1 files changed, 2 insertions, 4 deletions

diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 7397c622fb6a..8e7a78acf81a 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -505,7 +505,6 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
         struct block_device *bdev;
         struct bio *comp_bio;
         u64 cur_disk_byte = (u64)bio->bi_sector << 9;
-        u64 em_len;
         struct extent_map *em;
         int ret;
 
@@ -524,9 +523,8 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
         cb->errors = 0;
         cb->inode = inode;
 
-        cb->start = em->start;
+        cb->start = em->orig_start;
         compressed_len = em->block_len;
-        em_len = em->len;
         free_extent_map(em);
 
         cb->len = uncompressed_len;
@@ -545,7 +543,7 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
         }
         cb->nr_pages = nr_pages;
 
-        add_ra_bio_pages(inode, cb->start + em_len, cb);
+        add_ra_bio_pages(inode, em->start + em->len, cb);
 
         if (!btrfs_test_opt(root, NODATASUM) &&
             !btrfs_test_flag(inode, NODATASUM)) {