1 files changed, 7 insertions, 59 deletions

diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c
index 28c8151a07..2a728c31e6 100644
--- a/drivers/mtd/ubi/fastmap.c
+++ b/drivers/mtd/ubi/fastmap.c
@@ -20,7 +20,7 @@ static inline unsigned long *init_seen(struct ubi_device *ubi)
 	if (!ubi_dbg_chk_fastmap(ubi))
 		return NULL;
 
-	ret = bitmap_zalloc(ubi->peb_count, GFP_KERNEL);
+	ret = bitmap_zalloc(ubi->peb_count, GFP_NOFS);
 	if (!ret)
 		return ERR_PTR(-ENOMEM);
 
@@ -105,7 +105,7 @@ static struct ubi_vid_io_buf *new_fm_vbuf(struct ubi_device *ubi, int vol_id)
 	struct ubi_vid_io_buf *new;
 	struct ubi_vid_hdr *vh;
 
-	new = ubi_alloc_vid_buf(ubi, GFP_KERNEL);
+	new = ubi_alloc_vid_buf(ubi, GFP_NOFS);
 	if (!new)
 		goto out;
 
@@ -1390,53 +1390,6 @@ out:
 }
 
 /**
- * erase_block - Manually erase a PEB.
- * @ubi: UBI device object
- * @pnum: PEB to be erased
- *
- * Returns the new EC value on success, < 0 indicates an internal error.
- */
-static int erase_block(struct ubi_device *ubi, int pnum)
-{
-	int ret;
-	struct ubi_ec_hdr *ec_hdr;
-	long long ec;
-
-	ec_hdr = kzalloc(ubi->ec_hdr_alsize, GFP_KERNEL);
-	if (!ec_hdr)
-		return -ENOMEM;
-
-	ret = ubi_io_read_ec_hdr(ubi, pnum, ec_hdr, 0);
-	if (ret < 0)
-		goto out;
-	else if (ret && ret != UBI_IO_BITFLIPS) {
-		ret = -EINVAL;
-		goto out;
-	}
-
-	ret = ubi_io_sync_erase(ubi, pnum, 0);
-	if (ret < 0)
-		goto out;
-
-	ec = be64_to_cpu(ec_hdr->ec);
-	ec += ret;
-	if (ec > UBI_MAX_ERASECOUNTER) {
-		ret = -EINVAL;
-		goto out;
-	}
-
-	ec_hdr->ec = cpu_to_be64(ec);
-	ret = ubi_io_write_ec_hdr(ubi, pnum, ec_hdr);
-	if (ret < 0)
-		goto out;
-
-	ret = ec;
-out:
-	kfree(ec_hdr);
-	return ret;
-}
-
-/**
  * invalidate_fastmap - destroys a fastmap.
  * @ubi: UBI device object
  *
@@ -1462,7 +1415,7 @@ static int invalidate_fastmap(struct ubi_device *ubi)
 	ubi->fm = NULL;
 
 	ret = -ENOMEM;
-	fm = kzalloc(sizeof(*fm), GFP_KERNEL);
+	fm = kzalloc(sizeof(*fm), GFP_NOFS);
 	if (!fm)
 		goto out;
 
@@ -1538,11 +1491,7 @@ int ubi_update_fastmap(struct ubi_device *ubi)
 	struct ubi_fastmap_layout *new_fm, *old_fm;
 	struct ubi_wl_entry *tmp_e;
 
-	down_write(&ubi->fm_protect);
-	down_write(&ubi->work_sem);
-	down_write(&ubi->fm_eba_sem);
-
-	ubi_refill_pools(ubi);
+	ubi_refill_pools_and_lock(ubi);
 
 	if (ubi->ro_mode || ubi->fm_disabled) {
 		up_write(&ubi->fm_eba_sem);
@@ -1551,7 +1500,7 @@ int ubi_update_fastmap(struct ubi_device *ubi)
 		return 0;
 	}
 
-	new_fm = kzalloc(sizeof(*new_fm), GFP_KERNEL);
+	new_fm = kzalloc(sizeof(*new_fm), GFP_NOFS);
 	if (!new_fm) {
 		up_write(&ubi->fm_eba_sem);
 		up_write(&ubi->work_sem);
@@ -1576,7 +1525,7 @@ int ubi_update_fastmap(struct ubi_device *ubi)
 
 		if (!tmp_e) {
 			if (old_fm && old_fm->e[i]) {
-				ret = erase_block(ubi, old_fm->e[i]->pnum);
+				ret = ubi_sync_erase(ubi, old_fm->e[i], 0);
 				if (ret < 0) {
 					ubi_err(ubi, "could not erase old fastmap PEB");
 
@@ -1628,7 +1577,7 @@ int ubi_update_fastmap(struct ubi_device *ubi)
 	if (old_fm) {
 		/* no fresh anchor PEB was found, reuse the old one */
 		if (!tmp_e) {
-			ret = erase_block(ubi, old_fm->e[0]->pnum);
+			ret = ubi_sync_erase(ubi, old_fm->e[0], 0);
 			if (ret < 0) {
 				ubi_err(ubi, "could not erase old anchor PEB");
 
@@ -1640,7 +1589,6 @@ int ubi_update_fastmap(struct ubi_device *ubi)
 				goto err;
 			}
 			new_fm->e[0] = old_fm->e[0];
-			new_fm->e[0]->ec = ret;
 			old_fm->e[0] = NULL;
 		} else {
 			/* we've got a new anchor PEB, return the old one */