1 files changed, 16 insertions, 1 deletions

diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
index 14f5cb1b9fdc..07b2464b5716 100644
--- a/fs/hfs/inode.c
+++ b/fs/hfs/inode.c
@@ -112,9 +112,24 @@ static ssize_t hfs_direct_IO(int rw, struct kiocb *iocb,
 {
         struct file *file = iocb->ki_filp;
         struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host;
+        ssize_t ret;
 
-        return blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
+        ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
                                   offset, nr_segs, hfs_get_block, NULL);
+
+        /*
+         * In case of error extending write may have instantiated a few
+         * blocks outside i_size. Trim these off again.
+         */
+        if (unlikely((rw & WRITE) && ret < 0)) {
+                loff_t isize = i_size_read(inode);
+                loff_t end = offset + iov_length(iov, nr_segs);
+
+                if (end > isize)
+                        vmtruncate(inode, isize);
+        }
+
+        return ret;
 }
 
 static int hfs_writepages(struct address_space *mapping,