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()
  ...

1 files changed, 8 insertions, 8 deletions

diff --git a/drivers/mtd/ubi/kapi.c b/drivers/mtd/ubi/kapi.c
index a9e2cef7c95c..88b1897aeb40 100644
--- a/drivers/mtd/ubi/kapi.c
+++ b/drivers/mtd/ubi/kapi.c
@@ -538,7 +538,7 @@ int ubi_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
 	if (desc->mode == UBI_READONLY || vol->vol_type == UBI_STATIC_VOLUME)
 		return -EROFS;
 
-	if (lnum < 0 || lnum >= vol->reserved_pebs || offset < 0 || len < 0 ||
+	if (!ubi_leb_valid(vol, lnum) || offset < 0 || len < 0 ||
 	    offset + len > vol->usable_leb_size ||
 	    offset & (ubi->min_io_size - 1) || len & (ubi->min_io_size - 1))
 		return -EINVAL;
@@ -583,7 +583,7 @@ int ubi_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
 	if (desc->mode == UBI_READONLY || vol->vol_type == UBI_STATIC_VOLUME)
 		return -EROFS;
 
-	if (lnum < 0 || lnum >= vol->reserved_pebs || len < 0 ||
+	if (!ubi_leb_valid(vol, lnum) || len < 0 ||
 	    len > vol->usable_leb_size || len & (ubi->min_io_size - 1))
 		return -EINVAL;
 
@@ -620,7 +620,7 @@ int ubi_leb_erase(struct ubi_volume_desc *desc, int lnum)
 	if (desc->mode == UBI_READONLY || vol->vol_type == UBI_STATIC_VOLUME)
 		return -EROFS;
 
-	if (lnum < 0 || lnum >= vol->reserved_pebs)
+	if (!ubi_leb_valid(vol, lnum))
 		return -EINVAL;
 
 	if (vol->upd_marker)
@@ -680,7 +680,7 @@ int ubi_leb_unmap(struct ubi_volume_desc *desc, int lnum)
 	if (desc->mode == UBI_READONLY || vol->vol_type == UBI_STATIC_VOLUME)
 		return -EROFS;
 
-	if (lnum < 0 || lnum >= vol->reserved_pebs)
+	if (!ubi_leb_valid(vol, lnum))
 		return -EINVAL;
 
 	if (vol->upd_marker)
@@ -716,13 +716,13 @@ int ubi_leb_map(struct ubi_volume_desc *desc, int lnum)
 	if (desc->mode == UBI_READONLY || vol->vol_type == UBI_STATIC_VOLUME)
 		return -EROFS;
 
-	if (lnum < 0 || lnum >= vol->reserved_pebs)
+	if (!ubi_leb_valid(vol, lnum))
 		return -EINVAL;
 
 	if (vol->upd_marker)
 		return -EBADF;
 
-	if (vol->eba_tbl[lnum] >= 0)
+	if (ubi_eba_is_mapped(vol, lnum))
 		return -EBADMSG;
 
 	return ubi_eba_write_leb(ubi, vol, lnum, NULL, 0, 0);
@@ -751,13 +751,13 @@ int ubi_is_mapped(struct ubi_volume_desc *desc, int lnum)
 
 	dbg_gen("test LEB %d:%d", vol->vol_id, lnum);
 
-	if (lnum < 0 || lnum >= vol->reserved_pebs)
+	if (!ubi_leb_valid(vol, lnum))
 		return -EINVAL;
 
 	if (vol->upd_marker)
 		return -EBADF;
 
-	return vol->eba_tbl[lnum] >= 0;
+	return ubi_eba_is_mapped(vol, lnum);
 }
 EXPORT_SYMBOL_GPL(ubi_is_mapped);