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path: root/kernel/drivers/mtd/ubi/wl.c
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Diffstat (limited to 'kernel/drivers/mtd/ubi/wl.c')
-rw-r--r--kernel/drivers/mtd/ubi/wl.c56
1 files changed, 31 insertions, 25 deletions
diff --git a/kernel/drivers/mtd/ubi/wl.c b/kernel/drivers/mtd/ubi/wl.c
index 16214d3d5..56065632a 100644
--- a/kernel/drivers/mtd/ubi/wl.c
+++ b/kernel/drivers/mtd/ubi/wl.c
@@ -603,6 +603,7 @@ static int schedule_erase(struct ubi_device *ubi, struct ubi_wl_entry *e,
return 0;
}
+static int __erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk);
/**
* do_sync_erase - run the erase worker synchronously.
* @ubi: UBI device description object
@@ -615,20 +616,16 @@ static int schedule_erase(struct ubi_device *ubi, struct ubi_wl_entry *e,
static int do_sync_erase(struct ubi_device *ubi, struct ubi_wl_entry *e,
int vol_id, int lnum, int torture)
{
- struct ubi_work *wl_wrk;
+ struct ubi_work wl_wrk;
dbg_wl("sync erase of PEB %i", e->pnum);
- wl_wrk = kmalloc(sizeof(struct ubi_work), GFP_NOFS);
- if (!wl_wrk)
- return -ENOMEM;
-
- wl_wrk->e = e;
- wl_wrk->vol_id = vol_id;
- wl_wrk->lnum = lnum;
- wl_wrk->torture = torture;
+ wl_wrk.e = e;
+ wl_wrk.vol_id = vol_id;
+ wl_wrk.lnum = lnum;
+ wl_wrk.torture = torture;
- return erase_worker(ubi, wl_wrk, 0);
+ return __erase_worker(ubi, &wl_wrk);
}
/**
@@ -1014,7 +1011,7 @@ out_unlock:
}
/**
- * erase_worker - physical eraseblock erase worker function.
+ * __erase_worker - physical eraseblock erase worker function.
* @ubi: UBI device description object
* @wl_wrk: the work object
* @shutdown: non-zero if the worker has to free memory and exit
@@ -1025,8 +1022,7 @@ out_unlock:
* needed. Returns zero in case of success and a negative error code in case of
* failure.
*/
-static int erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk,
- int shutdown)
+static int __erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk)
{
struct ubi_wl_entry *e = wl_wrk->e;
int pnum = e->pnum;
@@ -1034,21 +1030,11 @@ static int erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk,
int lnum = wl_wrk->lnum;
int err, available_consumed = 0;
- if (shutdown) {
- dbg_wl("cancel erasure of PEB %d EC %d", pnum, e->ec);
- kfree(wl_wrk);
- wl_entry_destroy(ubi, e);
- return 0;
- }
-
dbg_wl("erase PEB %d EC %d LEB %d:%d",
pnum, e->ec, wl_wrk->vol_id, wl_wrk->lnum);
err = sync_erase(ubi, e, wl_wrk->torture);
if (!err) {
- /* Fine, we've erased it successfully */
- kfree(wl_wrk);
-
spin_lock(&ubi->wl_lock);
wl_tree_add(e, &ubi->free);
ubi->free_count++;
@@ -1066,7 +1052,6 @@ static int erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk,
}
ubi_err(ubi, "failed to erase PEB %d, error %d", pnum, err);
- kfree(wl_wrk);
if (err == -EINTR || err == -ENOMEM || err == -EAGAIN ||
err == -EBUSY) {
@@ -1075,6 +1060,7 @@ static int erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk,
/* Re-schedule the LEB for erasure */
err1 = schedule_erase(ubi, e, vol_id, lnum, 0);
if (err1) {
+ wl_entry_destroy(ubi, e);
err = err1;
goto out_ro;
}
@@ -1150,6 +1136,25 @@ out_ro:
return err;
}
+static int erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk,
+ int shutdown)
+{
+ int ret;
+
+ if (shutdown) {
+ struct ubi_wl_entry *e = wl_wrk->e;
+
+ dbg_wl("cancel erasure of PEB %d EC %d", e->pnum, e->ec);
+ kfree(wl_wrk);
+ wl_entry_destroy(ubi, e);
+ return 0;
+ }
+
+ ret = __erase_worker(ubi, wl_wrk);
+ kfree(wl_wrk);
+ return ret;
+}
+
/**
* ubi_wl_put_peb - return a PEB to the wear-leveling sub-system.
* @ubi: UBI device description object
@@ -1581,7 +1586,7 @@ int ubi_wl_init(struct ubi_device *ubi, struct ubi_attach_info *ai)
dbg_wl("found %i PEBs", found_pebs);
if (ubi->fm) {
- ubi_assert(ubi->good_peb_count == \
+ ubi_assert(ubi->good_peb_count ==
found_pebs + ubi->fm->used_blocks);
for (i = 0; i < ubi->fm->used_blocks; i++) {
@@ -1601,6 +1606,7 @@ int ubi_wl_init(struct ubi_device *ubi, struct ubi_attach_info *ai)
if (ubi->corr_peb_count)
ubi_err(ubi, "%d PEBs are corrupted and not used",
ubi->corr_peb_count);
+ err = -ENOSPC;
goto out_free;
}
ubi->avail_pebs -= reserved_pebs;