diff --git a/Documentation/filesystems/fiemap.rst b/Documentation/filesystems/fiemap.rst
index 93fc96f760aa66..fd0911e65b43fe 100644
--- a/Documentation/filesystems/fiemap.rst
+++ b/Documentation/filesystems/fiemap.rst
@@ -80,14 +80,24 @@ Each extent is described by a single fiemap_extent structure as
 returned in fm_extents::
 
     struct fiemap_extent {
-	    __u64	fe_logical;  /* logical offset in bytes for the start of
-				* the extent */
-	    __u64	fe_physical; /* physical offset in bytes for the start
-				* of the extent */
-	    __u64	fe_length;   /* length in bytes for the extent */
-	    __u64	fe_reserved64[2];
-	    __u32	fe_flags;    /* FIEMAP_EXTENT_* flags for this extent */
-	    __u32	fe_reserved[3];
+            /*
+             * logical offset in bytes for the start of
+             * the extent from the beginning of the file
+             */
+            __u64 fe_logical;
+            /*
+             * physical offset in bytes for the start
+             * of the extent from the beginning of the disk
+             */
+            __u64 fe_physical;
+            /* length in bytes for this extent */
+            __u64 fe_length;
+            /* physical length in bytes for this extent */
+            __u64 fe_physical_length;
+            __u64 fe_reserved64[1];
+            /* FIEMAP_EXTENT_* flags for this extent */
+            __u32 fe_flags;
+            __u32 fe_reserved[3];
     };
 
 All offsets and lengths are in bytes and mirror those on disk.  It is valid
@@ -224,7 +234,8 @@ For each extent in the request range, the file system should call
 the helper function, fiemap_fill_next_extent()::
 
   int fiemap_fill_next_extent(struct fiemap_extent_info *info, u64 logical,
-			      u64 phys, u64 len, u32 flags, u32 dev);
+			      u64 phys, u64 log_len, u64 phys_len, u32 flags,
+                              u32 dev);
 
 fiemap_fill_next_extent() will use the passed values to populate the
 next free extent in the fm_extents array. 'General' extent flags will
diff --git a/fs/bcachefs/fs.c b/fs/bcachefs/fs.c
index 77ae65542db916..e6dc2e7260ef14 100644
--- a/fs/bcachefs/fs.c
+++ b/fs/bcachefs/fs.c
@@ -859,7 +859,9 @@ static int bch2_fill_extent(struct bch_fs *c,
 			ret = fiemap_fill_next_extent(info,
 						bkey_start_offset(k.k) << 9,
 						offset << 9,
-						k.k->size << 9, flags|flags2);
+						k.k->size << 9,
+						k.k->size << 9,
+						flags|flags2);
 			if (ret)
 				return ret;
 		}
@@ -869,12 +871,14 @@ static int bch2_fill_extent(struct bch_fs *c,
 		return fiemap_fill_next_extent(info,
 					       bkey_start_offset(k.k) << 9,
 					       0, k.k->size << 9,
+					       k.k->size << 9,
 					       flags|
 					       FIEMAP_EXTENT_DATA_INLINE);
 	} else if (k.k->type == KEY_TYPE_reservation) {
 		return fiemap_fill_next_extent(info,
 					       bkey_start_offset(k.k) << 9,
 					       0, k.k->size << 9,
+					       k.k->size << 9,
 					       flags|
 					       FIEMAP_EXTENT_DELALLOC|
 					       FIEMAP_EXTENT_UNWRITTEN);
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index d39e034df37a45..87e3af4a3847dd 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2507,7 +2507,8 @@ int try_release_extent_mapping(struct page *page, gfp_t mask)
 struct btrfs_fiemap_entry {
 	u64 offset;
 	u64 phys;
-	u64 len;
+	u64 log_len;
+	u64 phys_len;
 	u32 flags;
 };
 
@@ -2565,7 +2566,8 @@ struct fiemap_cache {
 	/* Fields for the cached extent (unsubmitted, not ready, extent). */
 	u64 offset;
 	u64 phys;
-	u64 len;
+	u64 log_len;
+	u64 phys_len;
 	u32 flags;
 	bool cached;
 };
@@ -2578,8 +2580,8 @@ static int flush_fiemap_cache(struct fiemap_extent_info *fieinfo,
 		int ret;
 
 		ret = fiemap_fill_next_extent(fieinfo, entry->offset,
-					      entry->phys, entry->len,
-					      entry->flags);
+					      entry->phys, entry->log_len,
+					      entry->phys_len, entry->flags);
 		/*
 		 * Ignore 1 (reached max entries) because we keep track of that
 		 * ourselves in emit_fiemap_extent().
@@ -2604,7 +2606,8 @@ static int flush_fiemap_cache(struct fiemap_extent_info *fieinfo,
  */
 static int emit_fiemap_extent(struct fiemap_extent_info *fieinfo,
 				struct fiemap_cache *cache,
-				u64 offset, u64 phys, u64 len, u32 flags)
+				u64 offset, u64 phys, u64 log_len,
+				u64 phys_len, u32 flags)
 {
 	struct btrfs_fiemap_entry *entry;
 	u64 cache_end;
@@ -2647,7 +2650,7 @@ static int emit_fiemap_extent(struct fiemap_extent_info *fieinfo,
 	 * or equals to what we have in cache->offset. We deal with this as
 	 * described below.
 	 */
-	cache_end = cache->offset + cache->len;
+	cache_end = cache->offset + cache->log_len;
 	if (cache_end > offset) {
 		if (offset == cache->offset) {
 			/*
@@ -2671,10 +2674,10 @@ static int emit_fiemap_extent(struct fiemap_extent_info *fieinfo,
 			 * where a previously found file extent item was split
 			 * due to an ordered extent completing.
 			 */
-			cache->len = offset - cache->offset;
+			cache->log_len = offset - cache->offset;
 			goto emit;
 		} else {
-			const u64 range_end = offset + len;
+			const u64 range_end = offset + log_len;
 
 			/*
 			 * The offset of the file extent item we have just found
@@ -2711,7 +2714,7 @@ static int emit_fiemap_extent(struct fiemap_extent_info *fieinfo,
 				phys += cache_end - offset;
 
 			offset = cache_end;
-			len = range_end - cache_end;
+			log_len = range_end - cache_end;
 			goto emit;
 		}
 	}
@@ -2721,15 +2724,17 @@ static int emit_fiemap_extent(struct fiemap_extent_info *fieinfo,
 	 * 1) Their logical addresses are continuous
 	 *
 	 * 2) Their physical addresses are continuous
-	 *    So truly compressed (physical size smaller than logical size)
-	 *    extents won't get merged with each other
 	 *
 	 * 3) Share same flags
+	 *
+	 * 4) Not compressed
 	 */
-	if (cache->offset + cache->len  == offset &&
-	    cache->phys + cache->len == phys  &&
-	    cache->flags == flags) {
-		cache->len += len;
+	if (cache->offset + cache->log_len  == offset &&
+	    cache->phys + cache->log_len == phys  &&
+	    cache->flags == flags &&
+	    !(flags & FIEMAP_EXTENT_ENCODED)) {
+		cache->log_len += log_len;
+		cache->phys_len += phys_len;
 		return 0;
 	}
 
@@ -2746,7 +2751,7 @@ static int emit_fiemap_extent(struct fiemap_extent_info *fieinfo,
 		 * to miss it.
 		 */
 		entry = &cache->entries[cache->entries_size - 1];
-		cache->next_search_offset = entry->offset + entry->len;
+		cache->next_search_offset = entry->offset + entry->log_len;
 		cache->cached = false;
 
 		return BTRFS_FIEMAP_FLUSH_CACHE;
@@ -2755,7 +2760,8 @@ static int emit_fiemap_extent(struct fiemap_extent_info *fieinfo,
 	entry = &cache->entries[cache->entries_pos];
 	entry->offset = cache->offset;
 	entry->phys = cache->phys;
-	entry->len = cache->len;
+	entry->log_len = cache->log_len;
+	entry->phys_len = cache->phys_len;
 	entry->flags = cache->flags;
 	cache->entries_pos++;
 	cache->extents_mapped++;
@@ -2768,7 +2774,8 @@ static int emit_fiemap_extent(struct fiemap_extent_info *fieinfo,
 	cache->cached = true;
 	cache->offset = offset;
 	cache->phys = phys;
-	cache->len = len;
+	cache->log_len = log_len;
+	cache->phys_len = phys_len;
 	cache->flags = flags;
 
 	return 0;
@@ -2794,7 +2801,8 @@ static int emit_last_fiemap_cache(struct fiemap_extent_info *fieinfo,
 		return 0;
 
 	ret = fiemap_fill_next_extent(fieinfo, cache->offset, cache->phys,
-				      cache->len, cache->flags);
+				      cache->log_len, cache->phys_len,
+				      cache->flags);
 	cache->cached = false;
 	if (ret > 0)
 		ret = 0;
@@ -2988,13 +2996,15 @@ static int fiemap_process_hole(struct btrfs_inode *inode,
 			}
 			ret = emit_fiemap_extent(fieinfo, cache, prealloc_start,
 						 disk_bytenr + extent_offset,
-						 prealloc_len, prealloc_flags);
+						 prealloc_len, prealloc_len,
+						 prealloc_flags);
 			if (ret)
 				return ret;
 			extent_offset += prealloc_len;
 		}
 
 		ret = emit_fiemap_extent(fieinfo, cache, delalloc_start, 0,
+					 delalloc_end + 1 - delalloc_start,
 					 delalloc_end + 1 - delalloc_start,
 					 FIEMAP_EXTENT_DELALLOC |
 					 FIEMAP_EXTENT_UNKNOWN);
@@ -3035,7 +3045,8 @@ static int fiemap_process_hole(struct btrfs_inode *inode,
 		}
 		ret = emit_fiemap_extent(fieinfo, cache, prealloc_start,
 					 disk_bytenr + extent_offset,
-					 prealloc_len, prealloc_flags);
+					 prealloc_len, prealloc_len,
+					 prealloc_flags);
 		if (ret)
 			return ret;
 	}
@@ -3181,6 +3192,7 @@ int extent_fiemap(struct btrfs_inode *inode, struct fiemap_extent_info *fieinfo,
 		u64 extent_offset = 0;
 		u64 extent_gen;
 		u64 disk_bytenr = 0;
+		u64 disk_size = 0;
 		u64 flags = 0;
 		int extent_type;
 		u8 compression;
@@ -3232,8 +3244,9 @@ int extent_fiemap(struct btrfs_inode *inode, struct fiemap_extent_info *fieinfo,
 
 		if (extent_type != BTRFS_FILE_EXTENT_INLINE) {
 			disk_bytenr = btrfs_file_extent_disk_bytenr(leaf, ei);
-			if (compression == BTRFS_COMPRESS_NONE)
+			if (compression == BTRFS_COMPRESS_NONE) {
 				extent_offset = btrfs_file_extent_offset(leaf, ei);
+			}
 		}
 
 		if (compression != BTRFS_COMPRESS_NONE)
@@ -3243,7 +3256,7 @@ int extent_fiemap(struct btrfs_inode *inode, struct fiemap_extent_info *fieinfo,
 			flags |= FIEMAP_EXTENT_DATA_INLINE;
 			flags |= FIEMAP_EXTENT_NOT_ALIGNED;
 			ret = emit_fiemap_extent(fieinfo, &cache, key.offset, 0,
-						 extent_len, flags);
+						 extent_len, extent_len, flags);
 		} else if (extent_type == BTRFS_FILE_EXTENT_PREALLOC) {
 			ret = fiemap_process_hole(inode, fieinfo, &cache,
 						  &delalloc_cached_state,
@@ -3258,6 +3271,7 @@ int extent_fiemap(struct btrfs_inode *inode, struct fiemap_extent_info *fieinfo,
 						  backref_ctx, 0, 0, 0,
 						  key.offset, extent_end - 1);
 		} else {
+			disk_size = btrfs_file_extent_disk_num_bytes(leaf, ei);
 			/* We have a regular extent. */
 			if (fieinfo->fi_extents_max) {
 				ret = btrfs_is_data_extent_shared(inode,
@@ -3272,7 +3286,9 @@ int extent_fiemap(struct btrfs_inode *inode, struct fiemap_extent_info *fieinfo,
 
 			ret = emit_fiemap_extent(fieinfo, &cache, key.offset,
 						 disk_bytenr + extent_offset,
-						 extent_len, flags);
+						 extent_len,
+						 disk_size - extent_offset,
+						 flags);
 		}
 
 		if (ret < 0) {
@@ -3310,7 +3326,7 @@ int extent_fiemap(struct btrfs_inode *inode, struct fiemap_extent_info *fieinfo,
 		prev_extent_end = range_end;
 	}
 
-	if (cache.cached && cache.offset + cache.len >= last_extent_end) {
+	if (cache.cached && cache.offset + cache.log_len >= last_extent_end) {
 		const u64 i_size = i_size_read(&inode->vfs_inode);
 
 		if (prev_extent_end < i_size) {
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 7669d154c05e0c..a96d23db6a3872 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -2215,6 +2215,7 @@ static int ext4_fill_es_cache_info(struct inode *inode,
 				(__u64)es.es_lblk << blksize_bits,
 				(__u64)es.es_pblk << blksize_bits,
 				(__u64)es.es_len << blksize_bits,
+				(__u64)es.es_len << blksize_bits,
 				flags);
 		if (next == 0)
 			break;
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 26e317696b3389..775ae73b6641e1 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1906,7 +1906,8 @@ static int f2fs_xattr_fiemap(struct inode *inode,
 		if (!xnid)
 			flags |= FIEMAP_EXTENT_LAST;
 
-		err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags);
+		err = fiemap_fill_next_extent(
+				fieinfo, 0, phys, len, len, flags);
 		trace_f2fs_fiemap(inode, 0, phys, len, flags, err);
 		if (err)
 			return err;
@@ -1932,7 +1933,8 @@ static int f2fs_xattr_fiemap(struct inode *inode,
 	}
 
 	if (phys) {
-		err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags);
+		err = fiemap_fill_next_extent(
+				fieinfo, 0, phys, len, len, flags);
 		trace_f2fs_fiemap(inode, 0, phys, len, flags, err);
 	}
 
@@ -2051,7 +2053,7 @@ int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 			flags |= FIEMAP_EXTENT_DATA_ENCRYPTED;
 
 		ret = fiemap_fill_next_extent(fieinfo, logical,
-				phys, size, flags);
+				phys, size, size, flags);
 		trace_f2fs_fiemap(inode, logical, phys, size, flags, ret);
 		if (ret)
 			goto out;
diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
index ac00423f117b5c..825b51978c56b9 100644
--- a/fs/f2fs/inline.c
+++ b/fs/f2fs/inline.c
@@ -806,7 +806,8 @@ int f2fs_inline_data_fiemap(struct inode *inode,
 	byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits;
 	byteaddr += (char *)inline_data_addr(inode, ipage) -
 					(char *)F2FS_INODE(ipage);
-	err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags);
+	err = fiemap_fill_next_extent(
+			fieinfo, start, byteaddr, ilen, ilen, flags);
 	trace_f2fs_fiemap(inode, start, byteaddr, ilen, flags, err);
 out:
 	f2fs_put_page(ipage, 1);
diff --git a/fs/ioctl.c b/fs/ioctl.c
index 76cf22ac97d762..4f5e75feec2de5 100644
--- a/fs/ioctl.c
+++ b/fs/ioctl.c
@@ -99,7 +99,8 @@ static int ioctl_fibmap(struct file *filp, int __user *p)
  * @fieinfo:	Fiemap context passed into ->fiemap
  * @logical:	Extent logical start offset, in bytes
  * @phys:	Extent physical start offset, in bytes
- * @len:	Extent length, in bytes
+ * @log_len:	Extent logical length, in bytes
+ * @phys_len:	Extent physical length, in bytes
  * @flags:	FIEMAP_EXTENT flags that describe this extent
  *
  * Called from file system ->fiemap callback. Will populate extent
@@ -110,7 +111,7 @@ static int ioctl_fibmap(struct file *filp, int __user *p)
  * extent that will fit in user array.
  */
 int fiemap_fill_next_extent(struct fiemap_extent_info *fieinfo, u64 logical,
-			    u64 phys, u64 len, u32 flags)
+			    u64 phys, u64 log_len, u64 phys_len, u32 flags)
 {
 	struct fiemap_extent extent;
 	struct fiemap_extent __user *dest = fieinfo->fi_extents_start;
@@ -138,7 +139,8 @@ int fiemap_fill_next_extent(struct fiemap_extent_info *fieinfo, u64 logical,
 	memset(&extent, 0, sizeof(extent));
 	extent.fe_logical = logical;
 	extent.fe_physical = phys;
-	extent.fe_length = len;
+	extent.fe_length = log_len;
+	extent.fe_physical_length = phys_len;
 	extent.fe_flags = flags;
 
 	dest += fieinfo->fi_extents_mapped;
diff --git a/fs/iomap/fiemap.c b/fs/iomap/fiemap.c
index 610ca6f1ec9b6d..30c5f14f908fbc 100644
--- a/fs/iomap/fiemap.c
+++ b/fs/iomap/fiemap.c
@@ -36,7 +36,7 @@ static int iomap_to_fiemap(struct fiemap_extent_info *fi,
 
 	return fiemap_fill_next_extent(fi, iomap->offset,
 			iomap->addr != IOMAP_NULL_ADDR ? iomap->addr : 0,
-			iomap->length, flags);
+			iomap->length, iomap->length, flags);
 }
 
 static loff_t iomap_fiemap_iter(const struct iomap_iter *iter,
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index 9c334c722fc1c1..fc8acfbcfbdf0a 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -1196,7 +1196,8 @@ int nilfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 			if (size) {
 				/* End of the current extent */
 				ret = fiemap_fill_next_extent(
-					fieinfo, logical, phys, size, flags);
+					fieinfo, logical, phys, size, size,
+					flags);
 				if (ret)
 					break;
 			}
@@ -1246,7 +1247,8 @@ int nilfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 					flags |= FIEMAP_EXTENT_LAST;
 
 				ret = fiemap_fill_next_extent(
-					fieinfo, logical, phys, size, flags);
+					fieinfo, logical, phys, size, size,
+					flags);
 				if (ret)
 					break;
 				size = 0;
@@ -1262,7 +1264,7 @@ int nilfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 					/* Terminate the current extent */
 					ret = fiemap_fill_next_extent(
 						fieinfo, logical, phys, size,
-						flags);
+						size, flags);
 					if (ret || blkoff > end_blkoff)
 						break;
 
diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c
index 7f27382e0ce25b..ba443e0b8d2b0d 100644
--- a/fs/ntfs3/frecord.c
+++ b/fs/ntfs3/frecord.c
@@ -1948,6 +1948,7 @@ int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo,
 		err = fiemap_fill_next_extent(
 			fieinfo, 0, 0,
 			attr ? le32_to_cpu(attr->res.data_size) : 0,
+			attr ? le32_to_cpu(attr->res.data_size) : 0,
 			FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_LAST |
 				FIEMAP_EXTENT_MERGED);
 		goto out;
@@ -2042,7 +2043,7 @@ int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo,
 				flags |= FIEMAP_EXTENT_LAST;
 
 			err = fiemap_fill_next_extent(fieinfo, vbo, lbo, dlen,
-						      flags);
+						      dlen, flags);
 			if (err < 0)
 				break;
 			if (err == 1) {
@@ -2062,7 +2063,8 @@ int ni_fiemap(struct ntfs_inode *ni, struct fiemap_extent_info *fieinfo,
 		if (vbo + bytes >= end)
 			flags |= FIEMAP_EXTENT_LAST;
 
-		err = fiemap_fill_next_extent(fieinfo, vbo, lbo, bytes, flags);
+		err = fiemap_fill_next_extent(fieinfo, vbo, lbo, bytes, bytes,
+					      flags);
 		if (err < 0)
 			break;
 		if (err == 1) {
diff --git a/fs/ocfs2/extent_map.c b/fs/ocfs2/extent_map.c
index 70a768b623cf40..553b1695671d6f 100644
--- a/fs/ocfs2/extent_map.c
+++ b/fs/ocfs2/extent_map.c
@@ -723,7 +723,7 @@ static int ocfs2_fiemap_inline(struct inode *inode, struct buffer_head *di_bh,
 					 id2.i_data.id_data);
 
 		ret = fiemap_fill_next_extent(fieinfo, 0, phys, id_count,
-					      flags);
+					      id_count, flags);
 		if (ret < 0)
 			return ret;
 	}
@@ -794,7 +794,7 @@ int ocfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 		virt_bytes = (u64)le32_to_cpu(rec.e_cpos) << osb->s_clustersize_bits;
 
 		ret = fiemap_fill_next_extent(fieinfo, virt_bytes, phys_bytes,
-					      len_bytes, fe_flags);
+					      len_bytes, len_bytes, fe_flags);
 		if (ret)
 			break;
 
diff --git a/fs/smb/client/smb2ops.c b/fs/smb/client/smb2ops.c
index 4695433fcf397f..0d47ea5c440048 100644
--- a/fs/smb/client/smb2ops.c
+++ b/fs/smb/client/smb2ops.c
@@ -3880,6 +3880,7 @@ static int smb3_fiemap(struct cifs_tcon *tcon,
 				le64_to_cpu(out_data[i].file_offset),
 				le64_to_cpu(out_data[i].file_offset),
 				le64_to_cpu(out_data[i].length),
+				le64_to_cpu(out_data[i].length),
 				flags);
 		if (rc < 0)
 			goto out;
diff --git a/include/linux/fiemap.h b/include/linux/fiemap.h
index c50882f19235a2..17a6c32cdf3f6b 100644
--- a/include/linux/fiemap.h
+++ b/include/linux/fiemap.h
@@ -16,6 +16,6 @@ struct fiemap_extent_info {
 int fiemap_prep(struct inode *inode, struct fiemap_extent_info *fieinfo,
 		u64 start, u64 *len, u32 supported_flags);
 int fiemap_fill_next_extent(struct fiemap_extent_info *info, u64 logical,
-			    u64 phys, u64 len, u32 flags);
+			    u64 phys, u64 log_len, u64 phys_len, u32 flags);
 
 #endif /* _LINUX_FIEMAP_H 1 */
diff --git a/include/uapi/linux/fiemap.h b/include/uapi/linux/fiemap.h
index 24ca0c00cae362..fd3c7d380666a1 100644
--- a/include/uapi/linux/fiemap.h
+++ b/include/uapi/linux/fiemap.h
@@ -15,13 +15,23 @@
 #include <linux/types.h>
 
 struct fiemap_extent {
-	__u64 fe_logical;  /* logical offset in bytes for the start of
-			    * the extent from the beginning of the file */
-	__u64 fe_physical; /* physical offset in bytes for the start
-			    * of the extent from the beginning of the disk */
-	__u64 fe_length;   /* length in bytes for this extent */
-	__u64 fe_reserved64[2];
-	__u32 fe_flags;    /* FIEMAP_EXTENT_* flags for this extent */
+	/*
+	 * logical offset in bytes for the start of
+	 * the extent from the beginning of the file
+	 */
+	__u64 fe_logical;
+	/*
+	 * physical offset in bytes for the start
+	 * of the extent from the beginning of the disk
+	 */
+	__u64 fe_physical;
+	/* length in bytes for this extent */
+	__u64 fe_length;
+	/* physical length in bytes for this extent */
+	__u64 fe_physical_length;
+	__u64 fe_reserved64[1];
+	/* FIEMAP_EXTENT_* flags for this extent */
+	__u32 fe_flags;
 	__u32 fe_reserved[3];
 };