ocfs2: add functions to add and remove inode in orphan dir

Add functions to add inode to orphan dir and remove inode in orphan dir.
Here we do not call ocfs2_prepare_orphan_dir and ocfs2_orphan_add
directly.  Because append O_DIRECT will add inode to orphan two and may
result in more than one orphan entry for the same inode.

[akpm@linux-foundation.org: avoid dynamic stack allocation]
Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Cc: Weiwei Wang <wangww631@huawei.com>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Xuejiufei <xuejiufei@huawei.com>
Cc: alex chen <alex.chen@huawei.com>
Cc: Fengguang Wu <fengguang.wu@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h
index 938387a10d5d..cf4fa43af78e 100644
--- a/fs/ocfs2/ocfs2_fs.h
+++ b/fs/ocfs2/ocfs2_fs.h
@@ -229,6 +229,8 @@
 #define OCFS2_CHAIN_FL          (0x00000400)    /* Chain allocator */
 #define OCFS2_DEALLOC_FL        (0x00000800)    /* Truncate log */
 #define OCFS2_QUOTA_FL          (0x00001000)    /* Quota file */
+#define OCFS2_DIO_ORPHANED_FL   (0X00002000)    /* On the orphan list especially
+                                                 * for dio */
 
 /*
  * Flags on ocfs2_dinode.i_dyn_features
@@ -729,7 +731,9 @@ struct ocfs2_dinode {
                                            inode belongs to.  Only valid
                                            if allocated from a
                                            discontiguous block group */
-/*A0*/  __le64 i_reserved2[3];
+/*A0*/  __le16 i_dio_orphaned_slot;     /* only used for append dio write */
+        __le16 i_reserved1[3];
+        __le64 i_reserved2[2];
 /*B8*/  union {
                 __le64 i_pad1;          /* Generic way to refer to this
                                            64bit union */