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ubi: Introduce in_pq()

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This function works like in_wl_tree() but checks whether an ubi_wl_entry
is currently in the protection queue.
We need this function to query the current state of an ubi_wl_entry.

Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Richard Weinberger
2018-11-07 23:16:18 +01:00
parent a3b22b9f11
commit b32b78f892
1 changed files with 23 additions and 7 deletions
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30
drivers/mtd/ubi/wl.c
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@@ -277,6 +277,27 @@ static int in_wl_tree(struct ubi_wl_entry *e, struct rb_root *root)
return 0; return 0;
} }
/**
* in_pq - check if a wear-leveling entry is present in the protection queue.
* @ubi: UBI device description object
* @e: the wear-leveling entry to check
*
* This function returns non-zero if @e is in the protection queue and zero
* if it is not.
*/
static inline int in_pq(const struct ubi_device *ubi, struct ubi_wl_entry *e)
{
struct ubi_wl_entry *p;
int i;
for (i = 0; i < UBI_PROT_QUEUE_LEN; ++i)
list_for_each_entry(p, &ubi->pq[i], u.list)
if (p == e)
return 1;
return 0;
}
/** /**
* prot_queue_add - add physical eraseblock to the protection queue. * prot_queue_add - add physical eraseblock to the protection queue.
* @ubi: UBI device description object * @ubi: UBI device description object
@@ -1848,16 +1869,11 @@ static int self_check_in_wl_tree(const struct ubi_device *ubi,
static int self_check_in_pq(const struct ubi_device *ubi, static int self_check_in_pq(const struct ubi_device *ubi,
struct ubi_wl_entry *e) struct ubi_wl_entry *e)
{ {
struct ubi_wl_entry *p;
int i;
if (!ubi_dbg_chk_gen(ubi)) if (!ubi_dbg_chk_gen(ubi))
return 0; return 0;
for (i = 0; i < UBI_PROT_QUEUE_LEN; ++i) if (in_pq(ubi, e))
list_for_each_entry(p, &ubi->pq[i], u.list) return 0;
if (p == e)
return 0;
ubi_err(ubi, "self-check failed for PEB %d, EC %d, Protect queue", ubi_err(ubi, "self-check failed for PEB %d, EC %d, Protect queue",
e->pnum, e->ec); e->pnum, e->ec);