From: Richard Weinberger <[email protected]> get_peb_for_wl() removes the PEB from the free list. If the WL subsystem detects that no wear leveling is needed it cancels the operation and drops the gained PEB. In this case we have to put the PEB back into the free list.
This issue was introduced with commit ed4b7021c (UBI: remove PEB from free tree in get_peb_for_wl()). Cc: <[email protected]> # 3.7.x Signed-off-by: Richard Weinberger <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> --- drivers/mtd/ubi/wl.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c index d0d3c97..5a79e98 100644 --- a/drivers/mtd/ubi/wl.c +++ b/drivers/mtd/ubi/wl.c @@ -1020,6 +1020,9 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk, if (!(e2->ec - e1->ec >= UBI_WL_THRESHOLD)) { dbg_wl("no WL needed: min used EC %d, max free EC %d", e1->ec, e2->ec); + + /* Give the unused PEB back */ + wl_tree_add(e2, &ubi->free); goto out_cancel; } self_check_in_wl_tree(ubi, e1, &ubi->used); -- 1.8.5.2 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
