[PATCH v2 22/62] UBI: Fastmap: Don't allocate new ubi_wl_entry objects

[Teresa Remmet]

From: Richard Weinberger <richard at nod.at>

There is no need to allocate new ones every time, we can reuse
the existing ones.
This makes the code cleaner and more easy to follow.

Signed-off-by: Richard Weinberger <richard at nod.at>
Reviewed-by: Tanya Brokhman <tlinder at codeaurora.org>
Reviewed-by: Guido Martínez <guido at vanguardiasur.com.ar>

Conflicts:
	drivers/mtd/ubi/fastmap.c

Fixed minor conflict.

Signed-off-by: Teresa Remmet <t.remmet at phytec.de>
---
 drivers/mtd/ubi/fastmap.c | 30 +++++-------------------------
 drivers/mtd/ubi/wl.c      |  3 ---
 2 files changed, 5 insertions(+), 28 deletions(-)

diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c
index bd3a307..2acd3dd 100644
--- a/drivers/mtd/ubi/fastmap.c
+++ b/drivers/mtd/ubi/fastmap.c
@@ -1433,18 +1433,6 @@ int ubi_update_fastmap(struct ubi_device *ubi)
 		return -ENOMEM;
 
 	new_fm->used_blocks = ubi->fm_size / ubi->leb_size;
-
-	for (i = 0; i < new_fm->used_blocks; i++) {
-		new_fm->e[i] = kzalloc(sizeof(struct ubi_ainf_peb), GFP_KERNEL);
-		if (!new_fm->e[i]) {
-			while (i--)
-				kfree(new_fm->e[i]);
-
-			kfree(new_fm);
-			return -ENOMEM;
-		}
-	}
-
 	old_fm = ubi->fm;
 	ubi->fm = NULL;
 
@@ -1478,12 +1466,9 @@ int ubi_update_fastmap(struct ubi_device *ubi)
 				ubi_err(ubi, "could not erase old fastmap PEB");
 				goto err;
 			}
-
-			new_fm->e[i]->pnum = old_fm->e[i]->pnum;
-			new_fm->e[i]->ec = old_fm->e[i]->ec;
+			new_fm->e[i] = old_fm->e[i];
 		} else {
-			new_fm->e[i]->pnum = tmp_e->pnum;
-			new_fm->e[i]->ec = tmp_e->ec;
+			new_fm->e[i] = tmp_e;
 
 			if (old_fm)
 				ubi_wl_put_fm_peb(ubi, old_fm->e[i], i,
@@ -1506,16 +1491,13 @@ int ubi_update_fastmap(struct ubi_device *ubi)
 							  i, 0);
 				goto err;
 			}
-
-			new_fm->e[0]->pnum = old_fm->e[0]->pnum;
+			new_fm->e[0] = old_fm->e[0];
 			new_fm->e[0]->ec = ret;
 		} else {
 			/* we've got a new anchor PEB, return the old one */
 			ubi_wl_put_fm_peb(ubi, old_fm->e[0], 0,
 					  old_fm->to_be_tortured[0]);
-
-			new_fm->e[0]->pnum = tmp_e->pnum;
-			new_fm->e[0]->ec = tmp_e->ec;
+			new_fm->e[0] = tmp_e;
 		}
 	} else {
 		if (!tmp_e) {
@@ -1528,9 +1510,7 @@ int ubi_update_fastmap(struct ubi_device *ubi)
 			ret = -ENOSPC;
 			goto err;
 		}
-
-		new_fm->e[0]->pnum = tmp_e->pnum;
-		new_fm->e[0]->ec = tmp_e->ec;
+		new_fm->e[0] = tmp_e;
 	}
 
 	ret = ubi_write_fastmap(ubi, new_fm);
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 5d89323..fd384c6 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -947,9 +947,6 @@ int ubi_wl_put_fm_peb(struct ubi_device *ubi, struct ubi_wl_entry *fm_e,
 		e = fm_e;
 		ubi_assert(e->ec >= 0);
 		ubi->lookuptbl[pnum] = e;
-	} else {
-		e->ec = fm_e->ec;
-		kfree(fm_e);
 	}
 
 	vol_id = lnum ? UBI_FM_DATA_VOLUME_ID : UBI_FM_SB_VOLUME_ID;
-- 
1.9.1