[PATCH 2/2] Fix i_state of inode is changed after the inode is freed [try #2]

[Masayuki Saito <m-saito@tnes.nec.co.jp>]

Fix i_state of the inode is changed after the inode is freed.

Signed-off-by: Masayuki Saito <m-saito@tnes.nec.co.jp>
Signed-off-by: ASANO Masahiro <masano@tnes.nec.co.jp>
---

--- linux-2.6.17.7/fs/xfs/xfs_inode.c.orig	2006-08-21 20:15:58.385211286 +0900
+++ linux-2.6.17.7/fs/xfs/xfs_inode.c	2006-08-21 21:21:22.277033371 +0900
@@ -2751,18 +2751,30 @@ xfs_iunpin(
 		 * call as the inode reclaim may be blocked waiting for
 		 * the inode to become unpinned.
 		 */
+		int need_iput = 0;
+		struct inode *inode;
+		spin_lock(&ip->i_flags_lock);
 		if (!(ip->i_flags & (XFS_IRECLAIM|XFS_IRECLAIMABLE))) {
 			vnode_t	*vp = XFS_ITOV_NULL(ip);
 
 			/* make sync come back and flush this inode */
 			if (vp) {
-				struct inode	*inode = vn_to_inode(vp);
+				inode = vn_to_inode(vp);
 
-				if (!(inode->i_state & I_NEW))
-					mark_inode_dirty_sync(inode);
+				if (!(inode->i_state &
+						(I_NEW|I_FREEING|I_CLEAR))) {
+					inode = igrab(inode);
+					if (inode) {
+						need_iput = 1;
+						mark_inode_dirty_sync(inode);
+					}
+				}
 			}
 		}
+		spin_unlock(&ip->i_flags_lock);
 		wake_up(&ip->i_ipin_wait);
+		if (need_iput)
+			iput(inode);
 	}
 }
-
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