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-rw-r--r--fs/hfs/inode.c17
1 files changed, 16 insertions, 1 deletions
diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
index 14f5cb1..07b2464 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,
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