Merge 3.3-rc2 into the driver-core-next branch.

This was done to resolve a merge and build problem with the
drivers/acpi/processor_driver.c file.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

47 files changed, 788 insertions, 487 deletions

diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index b9a843226de8..633c701a287d 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -297,7 +297,7 @@ static int __add_delayed_refs(struct btrfs_delayed_ref_head *head, u64 seq,
 	struct btrfs_delayed_extent_op *extent_op = head->extent_op;
 	struct rb_node *n = &head->node.rb_node;
 	int sgn;
-	int ret;
+	int ret = 0;
 
 	if (extent_op && extent_op->update_key)
 		btrfs_disk_key_to_cpu(info_key, &extent_op->key);
@@ -392,7 +392,7 @@ static int __add_inline_refs(struct btrfs_fs_info *fs_info,
 			     struct btrfs_key *info_key, int *info_level,
 			     struct list_head *prefs)
 {
-	int ret;
+	int ret = 0;
 	int slot;
 	struct extent_buffer *leaf;
 	struct btrfs_key key;
diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c
index ad0b3ba735b7..b669a7d8e499 100644
--- a/fs/btrfs/check-integrity.c
+++ b/fs/btrfs/check-integrity.c
@@ -1662,7 +1662,7 @@ static void btrfsic_process_written_block(struct btrfsic_dev_state *dev_state,
 	block = btrfsic_block_hashtable_lookup(bdev, dev_bytenr,
 					       &state->block_hashtable);
 	if (NULL != block) {
-		u64 bytenr;
+		u64 bytenr = 0;
 		struct list_head *elem_ref_to;
 		struct list_head *tmp_ref_to;
 
@@ -2777,9 +2777,10 @@ int btrfsic_submit_bh(int rw, struct buffer_head *bh)
 			printk(KERN_INFO
 			       "submit_bh(rw=0x%x, blocknr=%lu (bytenr %llu),"
 			       " size=%lu, data=%p, bdev=%p)\n",
-			       rw, bh->b_blocknr,
-			       (unsigned long long)dev_bytenr, bh->b_size,
-			       bh->b_data, bh->b_bdev);
+			       rw, (unsigned long)bh->b_blocknr,
+			       (unsigned long long)dev_bytenr,
+			       (unsigned long)bh->b_size, bh->b_data,
+			       bh->b_bdev);
 		btrfsic_process_written_block(dev_state, dev_bytenr,
 					      bh->b_data, bh->b_size, NULL,
 					      NULL, bh, rw);
@@ -2844,7 +2845,7 @@ void btrfsic_submit_bio(int rw, struct bio *bio)
 			printk(KERN_INFO
 			       "submit_bio(rw=0x%x, bi_vcnt=%u,"
 			       " bi_sector=%lu (bytenr %llu), bi_bdev=%p)\n",
-			       rw, bio->bi_vcnt, bio->bi_sector,
+			       rw, bio->bi_vcnt, (unsigned long)bio->bi_sector,
 			       (unsigned long long)dev_bytenr,
 			       bio->bi_bdev);
 
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 7aa9cd36bf1b..811d9f918b1c 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -962,6 +962,13 @@ static int btree_releasepage(struct page *page, gfp_t gfp_flags)
 	tree = &BTRFS_I(page->mapping->host)->io_tree;
 	map = &BTRFS_I(page->mapping->host)->extent_tree;
 
+	/*
+	 * We need to mask out eg. __GFP_HIGHMEM and __GFP_DMA32 as we're doing
+	 * slab allocation from alloc_extent_state down the callchain where
+	 * it'd hit a BUG_ON as those flags are not allowed.
+	 */
+	gfp_flags &= ~GFP_SLAB_BUG_MASK;
+
 	ret = try_release_extent_state(map, tree, page, gfp_flags);
 	if (!ret)
 		return 0;
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 700879ed64cf..283af7a676a3 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -34,23 +34,24 @@
 #include "locking.h"
 #include "free-space-cache.h"
 
-/* control flags for do_chunk_alloc's force field
+/*
+ * control flags for do_chunk_alloc's force field
  * CHUNK_ALLOC_NO_FORCE means to only allocate a chunk
  * if we really need one.
  *
- * CHUNK_ALLOC_FORCE means it must try to allocate one
- *
  * CHUNK_ALLOC_LIMITED means to only try and allocate one
  * if we have very few chunks already allocated.  This is
  * used as part of the clustering code to help make sure
  * we have a good pool of storage to cluster in, without
  * filling the FS with empty chunks
  *
+ * CHUNK_ALLOC_FORCE means it must try to allocate one
+ *
  */
 enum {
 	CHUNK_ALLOC_NO_FORCE = 0,
-	CHUNK_ALLOC_FORCE = 1,
-	CHUNK_ALLOC_LIMITED = 2,
+	CHUNK_ALLOC_LIMITED = 1,
+	CHUNK_ALLOC_FORCE = 2,
 };
 
 /*
@@ -3414,7 +3415,7 @@ static int do_chunk_alloc(struct btrfs_trans_handle *trans,
 
 again:
 	spin_lock(&space_info->lock);
-	if (space_info->force_alloc)
+	if (force < space_info->force_alloc)
 		force = space_info->force_alloc;
 	if (space_info->full) {
 		spin_unlock(&space_info->lock);
@@ -5794,6 +5795,7 @@ int btrfs_reserve_extent(struct btrfs_trans_handle *trans,
 			 u64 search_end, struct btrfs_key *ins,
 			 u64 data)
 {
+	bool final_tried = false;
 	int ret;
 	u64 search_start = 0;
 
@@ -5813,22 +5815,25 @@ again:
 			       search_start, search_end, hint_byte,
 			       ins, data);
 
-	if (ret == -ENOSPC && num_bytes > min_alloc_size) {
-		num_bytes = num_bytes >> 1;
-		num_bytes = num_bytes & ~(root->sectorsize - 1);
-		num_bytes = max(num_bytes, min_alloc_size);
-		do_chunk_alloc(trans, root->fs_info->extent_root,
-			       num_bytes, data, CHUNK_ALLOC_FORCE);
-		goto again;
-	}
-	if (ret == -ENOSPC && btrfs_test_opt(root, ENOSPC_DEBUG)) {
-		struct btrfs_space_info *sinfo;
-
-		sinfo = __find_space_info(root->fs_info, data);
-		printk(KERN_ERR "btrfs allocation failed flags %llu, "
-		       "wanted %llu\n", (unsigned long long)data,
-		       (unsigned long long)num_bytes);
-		dump_space_info(sinfo, num_bytes, 1);
+	if (ret == -ENOSPC) {
+		if (!final_tried) {
+			num_bytes = num_bytes >> 1;
+			num_bytes = num_bytes & ~(root->sectorsize - 1);
+			num_bytes = max(num_bytes, min_alloc_size);
+			do_chunk_alloc(trans, root->fs_info->extent_root,
+				       num_bytes, data, CHUNK_ALLOC_FORCE);
+			if (num_bytes == min_alloc_size)
+				final_tried = true;
+			goto again;
+		} else if (btrfs_test_opt(root, ENOSPC_DEBUG)) {
+			struct btrfs_space_info *sinfo;
+
+			sinfo = __find_space_info(root->fs_info, data);
+			printk(KERN_ERR "btrfs allocation failed flags %llu, "
+			       "wanted %llu\n", (unsigned long long)data,
+			       (unsigned long long)num_bytes);
+			dump_space_info(sinfo, num_bytes, 1);
+		}
 	}
 
 	trace_btrfs_reserved_extent_alloc(root, ins->objectid, ins->offset);
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 9d09a4f81875..fcf77e1ded40 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -3909,6 +3909,8 @@ int extent_range_uptodate(struct extent_io_tree *tree,
 	while (start <= end) {
 		index = start >> PAGE_CACHE_SHIFT;
 		page = find_get_page(tree->mapping, index);
+		if (!page)
+			return 1;
 		uptodate = PageUptodate(page);
 		page_cache_release(page);
 		if (!uptodate) {
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index d20ff87ca603..c2f20594c9f7 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -2242,7 +2242,7 @@ u64 btrfs_alloc_from_cluster(struct btrfs_block_group_cache *block_group,
 		if (entry->bitmap) {
 			ret = btrfs_alloc_from_bitmap(block_group,
 						      cluster, entry, bytes,
-						      min_start);
+						      cluster->window_start);
 			if (ret == 0) {
 				node = rb_next(&entry->offset_index);
 				if (!node)
@@ -2251,6 +2251,7 @@ u64 btrfs_alloc_from_cluster(struct btrfs_block_group_cache *block_group,
 						 offset_index);
 				continue;
 			}
+			cluster->window_start += bytes;
 		} else {
 			ret = entry->offset;
 
@@ -2475,7 +2476,7 @@ setup_cluster_bitmap(struct btrfs_block_group_cache *block_group,
 	}
 
 	list_for_each_entry(entry, bitmaps, list) {
-		if (entry->bytes < min_bytes)
+		if (entry->bytes < bytes)
 			continue;
 		ret = btrfs_bitmap_cluster(block_group, entry, cluster, offset,
 					   bytes, cont1_bytes, min_bytes);
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 0da19a0ea00d..32214fe0f7e3 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -6401,18 +6401,23 @@ int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
 	unsigned long zero_start;
 	loff_t size;
 	int ret;
+	int reserved = 0;
 	u64 page_start;
 	u64 page_end;
 
 	ret  = btrfs_delalloc_reserve_space(inode, PAGE_CACHE_SIZE);
-	if (!ret)
+	if (!ret) {
 		ret = btrfs_update_time(vma->vm_file);
+		reserved = 1;
+	}
 	if (ret) {
 		if (ret == -ENOMEM)
 			ret = VM_FAULT_OOM;
 		else /* -ENOSPC, -EIO, etc */
 			ret = VM_FAULT_SIGBUS;
-		goto out;
+		if (reserved)
+			goto out;
+		goto out_noreserve;
 	}
 
 	ret = VM_FAULT_NOPAGE; /* make the VM retry the fault */
@@ -6495,6 +6500,7 @@ out_unlock:
 	unlock_page(page);
 out:
 	btrfs_delalloc_release_space(inode, PAGE_CACHE_SIZE);
+out_noreserve:
 	return ret;
 }
 
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index ab620014bcc3..03bb62a9ee24 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1065,7 +1065,7 @@ int btrfs_defrag_file(struct inode *inode, struct file *file,
 		i = range->start >> PAGE_CACHE_SHIFT;
 	}
 	if (!max_to_defrag)
-		max_to_defrag = last_index;
+		max_to_defrag = last_index + 1;
 
 	/*
 	 * make writeback starts from i, so the defrag range can be
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index cb877e0886a7..966cc74f5d6c 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -1957,7 +1957,8 @@ static int wait_log_commit(struct btrfs_trans_handle *trans,
 
 		finish_wait(&root->log_commit_wait[index], &wait);
 		mutex_lock(&root->log_mutex);
-	} while (root->log_transid < transid + 2 &&
+	} while (root->fs_info->last_trans_log_full_commit !=
+		 trans->transid && root->log_transid < transid + 2 &&
 		 atomic_read(&root->log_commit[index]));
 	return 0;
 }
@@ -1966,7 +1967,8 @@ static int wait_for_writer(struct btrfs_trans_handle *trans,
 			   struct btrfs_root *root)
 {
 	DEFINE_WAIT(wait);
-	while (atomic_read(&root->log_writers)) {
+	while (root->fs_info->last_trans_log_full_commit !=
+	       trans->transid && atomic_read(&root->log_writers)) {
 		prepare_to_wait(&root->log_writer_wait,
 				&wait, TASK_UNINTERRUPTIBLE);
 		mutex_unlock(&root->log_mutex);
diff --git a/fs/cifs/Kconfig b/fs/cifs/Kconfig
index f66cc1625150..0554b00a7b33 100644
--- a/fs/cifs/Kconfig
+++ b/fs/cifs/Kconfig
@@ -140,7 +140,6 @@ config CIFS_DFS_UPCALL
 
 config CIFS_FSCACHE
 	  bool "Provide CIFS client caching support (EXPERIMENTAL)"
-	  depends on EXPERIMENTAL
 	  depends on CIFS=m && FSCACHE || CIFS=y && FSCACHE=y
 	  help
 	    Makes CIFS FS-Cache capable. Say Y here if you want your CIFS data
@@ -149,7 +148,7 @@ config CIFS_FSCACHE
 
 config CIFS_ACL
 	  bool "Provide CIFS ACL support (EXPERIMENTAL)"
-	  depends on EXPERIMENTAL && CIFS_XATTR && KEYS
+	  depends on CIFS_XATTR && KEYS
 	  help
 	    Allows to fetch CIFS/NTFS ACL from the server.  The DACL blob
 	    is handed over to the application/caller.
diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index 84e8c0724704..24b3dfc05282 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -676,14 +676,23 @@ static ssize_t cifs_multiuser_mount_proc_write(struct file *file,
 {
 	char c;
 	int rc;
+	static bool warned;
 
 	rc = get_user(c, buffer);
 	if (rc)
 		return rc;
 	if (c == '0' || c == 'n' || c == 'N')
 		multiuser_mount = 0;
-	else if (c == '1' || c == 'y' || c == 'Y')
+	else if (c == '1' || c == 'y' || c == 'Y') {
 		multiuser_mount = 1;
+		if (!warned) {
+			warned = true;
+			printk(KERN_WARNING "CIFS VFS: The legacy multiuser "
+				"mount code is scheduled to be deprecated in "
+				"3.5. Please switch to using the multiuser "
+				"mount option.");
+		}
+	}
 
 	return count;
 }
diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c
index 2272fd5fe5b7..e622863b292f 100644
--- a/fs/cifs/cifs_spnego.c
+++ b/fs/cifs/cifs_spnego.c
@@ -113,9 +113,11 @@ cifs_get_spnego_key(struct cifs_ses *sesInfo)
 		   MAX_MECH_STR_LEN +
 		   UID_KEY_LEN + (sizeof(uid_t) * 2) +
 		   CREDUID_KEY_LEN + (sizeof(uid_t) * 2) +
-		   USER_KEY_LEN + strlen(sesInfo->user_name) +
 		   PID_KEY_LEN + (sizeof(pid_t) * 2) + 1;
 
+	if (sesInfo->user_name)
+		desc_len += USER_KEY_LEN + strlen(sesInfo->user_name);
+
 	spnego_key = ERR_PTR(-ENOMEM);
 	description = kzalloc(desc_len, GFP_KERNEL);
 	if (description == NULL)
@@ -152,8 +154,10 @@ cifs_get_spnego_key(struct cifs_ses *sesInfo)
 	dp = description + strlen(description);
 	sprintf(dp, ";creduid=0x%x", sesInfo->cred_uid);
 
-	dp = description + strlen(description);
-	sprintf(dp, ";user=%s", sesInfo->user_name);
+	if (sesInfo->user_name) {
+		dp = description + strlen(description);
+		sprintf(dp, ";user=%s", sesInfo->user_name);
+	}
 
 	dp = description + strlen(description);
 	sprintf(dp, ";pid=0x%x", current->pid);
diff --git a/fs/cifs/cifs_unicode.c b/fs/cifs/cifs_unicode.c
index 1b2e180b018d..fbb9da951843 100644
--- a/fs/cifs/cifs_unicode.c
+++ b/fs/cifs/cifs_unicode.c
@@ -27,17 +27,17 @@
 #include "cifs_debug.h"
 
 /*
- * cifs_ucs2_bytes - how long will a string be after conversion?
- * @ucs - pointer to input string
+ * cifs_utf16_bytes - how long will a string be after conversion?
+ * @utf16 - pointer to input string
  * @maxbytes - don't go past this many bytes of input string
  * @codepage - destination codepage
  *
- * Walk a ucs2le string and return the number of bytes that the string will
+ * Walk a utf16le string and return the number of bytes that the string will
  * be after being converted to the given charset, not including any null
  * termination required. Don't walk past maxbytes in the source buffer.
  */
 int
-cifs_ucs2_bytes(const __le16 *from, int maxbytes,
+cifs_utf16_bytes(const __le16 *from, int maxbytes,
 		const struct nls_table *codepage)
 {
 	int i;
@@ -122,7 +122,7 @@ cp_convert:
 }
 
 /*
- * cifs_from_ucs2 - convert utf16le string to local charset
+ * cifs_from_utf16 - convert utf16le string to local charset
  * @to - destination buffer
  * @from - source buffer
  * @tolen - destination buffer size (in bytes)
@@ -130,7 +130,7 @@ cp_convert:
  * @codepage - codepage to which characters should be converted
  * @mapchar - should characters be remapped according to the mapchars option?
  *
- * Convert a little-endian ucs2le string (as sent by the server) to a string
+ * Convert a little-endian utf16le string (as sent by the server) to a string
  * in the provided codepage. The tolen and fromlen parameters are to ensure
  * that the code doesn't walk off of the end of the buffer (which is always
  * a danger if the alignment of the source buffer is off). The destination
@@ -139,12 +139,12 @@ cp_convert:
  * null terminator).
  *
  * Note that some windows versions actually send multiword UTF-16 characters
- * instead of straight UCS-2. The linux nls routines however aren't able to
+ * instead of straight UTF16-2. The linux nls routines however aren't able to
  * deal with those characters properly. In the event that we get some of
  * those characters, they won't be translated properly.
  */
 int
-cifs_from_ucs2(char *to, const __le16 *from, int tolen, int fromlen,
+cifs_from_utf16(char *to, const __le16 *from, int tolen, int fromlen,
 		 const struct nls_table *codepage, bool mapchar)
 {
 	int i, charlen, safelen;
@@ -190,13 +190,13 @@ cifs_from_ucs2(char *to, const __le16 *from, int tolen, int fromlen,
 }
 
 /*
- * NAME:	cifs_strtoUCS()
+ * NAME:	cifs_strtoUTF16()
  *
  * FUNCTION:	Convert character string to unicode string
  *
  */
 int
-cifs_strtoUCS(__le16 *to, const char *from, int len,
+cifs_strtoUTF16(__le16 *to, const char *from, int len,
 	      const struct nls_table *codepage)
 {
 	int charlen;
@@ -206,7 +206,7 @@ cifs_strtoUCS(__le16 *to, const char *from, int len,
 	for (i = 0; len && *from; i++, from += charlen, len -= charlen) {
 		charlen = codepage->char2uni(from, len, &wchar_to);
 		if (charlen < 1) {
-			cERROR(1, "strtoUCS: char2uni of 0x%x returned %d",
+			cERROR(1, "strtoUTF16: char2uni of 0x%x returned %d",
 				*from, charlen);
 			/* A question mark */
 			wchar_to = 0x003f;
@@ -220,7 +220,8 @@ cifs_strtoUCS(__le16 *to, const char *from, int len,
 }
 
 /*
- * cifs_strndup_from_ucs - copy a string from wire format to the local codepage
+ * cifs_strndup_from_utf16 - copy a string from wire format to the local
+ * codepage
  * @src - source string
  * @maxlen - don't walk past this many bytes in the source string
  * @is_unicode - is this a unicode string?
@@ -231,19 +232,19 @@ cifs_strtoUCS(__le16 *to, const char *from, int len,
  * error.
  */
 char *
-cifs_strndup_from_ucs(const char *src, const int maxlen, const bool is_unicode,
-	     const struct nls_table *codepage)
+cifs_strndup_from_utf16(const char *src, const int maxlen,
+			const bool is_unicode, const struct nls_table *codepage)
 {
 	int len;
 	char *dst;
 
 	if (is_unicode) {
-		len = cifs_ucs2_bytes((__le16 *) src, maxlen, codepage);
+		len = cifs_utf16_bytes((__le16 *) src, maxlen, codepage);
 		len += nls_nullsize(codepage);
 		dst = kmalloc(len, GFP_KERNEL);
 		if (!dst)
 			return NULL;
-		cifs_from_ucs2(dst, (__le16 *) src, len, maxlen, codepage,
+		cifs_from_utf16(dst, (__le16 *) src, len, maxlen, codepage,
 			       false);
 	} else {
 		len = strnlen(src, maxlen);
@@ -264,7 +265,7 @@ cifs_strndup_from_ucs(const char *src, const int maxlen, const bool is_unicode,
  * names are little endian 16 bit Unicode on the wire
  */
 int
-cifsConvertToUCS(__le16 *target, const char *source, int srclen,
+cifsConvertToUTF16(__le16 *target, const char *source, int srclen,
 		 const struct nls_table *cp, int mapChars)
 {
 	int i, j, charlen;
@@ -273,7 +274,7 @@ cifsConvertToUCS(__le16 *target, const char *source, int srclen,
 	wchar_t tmp;
 
 	if (!mapChars)
-		return cifs_strtoUCS(target, source, PATH_MAX, cp);
+		return cifs_strtoUTF16(target, source, PATH_MAX, cp);
 
 	for (i = 0, j = 0; i < srclen; j++) {
 		src_char = source[i];
@@ -281,7 +282,7 @@ cifsConvertToUCS(__le16 *target, const char *source, int srclen,
 		switch (src_char) {
 		case 0:
 			put_unaligned(0, &target[j]);
-			goto ctoUCS_out;
+			goto ctoUTF16_out;
 		case ':':
 			dst_char = cpu_to_le16(UNI_COLON);
 			break;
@@ -326,7 +327,7 @@ cifsConvertToUCS(__le16 *target, const char *source, int srclen,
 		put_unaligned(dst_char, &target[j]);
 	}
 
-ctoUCS_out:
+ctoUTF16_out:
 	return i;
 }
 
diff --git a/fs/cifs/cifs_unicode.h b/fs/cifs/cifs_unicode.h
index 6d02fd560566..a513a546700b 100644
--- a/fs/cifs/cifs_unicode.h
+++ b/fs/cifs/cifs_unicode.h
@@ -74,16 +74,16 @@ extern const struct UniCaseRange CifsUniLowerRange[];
 #endif				/* UNIUPR_NOLOWER */
 
 #ifdef __KERNEL__
-int cifs_from_ucs2(char *to, const __le16 *from, int tolen, int fromlen,
-		   const struct nls_table *codepage, bool mapchar);
-int cifs_ucs2_bytes(const __le16 *from, int maxbytes,
-		    const struct nls_table *codepage);
-int cifs_strtoUCS(__le16 *, const char *, int, const struct nls_table *);
-char *cifs_strndup_from_ucs(const char *src, const int maxlen,
-			    const bool is_unicode,
-			    const struct nls_table *codepage);
-extern int cifsConvertToUCS(__le16 *target, const char *source, int maxlen,
-			const struct nls_table *cp, int mapChars);
+int cifs_from_utf16(char *to, const __le16 *from, int tolen, int fromlen,
+		    const struct nls_table *codepage, bool mapchar);
+int cifs_utf16_bytes(const __le16 *from, int maxbytes,
+		     const struct nls_table *codepage);
+int cifs_strtoUTF16(__le16 *, const char *, int, const struct nls_table *);
+char *cifs_strndup_from_utf16(const char *src, const int maxlen,
+			      const bool is_unicode,
+			      const struct nls_table *codepage);
+extern int cifsConvertToUTF16(__le16 *target, const char *source, int maxlen,
+			      const struct nls_table *cp, int mapChars);
 
 #endif
 
diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
index 72ddf23ef6f7..c1b254487388 100644
--- a/fs/cifs/cifsacl.c
+++ b/fs/cifs/cifsacl.c
@@ -909,6 +909,8 @@ static void parse_dacl(struct cifs_acl *pdacl, char *end_of_acl,
 		umode_t group_mask = S_IRWXG;
 		umode_t other_mask = S_IRWXU | S_IRWXG | S_IRWXO;
 
+		if (num_aces > ULONG_MAX / sizeof(struct cifs_ace *))
+			return;
 		ppace = kmalloc(num_aces * sizeof(struct cifs_ace *),
 				GFP_KERNEL);
 		if (!ppace) {
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index 5d9b9acc5fce..63c460e503b6 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -327,7 +327,7 @@ build_avpair_blob(struct cifs_ses *ses, const struct nls_table *nls_cp)
 	attrptr->type = cpu_to_le16(NTLMSSP_AV_NB_DOMAIN_NAME);
 	attrptr->length = cpu_to_le16(2 * dlen);
 	blobptr = (unsigned char *)attrptr + sizeof(struct ntlmssp2_name);
-	cifs_strtoUCS((__le16 *)blobptr, ses->domainName, dlen, nls_cp);
+	cifs_strtoUTF16((__le16 *)blobptr, ses->domainName, dlen, nls_cp);
 
 	return 0;
 }
@@ -376,7 +376,7 @@ find_domain_name(struct cifs_ses *ses, const struct nls_table *nls_cp)
 					kmalloc(attrsize + 1, GFP_KERNEL);
 				if (!ses->domainName)
 						return -ENOMEM;
-				cifs_from_ucs2(ses->domainName,
+				cifs_from_utf16(ses->domainName,
 					(__le16 *)blobptr, attrsize, attrsize,
 					nls_cp, false);
 				break;
@@ -420,15 +420,20 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
 	}
 
 	/* convert ses->user_name to unicode and uppercase */
-	len = strlen(ses->user_name);
+	len = ses->user_name ? strlen(ses->user_name) : 0;
 	user = kmalloc(2 + (len * 2), GFP_KERNEL);
 	if (user == NULL) {
 		cERROR(1, "calc_ntlmv2_hash: user mem alloc failure\n");
 		rc = -ENOMEM;
 		return rc;
 	}
-	len = cifs_strtoUCS((__le16 *)user, ses->user_name, len, nls_cp);
-	UniStrupr(user);
+
+	if (len) {
+		len = cifs_strtoUTF16((__le16 *)user, ses->user_name, len, nls_cp);
+		UniStrupr(user);
+	} else {
+		memset(user, '\0', 2);
+	}
 
 	rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
 				(char *)user, 2 * len);
@@ -448,8 +453,8 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
 			rc = -ENOMEM;
 			return rc;
 		}
-		len = cifs_strtoUCS((__le16 *)domain, ses->domainName, len,
-					nls_cp);
+		len = cifs_strtoUTF16((__le16 *)domain, ses->domainName, len,
+				      nls_cp);
 		rc =
 		crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
 					(char *)domain, 2 * len);
@@ -468,7 +473,7 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
 			rc = -ENOMEM;
 			return rc;
 		}
-		len = cifs_strtoUCS((__le16 *)server, ses->serverName, len,
+		len = cifs_strtoUTF16((__le16 *)server, ses->serverName, len,
 					nls_cp);
 		rc =
 		crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index ba53c1c6c6cc..76e7d8b6da17 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -879,6 +879,8 @@ require use of the stronger protocol */
 #define   CIFSSEC_MASK          0xB70B7 /* current flags supported if weak */
 #endif /* UPCALL */
 #else /* do not allow weak pw hash */
+#define   CIFSSEC_MUST_LANMAN	0
+#define   CIFSSEC_MUST_PLNTXT	0
 #ifdef CONFIG_CIFS_UPCALL
 #define   CIFSSEC_MASK          0x8F08F /* flags supported if no weak allowed */
 #else
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 6600aa2d2ef3..8b7794c31591 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -821,8 +821,8 @@ PsxDelete:
 
 	if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
 		name_len =
-		    cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
-				     PATH_MAX, nls_codepage, remap);
+		    cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName,
+				       PATH_MAX, nls_codepage, remap);
 		name_len++;	/* trailing null */
 		name_len *= 2;
 	} else { /* BB add path length overrun check */
@@ -893,8 +893,8 @@ DelFileRetry: