Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 updates from Ted Ts'o:
 "Lots of bug fixes and cleanups"

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (40 commits)
  ext4: remove unused variable
  ext4: use journal inode to determine journal overhead
  ext4: create function to read journal inode
  ext4: unmap metadata when zeroing blocks
  ext4: remove plugging from ext4_file_write_iter()
  ext4: allow unlocked direct IO when pages are cached
  ext4: require encryption feature for EXT4_IOC_SET_ENCRYPTION_POLICY
  fscrypto: use standard macros to compute length of fname ciphertext
  ext4: do not unnecessarily null-terminate encrypted symlink data
  ext4: release bh in make_indexed_dir
  ext4: Allow parallel DIO reads
  ext4: allow DAX writeback for hole punch
  jbd2: fix lockdep annotation in add_transaction_credits()
  blockgroup_lock.h: simplify definition of NR_BG_LOCKS
  blockgroup_lock.h: remove debris from bgl_lock_ptr() conversion
  fscrypto: make filename crypto functions return 0 on success
  fscrypto: rename completion callbacks to reflect usage
  fscrypto: remove unnecessary includes
  fscrypto: improved validation when loading inode encryption metadata
  ext4: fix memory leak when symlink decryption fails
  ...

14 files changed, 372 insertions, 310 deletions

diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
index 67415e0..e8b3650 100644
--- a/fs/ext4/dir.c
+++ b/fs/ext4/dir.c
@@ -260,11 +260,12 @@ static int ext4_readdir(struct file *file, struct dir_context *ctx)
 					/* Directory is encrypted */
 					err = fscrypt_fname_disk_to_usr(inode,
 						0, 0, &de_name, &fstr);
+					de_name = fstr;
 					fstr.len = save_len;
-					if (err < 0)
+					if (err)
 						goto errout;
 					if (!dir_emit(ctx,
-					    fstr.name, err,
+					    de_name.name, de_name.len,
 					    le32_to_cpu(de->inode),
 					    get_dtype(sb, de->file_type)))
 						goto done;
@@ -627,7 +628,7 @@ int ext4_check_all_de(struct inode *dir, struct buffer_head *bh, void *buf,
 		      int buf_size)
 {
 	struct ext4_dir_entry_2 *de;
-	int nlen, rlen;
+	int rlen;
 	unsigned int offset = 0;
 	char *top;
 
@@ -637,7 +638,6 @@ int ext4_check_all_de(struct inode *dir, struct buffer_head *bh, void *buf,
 		if (ext4_check_dir_entry(dir, NULL, de, bh,
 					 buf, buf_size, offset))
 			return -EFSCORRUPTED;
-		nlen = EXT4_DIR_REC_LEN(de->name_len);
 		rlen = ext4_rec_len_from_disk(de->rec_len, buf_size);
 		de = (struct ext4_dir_entry_2 *)((char *)de + rlen);
 		offset += rlen;
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index ea31931..282a51b 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -262,6 +262,9 @@ struct ext4_io_submit {
 				 (s)->s_first_ino)
 #endif
 #define EXT4_BLOCK_ALIGN(size, blkbits)		ALIGN((size), (1 << (blkbits)))
+#define EXT4_MAX_BLOCKS(size, offset, blkbits) \
+	((EXT4_BLOCK_ALIGN(size + offset, blkbits) >> blkbits) - (offset >> \
+								  blkbits))
 
 /* Translate a block number to a cluster number */
 #define EXT4_B2C(sbi, blk)	((blk) >> (sbi)->s_cluster_bits)
@@ -1117,9 +1120,15 @@ struct ext4_inode_info {
 #define EXT4_MOUNT_POSIX_ACL		0x08000	/* POSIX Access Control Lists */
 #define EXT4_MOUNT_NO_AUTO_DA_ALLOC	0x10000	/* No auto delalloc mapping */
 #define EXT4_MOUNT_BARRIER		0x20000 /* Use block barriers */
-#define EXT4_MOUNT_QUOTA		0x80000 /* Some quota option set */
-#define EXT4_MOUNT_USRQUOTA		0x100000 /* "old" user quota */
-#define EXT4_MOUNT_GRPQUOTA		0x200000 /* "old" group quota */
+#define EXT4_MOUNT_QUOTA		0x40000 /* Some quota option set */
+#define EXT4_MOUNT_USRQUOTA		0x80000 /* "old" user quota,
+						 * enable enforcement for hidden
+						 * quota files */
+#define EXT4_MOUNT_GRPQUOTA		0x100000 /* "old" group quota, enable
+						  * enforcement for hidden quota
+						  * files */
+#define EXT4_MOUNT_PRJQUOTA		0x200000 /* Enable project quota
+						  * enforcement */
 #define EXT4_MOUNT_DIOREAD_NOLOCK	0x400000 /* Enable support for dio read nolocking */
 #define EXT4_MOUNT_JOURNAL_CHECKSUM	0x800000 /* Journal checksums */
 #define EXT4_MOUNT_JOURNAL_ASYNC_COMMIT	0x1000000 /* Journal Async Commit */
@@ -1636,26 +1645,6 @@ static inline void ext4_clear_state_flags(struct ext4_inode_info *ei)
  * Feature set definitions
  */
 
-/* Use the ext4_{has,set,clear}_feature_* helpers; these will be removed */
-#define EXT4_HAS_COMPAT_FEATURE(sb,mask)			\
-	((EXT4_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask)) != 0)
-#define EXT4_HAS_RO_COMPAT_FEATURE(sb,mask)			\
-	((EXT4_SB(sb)->s_es->s_feature_ro_compat & cpu_to_le32(mask)) != 0)
-#define EXT4_HAS_INCOMPAT_FEATURE(sb,mask)			\
-	((EXT4_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask)) != 0)
-#define EXT4_SET_COMPAT_FEATURE(sb,mask)			\
-	EXT4_SB(sb)->s_es->s_feature_compat |= cpu_to_le32(mask)
-#define EXT4_SET_RO_COMPAT_FEATURE(sb,mask)			\
-	EXT4_SB(sb)->s_es->s_feature_ro_compat |= cpu_to_le32(mask)
-#define EXT4_SET_INCOMPAT_FEATURE(sb,mask)			\
-	EXT4_SB(sb)->s_es->s_feature_incompat |= cpu_to_le32(mask)
-#define EXT4_CLEAR_COMPAT_FEATURE(sb,mask)			\
-	EXT4_SB(sb)->s_es->s_feature_compat &= ~cpu_to_le32(mask)
-#define EXT4_CLEAR_RO_COMPAT_FEATURE(sb,mask)			\
-	EXT4_SB(sb)->s_es->s_feature_ro_compat &= ~cpu_to_le32(mask)
-#define EXT4_CLEAR_INCOMPAT_FEATURE(sb,mask)			\
-	EXT4_SB(sb)->s_es->s_feature_incompat &= ~cpu_to_le32(mask)
-
 #define EXT4_FEATURE_COMPAT_DIR_PREALLOC	0x0001
 #define EXT4_FEATURE_COMPAT_IMAGIC_INODES	0x0002
 #define EXT4_FEATURE_COMPAT_HAS_JOURNAL		0x0004
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index d7ccb7f..c930a01 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -4679,6 +4679,7 @@ static int ext4_alloc_file_blocks(struct file *file, ext4_lblk_t offset,
 	unsigned int credits;
 	loff_t epos;
 
+	BUG_ON(!ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS));
 	map.m_lblk = offset;
 	map.m_len = len;
 	/*
@@ -4693,13 +4694,7 @@ static int ext4_alloc_file_blocks(struct file *file, ext4_lblk_t offset,
 	 * credits to insert 1 extent into extent tree
 	 */
 	credits = ext4_chunk_trans_blocks(inode, len);
-	/*
-	 * We can only call ext_depth() on extent based inodes
-	 */
-	if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
-		depth = ext_depth(inode);
-	else
-		depth = -1;
+	depth = ext_depth(inode);
 
 retry:
 	while (ret >= 0 && len) {
@@ -4966,13 +4961,8 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
 
 	trace_ext4_fallocate_enter(inode, offset, len, mode);
 	lblk = offset >> blkbits;
-	/*
-	 * We can't just convert len to max_blocks because
-	 * If blocksize = 4096 offset = 3072 and len = 2048
-	 */
-	max_blocks = (EXT4_BLOCK_ALIGN(len + offset, blkbits) >> blkbits)
-		- lblk;
 
+	max_blocks = EXT4_MAX_BLOCKS(len, offset, blkbits);
 	flags = EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT;
 	if (mode & FALLOC_FL_KEEP_SIZE)
 		flags |= EXT4_GET_BLOCKS_KEEP_SIZE;
@@ -5035,12 +5025,8 @@ int ext4_convert_unwritten_extents(handle_t *handle, struct inode *inode,
 	unsigned int credits, blkbits = inode->i_blkbits;
 
 	map.m_lblk = offset >> blkbits;
-	/*
-	 * We can't just convert len to max_blocks because
-	 * If blocksize = 4096 offset = 3072 and len = 2048
-	 */
-	max_blocks = ((EXT4_BLOCK_ALIGN(len + offset, blkbits) >> blkbits) -
-		      map.m_lblk);
+	max_blocks = EXT4_MAX_BLOCKS(len, offset, blkbits);
+
 	/*
 	 * This is somewhat ugly but the idea is clear: When transaction is
 	 * reserved, everything goes into it. Otherwise we rather start several
@@ -5734,6 +5720,9 @@ int ext4_insert_range(struct inode *inode, loff_t offset, loff_t len)
 			up_write(&EXT4_I(inode)->i_data_sem);
 			goto out_stop;
 		}
+	} else {
+		ext4_ext_drop_refs(path);
+		kfree(path);
 	}
 
 	ret = ext4_es_remove_extent(inode, offset_lblk,
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 261ac37..25f763f 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -91,9 +91,7 @@ ext4_unaligned_aio(struct inode *inode, struct iov_iter *from, loff_t pos)
 static ssize_t
 ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
 {
-	struct file *file = iocb->ki_filp;
 	struct inode *inode = file_inode(iocb->ki_filp);
-	struct blk_plug plug;
 	int o_direct = iocb->ki_flags & IOCB_DIRECT;
 	int unaligned_aio = 0;
 	int overwrite = 0;
@@ -134,18 +132,16 @@ ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
 	if (o_direct) {
 		size_t length = iov_iter_count(from);
 		loff_t pos = iocb->ki_pos;
-		blk_start_plug(&plug);
 
 		/* check whether we do a DIO overwrite or not */
 		if (ext4_should_dioread_nolock(inode) && !unaligned_aio &&
-		    !file->f_mapping->nrpages && pos + length <= i_size_read(inode)) {
+		    pos + length <= i_size_read(inode)) {
 			struct ext4_map_blocks map;
 			unsigned int blkbits = inode->i_blkbits;
 			int err, len;
 
 			map.m_lblk = pos >> blkbits;
-			map.m_len = (EXT4_BLOCK_ALIGN(pos + length, blkbits) >> blkbits)
-				- map.m_lblk;
+			map.m_len = EXT4_MAX_BLOCKS(length, pos, blkbits);
 			len = map.m_len;
 
 			err = ext4_map_blocks(NULL, inode, &map, 0);
@@ -171,8 +167,6 @@ ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
 
 	if (ret > 0)
 		ret = generic_write_sync(iocb, ret);
-	if (o_direct)
-		blk_finish_plug(&plug);
 
 	return ret;
 
diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c
index 5c43725..88effb1 100644
--- a/fs/ext4/fsync.c
+++ b/fs/ext4/fsync.c
@@ -61,6 +61,13 @@ static int ext4_sync_parent(struct inode *inode)
 			break;
 		iput(inode);
 		inode = next;
+		/*
+		 * The directory inode may have gone through rmdir by now. But
+		 * the inode itself and its blocks are still allocated (we hold
+		 * a reference to the inode so it didn't go through
+		 * ext4_evict_inode()) and so we are safe to flush metadata
+		 * blocks and the inode.
+		 */
 		ret = sync_mapping_buffers(inode->i_mapping);
 		if (ret)
 			break;
@@ -107,7 +114,7 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
 
 	if (!journal) {
 		ret = __generic_file_fsync(file, start, end, datasync);
-		if (!ret && !hlist_empty(&inode->i_dentry))
+		if (!ret)
 			ret = ext4_sync_parent(inode);
 		if (test_opt(inode->i_sb, BARRIER))
 			goto issue_flush;
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 9e66cd1..170421e 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -802,7 +802,7 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir,
 	} else
 		inode_init_owner(inode, dir, mode);
 
-	if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_PROJECT) &&
+	if (ext4_has_feature_project(sb) &&
 	    ext4_test_inode_flag(dir, EXT4_INODE_PROJINHERIT))
 		ei->i_projid = EXT4_I(dir)->i_projid;
 	else
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index c6ea25a..cd91882 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -647,11 +647,19 @@ found:
 		/*
 		 * We have to zeroout blocks before inserting them into extent
 		 * status tree. Otherwise someone could look them up there and
-		 * use them before they are really zeroed.
+		 * use them before they are really zeroed. We also have to
+		 * unmap metadata before zeroing as otherwise writeback can
+		 * overwrite zeros with stale data from block device.
 		 */
 		if (flags & EXT4_GET_BLOCKS_ZERO &&
 		    map->m_flags & EXT4_MAP_MAPPED &&
 		    map->m_flags & EXT4_MAP_NEW) {
+			ext4_lblk_t i;
+
+			for (i = 0; i < map->m_len; i++) {
+				unmap_underlying_metadata(inode->i_sb->s_bdev,
+							  map->m_pblk + i);
+			}
 			ret = ext4_issue_zeroout(inode, map->m_lblk,
 						 map->m_pblk, map->m_len);
 			if (ret) {
@@ -1649,6 +1657,8 @@ static void mpage_release_unused_pages(struct mpage_da_data *mpd,
 			BUG_ON(!PageLocked(page));
 			BUG_ON(PageWriteback(page));
 			if (invalidate) {
+				if (page_mapped(page))
+					clear_page_dirty_for_io(page);
 				block_invalidatepage(page, 0, PAGE_SIZE);
 				ClearPageUptodate(page);
 			}
@@ -3526,35 +3536,31 @@ out:
 
 static ssize_t ext4_direct_IO_read(struct kiocb *iocb, struct iov_iter *iter)
 {
-	int unlocked = 0;
-	struct inode *inode = iocb->ki_filp->f_mapping->host;
+	struct address_space *mapping = iocb->ki_filp->f_mapping;
+	struct inode *inode = mapping->host;
 	ssize_t ret;
 
-	if (ext4_should_dioread_nolock(inode)) {
-		/*
-		 * Nolock dioread optimization may be dynamically disabled
-		 * via ext4_inode_block_unlocked_dio(). Check inode's state
-		 * while holding extra i_dio_count ref.
-		 */
-		inode_dio_begin(inode);
-		smp_mb();
-		if (unlikely(ext4_test_inode_state(inode,
-						    EXT4_STATE_DIOREAD_LOCK)))
-			inode_dio_end(inode);
-		else
-			unlocked = 1;
-	}
+	/*
+	 * Shared inode_lock is enough for us - it protects against concurrent
+	 * writes & truncates and since we take care of writing back page cache,
+	 * we are protected against page writeback as well.
+	 */
+	inode_lock_shared(inode);
 	if (IS_DAX(inode)) {
-		ret = dax_do_io(iocb, inode, iter, ext4_dio_get_block,
-				NULL, unlocked ? 0 : DIO_LOCKING);
+		ret = dax_do_io(iocb, inode, iter, ext4_dio_get_block, NULL, 0);
 	} else {
+		size_t count = iov_iter_count(iter);
+
+		ret = filemap_write_and_wait_range(mapping, iocb->ki_pos,
+						   iocb->ki_pos + count);
+		if (ret)
+			goto out_unlock;
 		ret = __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev,
 					   iter, ext4_dio_get_block,
-					   NULL, NULL,
-					   unlocked ? 0 : DIO_LOCKING);
+					   NULL, NULL, 0);
 	}
-	if (unlocked)
-		inode_dio_end(inode);
+out_unlock:
+	inode_unlock_shared(inode);
 	return ret;
 }
 
@@ -3890,7 +3896,7 @@ int ext4_update_disksize_before_punch(struct inode *inode, loff_t offset,
 }
 
 /*
- * ext4_punch_hole: punches a hole in a file by releaseing the blocks
+ * ext4_punch_hole: punches a hole in a file by releasing the blocks
  * associated with the given offset and length
  *
  * @inode:  File inode
@@ -3919,7 +3925,7 @@ int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length)
 	 * Write out all dirty pages to avoid race conditions
 	 * Then release them.
 	 */
-	if (mapping->nrpages && mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) {
+	if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) {
 		ret = filemap_write_and_wait_range(mapping, offset,
 						   offset + length - 1);
 		if (ret)
@@ -4414,7 +4420,7 @@ static inline void ext4_iget_extra_inode(struct inode *inode,
 
 int ext4_get_projid(struct inode *inode, kprojid_t *projid)
 {
-	if (!EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, EXT4_FEATURE_RO_COMPAT_PROJECT))
+	if (!ext4_has_feature_project(inode->i_sb))
 		return -EOPNOTSUPP;
 	*projid = EXT4_I(inode)->i_projid;
 	return 0;
@@ -4481,7 +4487,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
 	inode->i_mode = le16_to_cpu(raw_inode->i_mode);
 	i_uid = (uid_t)le16_to_cpu(raw_inode->i_uid_low);
 	i_gid = (gid_t)le16_to_cpu(raw_inode->i_gid_low);
-	if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_PROJECT) &&
+	if (ext4_has_feature_project(sb) &&
 	    EXT4_INODE_SIZE(sb) > EXT4_GOOD_OLD_INODE_SIZE &&
 	    EXT4_FITS_IN_INODE(raw_inode, ei, i_projid))
 		i_projid = (projid_t)le32_to_cpu(raw_inode->i_projid);
@@ -4814,14 +4820,14 @@ static int ext4_do_update_inode(handle_t *handle,
  * Fix up interoperability with old kernels. Otherwise, old inodes get
  * re-used with the upper 16 bits of the uid/gid intact
  */
-		if (!ei->i_dtime) {
+		if (ei->i_dtime && list_empty(&ei->i_orphan)) {
+			raw_inode->i_uid_high = 0;
+			raw_inode->i_gid_high = 0;
+		} else {
 			raw_inode->i_uid_high =
 				cpu_to_le16(high_16_bits(i_uid));
 			raw_inode->i_gid_high =
 				cpu_to_le16(high_16_bits(i_gid));
-		} else {
-			raw_inode->i_uid_high = 0;
-			raw_inode->i_gid_high = 0;
 		}
 	} else {
 		raw_inode->i_uid_low = cpu_to_le16(fs_high2lowuid(i_uid));
@@ -4885,8 +4891,7 @@ static int ext4_do_update_inode(handle_t *handle,
 		}
 	}
 
-	BUG_ON(!EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb,
-			EXT4_FEATURE_RO_COMPAT_PROJECT) &&
+	BUG_ON(!ext4_has_feature_project(inode->i_sb) &&
 	       i_projid != EXT4_DEF_PROJID);
 
 	if (EXT4_INODE_SIZE(inode->i_sb) > EXT4_GOOD_OLD_INODE_SIZE &&
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index 1bb7df5..bf5ae8e 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -19,8 +19,6 @@
 #include "ext4_jbd2.h"
 #include "ext4.h"
 
-#define MAX_32_NUM ((((unsigned long long) 1) << 32) - 1)
-
 /**
  * Swap memory between @a and @b for @len bytes.
  *
@@ -310,8 +308,7 @@ static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
 	struct ext4_inode *raw_inode;
 	struct dquot *transfer_to[MAXQUOTAS] = { };
 
-	if (!EXT4_HAS_RO_COMPAT_FEATURE(sb,
-			EXT4_FEATURE_RO_COMPAT_PROJECT)) {
+	if (!ext4_has_feature_project(sb)) {
 		if (projid != EXT4_DEF_PROJID)
 			return -EOPNOTSUPP;
 		else
@@ -772,6 +769,9 @@ resizefs_out:
 #ifdef CONFIG_EXT4_FS_ENCRYPTION
 		struct fscrypt_policy policy;
 
+		if (!ext4_has_feature_encrypt(sb))
+			return -EOPNOTSUPP;
+
 		if (copy_from_user(&policy,
 				   (struct fscrypt_policy __user *)arg,
 				   sizeof(policy)))
@@ -842,8 +842,7 @@ resizefs_out:
 		ext4_get_inode_flags(ei);
 		fa.fsx_xflags = ext4_iflags_to_xflags(ei->i_flags & EXT4_FL_USER_VISIBLE);
 
-		if (EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb,
-				EXT4_FEATURE_RO_COMPAT_PROJECT)) {
+		if (ext4_has_feature_project(inode->i_sb)) {
 			fa.fsx_projid = (__u32)from_kprojid(&init_user_ns,
 				EXT4_I(inode)->i_projid);
 		}
diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c
index a920c5d..6fc14de 100644
--- a/fs/ext4/move_extent.c
+++ b/fs/ext4/move_extent.c
@@ -598,6 +598,13 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp, __u64 orig_blk,
 		return -EOPNOTSUPP;
 	}
 
+	if (ext4_encrypted_inode(orig_inode) ||
+	    ext4_encrypted_inode(donor_inode)) {
+		ext4_msg(orig_inode->i_sb, KERN_ERR,
+			 "Online defrag not supported for encrypted files");
+		return -EOPNOTSUPP;
+	}
+
 	/* Protect orig and donor inodes against a truncate */
 	lock_two_nondirectories(orig_inode, donor_inode);
 
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 34c0142..c344b81 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -639,7 +639,7 @@ static struct stats dx_show_leaf(struct inode *dir,
 					res = fscrypt_fname_alloc_buffer(
 						dir, len,
 						&fname_crypto_str);
-					if (res < 0)
+					if (res)
 						printk(KERN_WARNING "Error "
 							"allocating crypto "
 							"buffer--skipping "
@@ -647,7 +647,7 @@ static struct stats dx_show_leaf(struct inode *dir,
 					res = fscrypt_fname_disk_to_usr(dir,
 						0, 0, &de_name,
 						&fname_crypto_str);
-					if (res < 0) {
+					if (res) {
 						printk(KERN_WARNING "Error "
 							"converting filename "
 							"from disk to usr"
@@ -1011,7 +1011,7 @@ static int htree_dirblock_to_tree(struct file *dir_file,
 			err = fscrypt_fname_disk_to_usr(dir, hinfo->hash,
 					hinfo->minor_hash, &de_name,
 					&fname_crypto_str);
-			if (err < 0) {
+			if (err) {
 				count = err;
 				goto errout;
 			}
@@ -2044,33 +2044,31 @@ static int make_indexed_dir(handle_t *handle, struct ext4_filename *fname,
 	frame->entries = entries;
 	frame->at = entries;
 	frame->bh = bh;
-	bh = bh2;
 
 	retval = ext4_handle_dirty_dx_node(handle, dir, frame->bh);
 	if (retval)
 		goto out_frames;	
-	retval = ext4_handle_dirty_dirent_node(handle, dir, bh);
+	retval = ext4_handle_dirty_dirent_node(handle, dir, bh2);
 	if (retval)
 		goto out_frames;	
 
-	de = do_split(handle,dir, &bh, frame, &fname->hinfo);
+	de = do_split(handle,dir, &bh2, frame, &fname->hinfo);
 	if (IS_ERR(de)) {
 		retval = PTR_ERR(de);
 		goto out_frames;
 	}
-	dx_release(frames);
 
-	retval = add_dirent_to_buf(handle, fname, dir, inode, de, bh);
-	brelse(bh);
-	return retval;
+	retval = add_dirent_to_buf(handle, fname, dir, inode, de, bh2);
 out_frames:
 	/*
 	 * Even if the block split failed, we have to properly write
 	 * out all the changes we did so far. Otherwise we can end up
 	 * with corrupted filesystem.
 	 */
-	ext4_mark_inode_dirty(handle, dir);
+	if (retval)
+		ext4_mark_inode_dirty(handle, dir);
 	dx_release(frames);
+	brelse(bh2);
 	return retval;
 }
 
@@ -3144,7 +3142,7 @@ static int ext4_symlink(struct inode *dir,
 		istr.name = (const unsigned char *) symname;
 		istr.len = len;
 		err = fscrypt_fname_usr_to_disk(inode, &istr, &ostr);
-		if (err < 0)
+		if (err)
 			goto err_drop_inode;
 		sd->len = cpu_to_le16(ostr.len);
 		disk_link.name = (char *) sd;
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index a6132a7..b4cbee9 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -405,14 +405,12 @@ int ext4_bio_write_page(struct ext4_io_submit *io,
 {
 	struct page *data_page = NULL;
 	struct inode *inode = page->mapping->host;
-	unsigned block_start, blocksize;
+	unsigned block_start;
 	struct buffer_head *bh, *head;
 	int ret = 0;
 	int nr_submitted = 0;
 	int nr_to_submit = 0;
 
-	blocksize = 1 << inode->i_blkbits;
-
 	BUG_ON(!PageLocked(page));
 	BUG_ON(PageWriteback(page));
 
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 3ec8708..6db81fb 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -78,6 +78,8 @@ static int ext4_feature_set_ok(struct super_block *sb, int readonly);
 static void ext4_destroy_lazyinit_thread(void);
 static void ext4_unregister_li_request(struct super_block *sb);
 static void ext4_clear_request_list(void);
+static struct inode *ext4_get_journal_inode(struct super_block *sb,
+					    unsigned int journal_inum);
 
 /*
  * Lock ordering
@@ -1267,7 +1269,7 @@ enum {
 	Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
 	Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, Opt_quota,
 	Opt_noquota, Opt_barrier, Opt_nobarrier, Opt_err,
-	Opt_usrquota, Opt_grpquota, Opt_i_version, Opt_dax,
+	Opt_usrquota, Opt_grpquota, Opt_prjquota, Opt_i_version, Opt_dax,
 	Opt_stripe, Opt_delalloc, Opt_nodelalloc, Opt_mblk_io_submit,
 	Opt_lazytime, Opt_nolazytime,
 	Opt_nomblk_io_submit, Opt_block_validity, Opt_noblock_validity,
@@ -1327,6 +1329,7 @@ static const match_table_t tokens = {
 	{Opt_noquota, "noquota"},
 	{Opt_quota, "quota"},
 	{Opt_usrquota, "usrquota"},
+	{Opt_prjquota, "prjquota"},
 	{Opt_barrier, "barrier=%u"},
 	{Opt_barrier, "barrier"},
 	{Opt_nobarrier, "nobarrier"},
@@ -1546,8 +1549,11 @@ static const struct mount_opts {
 							MOPT_SET | MOPT_Q},
 	{Opt_grpquota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_GRPQUOTA,
 							MOPT_SET | MOPT_Q},
+	{Opt_prjquota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_PRJQUOTA,
+							MOPT_SET | MOPT_Q},
 	{Opt_noquota, (EXT4_MOUNT_QUOTA | EXT4_MOUNT_USRQUOTA |
-		       EXT4_MOUNT_GRPQUOTA), MOPT_CLEAR | MOPT_Q},
+		       EXT4_MOUNT_GRPQUOTA | EXT4_MOUNT_PRJQUOTA),
+							MOPT_CLEAR | MOPT_Q},
 	{Opt_usrjquota, 0, MOPT_Q},
 	{Opt_grpjquota, 0, MOPT_Q},
 	{Opt_offusrjquota, 0, MOPT_Q},
@@ -1836,13 +1842,17 @@ static int parse_options(char *options, struct super_block *sb,
 			return 0;
 	}
 #ifdef CONFIG_QUOTA
-	if (ext4_has_feature_quota(sb) &&
-	    (test_opt(sb, USRQUOTA) || test_opt(sb, GRPQUOTA))) {
-		ext4_msg(sb, KERN_INFO, "Quota feature enabled, usrquota and grpquota "
-			 "mount options ignored.");
-		clear_opt(sb, USRQUOTA);
-		clear_opt(sb, GRPQUOTA);
-	} else if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
+	/*
+	 * We do the test below only for project quotas. 'usrquota' and
+	 * 'grpquota' mount options are allowed even without quota feature
+	 * to support legacy quotas in quota files.
+	 */
+	if (test_opt(sb, PRJQUOTA) && !ext4_has_feature_project(sb)) {
+		ext4_msg(sb, KERN_ERR, "Project quota feature not enabled. "
+			 "Cannot enable project quota enforcement.");
+		return 0;
+	}
+	if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
 		if (test_opt(sb, USRQUOTA) && sbi->s_qf_names[USRQUOTA])
 			clear_opt(sb, USRQUOTA);
 
@@ -2741,7 +2751,6 @@ static int ext4_run_li_request(struct ext4_li_request *elr)
 	sb = elr->lr_super;
 	ngroups = EXT4_SB(sb)->s_groups_count;
 
-	sb_start_write(sb);
 	for (group = elr->lr_next_group; group < ngroups; group++) {
 		gdp = ext4_get_group_desc(sb, group, NULL);
 		if (!gdp) {
@@ -2768,8 +2777,6 @@ static int ext4_run_li_request(struct ext4_li_request *elr)
 		elr->lr_next_sched = jiffies + elr->lr_timeout;
 		elr->lr_next_group = group + 1;
 	}
-	sb_end_write(sb);
-
 	return ret;
 }
 
@@ -2834,19 +2841,43 @@ cont_thread:
 			mutex_unlock(&eli->li_list_mtx);
 			goto exit_thread;
 		}
-
 		list_for_each_safe(pos, n, &eli->li_request_list) {
+			int err = 0;
+			int progress = 0;
 			elr = list_entry(pos, struct ext4_li_request,
 					 lr_request);
 
-			if (time_after_eq(jiffies, elr->lr_next_sched)) {
-				if (ext4_run_li_request(elr) != 0) {
-					/* error, remove the lazy_init job */
-					ext4_remove_li_request(elr);
-					continue;
+			if (time_before(jiffies, elr->lr_next_sched)) {
+				if (time_before(elr->lr_next_sched, next_wakeup))
+					next_wakeup = elr->lr_next_sched;
+				continue;
+			}
+			if (down_read_trylock(&elr->lr_super->s_umount)) {
+				if (sb_start_write_trylock(elr->lr_super)) {
+					progress = 1;
+					/*
+					 * We hold sb->s_umount, sb can not
+					 * be removed from the list, it is
+					 * now safe to drop li_list_mtx
+					 */
+					mutex_unlock(&eli->li_list_mtx);
+					err = ext4_run_li_request(elr);
+					sb_end_write(elr->lr_super);
+					mutex_lock(&eli->li_list_mtx);
+					n = pos->next;
 				}
+				up_read((&elr->lr_super->s_umount));
+			}
+			/* error, remove the lazy_init job */
+			if (err) {
+				ext4_remove_li_request(elr);
+				continue;
+			}
+			if (!progress) {
+				elr->lr_next_sched = jiffies +
+					(prandom_u32()
+					 % (EXT4_DEF_LI_MAX_START_DELAY * HZ));
 			}
-
 			if (time_before(elr->lr_next_sched, next_wakeup))
 				next_wakeup = elr->lr_next_sched;
 		}
@@ -3179,6 +3210,8 @@ int ext4_calculate_overhead(struct super_block *sb)
 {
 	struct ext4_sb_info *sbi = EXT4_SB(sb);
 	struct ext4_super_block *es = sbi->s_es;
+	struct inode *j_inode;
+	unsigned int j_blocks, j_inum = le32_to_cpu(es->s_journal_inum);
 	ext4_group_t i, ngroups = ext4_get_groups_count(sb);
 	ext4_fsblk_t overhead = 0;
 	char *buf = (char *) get_zeroed_page(GFP_NOFS);
@@ -3209,10 +3242,23 @@ int ext4_calculate_overhead(struct super_block *sb)
 			memset(buf, 0, PAGE_SIZE);
 		cond_resched();
 	}
-	/* Add the internal journal blocks as well */
+
+	/*
+	 * Add the internal journal blocks whether the journal has been
+	 * loaded or not
+	 */
 	if (sbi->s_journal && !sbi->journal_bdev)
 		overhead += EXT4_NUM_B2C(sbi, sbi->s_journal->j_maxlen);
-
+	else if (ext4_has_feature_journal(sb) && !sbi->s_journal) {
+		j_inode = ext4_get_journal_inode(sb, j_inum);
+		if (j_inode) {
+			j_blocks = j_inode->i_size >> sb->s_blocksize_bits;
+			overhead += EXT4_NUM_B2C(sbi, j_blocks);
+			iput(j_inode);
+		} else {
+			ext4_msg(sb, KERN_ERR, "can't get journal size");
+		}
+	}
 	sbi->s_overhead = overhead;
 	smp_wmb();
 	free_page((unsigned long) buf);
@@ -4208,18 +4254,16 @@ static void ext4_init_journal_params(struct super_block *sb, journal_t *journal)
 	write_unlock(&journal->j_state_lock);
 }
 
-static journal_t *ext4_get_journal(struct super_block *sb,
-				   unsigned int journal_inum)
+static struct inode *ext4_get_journal_inode(struct super_block *sb,
+					     unsigned int journal_inum)
 {
 	struct inode *journal_inode;
-	journal_t *journal;
-
-	BUG_ON(!ext4_has_feature_journal(sb));
-
-	/* First, test for the existence of a valid inode on disk.  Bad
-	 * things happen if we iget() an unused inode, as the subsequent
-	 * iput() will try to delete it. */
 
+	/*
+	 * Test for the existence of a valid inode on disk.  Bad things
+	 * happen if we iget() an unused inode, as the subsequent iput()
+	 * will try to delete it.
+	 */
 	journal_inode = ext4_iget(sb, journal_inum);
 	if (IS_ERR(journal_inode)) {
 		ext4_msg(sb, KERN_ERR, "no journal found");
@@ -4239,6 +4283,20 @@ static journal_t *ext4_get_journal(struct super_block *sb,
 		iput(journal_inode);
 		return NULL;
 	}
+	return journal_inode;
+}
+
+static journal_t *ext4_get_journal(struct super_block *sb,
+				   unsigned int journal_inum)
+{
+	struct inode *journal_inode;
+	journal_t *journal;
+
+	BUG_ON(!ext4_has_feature_journal(sb));
+
+	journal_inode = ext4_get_journal_inode(sb, journal_inum);
+	if (!journal_inode)
+		return NULL;
 
 	journal = jbd2_journal_init_inode(journal_inode);
 	if (!journal) {
@@ -5250,12 +5308,18 @@ static int ext4_enable_quotas(struct super_block *sb)
 		le32_to_cpu(EXT4_SB(sb)->s_es->s_grp_quota_inum),
 		le32_to_cpu(EXT4_SB(sb)->s_es->s_prj_quota_inum)
 	};
+	bool quota_mopt[EXT4_MAXQUOTAS] = {
+		test_opt(sb, USRQUOTA),
+		test_opt(sb, GRPQUOTA),
+		test_opt(sb, PRJQUOTA),
+	};
 
 	sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
 	for (type = 0; type < EXT4_MAXQUOTAS; type++) {
 		if (qf_inums[type]) {
 			err = ext4_quota_enable(sb, type, QFMT_VFS_V1,
-						DQUOT_USAGE_ENABLED);
+				DQUOT_USAGE_ENABLED |
+				(quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0));
 			if (err) {
 				ext4_warning(sb,
 					"Failed to enable quota tracking "
diff --git a/fs/ext4/symlink.c b/fs/ext4/symlink.c
index 4d83d9e..fdf1c61 100644
--- a/fs/ext4/symlink.c
+++ b/fs/ext4/symlink.c
@@ -30,7 +30,6 @@ static const char *ext4_encrypted_get_link(struct dentry *dentry,
 	char *caddr, *paddr = NULL;
 	struct fscrypt_str cstr, pstr;
 	struct fscrypt_symlink_data *sd;
-	loff_t size = min_t(loff_t, i_size_read(inode), PAGE_SIZE - 1);
 	int res;
 	u32 max_size = inode->i_sb->s_blocksize;
 
@@ -49,7 +48,6 @@ static const char *ext4_encrypted_get_link(struct dentry *dentry,
 		if (IS_ERR(cpage))
 			return ERR_CAST(cpage);
 		caddr = page_address(cpage);
-		caddr[size] = 0;
 	}
 
 	/* Symlink is encrypted */
@@ -65,16 +63,14 @@ static const char *ext4_encrypted_get_link(struct dentry *dentry,
 	res = fscrypt_fname_alloc_buffer(inode, cstr.len, &pstr);
 	if (res)
 		goto errout;
+	paddr = pstr.name;
 
 	res = fscrypt_fname_disk_to_usr(inode, 0, 0, &cstr, &pstr);
-	if (res < 0)
+	if (res)
 		goto errout;
 
-	paddr = pstr.name;
-
 	/* Null-terminate the name */
-	if (res <= pstr.len)
-		paddr[res] = '\0';
+	paddr[pstr.len] = '\0';
 	if (cpage)
 		put_page(cpage);
 	set_delayed_call(done, kfree_link, paddr);
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 2eb935c..c15d633 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -199,6 +199,8 @@ ext4_xattr_check_names(struct ext4_xattr_entry *entry, void *end,
 	}
 
 	while (!IS_LAST_ENTRY(entry)) {
+		if (entry->e_value_block != 0)
+			return -EFSCORRUPTED;
 		if (entry->e_value_size != 0 &&
 		    (value_start + le16_to_cpu(entry->e_value_offs) <
 		     (void *)e + sizeof(__u32) ||
@@ -641,7 +643,7 @@ static size_t ext4_xattr_free_space(struct ext4_xattr_entry *last,
 				    size_t *min_offs, void *base, int *total)
 {
 	for (; !IS_LAST_ENTRY(last); last = EXT4_XATTR_NEXT(last)) {
-		if (!last->e_value_block && last->e_value_size) {
+		if (last->e_value_size) {
 			size_t offs = le16_to_cpu(last->e_value_offs);
 			if (offs < *min_offs)
 				*min_offs = offs;
@@ -661,7 +663,7 @@ ext4_xattr_set_entry(struct ext4_xattr_info *i, struct ext4_xattr_search *s)
 	/* Compute min_offs and last. */
 	last = s->first;
 	for (; !IS_LAST_ENTRY(last); last = EXT4_XATTR_NEXT(last)) {
-		if (!last->e_value_block && last->e_value_size) {
+		if (last->e_value_size) {
 			size_t offs = le16_to_cpu(last->e_value_offs);
 			if (offs < min_offs)
 				min_offs = offs;
@@ -669,7 +671,7 @@ ext4_xattr_set_entry(struct ext4_xattr_info *i, struct ext4_xattr_search *s)
 	}
 	free = min_offs - ((void *)last - s->base) - sizeof(__u32);
 	if (!s->not_found) {
-		if (!s->here->e_value_block && s->here->e_value_size) {
+		if (s->here->e_value_size) {
 			size_t size = le32_to_cpu(s->here->e_value_size);
 			free += EXT4_XATTR_SIZE(size);
 		}
@@ -691,7 +693,7 @@ ext4_xattr_set_entry(struct ext4_xattr_info *i, struct ext4_xattr_search *s)
 		s->here->e_name_len = name_len;
 		memcpy(s->here->e_name, i->name, name_len);
 	} else {
-		if (!s->here->e_value_block && s->here->e_value_size) {
+		if (s->here->e_value_size) {
 			void *first_val = s->base + min_offs;
 			size_t offs = le16_to_cpu(s->here->e_value_offs);
 			void *val = s->base + offs;
@@ -725,8 +727,7 @@ ext4_xattr_set_entry(struct ext4_xattr_info *i, struct ext4_xattr_search *s)
 			last = s->first;
 			while (!IS_LAST_ENTRY(last)) {
 				size_t o = le16_to_cpu(last->e_value_offs);
-				if (!last->e_value_block &&
-				    last->e_value_size && o < offs)
+				if (last->e_value_size && o < offs)
 					last->e_value_offs =
 						cpu_to_le16(o + size);
 				last = EXT4_XATTR_NEXT(last);
@@ -1318,18 +1319,19 @@ retry:
  */
 static void ext4_xattr_shift_entries(struct ext4_xattr_entry *entry,
 				     int value_offs_shift, void *to,
-				     void *from, size_t n, int blocksize)
+				     void *from, size_t n)
 {
 	struct ext4_xattr_entry *last = entry;
 	int new_offs;
 
+	/* We always shift xattr headers further thus offsets get lower */
+	BUG_ON(value_offs_shift > 0);
+
 	/* Adjust the value offsets of the entries */
 	for (; !IS_LAST_ENTRY(last); last = EXT4_XATTR_NEXT(last)) {
-		if (!last->e_value_block && last->e_value_size) {
+		if (last->e_value_size) {
 			new_offs = le16_to_cpu(last->e_value_offs) +
 							value_offs_shift;
-			BUG_ON(new_offs + le32_to_cpu(last->e_value_size)
-				 > blocksize);
 			last->e_value_offs = cpu_to_le16(new_offs);
 		}
 	}
@@ -1338,6 +1340,141 @@ static void ext4_xattr_shift_entries(struct ext4_xattr_entry *entry,
 }
 
 /*
+ * Move xattr pointed to by 'entry' from inode into external xattr block
+ */
+static int ext4_xattr_move_to_block(handle_t *handle, struct inode *inode,
+				    struct ext4_inode *raw_inode,
+				    struct ext4_xattr_entry *entry)
+{
+	struct ext4_xattr_ibody_find *is = NULL;
+	struct ext4_xattr_block_find *bs = NULL;
+	char *buffer = NULL, *b_entry_name = NULL;
+	size_t value_offs, value_size;
+	struct ext4_xattr_info i = {
+		.value = NULL,
+		.value_len = 0,
+		.name_index = entry->e_name_index,
+	};
+	struct ext4_xattr_ibody_header *header = IHDR(inode, raw_inode);
+	int error;
+
+	value_offs = le16_to_cpu(entry->e_value_offs);
+	value_size = le32_to_cpu(entry->e_value_size);
+
+	is = kzalloc(sizeof(struct ext4_xattr_ibody_find), GFP_NOFS);
+	bs = kzalloc(sizeof(struct ext4_xattr_block_find), GFP_NOFS);
+	buffer = kmalloc(value_size, GFP_NOFS);
+	b_entry_name = kmalloc(entry->e_name_len + 1, GFP_NOFS);
+	if (!is || !bs || !buffer || !b_entry_name) {
+		error = -ENOMEM;
+		goto out;
+	}
+
+	is->s.not_found = -ENODATA;
+	bs->s.not_found = -ENODATA;
+	is->iloc.bh = NULL;
+	bs->bh = NULL;
+
+	/* Save the entry name and the entry value */
+	memcpy(buffer, (void *)IFIRST(header) + value_offs, value_size);
+	memcpy(b_entry_name, entry->e_name, entry->e_name_len);
+	b_entry_name[entry->e_name_len] = '\0';
+	i.name = b_entry_name;
+
+	error = ext4_get_inode_loc(inode, &is->iloc);
+	if (error)
+		goto out;
+
+	error = ext4_xattr_ibody_find(inode, &i, is);
+	if (error)
+		goto out;
+
+	/* Remove the chosen entry from the inode */
+	error = ext4_xattr_ibody_set(handle, inode, &i, is);
+	if (error)
+		goto out;
+
+	i.name = b_entry_name;
+	i.value = buffer;
+	i.value_len = value_size;
+	error = ext4_xattr_block_find(inode, &i, bs);
+	if (error)
+		goto out;
+
+	/* Add entry which was removed from the inode into the block */
+	error = ext4_xattr_block_set(handle, inode, &i, bs);
+	if (error)
+		goto out;
+	error = 0;
+out:
+	kfree(b_entry_name);
+	kfree(buffer);
+	if (is)
+		brelse(is->iloc.bh);
+	kfree(is);
+	kfree(bs);
+
+	return error;
+}
+
+static int ext4_xattr_make_inode_space(handle_t *handle, struct inode *inode,
+				       struct ext4_inode *raw_inode,
+				       int isize_diff, size_t ifree,
+				       size_t bfree, int *total_ino)
+{
+	struct ext4_xattr_ibody_header *header = IHDR(inode, raw_inode);
+	struct ext4_xattr_entry *small_entry;
+	struct ext4_xattr_entry *entry;
+	struct ext4_xattr_entry *last;
+	unsigned int entry_size;	/* EA entry size */
+	unsigned int total_size;	/* EA entry size + value size */
+	unsigned int min_total_size;
+	int error;
+
+	while (isize_diff > ifree) {
+		entry = NULL;
+		small_entry = NULL;
+		min_total_size = ~0U;
+		last = IFIRST(header);
+		/* Find the entry best suited to be pushed into EA block */
+		for (; !IS_LAST_ENTRY(last); last = EXT4_XATTR_NEXT(last)) {
+			total_size =
+			EXT4_XATTR_SIZE(le32_to_cpu(last->e_value_size)) +
+					EXT4_XATTR_LEN(last->e_name_len);
+			if (total_size <= bfree &&
+			    total_size < min_total_size) {
+				if (total_size + ifree < isize_diff) {
+					small_entry = last;
+				} else {
+					entry = last;
+					min_total_size = total_size;
+				}
+			}
+		}
+
+		if (entry == NULL) {
+			if (small_entry == NULL)
+				return -ENOSPC;
+			entry = small_entry;
+		}
+
+		entry_size = EXT4_XATTR_LEN(entry->e_name_len);
+		total_size = entry_size +
+			EXT4_XATTR_SIZE(le32_to_cpu(entry->e_value_size));
+		error = ext4_xattr_move_to_block(handle, inode, raw_inode,
+						 entry);
+		if (error)
+			return error;
+
+		*total_ino -= entry_size;
+		ifree += total_size;
+		bfree -= total_size;
+	}
+
+	return 0;
+}
+
+/*
  * Expand an inode by new_extra_isize bytes when EAs are present.
  * Returns 0 on success or negative error number on failure.
  */
@@ -1345,14 +1482,11 @@ int ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize,
 			       struct ext4_inode *raw_inode, handle_t *handle)
 {
 	struct ext4_xattr_ibody_header *header;
-	struct ext4_xattr_entry *entry, *last, *first;
 	struct buffer_head *bh = NULL;
-	struct ext4_xattr_ibody_find *is = NULL;
-	struct ext4_xattr_block_find *bs = NULL;
-	char *buffer = NULL, *b_entry_name = NULL;
-	size_t min_offs, free;
+	size_t min_offs;
+	size_t ifree, bfree;
 	int total_ino;
-	void *base, *start, *end;
+	void *base, *end;
 	int error = 0, tried_min_extra_isize = 0;
 	int s_min_extra_isize = le16_to_cpu(EXT4_SB(inode->i_sb)->s_es->s_min_extra_isize);
 	int isize_diff;	/* How much do we need to grow i_extra_isize */
@@ -1368,34 +1502,24 @@ retry:
 		goto out;
 
 	header = IHDR(inode, raw_inode);
-	entry = IFIRST(header);
 
 	/*
 	 * Check if enough free space is available in the inode to shift the
 	 * entries ahead by new_extra_isize.
 	 */
 
-	base = start = entry;
+	base = IFIRST(header);
 	end = (void *)raw_inode + EXT4_SB(inode->i_sb)->s_inode_size;
 	min_offs = end - base;
-	last = entry;
 	total_ino = sizeof(struct ext4_xattr_ibody_header);
 
 	error = xattr_check_inode(inode, header, end);
 	if (error)
 		goto cleanup;
 
-	free = ext4_xattr_free_space(last, &min_offs, base, &total_ino);
-	if (free >= isize_diff) {
-		entry = IFIRST(header);
-		ext4_xattr_shift_entries(entry,	EXT4_I(inode)->i_extra_isize
-				- new_extra_isize, (void *)raw_inode +
-				EXT4_GOOD_OLD_INODE_SIZE + new_extra_isize,
-				(void *)header, total_ino,
-				inode->i_sb->s_blocksize);
-		EXT4_I(inode)->i_extra_isize = new_extra_isize;
-		goto out;
-	}
+	ifree = ext4_xattr_free_space(base, &min_offs, base, &total_ino);
+	if (ifree >= isize_diff)
+		goto shift;
 
 	/*
 	 * Enough free space isn't available in the inode, check if
@@ -1413,146 +1537,44 @@ retry:
 			goto cleanup;
 		}
 		base = BHDR(bh);
-		first = BFIRST(bh);
 		end = bh->b_data + bh->b_size;
 		min_offs = end - base;
-		free = ext4_xattr_free_space(first, &min_offs, base, NULL);
-		if (free < isize_diff) {
+		bfree = ext4_xattr_free_space(BFIRST(bh), &min_offs, base,
+					      NULL);
+		if (bfree + ifree < isize_diff) {
 			if (!tried_min_extra_isize && s_min_extra_isize) {
 				tried_min_extra_isize++;
 				new_extra_isize = s_min_extra_isize;
 				brelse(bh);
 				goto retry;
 			}
-			error = -1;
+			error = -ENOSPC;
 			goto cleanup;
 		}
 	} else {
-		free = inode->i_sb->s_blocksize;
+		bfree = inode->i_sb->s_blocksize;
 	}
 
-	while (isize_diff > 0) {
-		size_t offs, size, entry_size;
-		struct ext4_xattr_entry *small_entry = NULL;
-		struct ext4_xattr_info i = {
-			.value = NULL,
-			.value_len = 0,
-		};
-		unsigned int total_size;  /* EA entry size + value size */
-		unsigned int shift_bytes; /* No. of bytes to shift EAs by? */
-		unsigned int min_total_size = ~0U;
-
-		is = kzalloc(sizeof(struct ext4_xattr_ibody_find), GFP_NOFS);
-		bs = kzalloc(sizeof(struct ext4_xattr_block_find), GFP_NOFS);
-		if (!is || !bs) {
-			error = -ENOMEM;
-			goto cleanup;
-		}
-
-		is->s.not_found = -ENODATA;
-		bs->s.not_found = -ENODATA;
-		is->iloc.bh = NULL;
-		bs->bh = NULL;
-
-		last = IFIRST(header);
-		/* Find the entry best suited to be pushed into EA block */
-		entry = NULL;
-		for (; !IS_LAST_ENTRY(last); last = EXT4_XATTR_NEXT(last)) {
-			total_size =
-			EXT4_XATTR_SIZE(le32_to_cpu(last->e_value_size)) +
-					EXT4_XATTR_LEN(last->e_name_len);
-			if (total_size <= free && total_size < min_total_size) {
-				if (total_size < isize_diff) {
-					small_entry = last;
-				} else {
-					entry = last;
-					min_total_size = total_size;
-				}
-			}
-		}
-
-		if (entry == NULL) {
-			if (small_entry) {
-				entry = small_entry;
-			} else {
-				if (!tried_min_extra_isize &&
-				    s_min_extra_isize) {
-					tried_min_extra_isize++;
-					new_extra_isize = s_min_extra_isize;
-					kfree(is); is = NULL;
-					kfree(bs); bs = NULL;
-					brelse(bh);
-					goto retry;
-				}
-				error = -1;
-				goto cleanup;
-			}
-		}
-		offs = le16_to_cpu(entry->e_value_offs);
-		size = le32_to_cpu(entry->e_value_size);
-		entry_size = EXT4_XATTR_LEN(entry->e_name_len);
-		i.name_index = entry->e_name_index,
-		buffer = kmalloc(EXT4_XATTR_SIZE(size), GFP_NOFS);
-		b_entry_name = kmalloc(entry->e_name_len + 1, GFP_NOFS);
-		if (!buffer || !b_entry_name) {
-			error = -ENOMEM;
-			goto cleanup;
+	error = ext4_xattr_make_inode_space(handle, inode, raw_inode,
+					    isize_diff, ifree, bfree,
+					    &total_ino);
+	if (error) {
+		if (error == -ENOSPC && !tried_min_extra_isize &&
+		    s_min_extra_isize) {
+			tried_min_extra_isize++;
+			new_extra_isize = s_min_extra_isize;
+			brelse(bh);
+			goto retry;
 		}
-		/* Save the entry name and the entry value */
-		memcpy(buffer, (void *)IFIRST(header) + offs,
-		       EXT4_XATTR_SIZE(size));
-		memcpy(b_entry_name, entry->e_name, entry->e_name_len);
-		b_entry_name[entry->e_name_len] = '\0';
-		i.name = b_entry_name;
-
-		error = ext4_get_inode_loc(inode, &is->iloc);
-		if (error)
-			goto cleanup;
-
-		error = ext4_xattr_ibody_find(inode, &i, is);
-		if (error)
-			goto cleanup;
-
-		/* Remove the chosen entry from the inode */
-		error = ext4_xattr_ibody_set(handle, inode, &i, is);
-		if (error)
-			goto cleanup;
-		total_ino -= entry_size;
-
-		entry = IFIRST(header);
-		if (entry_size + EXT4_XATTR_SIZE(size) >= isize_diff)
-			shift_bytes = isize_diff;
-		else
-			shift_bytes = entry_size + EXT4_XATTR_SIZE(size);
-		/* Adjust the offsets and shift the remaining entries ahead */
-		ext4_xattr_shift_entries(entry, -shift_bytes,
-			(void *)raw_inode + EXT4_GOOD_OLD_INODE_SIZE +
-			EXT4_I(inode)->i_extra_isize + shift_bytes,
-			(void *)header, total_ino, inode->i_sb->s_blocksize);
-
-		isize_diff -= shift_bytes;
-		EXT4_I(inode)->i_extra_isize += shift_bytes;
-		header = IHDR(inode, raw_inode);
-
-		i.name = b_entry_name;
-		i.value = buffer;
-		i.value_len = size;
-		error = ext4_xattr_block_find(inode, &i, bs);
-		if (error)
-			goto cleanup;
-
-		/* Add entry which was removed from the inode into the block */
-		error = ext4_xattr_block_set(handle, inode, &i, bs);
-		if (error)
-			goto cleanup;
-		kfree(b_entry_name);
-		kfree(buffer);
-		b_entry_name = NULL;
-		buffer = NULL;
-		brelse(is->iloc.bh);
-		kfree(is);
-		kfree(bs);
+		goto cleanup;
 	}
+shift:
+	/* Adjust the offsets and shift the remaining entries ahead */
+	ext4_xattr_shift_entries(IFIRST(header), EXT4_I(inode)->i_extra_isize
+			- new_extra_isize, (void *)raw_inode +
+			EXT4_GOOD_OLD_INODE_SIZE + new_extra_isize,
+			(void *)header, total_ino);
+	EXT4_I(inode)->i_extra_isize = new_extra_isize;
 	brelse(bh);
 out:
 	ext4_clear_inode_state(inode, EXT4_STATE_NO_EXPAND);
@@ -1560,12 +1582,6 @@ out:
 	return 0;
 
 cleanup:
-	kfree(b_entry_name);
-	kfree(buffer);
-	if (is)
-		brelse(is->iloc.bh);
-	kfree(is);
-	kfree(bs);
 	brelse(bh);
 	/*
 	 * We deliberately leave EXT4_STATE_NO_EXPAND set here since inode
@@ -1734,7 +1750,7 @@ static inline void ext4_xattr_hash_entry(struct ext4_xattr_header *header,
 		       *name++;
 	}
 
-	if (entry->e_value_block == 0 && entry->e_value_size != 0) {
+	if (entry->e_value_size != 0) {
 		__le32 *value = (__le32 *)((char *)header +
 			le16_to_cpu(entry->e_value_offs));
 		for (n = (le32_to_cpu(entry->e_value_size) +