X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=fs%2Fxfs%2Fxfs_inode.c;h=94b60dd03801ba4ef4638ab0ffe50219a0170338;hb=99532559dc7a8e686b2cef14c780a7ad5dbd4a31;hp=48146bdc6bdde8bff1a17533d2019d21cd0f535f;hpb=c41564b5af328ea4600b26119f6c9c8e1eb5c28b;p=linux-2.6-omap-h63xx.git

diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 48146bdc6bd..94b60dd0380 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -2732,16 +2732,29 @@ xfs_iunpin(
 	ASSERT(atomic_read(&ip->i_pincount) > 0);
 
 	if (atomic_dec_and_test(&ip->i_pincount)) {
-		vnode_t	*vp = XFS_ITOV_NULL(ip);
+		/*
+		 * If the inode is currently being reclaimed, the
+		 * linux inode _and_ the xfs vnode may have been
+		 * freed so we cannot reference either of them safely.
+		 * Hence we should not try to do anything to them
+		 * if the xfs inode is currently in the reclaim
+		 * path.
+		 *
+		 * However, we still need to issue the unpin wakeup
+		 * call as the inode reclaim may be blocked waiting for
+		 * the inode to become unpinned.
+		 */
+		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);
+			/* make sync come back and flush this inode */
+			if (vp) {
+				struct inode	*inode = vn_to_inode(vp);
 
-			if (!(inode->i_state & I_NEW))
-				mark_inode_dirty_sync(inode);
+				if (!(inode->i_state & I_NEW))
+					mark_inode_dirty_sync(inode);
+			}
 		}
-
 		wake_up(&ip->i_ipin_wait);
 	}
 }