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Message-Id: <1340036345-96726-4-git-send-email-richard@nod.at>
Date: Mon, 18 Jun 2012 18:18:46 +0200
From: Richard Weinberger <richard@....at>
To: linux-mtd@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org, adrian.hunter@...el.com,
Heinz.Egger@...utronix.de, thomas.wucher@...utronix.de,
shmulik.ladkani@...il.com, tglx@...utronix.de,
tim.bird@...sony.com, Marius.Mazarel@...l.ro,
artem.bityutskiy@...ux.intel.com,
Richard Weinberger <richard@....at>
Subject: [PATCH 03/22] UBI: Fastmap: Keep fastmap after attaching
Signed-off-by: Richard Weinberger <richard@....at>
---
drivers/mtd/ubi/attach.c | 14 +---------
drivers/mtd/ubi/fastmap.c | 67 ++++++++++++++++++++++-----------------------
drivers/mtd/ubi/ubi.h | 2 -
3 files changed, 34 insertions(+), 49 deletions(-)
diff --git a/drivers/mtd/ubi/attach.c b/drivers/mtd/ubi/attach.c
index 1573d94..9ae66e4 100644
--- a/drivers/mtd/ubi/attach.c
+++ b/drivers/mtd/ubi/attach.c
@@ -1262,7 +1262,7 @@ int ubi_attach(struct ubi_device *ubi)
if (err)
goto out_wl;
- if (ai->fm) {
+ if (ubi->fm) {
struct ubi_attach_info *scan_ai;
scan_ai = kzalloc(sizeof(struct ubi_attach_info), GFP_KERNEL);
if (!scan_ai)
@@ -1385,18 +1385,6 @@ void ubi_destroy_ai(struct ubi_device *ubi, struct ubi_attach_info *ai)
if (ai->aeb_slab_cache)
kmem_cache_destroy(ai->aeb_slab_cache);
- /* Return all PEBs back to the WL sub-system */
- if (ai->fm) {
- int i, torture;
-
- for (i = 0; i < ai->fm->used_blocks; i++) {
- torture = ai->fm->to_be_tortured[i];
- ubi_wl_put_fm_peb(ubi, ai->fm->e[i], torture);
- }
-
- kfree(ai->fm);
- }
-
kfree(ai);
}
diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c
index 5bbf1e3..9ed4723 100644
--- a/drivers/mtd/ubi/fastmap.c
+++ b/drivers/mtd/ubi/fastmap.c
@@ -774,6 +774,7 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai)
struct ubi_fm_sb *fmsb;
struct ubi_vid_hdr *vh;
struct ubi_ec_hdr *ech;
+ struct ubi_fastmap_layout *fm;
int i, used_blocks, pnum, sb_pnum = 0, ret = 0;
void *fm_raw = NULL;
size_t fm_size;
@@ -792,8 +793,8 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai)
goto out;
}
- ai->fm = kzalloc(sizeof(*ai->fm), GFP_KERNEL);
- if (!ai->fm) {
+ fm = kzalloc(sizeof(*fm), GFP_KERNEL);
+ if (!fm) {
ret = -ENOMEM;
kfree(fmsb);
goto free_raw;
@@ -802,10 +803,10 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai)
ret = ubi_io_read(ubi, fmsb, sb_pnum, ubi->leb_start, sizeof(*fmsb));
if (ret && ret != UBI_IO_BITFLIPS) {
kfree(fmsb);
- kfree(ai->fm);
+ kfree(fm);
goto out;
} else if (ret == UBI_IO_BITFLIPS)
- ai->fm->to_be_tortured[0] = 1;
+ fm->to_be_tortured[0] = 1;
if (be32_to_cpu(fmsb->magic) != UBI_FM_SB_MAGIC) {
/* TODO: not urgent, but examine all the error messages and
@@ -818,7 +819,7 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai)
ubi_err("super block magic does not match");
ret = UBI_BAD_FASTMAP;
kfree(fmsb);
- kfree(ai->fm);
+ kfree(fm);
goto out;
}
@@ -826,7 +827,7 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai)
ubi_err("unknown fastmap format version!");
ret = UBI_BAD_FASTMAP;
kfree(fmsb);
- kfree(ai->fm);
+ kfree(fm);
goto out;
}
@@ -835,7 +836,7 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai)
ubi_err("number of fastmap blocks is invalid");
ret = UBI_BAD_FASTMAP;
kfree(fmsb);
- kfree(ai->fm);
+ kfree(fm);
goto out;
}
@@ -845,7 +846,7 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai)
if (!fm_raw) {
ret = -ENOMEM;
kfree(fmsb);
- kfree(ai->fm);
+ kfree(fm);
goto out;
}
@@ -853,7 +854,7 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai)
if (!ech) {
ret = -ENOMEM;
kfree(fmsb);
- kfree(ai->fm);
+ kfree(fm);
goto free_raw;
}
@@ -861,7 +862,7 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai)
if (!vh) {
ret = -ENOMEM;
kfree(fmsb);
- kfree(ai->fm);
+ kfree(fm);
kfree(ech);
goto free_raw;
}
@@ -871,7 +872,7 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai)
if (ubi_io_is_bad(ubi, pnum)) {
ret = UBI_BAD_FASTMAP;
- kfree(ai->fm);
+ kfree(fm);
kfree(fmsb);
goto free_hdr;
}
@@ -883,10 +884,10 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai)
if (ret > 0)
ret = UBI_BAD_FASTMAP;
kfree(fmsb);
- kfree(ai->fm);
+ kfree(fm);
goto free_hdr;
} else if (ret == UBI_IO_BITFLIPS)
- ai->fm->to_be_tortured[i] = 1;
+ fm->to_be_tortured[i] = 1;
if (!ubi->image_seq)
ubi->image_seq = be32_to_cpu(ech->image_seq);
@@ -894,7 +895,7 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai)
if (be32_to_cpu(ech->image_seq) != ubi->image_seq) {
ret = UBI_BAD_FASTMAP;
kfree(fmsb);
- kfree(ai->fm);
+ kfree(fm);
goto free_hdr;
}
@@ -903,7 +904,7 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai)
ubi_err("unable to read fastmap block# %i (PEB: %i)",
i, pnum);
kfree(fmsb);
- kfree(ai->fm);
+ kfree(fm);
goto free_hdr;
}
@@ -911,7 +912,7 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai)
if (be32_to_cpu(vh->vol_id) != UBI_FM_SB_VOLUME_ID) {
ret = UBI_BAD_FASTMAP;
kfree(fmsb);
- kfree(ai->fm);
+ kfree(fm);
goto free_hdr;
}
} else {
@@ -931,7 +932,7 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai)
ubi_err("unable to read fastmap block# %i (PEB: %i)",
i, pnum);
kfree(fmsb);
- kfree(ai->fm);
+ kfree(fm);
goto free_hdr;
}
}
@@ -945,7 +946,7 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai)
if (crc != tmp_crc) {
ubi_err("fastmap data CRC is invalid");
ret = UBI_BAD_FASTMAP;
- kfree(ai->fm);
+ kfree(fm);
goto free_hdr;
}
@@ -955,12 +956,12 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai)
if (ret) {
if (ret > 0)
ret = UBI_BAD_FASTMAP;
- kfree(ai->fm);
+ kfree(fm);
goto free_hdr;
}
- ai->fm->size = fm_size;
- ai->fm->used_blocks = used_blocks;
+ fm->size = fm_size;
+ fm->used_blocks = used_blocks;
for (i = 0; i < used_blocks; i++) {
struct ubi_wl_entry *e;
@@ -968,19 +969,21 @@ int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai)
e = kmem_cache_alloc(ubi_wl_entry_slab, GFP_KERNEL);
if (!e) {
while (i--)
- kfree(ai->fm->e[i]);
+ kfree(fm->e[i]);
- kfree(ai->fm);
- ai->fm = NULL;
+ kfree(fm);
+ fm = NULL;
ret = -ENOMEM;
goto free_hdr;
}
e->pnum = be32_to_cpu(fmsb->block_loc[i]);
e->ec = be32_to_cpu(fmsb->block_ec[i]);
- ai->fm->e[i] = e;
+ fm->e[i] = e;
}
+ ubi->fm = fm;
+
free_hdr:
ubi_free_vid_hdr(ubi, vh);
kfree(ech);
@@ -1294,7 +1297,8 @@ int ubi_update_fastmap(struct ubi_device *ubi)
new_fm->e[0]->ec = old_fm->e[0]->ec;
} else {
/* we've got a new early PEB, return the old one */
- ubi_wl_put_fm_peb(ubi, old_fm->e[0], 0);
+ ubi_wl_put_fm_peb(ubi, old_fm->e[0],
+ old_fm->to_be_tortured[0]);
new_fm->e[0]->pnum = tmp_e->pnum;
new_fm->e[0]->ec = tmp_e->ec;
@@ -1302,7 +1306,8 @@ int ubi_update_fastmap(struct ubi_device *ubi)
/* return all other fastmap block to the wl system */
for (i = 1; i < old_fm->used_blocks; i++)
- ubi_wl_put_fm_peb(ubi, old_fm->e[i], 0);
+ ubi_wl_put_fm_peb(ubi, old_fm->e[i],
+ old_fm->to_be_tortured[i]);
} else {
if (!tmp_e) {
ubi_err("could not find an early PEB");
@@ -1346,13 +1351,7 @@ int ubi_update_fastmap(struct ubi_device *ubi)
new_fm->e[i]->ec = tmp_e->ec;
}
- if (old_fm) {
- for (i = 0; i < old_fm->used_blocks; i++)
- kfree(old_fm->e[i]);
-
- kfree(old_fm);
- }
-
+ kfree(old_fm);
/* Ensure that the PEBs of the old fastmap got erased and added to the
* free list before we write the fastmap. Otherwise fastmp does not
* see these PEBs and we leak them.
diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h
index f4bd3c9..dcbc420 100644
--- a/drivers/mtd/ubi/ubi.h
+++ b/drivers/mtd/ubi/ubi.h
@@ -625,7 +625,6 @@ struct ubi_ainf_volume {
* @ec_sum: a temporary variable used when calculating @mean_ec
* @ec_count: a temporary variable used when calculating @mean_ec
* @aeb_slab_cache: slab cache for &struct ubi_ainf_peb objects
- * @fm: the fastmap used for attaching
*
* This data structure contains the result of attaching an MTD device and may
* be used by other UBI sub-systems to build final UBI data structures, further
@@ -652,7 +651,6 @@ struct ubi_attach_info {
uint64_t ec_sum;
int ec_count;
struct kmem_cache *aeb_slab_cache;
- struct ubi_fastmap_layout *fm;
};
#include "debug.h"
--
1.7.6.5
--
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