Commit 4c609922 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'upstream-4.9-rc1' of git://git.infradead.org/linux-ubifs 

Pull UBI/UBIFS updates from Richard Weinberger:
 "This pull request contains:

   - Fixes for both UBI and UBIFS
   - overlayfs support (O_TMPFILE, RENAME_WHITEOUT/EXCHANGE)
   - Code refactoring for the upcoming MLC support"

[ Ugh, we just got rid of the "rename2()" naming for the extended rename
  functionality. And this re-introduces it in ubifs with the cross-
  renaming and whiteout support.

  But rather than do any re-organizations in the merge itself, the
  naming can be cleaned up later ]

* tag 'upstream-4.9-rc1' of git://git.infradead.org/linux-ubifs: (27 commits)
  UBIFS: improve function-level documentation
  ubifs: fix host xattr_len when changing xattr
  ubifs: Use move variable in ubifs_rename()
  ubifs: Implement RENAME_EXCHANGE
  ubifs: Implement RENAME_WHITEOUT
  ubifs: Implement O_TMPFILE
  ubi: Fix Fastmap's update_vol()
  ubi: Fix races around ubi_refill_pools()
  ubi: Deal with interrupted erasures in WL
  UBI: introduce the VID buffer concept
  UBI: hide EBA internals
  UBI: provide an helper to query LEB information
  UBI: provide an helper to check whether a LEB is mapped or not
  UBI: add an helper to check lnum validity
  UBI: simplify LEB write and atomic LEB change code
  UBI: simplify recover_peb() code
  UBI: move the global ech and vidh variables into struct ubi_attach_info
  UBI: provide helpers to allocate and free aeb elements
  UBI: fastmap: use ubi_io_{read, write}_data() instead of ubi_io_{read, write}()
  UBI: fastmap: use ubi_rb_for_each_entry() in unmap_peb()
  ...
parents 1689c73a ec037dfc

drivers/mtd/ubi/attach.c

+201 −103
Original line number Diff line number Diff line
@@ -91,9 +91,132 @@ 


static int self_check_ai(struct ubi_device *ubi, struct ubi_attach_info *ai);



/* Temporary variables used during scanning */

static struct ubi_ec_hdr *ech;

static struct ubi_vid_hdr *vidh;

#define AV_FIND		BIT(0)

#define AV_ADD		BIT(1)

#define AV_FIND_OR_ADD	(AV_FIND | AV_ADD)



/**

 * find_or_add_av - internal function to find a volume, add a volume or do

 *		    both (find and add if missing).

 * @ai: attaching information

 * @vol_id: the requested volume ID

 * @flags: a combination of the %AV_FIND and %AV_ADD flags describing the

 *	   expected operation. If only %AV_ADD is set, -EEXIST is returned

 *	   if the volume already exists. If only %AV_FIND is set, NULL is

 *	   returned if the volume does not exist. And if both flags are

 *	   set, the helper first tries to find an existing volume, and if

 *	   it does not exist it creates a new one.

 * @created: in value used to inform the caller whether it"s a newly created

 *	     volume or not.

 *

 * This function returns a pointer to a volume description or an ERR_PTR if

 * the operation failed. It can also return NULL if only %AV_FIND is set and

 * the volume does not exist.

 */

static struct ubi_ainf_volume *find_or_add_av(struct ubi_attach_info *ai,

					      int vol_id, unsigned int flags,

					      bool *created)

{

	struct ubi_ainf_volume *av;

	struct rb_node **p = &ai->volumes.rb_node, *parent = NULL;



	/* Walk the volume RB-tree to look if this volume is already present */

	while (*p) {

		parent = *p;

		av = rb_entry(parent, struct ubi_ainf_volume, rb);



		if (vol_id == av->vol_id) {

			*created = false;



			if (!(flags & AV_FIND))

				return ERR_PTR(-EEXIST);



			return av;

		}



		if (vol_id > av->vol_id)

			p = &(*p)->rb_left;

		else

			p = &(*p)->rb_right;

	}



	if (!(flags & AV_ADD))

		return NULL;



	/* The volume is absent - add it */

	av = kzalloc(sizeof(*av), GFP_KERNEL);

	if (!av)

		return ERR_PTR(-ENOMEM);



	av->vol_id = vol_id;



	if (vol_id > ai->highest_vol_id)

		ai->highest_vol_id = vol_id;



	rb_link_node(&av->rb, parent, p);

	rb_insert_color(&av->rb, &ai->volumes);

	ai->vols_found += 1;

	*created = true;

	dbg_bld("added volume %d", vol_id);

	return av;

}



/**

 * ubi_find_or_add_av - search for a volume in the attaching information and

 *			add one if it does not exist.

 * @ai: attaching information

 * @vol_id: the requested volume ID

 * @created: whether the volume has been created or not

 *

 * This function returns a pointer to the new volume description or an

 * ERR_PTR if the operation failed.

 */

static struct ubi_ainf_volume *ubi_find_or_add_av(struct ubi_attach_info *ai,

						  int vol_id, bool *created)

{

	return find_or_add_av(ai, vol_id, AV_FIND_OR_ADD, created);

}



/**

 * ubi_alloc_aeb - allocate an aeb element

 * @ai: attaching information

 * @pnum: physical eraseblock number

 * @ec: erase counter of the physical eraseblock

 *

 * Allocate an aeb object and initialize the pnum and ec information.

 * vol_id and lnum are set to UBI_UNKNOWN, and the other fields are

 * initialized to zero.

 * Note that the element is not added in any list or RB tree.

 */

struct ubi_ainf_peb *ubi_alloc_aeb(struct ubi_attach_info *ai, int pnum,

				   int ec)

{

	struct ubi_ainf_peb *aeb;



	aeb = kmem_cache_zalloc(ai->aeb_slab_cache, GFP_KERNEL);

	if (!aeb)

		return NULL;



	aeb->pnum = pnum;

	aeb->ec = ec;

	aeb->vol_id = UBI_UNKNOWN;

	aeb->lnum = UBI_UNKNOWN;



	return aeb;

}



/**

 * ubi_free_aeb - free an aeb element

 * @ai: attaching information

 * @aeb: the element to free

 *

 * Free an aeb object. The caller must have removed the element from any list

 * or RB tree.

 */

void ubi_free_aeb(struct ubi_attach_info *ai, struct ubi_ainf_peb *aeb)

{

	kmem_cache_free(ai->aeb_slab_cache, aeb);

}



/**

 * add_to_list - add physical eraseblock to a list.
@@ -131,14 +254,12 @@ static int add_to_list(struct ubi_attach_info *ai, int pnum, int vol_id, 
	} else

		BUG();



	aeb = kmem_cache_alloc(ai->aeb_slab_cache, GFP_KERNEL);

	aeb = ubi_alloc_aeb(ai, pnum, ec);

	if (!aeb)

		return -ENOMEM;



	aeb->pnum = pnum;

	aeb->vol_id = vol_id;

	aeb->lnum = lnum;

	aeb->ec = ec;

	if (to_head)

		list_add(&aeb->u.list, list);

	else
@@ -163,13 +284,11 @@ static int add_corrupted(struct ubi_attach_info *ai, int pnum, int ec) 


	dbg_bld("add to corrupted: PEB %d, EC %d", pnum, ec);



	aeb = kmem_cache_alloc(ai->aeb_slab_cache, GFP_KERNEL);

	aeb = ubi_alloc_aeb(ai, pnum, ec);

	if (!aeb)

		return -ENOMEM;



	ai->corr_peb_count += 1;

	aeb->pnum = pnum;

	aeb->ec = ec;

	list_add(&aeb->u.list, &ai->corr);

	return 0;

}
@@ -192,14 +311,12 @@ static int add_fastmap(struct ubi_attach_info *ai, int pnum, 
{

	struct ubi_ainf_peb *aeb;



	aeb = kmem_cache_alloc(ai->aeb_slab_cache, GFP_KERNEL);

	aeb = ubi_alloc_aeb(ai, pnum, ec);

	if (!aeb)

		return -ENOMEM;



	aeb->pnum = pnum;

	aeb->vol_id = be32_to_cpu(vidh->vol_id);

	aeb->sqnum = be64_to_cpu(vidh->sqnum);

	aeb->ec = ec;

	aeb->vol_id = be32_to_cpu(vid_hdr->vol_id);

	aeb->sqnum = be64_to_cpu(vid_hdr->sqnum);

	list_add(&aeb->u.list, &ai->fastmap);



	dbg_bld("add to fastmap list: PEB %d, vol_id %d, sqnum: %llu", pnum,
@@ -294,44 +411,20 @@ static struct ubi_ainf_volume *add_volume(struct ubi_attach_info *ai, 
					  const struct ubi_vid_hdr *vid_hdr)

{

	struct ubi_ainf_volume *av;

	struct rb_node **p = &ai->volumes.rb_node, *parent = NULL;

	bool created;



	ubi_assert(vol_id == be32_to_cpu(vid_hdr->vol_id));



	/* Walk the volume RB-tree to look if this volume is already present */

	while (*p) {

		parent = *p;

		av = rb_entry(parent, struct ubi_ainf_volume, rb);



		if (vol_id == av->vol_id)

	av = ubi_find_or_add_av(ai, vol_id, &created);

	if (IS_ERR(av) || !created)

		return av;



		if (vol_id > av->vol_id)

			p = &(*p)->rb_left;

		else

			p = &(*p)->rb_right;

	}



	/* The volume is absent - add it */

	av = kmalloc(sizeof(struct ubi_ainf_volume), GFP_KERNEL);

	if (!av)

		return ERR_PTR(-ENOMEM);



	av->highest_lnum = av->leb_count = 0;

	av->vol_id = vol_id;

	av->root = RB_ROOT;

	av->used_ebs = be32_to_cpu(vid_hdr->used_ebs);

	av->data_pad = be32_to_cpu(vid_hdr->data_pad);

	av->compat = vid_hdr->compat;

	av->vol_type = vid_hdr->vol_type == UBI_VID_DYNAMIC ? UBI_DYNAMIC_VOLUME

							    : UBI_STATIC_VOLUME;

	if (vol_id > ai->highest_vol_id)

		ai->highest_vol_id = vol_id;



	rb_link_node(&av->rb, parent, p);

	rb_insert_color(&av->rb, &ai->volumes);

	ai->vols_found += 1;

	dbg_bld("added volume %d", vol_id);

	return av;

}
@@ -360,7 +453,7 @@ int ubi_compare_lebs(struct ubi_device *ubi, const struct ubi_ainf_peb *aeb, 
{

	int len, err, second_is_newer, bitflips = 0, corrupted = 0;

	uint32_t data_crc, crc;

	struct ubi_vid_hdr *vh = NULL;

	struct ubi_vid_io_buf *vidb = NULL;

	unsigned long long sqnum2 = be64_to_cpu(vid_hdr->sqnum);



	if (sqnum2 == aeb->sqnum) {
@@ -403,12 +496,12 @@ int ubi_compare_lebs(struct ubi_device *ubi, const struct ubi_ainf_peb *aeb, 
			return bitflips << 1;

		}



		vh = ubi_zalloc_vid_hdr(ubi, GFP_KERNEL);

		if (!vh)

		vidb = ubi_alloc_vid_buf(ubi, GFP_KERNEL);

		if (!vidb)

			return -ENOMEM;



		pnum = aeb->pnum;

		err = ubi_io_read_vid_hdr(ubi, pnum, vh, 0);

		err = ubi_io_read_vid_hdr(ubi, pnum, vidb, 0);

		if (err) {

			if (err == UBI_IO_BITFLIPS)

				bitflips = 1;
@@ -422,7 +515,7 @@ int ubi_compare_lebs(struct ubi_device *ubi, const struct ubi_ainf_peb *aeb, 
			}

		}



		vid_hdr = vh;

		vid_hdr = ubi_get_vid_hdr(vidb);

	}



	/* Read the data of the copy and check the CRC */
@@ -448,7 +541,7 @@ int ubi_compare_lebs(struct ubi_device *ubi, const struct ubi_ainf_peb *aeb, 
	}

	mutex_unlock(&ubi->buf_mutex);



	ubi_free_vid_hdr(ubi, vh);

	ubi_free_vid_buf(vidb);



	if (second_is_newer)

		dbg_bld("second PEB %d is newer, copy_flag is set", pnum);
@@ -460,7 +553,7 @@ int ubi_compare_lebs(struct ubi_device *ubi, const struct ubi_ainf_peb *aeb, 
out_unlock:

	mutex_unlock(&ubi->buf_mutex);

out_free_vidh:

	ubi_free_vid_hdr(ubi, vh);

	ubi_free_vid_buf(vidb);

	return err;

}
@@ -605,12 +698,10 @@ int ubi_add_to_av(struct ubi_device *ubi, struct ubi_attach_info *ai, int pnum, 
	if (err)

		return err;



	aeb = kmem_cache_alloc(ai->aeb_slab_cache, GFP_KERNEL);

	aeb = ubi_alloc_aeb(ai, pnum, ec);

	if (!aeb)

		return -ENOMEM;



	aeb->ec = ec;

	aeb->pnum = pnum;

	aeb->vol_id = vol_id;

	aeb->lnum = lnum;

	aeb->scrub = bitflips;
@@ -628,6 +719,21 @@ int ubi_add_to_av(struct ubi_device *ubi, struct ubi_attach_info *ai, int pnum, 
	return 0;

}



/**

 * ubi_add_av - add volume to the attaching information.

 * @ai: attaching information

 * @vol_id: the requested volume ID

 *

 * This function returns a pointer to the new volume description or an

 * ERR_PTR if the operation failed.

 */

struct ubi_ainf_volume *ubi_add_av(struct ubi_attach_info *ai, int vol_id)

{

	bool created;



	return find_or_add_av(ai, vol_id, AV_ADD, &created);

}



/**

 * ubi_find_av - find volume in the attaching information.

 * @ai: attaching information
@@ -639,23 +745,14 @@ int ubi_add_to_av(struct ubi_device *ubi, struct ubi_attach_info *ai, int pnum, 
struct ubi_ainf_volume *ubi_find_av(const struct ubi_attach_info *ai,

				    int vol_id)

{

	struct ubi_ainf_volume *av;

	struct rb_node *p = ai->volumes.rb_node;

	bool created;



	while (p) {

		av = rb_entry(p, struct ubi_ainf_volume, rb);



		if (vol_id == av->vol_id)

			return av;



		if (vol_id > av->vol_id)

			p = p->rb_left;

		else

			p = p->rb_right;

	return find_or_add_av((struct ubi_attach_info *)ai, vol_id, AV_FIND,

			      &created);

}



	return NULL;

}

static void destroy_av(struct ubi_attach_info *ai, struct ubi_ainf_volume *av,

		       struct list_head *list);



/**

 * ubi_remove_av - delete attaching information about a volume.
@@ -664,19 +761,10 @@ struct ubi_ainf_volume *ubi_find_av(const struct ubi_attach_info *ai, 
 */

void ubi_remove_av(struct ubi_attach_info *ai, struct ubi_ainf_volume *av)

{

	struct rb_node *rb;

	struct ubi_ainf_peb *aeb;



	dbg_bld("remove attaching information about volume %d", av->vol_id);



	while ((rb = rb_first(&av->root))) {

		aeb = rb_entry(rb, struct ubi_ainf_peb, u.rb);

		rb_erase(&aeb->u.rb, &av->root);

		list_add_tail(&aeb->u.list, &ai->erase);

	}



	rb_erase(&av->rb, &ai->volumes);

	kfree(av);

	destroy_av(ai, av, &ai->erase);

	ai->vols_found -= 1;

}
@@ -866,6 +954,9 @@ static bool vol_ignored(int vol_id) 
static int scan_peb(struct ubi_device *ubi, struct ubi_attach_info *ai,

		    int pnum, bool fast)

{

	struct ubi_ec_hdr *ech = ai->ech;

	struct ubi_vid_io_buf *vidb = ai->vidb;

	struct ubi_vid_hdr *vidh = ubi_get_vid_hdr(vidb);

	long long ec;

	int err, bitflips = 0, vol_id = -1, ec_err = 0;
@@ -963,7 +1054,7 @@ static int scan_peb(struct ubi_device *ubi, struct ubi_attach_info *ai, 


	/* OK, we've done with the EC header, let's look at the VID header */



	err = ubi_io_read_vid_hdr(ubi, pnum, vidh, 0);

	err = ubi_io_read_vid_hdr(ubi, pnum, vidb, 0);

	if (err < 0)

		return err;

	switch (err) {
@@ -1191,10 +1282,12 @@ static int late_analysis(struct ubi_device *ubi, struct ubi_attach_info *ai) 
 * destroy_av - free volume attaching information.

 * @av: volume attaching information

 * @ai: attaching information

 * @list: put the aeb elements in there if !NULL, otherwise free them

 *

 * This function destroys the volume attaching information.

 */

static void destroy_av(struct ubi_attach_info *ai, struct ubi_ainf_volume *av)

static void destroy_av(struct ubi_attach_info *ai, struct ubi_ainf_volume *av,

		       struct list_head *list)

{

	struct ubi_ainf_peb *aeb;

	struct rb_node *this = av->root.rb_node;
@@ -1214,7 +1307,10 @@ static void destroy_av(struct ubi_attach_info *ai, struct ubi_ainf_volume *av) 
					this->rb_right = NULL;

			}



			kmem_cache_free(ai->aeb_slab_cache, aeb);

			if (list)

				list_add_tail(&aeb->u.list, list);

			else

				ubi_free_aeb(ai, aeb);

		}

	}

	kfree(av);
@@ -1232,23 +1328,23 @@ static void destroy_ai(struct ubi_attach_info *ai) 


	list_for_each_entry_safe(aeb, aeb_tmp, &ai->alien, u.list) {

		list_del(&aeb->u.list);

		kmem_cache_free(ai->aeb_slab_cache, aeb);

		ubi_free_aeb(ai, aeb);

	}

	list_for_each_entry_safe(aeb, aeb_tmp, &ai->erase, u.list) {

		list_del(&aeb->u.list);

		kmem_cache_free(ai->aeb_slab_cache, aeb);

		ubi_free_aeb(ai, aeb);

	}

	list_for_each_entry_safe(aeb, aeb_tmp, &ai->corr, u.list) {

		list_del(&aeb->u.list);

		kmem_cache_free(ai->aeb_slab_cache, aeb);

		ubi_free_aeb(ai, aeb);

	}

	list_for_each_entry_safe(aeb, aeb_tmp, &ai->free, u.list) {

		list_del(&aeb->u.list);

		kmem_cache_free(ai->aeb_slab_cache, aeb);

		ubi_free_aeb(ai, aeb);

	}

	list_for_each_entry_safe(aeb, aeb_tmp, &ai->fastmap, u.list) {

		list_del(&aeb->u.list);

		kmem_cache_free(ai->aeb_slab_cache, aeb);

		ubi_free_aeb(ai, aeb);

	}



	/* Destroy the volume RB-tree */
@@ -1269,7 +1365,7 @@ static void destroy_ai(struct ubi_attach_info *ai) 
					rb->rb_right = NULL;

			}



			destroy_av(ai, av);

			destroy_av(ai, av, NULL);

		}

	}
@@ -1297,12 +1393,12 @@ static int scan_all(struct ubi_device *ubi, struct ubi_attach_info *ai, 


	err = -ENOMEM;



	ech = kzalloc(ubi->ec_hdr_alsize, GFP_KERNEL);

	if (!ech)

	ai->ech = kzalloc(ubi->ec_hdr_alsize, GFP_KERNEL);

	if (!ai->ech)

		return err;



	vidh = ubi_zalloc_vid_hdr(ubi, GFP_KERNEL);

	if (!vidh)

	ai->vidb = ubi_alloc_vid_buf(ubi, GFP_KERNEL);

	if (!ai->vidb)

		goto out_ech;



	for (pnum = start; pnum < ubi->peb_count; pnum++) {
@@ -1351,15 +1447,15 @@ static int scan_all(struct ubi_device *ubi, struct ubi_attach_info *ai, 
	if (err)

		goto out_vidh;



	ubi_free_vid_hdr(ubi, vidh);

	kfree(ech);

	ubi_free_vid_buf(ai->vidb);

	kfree(ai->ech);



	return 0;



out_vidh:

	ubi_free_vid_hdr(ubi, vidh);

	ubi_free_vid_buf(ai->vidb);

out_ech:

	kfree(ech);

	kfree(ai->ech);

	return err;

}
@@ -1411,12 +1507,12 @@ static int scan_fast(struct ubi_device *ubi, struct ubi_attach_info **ai) 
	if (!scan_ai)

		goto out;



	ech = kzalloc(ubi->ec_hdr_alsize, GFP_KERNEL);

	if (!ech)

	scan_ai->ech = kzalloc(ubi->ec_hdr_alsize, GFP_KERNEL);

	if (!scan_ai->ech)

		goto out_ai;



	vidh = ubi_zalloc_vid_hdr(ubi, GFP_KERNEL);

	if (!vidh)

	scan_ai->vidb = ubi_alloc_vid_buf(ubi, GFP_KERNEL);

	if (!scan_ai->vidb)

		goto out_ech;



	for (pnum = 0; pnum < UBI_FM_MAX_START; pnum++) {
@@ -1428,8 +1524,8 @@ static int scan_fast(struct ubi_device *ubi, struct ubi_attach_info **ai) 
			goto out_vidh;

	}



	ubi_free_vid_hdr(ubi, vidh);

	kfree(ech);

	ubi_free_vid_buf(scan_ai->vidb);

	kfree(scan_ai->ech);



	if (scan_ai->force_full_scan)

		err = UBI_NO_FASTMAP;
@@ -1449,9 +1545,9 @@ static int scan_fast(struct ubi_device *ubi, struct ubi_attach_info **ai) 
	return err;



out_vidh:

	ubi_free_vid_hdr(ubi, vidh);

	ubi_free_vid_buf(scan_ai->vidb);

out_ech:

	kfree(ech);

	kfree(scan_ai->ech);

out_ai:

	destroy_ai(scan_ai);

out:
@@ -1573,6 +1669,8 @@ out_ai: 
 */

static int self_check_ai(struct ubi_device *ubi, struct ubi_attach_info *ai)

{

	struct ubi_vid_io_buf *vidb = ai->vidb;

	struct ubi_vid_hdr *vidh = ubi_get_vid_hdr(vidb);

	int pnum, err, vols_found = 0;

	struct rb_node *rb1, *rb2;

	struct ubi_ainf_volume *av;
@@ -1708,7 +1806,7 @@ static int self_check_ai(struct ubi_device *ubi, struct ubi_attach_info *ai) 


			last_aeb = aeb;



			err = ubi_io_read_vid_hdr(ubi, aeb->pnum, vidh, 1);

			err = ubi_io_read_vid_hdr(ubi, aeb->pnum, vidb, 1);

			if (err && err != UBI_IO_BITFLIPS) {

				ubi_err(ubi, "VID header is not OK (%d)",

					err);

drivers/mtd/ubi/build.c

+1 −1
Original line number Diff line number Diff line
@@ -574,7 +574,7 @@ void ubi_free_internal_volumes(struct ubi_device *ubi) 


	for (i = ubi->vtbl_slots;

	     i < ubi->vtbl_slots + UBI_INT_VOL_COUNT; i++) {

		kfree(ubi->volumes[i]->eba_tbl);

		ubi_eba_replace_table(ubi->volumes[i], NULL);

		kfree(ubi->volumes[i]);

	}

}

drivers/mtd/ubi/cdev.c

+3 −3
Original line number Diff line number Diff line
@@ -416,7 +416,7 @@ static long vol_cdev_ioctl(struct file *file, unsigned int cmd, 
		}



		rsvd_bytes = (long long)vol->reserved_pebs *

					ubi->leb_size-vol->data_pad;

					vol->usable_leb_size;

		if (bytes < 0 || bytes > rsvd_bytes) {

			err = -EINVAL;

			break;
@@ -454,7 +454,7 @@ static long vol_cdev_ioctl(struct file *file, unsigned int cmd, 


		/* Validate the request */

		err = -EINVAL;

		if (req.lnum < 0 || req.lnum >= vol->reserved_pebs ||

		if (!ubi_leb_valid(vol, req.lnum) ||

		    req.bytes < 0 || req.bytes > vol->usable_leb_size)

			break;
@@ -485,7 +485,7 @@ static long vol_cdev_ioctl(struct file *file, unsigned int cmd, 
			break;

		}



		if (lnum < 0 || lnum >= vol->reserved_pebs) {

		if (!ubi_leb_valid(vol, lnum)) {

			err = -EINVAL;

			break;

		}

drivers/mtd/ubi/eba.c

+387 −262

File changed.

Preview size limit exceeded, changes collapsed.

drivers/mtd/ubi/fastmap-wl.c

+4 −2
Original line number Diff line number Diff line
@@ -262,6 +262,8 @@ static struct ubi_wl_entry *get_peb_for_wl(struct ubi_device *ubi) 
	struct ubi_fm_pool *pool = &ubi->fm_wl_pool;

	int pnum;



	ubi_assert(rwsem_is_locked(&ubi->fm_eba_sem));



	if (pool->used == pool->size) {

		/* We cannot update the fastmap here because this

		 * function is called in atomic context.
@@ -303,7 +305,7 @@ int ubi_ensure_anchor_pebs(struct ubi_device *ubi) 


	wrk->anchor = 1;

	wrk->func = &wear_leveling_worker;

	schedule_ubi_work(ubi, wrk);

	__schedule_ubi_work(ubi, wrk);

	return 0;

}
@@ -344,7 +346,7 @@ int ubi_wl_put_fm_peb(struct ubi_device *ubi, struct ubi_wl_entry *fm_e, 
	spin_unlock(&ubi->wl_lock);



	vol_id = lnum ? UBI_FM_DATA_VOLUME_ID : UBI_FM_SB_VOLUME_ID;

	return schedule_erase(ubi, e, vol_id, lnum, torture);

	return schedule_erase(ubi, e, vol_id, lnum, torture, true);

}



/**

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