Merge branch 'linus' into sched/core

Resolve cherry-picking conflicts:

Conflicts:
	mm/huge_memory.c
	mm/memory.c
	mm/mprotect.c

See this upstream merge commit for more details:

  52469b4fcd4f Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Signed-off-by: Ingo Molnar <mingo@kernel.org>

31 files changed, 168 insertions, 76 deletions

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 4ae17ed13b3..62176ad8984 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1561,8 +1561,9 @@ int btrfs_insert_fs_root(struct btrfs_fs_info *fs_info,
 	return ret;
 }
 
-struct btrfs_root *btrfs_read_fs_root_no_name(struct btrfs_fs_info *fs_info,
-					      struct btrfs_key *location)
+struct btrfs_root *btrfs_get_fs_root(struct btrfs_fs_info *fs_info,
+				     struct btrfs_key *location,
+				     bool check_ref)
 {
 	struct btrfs_root *root;
 	int ret;
@@ -1586,7 +1587,7 @@ struct btrfs_root *btrfs_read_fs_root_no_name(struct btrfs_fs_info *fs_info,
 again:
 	root = btrfs_lookup_fs_root(fs_info, location->objectid);
 	if (root) {
-		if (btrfs_root_refs(&root->root_item) == 0)
+		if (check_ref && btrfs_root_refs(&root->root_item) == 0)
 			return ERR_PTR(-ENOENT);
 		return root;
 	}
@@ -1595,7 +1596,7 @@ again:
 	if (IS_ERR(root))
 		return root;
 
-	if (btrfs_root_refs(&root->root_item) == 0) {
+	if (check_ref && btrfs_root_refs(&root->root_item) == 0) {
 		ret = -ENOENT;
 		goto fail;
 	}
diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h
index b71acd6e1e5..5ce2a7da8b1 100644
--- a/fs/btrfs/disk-io.h
+++ b/fs/btrfs/disk-io.h
@@ -68,8 +68,17 @@ struct btrfs_root *btrfs_read_fs_root(struct btrfs_root *tree_root,
 int btrfs_init_fs_root(struct btrfs_root *root);
 int btrfs_insert_fs_root(struct btrfs_fs_info *fs_info,
 			 struct btrfs_root *root);
-struct btrfs_root *btrfs_read_fs_root_no_name(struct btrfs_fs_info *fs_info,
-					      struct btrfs_key *location);
+
+struct btrfs_root *btrfs_get_fs_root(struct btrfs_fs_info *fs_info,
+				     struct btrfs_key *key,
+				     bool check_ref);
+static inline struct btrfs_root *
+btrfs_read_fs_root_no_name(struct btrfs_fs_info *fs_info,
+			   struct btrfs_key *location)
+{
+	return btrfs_get_fs_root(fs_info, location, true);
+}
+
 int btrfs_cleanup_fs_roots(struct btrfs_fs_info *fs_info);
 void btrfs_btree_balance_dirty(struct btrfs_root *root);
 void btrfs_btree_balance_dirty_nodelay(struct btrfs_root *root);
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 22bda32acb8..51731b76900 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -1490,10 +1490,8 @@ static noinline u64 find_delalloc_range(struct extent_io_tree *tree,
 		cur_start = state->end + 1;
 		node = rb_next(node);
 		total_bytes += state->end - state->start + 1;
-		if (total_bytes >= max_bytes) {
-			*end = *start + max_bytes - 1;
+		if (total_bytes >= max_bytes)
 			break;
-		}
 		if (!node)
 			break;
 	}
@@ -1635,10 +1633,9 @@ again:
 
 	/*
 	 * make sure to limit the number of pages we try to lock down
-	 * if we're looping.
 	 */
-	if (delalloc_end + 1 - delalloc_start > max_bytes && loops)
-		delalloc_end = delalloc_start + PAGE_CACHE_SIZE - 1;
+	if (delalloc_end + 1 - delalloc_start > max_bytes)
+		delalloc_end = delalloc_start + max_bytes - 1;
 
 	/* step two, lock all the pages after the page that has start */
 	ret = lock_delalloc_pages(inode, locked_page,
@@ -1649,8 +1646,7 @@ again:
 		 */
 		free_extent_state(cached_state);
 		if (!loops) {
-			unsigned long offset = (*start) & (PAGE_CACHE_SIZE - 1);
-			max_bytes = PAGE_CACHE_SIZE - offset;
+			max_bytes = PAGE_CACHE_SIZE;
 			loops = 1;
 			goto again;
 		} else {
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 22ebc13b6c9..51e3afa7835 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -6437,6 +6437,7 @@ noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len,
 
 	if (btrfs_extent_readonly(root, disk_bytenr))
 		goto out;
+	btrfs_release_path(path);
 
 	/*
 	 * look for other files referencing this extent, if we
@@ -7986,7 +7987,7 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 
 
 	/* check for collisions, even if the  name isn't there */
-	ret = btrfs_check_dir_item_collision(root, new_dir->i_ino,
+	ret = btrfs_check_dir_item_collision(dest, new_dir->i_ino,
 			     new_dentry->d_name.name,
 			     new_dentry->d_name.len);
 
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index a5a26320503..4a355726151 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -588,7 +588,7 @@ static struct btrfs_root *read_fs_root(struct btrfs_fs_info *fs_info,
 	else
 		key.offset = (u64)-1;
 
-	return btrfs_read_fs_root_no_name(fs_info, &key);
+	return btrfs_get_fs_root(fs_info, &key, false);
 }
 
 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
diff --git a/fs/btrfs/root-tree.c b/fs/btrfs/root-tree.c
index 0b1f4ef8db9..ec71ea44d2b 100644
--- a/fs/btrfs/root-tree.c
+++ b/fs/btrfs/root-tree.c
@@ -299,11 +299,6 @@ int btrfs_find_orphan_roots(struct btrfs_root *tree_root)
 			continue;
 		}
 
-		if (btrfs_root_refs(&root->root_item) == 0) {
-			btrfs_add_dead_root(root);
-			continue;
-		}
-
 		err = btrfs_init_fs_root(root);
 		if (err) {
 			btrfs_free_fs_root(root);
@@ -318,6 +313,9 @@ int btrfs_find_orphan_roots(struct btrfs_root *tree_root)
 			btrfs_free_fs_root(root);
 			break;
 		}
+
+		if (btrfs_root_refs(&root->root_item) == 0)
+			btrfs_add_dead_root(root);
 	}
 
 	btrfs_free_path(path);
diff --git a/fs/buffer.c b/fs/buffer.c
index 4d7433534f5..6024877335c 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -1005,9 +1005,19 @@ grow_dev_page(struct block_device *bdev, sector_t block,
 	struct buffer_head *bh;
 	sector_t end_block;
 	int ret = 0;		/* Will call free_more_memory() */
+	gfp_t gfp_mask;
 
-	page = find_or_create_page(inode->i_mapping, index,
-		(mapping_gfp_mask(inode->i_mapping) & ~__GFP_FS)|__GFP_MOVABLE);
+	gfp_mask = mapping_gfp_mask(inode->i_mapping) & ~__GFP_FS;
+	gfp_mask |= __GFP_MOVABLE;
+	/*
+	 * XXX: __getblk_slow() can not really deal with failure and
+	 * will endlessly loop on improvised global reclaim.  Prefer
+	 * looping in the allocator rather than here, at least that
+	 * code knows what it's doing.
+	 */
+	gfp_mask |= __GFP_NOFAIL;
+
+	page = find_or_create_page(inode->i_mapping, index, gfp_mask);
 	if (!page)
 		return ret;
 
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index a16b4e58bcc..77fc5e18107 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -120,14 +120,16 @@ cifs_read_super(struct super_block *sb)
 {
 	struct inode *inode;
 	struct cifs_sb_info *cifs_sb;
+	struct cifs_tcon *tcon;
 	int rc = 0;
 
 	cifs_sb = CIFS_SB(sb);
+	tcon = cifs_sb_master_tcon(cifs_sb);
 
 	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIXACL)
 		sb->s_flags |= MS_POSIXACL;
 
-	if (cifs_sb_master_tcon(cifs_sb)->ses->capabilities & CAP_LARGE_FILES)
+	if (tcon->ses->capabilities & tcon->ses->server->vals->cap_large_files)
 		sb->s_maxbytes = MAX_LFS_FILESIZE;
 	else
 		sb->s_maxbytes = MAX_NON_LFS;
@@ -147,7 +149,7 @@ cifs_read_super(struct super_block *sb)
 		goto out_no_root;
 	}
 
-	if (cifs_sb_master_tcon(cifs_sb)->nocase)
+	if (tcon->nocase)
 		sb->s_d_op = &cifs_ci_dentry_ops;
 	else
 		sb->s_d_op = &cifs_dentry_ops;
diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h
index a630475e421..08f9dfb1a89 100644
--- a/fs/cifs/cifspdu.h
+++ b/fs/cifs/cifspdu.h
@@ -1491,15 +1491,30 @@ struct file_notify_information {
 	__u8  FileName[0];
 } __attribute__((packed));
 
-struct reparse_data {
-	__u32	ReparseTag;
-	__u16	ReparseDataLength;
+/* For IO_REPARSE_TAG_SYMLINK */
+struct reparse_symlink_data {
+	__le32	ReparseTag;
+	__le16	ReparseDataLength;
 	__u16	Reserved;
-	__u16	SubstituteNameOffset;
-	__u16	SubstituteNameLength;
-	__u16	PrintNameOffset;
-	__u16	PrintNameLength;
-	__u32	Flags;
+	__le16	SubstituteNameOffset;
+	__le16	SubstituteNameLength;
+	__le16	PrintNameOffset;
+	__le16	PrintNameLength;
+	__le32	Flags;
+	char	PathBuffer[0];
+} __attribute__((packed));
+
+/* For IO_REPARSE_TAG_NFS */
+#define NFS_SPECFILE_LNK	0x00000000014B4E4C
+#define NFS_SPECFILE_CHR	0x0000000000524843
+#define NFS_SPECFILE_BLK	0x00000000004B4C42
+#define NFS_SPECFILE_FIFO	0x000000004F464946
+#define NFS_SPECFILE_SOCK	0x000000004B434F53
+struct reparse_posix_data {
+	__le32	ReparseTag;
+	__le16	ReparseDataLength;
+	__u16	Reserved;
+	__le64	InodeType; /* LNK, FIFO, CHR etc. */
 	char	PathBuffer[0];
 } __attribute__((packed));
 
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 4baf35949b5..ccd31ab815d 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -3088,7 +3088,8 @@ CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
 	bool is_unicode;
 	unsigned int sub_len;
 	char *sub_start;
-	struct reparse_data *reparse_buf;
+	struct reparse_symlink_data *reparse_buf;
+	struct reparse_posix_data *posix_buf;
 	__u32 data_offset, data_count;
 	char *end_of_smb;
 
@@ -3137,20 +3138,47 @@ CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
 		goto qreparse_out;
 	}
 	end_of_smb = 2 + get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount;
-	reparse_buf = (struct reparse_data *)
+	reparse_buf = (struct reparse_symlink_data *)
 				((char *)&pSMBr->hdr.Protocol + data_offset);
 	if ((char *)reparse_buf >= end_of_smb) {
 		rc = -EIO;
 		goto qreparse_out;
 	}
-	if ((reparse_buf->PathBuffer + reparse_buf->PrintNameOffset +
-				reparse_buf->PrintNameLength) > end_of_smb) {
+	if (reparse_buf->ReparseTag == cpu_to_le32(IO_REPARSE_TAG_NFS)) {
+		cifs_dbg(FYI, "NFS style reparse tag\n");
+		posix_buf =  (struct reparse_posix_data *)reparse_buf;
+
+		if (posix_buf->InodeType != cpu_to_le64(NFS_SPECFILE_LNK)) {
+			cifs_dbg(FYI, "unsupported file type 0x%llx\n",
+				 le64_to_cpu(posix_buf->InodeType));
+			rc = -EOPNOTSUPP;
+			goto qreparse_out;
+		}
+		is_unicode = true;
+		sub_len = le16_to_cpu(reparse_buf->ReparseDataLength);
+		if (posix_buf->PathBuffer + sub_len > end_of_smb) {
+			cifs_dbg(FYI, "reparse buf beyond SMB\n");
+			rc = -EIO;
+			goto qreparse_out;
+		}
+		*symlinkinfo = cifs_strndup_from_utf16(posix_buf->PathBuffer,
+				sub_len, is_unicode, nls_codepage);
+		goto qreparse_out;
+	} else if (reparse_buf->ReparseTag !=
+			cpu_to_le32(IO_REPARSE_TAG_SYMLINK)) {
+		rc = -EOPNOTSUPP;
+		goto qreparse_out;
+	}
+
+	/* Reparse tag is NTFS symlink */
+	sub_start = le16_to_cpu(reparse_buf->SubstituteNameOffset) +
+				reparse_buf->PathBuffer;
+	sub_len = le16_to_cpu(reparse_buf->SubstituteNameLength);
+	if (sub_start + sub_len > end_of_smb) {
 		cifs_dbg(FYI, "reparse buf beyond SMB\n");
 		rc = -EIO;
 		goto qreparse_out;
 	}
-	sub_start = reparse_buf->SubstituteNameOffset + reparse_buf->PathBuffer;
-	sub_len = reparse_buf->SubstituteNameLength;
 	if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
 		is_unicode = true;
 	else
diff --git a/fs/cifs/netmisc.c b/fs/cifs/netmisc.c
index af847e1cf1c..651a5279607 100644
--- a/fs/cifs/netmisc.c
+++ b/fs/cifs/netmisc.c
@@ -780,7 +780,9 @@ static const struct {
 	ERRDOS, ERRnoaccess, 0xc0000290}, {
 	ERRDOS, ERRbadfunc, 0xc000029c}, {
 	ERRDOS, ERRsymlink, NT_STATUS_STOPPED_ON_SYMLINK}, {
-	ERRDOS, ERRinvlevel, 0x007c0001}, };
+	ERRDOS, ERRinvlevel, 0x007c0001}, {
+	0, 0, 0 }
+};
 
 /*****************************************************************************
  Print an error message from the status code
diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
index 352358de1d7..e87387dbf39 100644
--- a/fs/cifs/sess.c
+++ b/fs/cifs/sess.c
@@ -500,9 +500,9 @@ select_sectype(struct TCP_Server_Info *server, enum securityEnum requested)
 				return NTLMv2;
 			if (global_secflags & CIFSSEC_MAY_NTLM)
 				return NTLM;
-			/* Fallthrough */
 		default:
-			return Unspecified;
+			/* Fallthrough to attempt LANMAN authentication next */
+			break;
 		}
 	case CIFS_NEGFLAVOR_LANMAN:
 		switch (requested) {
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index eba0efde66d..edccb525246 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -687,6 +687,10 @@ SMB2_logoff(const unsigned int xid, struct cifs_ses *ses)
 	else
 		return -EIO;
 
+	/* no need to send SMB logoff if uid already closed due to reconnect */
+	if (ses->need_reconnect)
+		goto smb2_session_already_dead;
+
 	rc = small_smb2_init(SMB2_LOGOFF, NULL, (void **) &req);
 	if (rc)
 		return rc;
@@ -701,6 +705,8 @@ SMB2_logoff(const unsigned int xid, struct cifs_ses *ses)
 	 * No tcon so can't do
 	 * cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_fail[SMB2...]);
 	 */
+
+smb2_session_already_dead:
 	return rc;
 }
 
diff --git a/fs/cifs/smbfsctl.h b/fs/cifs/smbfsctl.h
index d952ee48f4d..a4b2391fe66 100644
--- a/fs/cifs/smbfsctl.h
+++ b/fs/cifs/smbfsctl.h
@@ -97,9 +97,23 @@
 #define FSCTL_QUERY_NETWORK_INTERFACE_INFO 0x001401FC /* BB add struct */
 #define FSCTL_SRV_READ_HASH          0x001441BB /* BB add struct */
 
+/* See FSCC 2.1.2.5 */
 #define IO_REPARSE_TAG_MOUNT_POINT   0xA0000003
 #define IO_REPARSE_TAG_HSM           0xC0000004
 #define IO_REPARSE_TAG_SIS           0x80000007
+#define IO_REPARSE_TAG_HSM2          0x80000006
+#define IO_REPARSE_TAG_DRIVER_EXTENDER 0x80000005
+/* Used by the DFS filter. See MS-DFSC */
+#define IO_REPARSE_TAG_DFS           0x8000000A
+/* Used by the DFS filter See MS-DFSC */
+#define IO_REPARSE_TAG_DFSR          0x80000012
+#define IO_REPARSE_TAG_FILTER_MANAGER 0x8000000B
+/* See section MS-FSCC 2.1.2.4 */
+#define IO_REPARSE_TAG_SYMLINK       0xA000000C
+#define IO_REPARSE_TAG_DEDUP         0x80000013
+#define IO_REPARSE_APPXSTREAM	     0xC0000014
+/* NFS symlinks, Win 8/SMB3 and later */
+#define IO_REPARSE_TAG_NFS           0x80000014
 
 /* fsctl flags */
 /* If Flags is set to this value, the request is an FSCTL not ioctl request */
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 6fdcb1b4a10..800b938e406 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -410,8 +410,13 @@ static int
 wait_for_free_request(struct TCP_Server_Info *server, const int timeout,
 		      const int optype)
 {
-	return wait_for_free_credits(server, timeout,
-				server->ops->get_credits_field(server, optype));
+	int *val;
+
+	val = server->ops->get_credits_field(server, optype);
+	/* Since an echo is already inflight, no need to wait to send another */
+	if (*val <= 0 && optype == CIFS_ECHO_OP)
+		return -EAGAIN;
+	return wait_for_free_credits(server, timeout, val);
 }
 
 static int allocate_mid(struct cifs_ses *ses, struct smb_hdr *in_buf,
diff --git a/fs/dcache.c b/fs/dcache.c
index 41000305d71..20532cb0b06 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1331,14 +1331,6 @@ rename_retry:
  * list is non-empty and continue searching.
  */
 
-/**
- * have_submounts - check for mounts over a dentry
- * @parent: dentry to check.
- *
- * Return true if the parent or its subdirectories contain
- * a mount point
- */
-
 static enum d_walk_ret check_mount(void *data, struct dentry *dentry)
 {
 	int *ret = data;
@@ -1349,6 +1341,13 @@ static enum d_walk_ret check_mount(void *data, struct dentry *dentry)
 	return D_WALK_CONTINUE;
 }
 
+/**
+ * have_submounts - check for mounts over a dentry
+ * @parent: dentry to check.
+ *
+ * Return true if the parent or its subdirectories contain
+ * a mount point
+ */
 int have_submounts(struct dentry *parent)
 {
 	int ret = 0;
diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c
index c88e355f763..000eae2782b 100644
--- a/fs/ecryptfs/crypto.c
+++ b/fs/ecryptfs/crypto.c
@@ -408,7 +408,7 @@ static loff_t lower_offset_for_page(struct ecryptfs_crypt_stat *crypt_stat,
 				    struct page *page)
 {
 	return ecryptfs_lower_header_size(crypt_stat) +
-	       (page->index << PAGE_CACHE_SHIFT);
+	       ((loff_t)page->index << PAGE_CACHE_SHIFT);
 }
 
 /**
diff --git a/fs/ecryptfs/keystore.c b/fs/ecryptfs/keystore.c
index 7d52806c211..4725a07f003 100644
--- a/fs/ecryptfs/keystore.c
+++ b/fs/ecryptfs/keystore.c
@@ -1149,7 +1149,7 @@ decrypt_pki_encrypted_session_key(struct ecryptfs_auth_tok *auth_tok,
 	struct ecryptfs_msg_ctx *msg_ctx;
 	struct ecryptfs_message *msg = NULL;
 	char *auth_tok_sig;
-	char *payload;
+	char *payload = NULL;
 	size_t payload_len = 0;
 	int rc;
 
@@ -1203,6 +1203,7 @@ decrypt_pki_encrypted_session_key(struct ecryptfs_auth_tok *auth_tok,
 	}
 out:
 	kfree(msg);
+	kfree(payload);
 	return rc;
 }
 
diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index 473e09da7d0..810c28fb8c3 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -34,7 +34,6 @@
 #include <linux/mutex.h>
 #include <linux/anon_inodes.h>
 #include <linux/device.h>
-#include <linux/freezer.h>
 #include <asm/uaccess.h>
 #include <asm/io.h>
 #include <asm/mman.h>
@@ -1605,8 +1604,7 @@ fetch_events:
 			}
 
 			spin_unlock_irqrestore(&ep->lock, flags);
-			if (!freezable_schedule_hrtimeout_range(to, slack,
-								HRTIMER_MODE_ABS))
+			if (!schedule_hrtimeout_range(to, slack, HRTIMER_MODE_ABS))
 				timed_out = 1;
 
 			spin_lock_irqsave(&ep->lock, flags);
diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c
index 1194b1f0f83..f8cde46de9c 100644
--- a/fs/ext3/namei.c
+++ b/fs/ext3/namei.c
@@ -1783,7 +1783,7 @@ retry:
 		d_tmpfile(dentry, inode);
 		err = ext3_orphan_add(handle, inode);
 		if (err)
-			goto err_drop_inode;
+			goto err_unlock_inode;
 		mark_inode_dirty(inode);
 		unlock_new_inode(inode);
 	}
@@ -1791,10 +1791,9 @@ retry:
 	if (err == -ENOSPC && ext3_should_retry_alloc(dir->i_sb, &retries))
 		goto retry;
 	return err;
-err_drop_inode:
+err_unlock_inode:
 	ext3_journal_stop(handle);
 	unlock_new_inode(inode);
-	iput(inode);
 	return err;
 }
 
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 0d424d7ac02..e274e9c1171 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -2563,7 +2563,7 @@ retry:
 			break;
 	}
 	blk_finish_plug(&plug);
-	if (!ret && !cycled) {
+	if (!ret && !cycled && wbc->nr_to_write > 0) {
 		cycled = 1;
 		mpd.last_page = writeback_index - 1;
 		mpd.first_page = 0;
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 1bec5a5c1e4..5a0408d7b11 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -2319,7 +2319,7 @@ retry:
 		d_tmpfile(dentry, inode);
 		err = ext4_orphan_add(handle, inode);
 		if (err)
-			goto err_drop_inode;
+			goto err_unlock_inode;
 		mark_inode_dirty(inode);
 		unlock_new_inode(inode);
 	}
@@ -2328,10 +2328,9 @@ retry:
 	if (err == -ENOSPC && ext4_should_retry_alloc(dir->i_sb, &retries))
 		goto retry;
 	return err;
-err_drop_inode:
+err_unlock_inode:
 	ext4_journal_stop(handle);
 	unlock_new_inode(inode);
-	iput(inode);
 	return err;
 }
 
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index c081e34f717..03e9bebba19 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -1350,6 +1350,8 @@ retry:
 				    s_min_extra_isize) {
 					tried_min_extra_isize++;
 					new_extra_isize = s_min_extra_isize;
+					kfree(is); is = NULL;
+					kfree(bs); bs = NULL;
 					goto retry;
 				}
 				error = -1;
diff --git a/fs/file_table.c b/fs/file_table.c
index abdd15ad13c..e900ca51863 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -297,7 +297,7 @@ void flush_delayed_fput(void)
 	delayed_fput(NULL);
 }
 
-static DECLARE_WORK(delayed_fput_work, delayed_fput);
+static DECLARE_DELAYED_WORK(delayed_fput_work, delayed_fput);
 
 void fput(struct file *file)
 {
@@ -317,7 +317,7 @@ void fput(struct file *file)
 		}
 
 		if (llist_add(&file->f_u.fu_llist, &delayed_fput_list))
-			schedule_work(&delayed_fput_work);
+			schedule_delayed_work(&delayed_fput_work, 1);
 	}
 }
 
diff --git a/fs/jfs/jfs_inode.c b/fs/jfs/jfs_inode.c
index c1a3e603279..7f464c513ba 100644
--- a/fs/jfs/jfs_inode.c
+++ b/fs/jfs/jfs_inode.c
@@ -95,7 +95,7 @@ struct inode *ialloc(struct inode *parent, umode_t mode)
 
 	if (insert_inode_locked(inode) < 0) {
 		rc = -EINVAL;
-		goto fail_unlock;
+		goto fail_put;
 	}
 
 	inode_init_owner(inode, parent, mode);
@@ -156,7 +156,6 @@ struct inode *ialloc(struct inode *parent, umode_t mode)
 fail_drop:
 	dquot_drop(inode);
 	inode->i_flags |= S_NOQUOTA;
-fail_unlock:
 	clear_nlink(inode);
 	unlock_new_inode(inode);
 fail_put:
diff --git a/fs/namei.c b/fs/namei.c
index 645268f23eb..caa28051e19 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2294,10 +2294,11 @@ out:
  * path_mountpoint - look up a path to be umounted
  * @dfd:	directory file descriptor to start walk from
  * @name:	full pathname to walk
+ * @path:	pointer to container for result
  * @flags:	lookup flags
  *
  * Look up the given name, but don't attempt to revalidate the last component.
- * Returns 0 and "path" will be valid on success; Retuns error otherwise.
+ * Returns 0 and "path" will be valid on success; Returns error otherwise.
  */
 static int
 path_mountpoint(int dfd, const char *name, struct path *path, unsigned int flags)
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 9f8ef9b7674..8eaa1ba793f 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -288,10 +288,14 @@ static int proc_reg_mmap(struct file *file, struct vm_area_struct *vma)
 static unsigned long proc_reg_get_unmapped_area(struct file *file, unsigned long orig_addr, unsigned long len, unsigned long pgoff, unsigned long flags)
 {
 	struct proc_dir_entry *pde = PDE(file_inode(file));
-	int rv = -EIO;
-	unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
+	unsigned long rv = -EIO;
+	unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long) = NULL;
 	if (use_pde(pde)) {
-		get_unmapped_area = pde->proc_fops->get_unmapped_area;
+#ifdef CONFIG_MMU
+		get_unmapped_area = current->mm->get_unmapped_area;
+#endif
+		if (pde->proc_fops->get_unmapped_area)
+			get_unmapped_area = pde->proc_fops->get_unmapped_area;
 		if (get_unmapped_area)
 			rv = get_unmapped_area(file, orig_addr, len, pgoff, flags);
 		unuse_pde(pde);
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 7366e9d63ce..390bdab01c3 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -941,6 +941,8 @@ static void pte_to_pagemap_entry(pagemap_entry_t *pme, struct pagemapread *pm,
 		frame = pte_pfn(pte);
 		flags = PM_PRESENT;
 		page = vm_normal_page(vma, addr, pte);
+		if (pte_soft_dirty(pte))
+			flags2 |= __PM_SOFT_DIRTY;
 	} else if (is_swap_pte(pte)) {
 		swp_entry_t entry;
 		if (pte_swp_soft_dirty(pte))
@@ -960,7 +962,7 @@ static void pte_to_pagemap_entry(pagemap_entry_t *pme, struct pagemapread *pm,
 
 	if (page && !PageAnon(page))
 		flags |= PM_FILE;
-	if ((vma->vm_flags & VM_SOFTDIRTY) || pte_soft_dirty(pte))
+	if ((vma->vm_flags & VM_SOFTDIRTY))
 		flags2 |= __PM_SOFT_DIRTY;
 
 	*pme = make_pme(PM_PFRAME(frame) | PM_STATUS2(pm->v2, flags2) | flags);
diff --git a/fs/select.c b/fs/select.c
index 35d4adc749d..dfd5cb18c01 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -238,8 +238,7 @@ int poll_schedule_timeout(struct poll_wqueues *pwq, int state,
 
 	set_current_state(state);
 	if (!pwq->triggered)
-		rc = freezable_schedule_hrtimeout_range(expires, slack,
-							HRTIMER_MODE_ABS);
+		rc = schedule_hrtimeout_range(expires, slack, HRTIMER_MODE_ABS);
 	__set_current_state(TASK_RUNNING);
 
 	/*
diff --git a/fs/seq_file.c b/fs/seq_file.c
index 3135c2525c7..a290157265e 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -328,6 +328,8 @@ loff_t seq_lseek(struct file *file, loff_t offset, int whence)
 				m->read_pos = offset;
 				retval = file->f_pos = offset;
 			}
+		} else {
+			file->f_pos = offset;
 		}
 	}
 	file->f_version = m->version;
diff --git a/fs/statfs.c b/fs/statfs.c
index c219e733f55..083dc0ac914 100644
--- a/fs/statfs.c
+++ b/fs/statfs.c
@@ -94,7 +94,7 @@ retry:
 
 int fd_statfs(int fd, struct kstatfs *st)
 {
-	struct fd f = fdget(fd);
+	struct fd f = fdget_raw(fd);
 	int error = -EBADF;
 	if (f.file) {
 		error = vfs_statfs(&f.file->f_path, st);