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UBI: improve internal interfaces

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Pass volume description object to the EBA function which makes
more sense, and EBA function do not have to find the volume
description object by volume ID.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
This commit is contained in:
Artem Bityutskiy 2007-12-16 20:00:38 +02:00
parent 77c722dde9
commit 89b96b6929
10 changed files with 68 additions and 72 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/mtd/ubi/build.c
View File

@ -249,7 +249,7 @@ static void kill_volumes(struct ubi_device *ubi)
for (i = 0; i < ubi->vtbl_slots; i++)
if (ubi->volumes[i])
ubi_free_volume(ubi, i);
ubi_free_volume(ubi, ubi->volumes[i]);
}
/**
@ -300,7 +300,7 @@ static int uif_init(struct ubi_device *ubi)
for (i = 0; i < ubi->vtbl_slots; i++)
if (ubi->volumes[i]) {
err = ubi_add_volume(ubi, i);
err = ubi_add_volume(ubi, ubi->volumes[i]);
if (err) {
ubi_err("cannot add volume %d", i);
goto out_volumes;

6
drivers/mtd/ubi/cdev.c
View File

@ -249,7 +249,7 @@ static ssize_t vol_cdev_read(struct file *file, __user char *buf, size_t count,
if (off + len >= vol->usable_leb_size)
len = vol->usable_leb_size - off;
err = ubi_eba_read_leb(ubi, vol_id, lnum, tbuf, off, len, 0);
err = ubi_eba_read_leb(ubi, vol, lnum, tbuf, off, len, 0);
if (err)
break;
@ -339,7 +339,7 @@ static ssize_t vol_cdev_direct_write(struct file *file, const char __user *buf,
break;
}
err = ubi_eba_write_leb(ubi, vol_id, lnum, tbuf, off, len,
err = ubi_eba_write_leb(ubi, vol, lnum, tbuf, off, len,
UBI_UNKNOWN);
if (err)
break;
@ -484,7 +484,7 @@ static int vol_cdev_ioctl(struct inode *inode, struct file *file,
}
dbg_msg("erase LEB %d:%d", vol->vol_id, lnum);
err = ubi_eba_unmap_leb(ubi, vol->vol_id, lnum);
err = ubi_eba_unmap_leb(ubi, vol, lnum);
if (err)
break;

51
drivers/mtd/ubi/eba.c
View File

@ -289,17 +289,17 @@ static void leb_write_unlock(struct ubi_device *ubi, int vol_id, int lnum)
/**
* ubi_eba_unmap_leb - un-map logical eraseblock.
* @ubi: UBI device description object
* @vol_id: volume ID
* @vol: volume description object
* @lnum: logical eraseblock number
*
* This function un-maps logical eraseblock @lnum and schedules corresponding
* physical eraseblock for erasure. Returns zero in case of success and a
* negative error code in case of failure.
*/
int ubi_eba_unmap_leb(struct ubi_device *ubi, int vol_id, int lnum)
int ubi_eba_unmap_leb(struct ubi_device *ubi, struct ubi_volume *vol,
int lnum)
{
int idx = vol_id2idx(ubi, vol_id), err, pnum;
struct ubi_volume *vol = ubi->volumes[idx];
int err, pnum, vol_id = vol->vol_id;
if (ubi->ro_mode)
return -EROFS;
@ -326,7 +326,7 @@ out_unlock:
/**
* ubi_eba_read_leb - read data.
* @ubi: UBI device description object
* @vol_id: volume ID
* @vol: volume description object
* @lnum: logical eraseblock number
* @buf: buffer to store the read data
* @offset: offset from where to read
@ -342,12 +342,11 @@ out_unlock:
* returned for any volume type if an ECC error was detected by the MTD device
* driver. Other negative error cored may be returned in case of other errors.
*/
int ubi_eba_read_leb(struct ubi_device *ubi, int vol_id, int lnum, void *buf,
int offset, int len, int check)
int ubi_eba_read_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
void *buf, int offset, int len, int check)
{
int err, pnum, scrub = 0, idx = vol_id2idx(ubi, vol_id);
int err, pnum, scrub = 0, vol_id = vol->vol_id;
struct ubi_vid_hdr *vid_hdr;
struct ubi_volume *vol = ubi->volumes[idx];
uint32_t uninitialized_var(crc);
err = leb_read_lock(ubi, vol_id, lnum);
@ -555,7 +554,7 @@ write_error:
/**
* ubi_eba_write_leb - write data to dynamic volume.
* @ubi: UBI device description object
* @vol_id: volume ID
* @vol: volume description object
* @lnum: logical eraseblock number
* @buf: the data to write
* @offset: offset within the logical eraseblock where to write
@ -563,15 +562,14 @@ write_error:
* @dtype: data type
*
* This function writes data to logical eraseblock @lnum of a dynamic volume
* @vol_id. Returns zero in case of success and a negative error code in case
* @vol. Returns zero in case of success and a negative error code in case
* of failure. In case of error, it is possible that something was still
* written to the flash media, but may be some garbage.
*/
int ubi_eba_write_leb(struct ubi_device *ubi, int vol_id, int lnum,
int ubi_eba_write_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
const void *buf, int offset, int len, int dtype)
{
int idx = vol_id2idx(ubi, vol_id), err, pnum, tries = 0;
struct ubi_volume *vol = ubi->volumes[idx];
int err, pnum, tries = 0, vol_id = vol->vol_id;
struct ubi_vid_hdr *vid_hdr;
if (ubi->ro_mode)
@ -590,7 +588,8 @@ int ubi_eba_write_leb(struct ubi_device *ubi, int vol_id, int lnum,
if (err) {
ubi_warn("failed to write data to PEB %d", pnum);
if (err == -EIO && ubi->bad_allowed)
err = recover_peb(ubi, pnum, vol_id, lnum, buf, offset, len);
err = recover_peb(ubi, pnum, vol_id, lnum, buf,
offset, len);
if (err)
ubi_ro_mode(ubi);
}
@ -678,7 +677,7 @@ write_error:
/**
* ubi_eba_write_leb_st - write data to static volume.
* @ubi: UBI device description object
* @vol_id: volume ID
* @vol: volume description object
* @lnum: logical eraseblock number
* @buf: data to write
* @len: how many bytes to write
@ -686,7 +685,7 @@ write_error:
* @used_ebs: how many logical eraseblocks will this volume contain
*
* This function writes data to logical eraseblock @lnum of static volume
* @vol_id. The @used_ebs argument should contain total number of logical
* @vol. The @used_ebs argument should contain total number of logical
* eraseblock in this static volume.
*
* When writing to the last logical eraseblock, the @len argument doesn't have
@ -698,12 +697,11 @@ write_error:
* volumes. This function returns zero in case of success and a negative error
* code in case of failure.
*/
int ubi_eba_write_leb_st(struct ubi_device *ubi, int vol_id, int lnum,
const void *buf, int len, int dtype, int used_ebs)
int ubi_eba_write_leb_st(struct ubi_device *ubi, struct ubi_volume *vol,
int lnum, const void *buf, int len, int dtype,
int used_ebs)
{
int err, pnum, tries = 0, data_size = len;
int idx = vol_id2idx(ubi, vol_id);
struct ubi_volume *vol = ubi->volumes[idx];
int err, pnum, tries = 0, data_size = len, vol_id = vol->vol_id;
struct ubi_vid_hdr *vid_hdr;
uint32_t crc;
@ -799,7 +797,7 @@ write_error:
/*
* ubi_eba_atomic_leb_change - change logical eraseblock atomically.
* @ubi: UBI device description object
* @vol_id: volume ID
* @vol: volume escription object
* @lnum: logical eraseblock number
* @buf: data to write
* @len: how many bytes to write
@ -814,11 +812,10 @@ write_error:
* UBI reserves one LEB for the "atomic LEB change" operation, so only one
* LEB change may be done at a time. This is ensured by @ubi->alc_mutex.
*/
int ubi_eba_atomic_leb_change(struct ubi_device *ubi, int vol_id, int lnum,
const void *buf, int len, int dtype)
int ubi_eba_atomic_leb_change(struct ubi_device *ubi, struct ubi_volume *vol,
int lnum, const void *buf, int len, int dtype)
{
int err, pnum, tries = 0, idx = vol_id2idx(ubi, vol_id);
struct ubi_volume *vol = ubi->volumes[idx];
int err, pnum, tries = 0, vol_id = vol->vol_id;
struct ubi_vid_hdr *vid_hdr;
uint32_t crc;

9
drivers/mtd/ubi/gluebi.c
View File

@ -129,8 +129,7 @@ static int gluebi_read(struct mtd_info *mtd, loff_t from, size_t len,
if (to_read > total_read)
to_read = total_read;
err = ubi_eba_read_leb(ubi, vol->vol_id, lnum, buf, offs,
to_read, 0);
err = ubi_eba_read_leb(ubi, vol, lnum, buf, offs, to_read, 0);
if (err)
break;
@ -187,8 +186,8 @@ static int gluebi_write(struct mtd_info *mtd, loff_t to, size_t len,
if (to_write > total_written)
to_write = total_written;
err = ubi_eba_write_leb(ubi, vol->vol_id, lnum, buf, offs,
to_write, UBI_UNKNOWN);
err = ubi_eba_write_leb(ubi, vol, lnum, buf, offs, to_write,
UBI_UNKNOWN);
if (err)
break;
@ -237,7 +236,7 @@ static int gluebi_erase(struct mtd_info *mtd, struct erase_info *instr)
return -EROFS;
for (i = 0; i < count; i++) {
err = ubi_eba_unmap_leb(ubi, vol->vol_id, lnum + i);
err = ubi_eba_unmap_leb(ubi, vol, lnum + i);
if (err)
goto out_err;
}

12
drivers/mtd/ubi/kapi.c
View File

@ -332,7 +332,7 @@ int ubi_leb_read(struct ubi_volume_desc *desc, int lnum, char *buf, int offset,
if (len == 0)
return 0;
err = ubi_eba_read_leb(ubi, vol_id, lnum, buf, offset, len, check);
err = ubi_eba_read_leb(ubi, vol, lnum, buf, offset, len, check);
if (err && err == -EBADMSG && vol->vol_type == UBI_STATIC_VOLUME) {
ubi_warn("mark volume %d as corrupted", vol_id);
vol->corrupted = 1;
@ -399,7 +399,7 @@ int ubi_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
if (len == 0)
return 0;
return ubi_eba_write_leb(ubi, vol_id, lnum, buf, offset, len, dtype);
return ubi_eba_write_leb(ubi, vol, lnum, buf, offset, len, dtype);
}
EXPORT_SYMBOL_GPL(ubi_leb_write);
@ -448,7 +448,7 @@ int ubi_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
if (len == 0)
return 0;
return ubi_eba_atomic_leb_change(ubi, vol_id, lnum, buf, len, dtype);
return ubi_eba_atomic_leb_change(ubi, vol, lnum, buf, len, dtype);
}
EXPORT_SYMBOL_GPL(ubi_leb_change);
@ -481,7 +481,7 @@ int ubi_leb_erase(struct ubi_volume_desc *desc, int lnum)
if (vol->upd_marker)
return -EBADF;
err = ubi_eba_unmap_leb(ubi, vol_id, lnum);
err = ubi_eba_unmap_leb(ubi, vol, lnum);
if (err)
return err;
@ -542,7 +542,7 @@ int ubi_leb_unmap(struct ubi_volume_desc *desc, int lnum)
if (vol->upd_marker)
return -EBADF;
return ubi_eba_unmap_leb(ubi, vol_id, lnum);
return ubi_eba_unmap_leb(ubi, vol, lnum);
}
EXPORT_SYMBOL_GPL(ubi_leb_unmap);
@ -587,7 +587,7 @@ int ubi_leb_map(struct ubi_volume_desc *desc, int lnum, int dtype)
if (vol->eba_tbl[lnum] >= 0)
return -EBADMSG;
return ubi_eba_write_leb(ubi, vol_id, lnum, NULL, 0, 0, dtype);
return ubi_eba_write_leb(ubi, vol, lnum, NULL, 0, 0, dtype);
}
EXPORT_SYMBOL_GPL(ubi_leb_map);

2
drivers/mtd/ubi/misc.c
View File

@ -79,7 +79,7 @@ int ubi_check_volume(struct ubi_device *ubi, int vol_id)
else
size = vol->usable_leb_size;
err = ubi_eba_read_leb(ubi, vol_id, i, buf, 0, size, 1);
err = ubi_eba_read_leb(ubi, vol, i, buf, 0, size, 1);
if (err) {
if (err == -EBADMSG)
err = 1;

21
drivers/mtd/ubi/ubi.h
View File

@ -410,8 +410,8 @@ int ubi_read_volume_table(struct ubi_device *ubi, struct ubi_scan_info *si);
int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req);
int ubi_remove_volume(struct ubi_volume_desc *desc);
int ubi_resize_volume(struct ubi_volume_desc *desc, int reserved_pebs);
int ubi_add_volume(struct ubi_device *ubi, int vol_id);
void ubi_free_volume(struct ubi_device *ubi, int vol_id);
int ubi_add_volume(struct ubi_device *ubi, struct ubi_volume *vol);
void ubi_free_volume(struct ubi_device *ubi, struct ubi_volume *vol);
/* upd.c */
int ubi_start_update(struct ubi_device *ubi, int vol_id, long long bytes);
@ -435,16 +435,17 @@ void ubi_gluebi_updated(struct ubi_volume *vol);
#endif
/* eba.c */
int ubi_eba_unmap_leb(struct ubi_device *ubi, int vol_id, int lnum);
int ubi_eba_read_leb(struct ubi_device *ubi, int vol_id, int lnum, void *buf,
int offset, int len, int check);
int ubi_eba_write_leb(struct ubi_device *ubi, int vol_id, int lnum,
int ubi_eba_unmap_leb(struct ubi_device *ubi, struct ubi_volume *vol,
int lnum);
int ubi_eba_read_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
void *buf, int offset, int len, int check);
int ubi_eba_write_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
const void *buf, int offset, int len, int dtype);
int ubi_eba_write_leb_st(struct ubi_device *ubi, int vol_id, int lnum,
const void *buf, int len, int dtype,
int ubi_eba_write_leb_st(struct ubi_device *ubi, struct ubi_volume *vol,
int lnum, const void *buf, int len, int dtype,
int used_ebs);
int ubi_eba_atomic_leb_change(struct ubi_device *ubi, int vol_id, int lnum,
const void *buf, int len, int dtype);
int ubi_eba_atomic_leb_change(struct ubi_device *ubi, struct ubi_volume *vol,
int lnum, const void *buf, int len, int dtype);
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);

7
drivers/mtd/ubi/upd.c
View File

@ -136,7 +136,7 @@ int ubi_start_update(struct ubi_device *ubi, int vol_id, long long bytes)
/* Before updating - wipe out the volume */
for (i = 0; i < vol->reserved_pebs; i++) {
err = ubi_eba_unmap_leb(ubi, vol_id, i);
err = ubi_eba_unmap_leb(ubi, vol, i);
if (err)
return err;
}
@ -209,8 +209,7 @@ static int write_leb(struct ubi_device *ubi, int vol_id, int lnum, void *buf,
if (len != l)
dbg_msg("skip last %d bytes (0xFF)", len - l);
err = ubi_eba_write_leb(ubi, vol_id, lnum, buf, 0, l,
UBI_UNKNOWN);
err = ubi_eba_write_leb(ubi, vol, lnum, buf, 0, l, UBI_UNKNOWN);
} else {
/*
* When writing static volume, and this is the last logical
@ -222,7 +221,7 @@ static int write_leb(struct ubi_device *ubi, int vol_id, int lnum, void *buf,
* contain zeros, not random trash.
*/
memset(buf + len, 0, vol->usable_leb_size - len);
err = ubi_eba_write_leb_st(ubi, vol_id, lnum, buf, len,
err = ubi_eba_write_leb_st(ubi, vol, lnum, buf, len,
UBI_UNKNOWN, used_ebs);
}

22
drivers/mtd/ubi/vmt.c
View File

@ -417,7 +417,7 @@ int ubi_remove_volume(struct ubi_volume_desc *desc)
return err;
for (i = 0; i < vol->reserved_pebs; i++) {
err = ubi_eba_unmap_leb(ubi, vol_id, i);
err = ubi_eba_unmap_leb(ubi, vol, i);
if (err)
return err;
}
@ -524,7 +524,7 @@ int ubi_resize_volume(struct ubi_volume_desc *desc, int reserved_pebs)
if (pebs < 0) {
for (i = 0; i < -pebs; i++) {
err = ubi_eba_unmap_leb(ubi, vol_id, reserved_pebs + i);
err = ubi_eba_unmap_leb(ubi, vol, reserved_pebs + i);
if (err)
goto out_acc;
}
@ -573,17 +573,16 @@ out_free:
/**
* ubi_add_volume - add volume.
* @ubi: UBI device description object
* @vol_id: volume ID
* @vol: volume description object
*
* This function adds an existin volume and initializes all its data
* structures. Returnes zero in case of success and a negative error code in
* case of failure.
*/
int ubi_add_volume(struct ubi_device *ubi, int vol_id)
int ubi_add_volume(struct ubi_device *ubi, struct ubi_volume *vol)
{
int err;
int err, vol_id = vol->vol_id;
dev_t dev;
struct ubi_volume *vol = ubi->volumes[vol_id];
dbg_msg("add volume %d", vol_id);
ubi_dbg_dump_vol_info(vol);
@ -634,22 +633,21 @@ out_cdev:
/**
* ubi_free_volume - free volume.
* @ubi: UBI device description object
* @vol_id: volume ID
* @vol: volume description object
*
* This function frees all resources for volume @vol_id but does not remove it.
* This function frees all resources for volume @vol but does not remove it.
* Used only when the UBI device is detached.
*/
void ubi_free_volume(struct ubi_device *ubi, int vol_id)
void ubi_free_volume(struct ubi_device *ubi, struct ubi_volume *vol)
{
int err;
struct ubi_volume *vol = ubi->volumes[vol_id];
dbg_msg("free volume %d", vol_id);
dbg_msg("free volume %d", vol->vol_id);
ubi_assert(vol);
vol->removed = 1;
err = ubi_destroy_gluebi(vol);
ubi->volumes[vol_id] = NULL;
ubi->volumes[vol->vol_id] = NULL;
cdev_del(&vol->cdev);
volume_sysfs_close(vol);
}

6
drivers/mtd/ubi/vtbl.c
View File

@ -86,8 +86,10 @@ int ubi_change_vtbl_record(struct ubi_device *ubi, int idx,
{
int i, err;
uint32_t crc;
struct ubi_volume *layout_vol;
ubi_assert(idx >= 0 && idx < ubi->vtbl_slots);
layout_vol = ubi->volumes[vol_id2idx(UBI_LAYOUT_VOL_ID)];
if (!vtbl_rec)
vtbl_rec = &empty_vtbl_record;
@ -99,12 +101,12 @@ int ubi_change_vtbl_record(struct ubi_device *ubi, int idx,
mutex_lock(&ubi->vtbl_mutex);
memcpy(&ubi->vtbl[idx], vtbl_rec, sizeof(struct ubi_vtbl_record));
for (i = 0; i < UBI_LAYOUT_VOLUME_EBS; i++) {
err = ubi_eba_unmap_leb(ubi, UBI_LAYOUT_VOL_ID, i);
err = ubi_eba_unmap_leb(ubi, layout_vol, i);
if (err) {
mutex_unlock(&ubi->vtbl_mutex);
return err;
}
err = ubi_eba_write_leb(ubi, UBI_LAYOUT_VOL_ID, i, ubi->vtbl, 0,
err = ubi_eba_write_leb(ubi, layout_vol, i, ubi->vtbl, 0,
ubi->vtbl_size, UBI_LONGTERM);
if (err) {
mutex_unlock(&ubi->vtbl_mutex);