex;
- /* Wear-leveling unit's stuff */
+ /* Wear-leveling sub-system's stuff */
struct rb_root used;
struct rb_root free;
struct rb_root scrub;
int thread_enabled;
char bgt_name[sizeof(UBI_BGT_NAME_PATTERN)+2];
- /* I/O unit's stuff */
+ /* I/O sub-system's stuff */
long long flash_size;
int peb_count;
int peb_size;
void *peb_buf2;
struct mutex buf_mutex;
struct mutex ckvol_mutex;
+ struct mutex mult_mutex;
#ifdef CONFIG_MTD_UBI_DEBUG
void *dbg_peb_buf;
struct mutex dbg_buf_mutex;
/* vtbl.c */
int ubi_change_vtbl_record(struct ubi_device *ubi, int idx,
struct ubi_vtbl_record *vtbl_rec);
+int ubi_vtbl_rename_volumes(struct ubi_device *ubi,
+ struct list_head *rename_list);
int ubi_read_volume_table(struct ubi_device *ubi, struct ubi_scan_info *si);
/* vmt.c */
int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req);
-int ubi_remove_volume(struct ubi_volume_desc *desc);
+int ubi_remove_volume(struct ubi_volume_desc *desc, int no_vtbl);
int ubi_resize_volume(struct ubi_volume_desc *desc, int reserved_pebs);
+int ubi_rename_volumes(struct ubi_device *ubi, struct list_head *rename_list);
int ubi_add_volume(struct ubi_device *ubi, struct ubi_volume *vol);
void ubi_free_volume(struct ubi_device *ubi, struct ubi_volume *vol);
const void __user *buf, int count);
/* misc.c */
-int ubi_calc_data_len(const struct ubi_device *ubi, const void *buf, int length);
+int ubi_calc_data_len(const struct ubi_device *ubi, const void *buf,
+ int length);
int ubi_check_volume(struct ubi_device *ubi, int vol_id);
void ubi_calculate_reserved(struct ubi_device *ubi);
int ubi_eba_copy_leb(struct ubi_device *ubi, int from, int to,
struct ubi_vid_hdr *vid_hdr);
int ubi_eba_init_scan(struct ubi_device *ubi, struct ubi_scan_info *si);
-void ubi_eba_close(const struct ubi_device *ubi);
/* wl.c */
int ubi_wl_get_peb(struct ubi_device *ubi, int dtype);
projects / linux-2.6 / blobdiff