diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 68bf2af6c3895..de7690eec4d86 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -72,7 +72,7 @@ int v9fs_file_open(struct inode *inode, struct file *file)
 			return err;
 		}
 		if (omode & P9_OTRUNC) {
-			inode->i_size = 0;
+			i_size_write(inode, 0);
 			inode->i_blocks = 0;
 		}
 		if ((file->f_flags & O_APPEND) && (!v9fs_extended(v9ses)))
@@ -239,9 +239,9 @@ v9fs_file_write(struct file *filp, const char __user * data,
 		*offset += total;
 	}
 
-	if (*offset > inode->i_size) {
-		inode->i_size = *offset;
-		inode->i_blocks = (inode->i_size + 512 - 1) >> 9;
+	if (*offset > i_size_read(inode)) {
+		i_size_write(inode, *offset);
+		inode->i_blocks = (i_size_read(inode) + 512 - 1) >> 9;
 	}
 
 	if (n < 0)
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 06a223d50a816..f3bfa87926bd1 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -872,10 +872,10 @@ v9fs_stat2inode(struct p9_wstat *stat, struct inode *inode,
 	} else
 		inode->i_rdev = 0;
 
-	inode->i_size = stat->length;
+	i_size_write(inode, stat->length);
 
 	/* not real number of blocks, but 512 byte ones ... */
-	inode->i_blocks = (inode->i_size + 512 - 1) >> 9;
+	inode->i_blocks = (i_size_read(inode) + 512 - 1) >> 9;
 }
 
 /**