diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 2603c47f5789..3c11982d73f7 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -453,7 +453,6 @@ static noinline void compress_file_range(struct inode *inode,
 	struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
 	u64 blocksize = fs_info->sectorsize;
 	u64 actual_end;
-	u64 isize = i_size_read(inode);
 	int ret = 0;
 	struct page **pages = NULL;
 	unsigned long nr_pages;
@@ -467,7 +466,7 @@ static noinline void compress_file_range(struct inode *inode,
 	inode_should_defrag(BTRFS_I(inode), start, end, end - start + 1,
 			SZ_16K);
 
-	actual_end = min_t(u64, isize, end + 1);
+	actual_end = min_t(u64, i_size_read(inode), end + 1);
 again:
 	will_compress = 0;
 	nr_pages = (end >> PAGE_SHIFT) - (start >> PAGE_SHIFT) + 1;