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-rw-r--r--drivers/mtd/ubi/attach.c46
-rw-r--r--drivers/mtd/ubi/ubi.h5
2 files changed, 35 insertions, 16 deletions
diff --git a/drivers/mtd/ubi/attach.c b/drivers/mtd/ubi/attach.c
index f59f748caf23..bd27cbbb4066 100644
--- a/drivers/mtd/ubi/attach.c
+++ b/drivers/mtd/ubi/attach.c
@@ -99,12 +99,16 @@ static struct ubi_vid_hdr *vidh;
* add_to_list - add physical eraseblock to a list.
* @ai: attaching information
* @pnum: physical eraseblock number to add
+ * @vol_id: the last used volume id for the PEB
+ * @lnum: the last used LEB number for the PEB
* @ec: erase counter of the physical eraseblock
* @to_head: if not zero, add to the head of the list
* @list: the list to add to
*
* This function allocates a 'struct ubi_ainf_peb' object for physical
* eraseblock @pnum and adds it to the "free", "erase", or "alien" lists.
+ * It stores the @lnum and @vol_id alongside, which can both be
+ * %UBI_UNKNOWN if they are not available, not readable, or not assigned.
* If @to_head is not zero, PEB will be added to the head of the list, which
* basically means it will be processed first later. E.g., we add corrupted
* PEBs (corrupted due to power cuts) to the head of the erase list to make
@@ -112,8 +116,8 @@ static struct ubi_vid_hdr *vidh;
* returns zero in case of success and a negative error code in case of
* failure.
*/
-static int add_to_list(struct ubi_attach_info *ai, int pnum, int ec,
- int to_head, struct list_head *list)
+static int add_to_list(struct ubi_attach_info *ai, int pnum, int vol_id,
+ int lnum, int ec, int to_head, struct list_head *list)
{
struct ubi_ainf_peb *aeb;
@@ -132,6 +136,8 @@ static int add_to_list(struct ubi_attach_info *ai, int pnum, int ec,
return -ENOMEM;
aeb->pnum = pnum;
+ aeb->vol_id = vol_id;
+ aeb->lnum = lnum;
aeb->ec = ec;
if (to_head)
list_add(&aeb->u.list, list);
@@ -530,13 +536,16 @@ int ubi_add_to_av(struct ubi_device *ubi, struct ubi_attach_info *ai, int pnum,
if (err)
return err;
- err = add_to_list(ai, aeb->pnum, aeb->ec, cmp_res & 4,
+ err = add_to_list(ai, aeb->pnum, aeb->vol_id,
+ aeb->lnum, aeb->ec, cmp_res & 4,
&ai->erase);
if (err)
return err;
aeb->ec = ec;
aeb->pnum = pnum;
+ aeb->vol_id = vol_id;
+ aeb->lnum = lnum;
aeb->scrub = ((cmp_res & 2) || bitflips);
aeb->copy_flag = vid_hdr->copy_flag;
aeb->sqnum = sqnum;
@@ -551,8 +560,8 @@ int ubi_add_to_av(struct ubi_device *ubi, struct ubi_attach_info *ai, int pnum,
* This logical eraseblock is older than the one found
* previously.
*/
- return add_to_list(ai, pnum, ec, cmp_res & 4,
- &ai->erase);
+ return add_to_list(ai, pnum, vol_id, lnum, ec,
+ cmp_res & 4, &ai->erase);
}
}
@@ -571,6 +580,7 @@ int ubi_add_to_av(struct ubi_device *ubi, struct ubi_attach_info *ai, int pnum,
aeb->ec = ec;
aeb->pnum = pnum;
+ aeb->vol_id = vol_id;
aeb->lnum = lnum;
aeb->scrub = bitflips;
aeb->copy_flag = vid_hdr->copy_flag;
@@ -834,12 +844,12 @@ static int scan_peb(struct ubi_device *ubi, struct ubi_attach_info *ai,
break;
case UBI_IO_FF:
ai->empty_peb_count += 1;
- return add_to_list(ai, pnum, UBI_UNKNOWN, 0,
- &ai->erase);
+ return add_to_list(ai, pnum, UBI_UNKNOWN, UBI_UNKNOWN,
+ UBI_UNKNOWN, 0, &ai->erase);
case UBI_IO_FF_BITFLIPS:
ai->empty_peb_count += 1;
- return add_to_list(ai, pnum, UBI_UNKNOWN, 1,
- &ai->erase);
+ return add_to_list(ai, pnum, UBI_UNKNOWN, UBI_UNKNOWN,
+ UBI_UNKNOWN, 1, &ai->erase);
case UBI_IO_BAD_HDR_EBADMSG:
case UBI_IO_BAD_HDR:
/*
@@ -950,7 +960,8 @@ static int scan_peb(struct ubi_device *ubi, struct ubi_attach_info *ai,
return err;
else if (!err)
/* This corruption is caused by a power cut */
- err = add_to_list(ai, pnum, ec, 1, &ai->erase);
+ err = add_to_list(ai, pnum, UBI_UNKNOWN,
+ UBI_UNKNOWN, ec, 1, &ai->erase);
else
/* This is an unexpected corruption */
err = add_corrupted(ai, pnum, ec);
@@ -958,15 +969,18 @@ static int scan_peb(struct ubi_device *ubi, struct ubi_attach_info *ai,
return err;
goto adjust_mean_ec;
case UBI_IO_FF_BITFLIPS:
- err = add_to_list(ai, pnum, ec, 1, &ai->erase);
+ err = add_to_list(ai, pnum, UBI_UNKNOWN, UBI_UNKNOWN,
+ ec, 1, &ai->erase);
if (err)
return err;
goto adjust_mean_ec;
case UBI_IO_FF:
if (ec_err)
- err = add_to_list(ai, pnum, ec, 1, &ai->erase);
+ err = add_to_list(ai, pnum, UBI_UNKNOWN,
+ UBI_UNKNOWN, ec, 1, &ai->erase);
else
- err = add_to_list(ai, pnum, ec, 0, &ai->free);
+ err = add_to_list(ai, pnum, UBI_UNKNOWN,
+ UBI_UNKNOWN, ec, 0, &ai->free);
if (err)
return err;
goto adjust_mean_ec;
@@ -985,7 +999,8 @@ static int scan_peb(struct ubi_device *ubi, struct ubi_attach_info *ai,
case UBI_COMPAT_DELETE:
ubi_msg("\"delete\" compatible internal volume %d:%d"
" found, will remove it", vol_id, lnum);
- err = add_to_list(ai, pnum, ec, 1, &ai->erase);
+ err = add_to_list(ai, pnum, vol_id, lnum,
+ ec, 1, &ai->erase);
if (err)
return err;
return 0;
@@ -1000,7 +1015,8 @@ static int scan_peb(struct ubi_device *ubi, struct ubi_attach_info *ai,
case UBI_COMPAT_PRESERVE:
ubi_msg("\"preserve\" compatible internal volume %d:%d"
" found", vol_id, lnum);
- err = add_to_list(ai, pnum, ec, 0, &ai->alien);
+ err = add_to_list(ai, pnum, vol_id, lnum,
+ ec, 0, &ai->alien);
if (err)
return err;
return 0;
diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h
index 52756327827a..b4b3913f1df4 100644
--- a/drivers/mtd/ubi/ubi.h
+++ b/drivers/mtd/ubi/ubi.h
@@ -483,6 +483,7 @@ struct ubi_device {
* struct ubi_ainf_peb - attach information about a physical eraseblock.
* @ec: erase counter (%UBI_UNKNOWN if it is unknown)
* @pnum: physical eraseblock number
+ * @vol_id: ID of the volume this LEB belongs to
* @lnum: logical eraseblock number
* @scrub: if this physical eraseblock needs scrubbing
* @copy_flag: this LEB is a copy (@copy_flag is set in VID header of this LEB)
@@ -492,11 +493,13 @@ struct ubi_device {
* @u.list: link in one of the eraseblock lists
*
* One object of this type is allocated for each physical eraseblock when
- * attaching an MTD device.
+ * attaching an MTD device. Note, if this PEB does not belong to any LEB /
+ * volume, the @vol_id and @lnum fields are initialized to %UBI_UNKNOWN.
*/
struct ubi_ainf_peb {
int ec;
int pnum;
+ int vol_id;
int lnum;
unsigned int scrub:1;
unsigned int copy_flag:1;
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-27 04:19:40 +0000