ocfs2: truncate outstanding block after direct io failure

Signed-off-by: Dmitri Monakhov <dmonakhov@openvz.org>
Cc: Jeff Moyer <jmoyer@redhat.com>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Cc: Joel Becker <Joel.Becker@oracle.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>

diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 3138a385fdbb3383a3391b1a7dca62242aa567e1..e2570a3bc2b202e2abb833be86ffc7750cc635c7 100644 (file)
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -1866,6 +1866,13 @@ relock:
                written = generic_file_direct_write(iocb, iov, &nr_segs, *ppos,
                                                    ppos, count, ocount);
                if (written < 0) {
+                       /*
+                        * direct write may have instantiated a few
+                        * blocks outside i_size. Trim these off again.
+                        * Don't need i_size_read because we hold i_mutex.
+                        */
+                       if (*ppos + count > inode->i_size)
+                               vmtruncate(inode, inode->i_size);
                        ret = written;
                        goto out_dio;
                }