[XFS] fix handling of bad inodes

SGI Modid: xfs-linux:xfs-kern:179634a
Signed-off-by: Nathan Scott <nathans@sgi.com>

fs/xfs/linux-2.6/xfs_iops.c

@@ -174,8 +174,9 @@ linvfs_mknod(
 				 */
 				teardown.d_inode = ip = LINVFS_GET_IP(vp);
 				teardown.d_name = dentry->d_name;
-				remove_inode_hash(ip);
-				make_bad_inode(ip);
+
+				vn_mark_bad(vp);
+				
 				if (S_ISDIR(mode))
 					VOP_RMDIR(dvp, &teardown, NULL, err2);
 				else

fs/xfs/linux-2.6/xfs_super.c

@@ -141,7 +141,7 @@ xfs_set_inodeops(
 	vnode_t			*vp = LINVFS_GET_VP(inode);
 
 	if (vp->v_type == VNON) {
-		make_bad_inode(inode);
+		vn_mark_bad(vp);
 	} else if (S_ISREG(inode->i_mode)) {
 		inode->i_op = &linvfs_file_inode_operations;
 		inode->i_fop = &linvfs_file_operations;
@@ -223,20 +223,16 @@ xfs_initialize_vnode(
 		bhv_insert(VN_BHV_HEAD(vp), inode_bhv);
 	}
 
-	vp->v_type = IFTOVT(ip->i_d.di_mode);
-
-	/* Have we been called during the new inode create process,
-	 * in which case we are too early to fill in the Linux inode.
+	/*
+	 * We need to set the ops vectors, and unlock the inode, but if
+	 * we have been called during the new inode create process, it is
+	 * too early to fill in the Linux inode.  We will get called a
+	 * second time once the inode is properly set up, and then we can
+	 * finish our work.
 	 */
-	if (vp->v_type == VNON)
-		return;
-
+	if (ip->i_d.di_mode != 0 && unlock && (inode->i_state & I_NEW)) {
+		vp->v_type = IFTOVT(ip->i_d.di_mode);
 		xfs_revalidate_inode(XFS_BHVTOM(bdp), vp, ip);
-
-	/* For new inodes we need to set the ops vectors,
-	 * and unlock the inode.
-	 */
-	if (unlock && (inode->i_state & I_NEW)) {
 		xfs_set_inodeops(inode);
 		unlock_new_inode(inode);
 	}

fs/xfs/linux-2.6/xfs_vnode.h

@@ -594,6 +594,19 @@ static __inline__ void vn_flagclr(struct vnode *vp, uint flag)
 #define VN_ATIMESET(vp, tvp)	(LINVFS_GET_IP(vp)->i_atime = *(tvp))
 #define VN_CTIMESET(vp, tvp)	(LINVFS_GET_IP(vp)->i_ctime = *(tvp))
 
+/*
+ * Dealing with bad inodes
+ */
+static inline void vn_mark_bad(struct vnode *vp)
+{
+	make_bad_inode(LINVFS_GET_IP(vp));
+}
+
+static inline int VN_BAD(struct vnode *vp)
+{
+	return is_bad_inode(LINVFS_GET_IP(vp));
+}
+
 /*
  * Some useful predicates.
  */

fs/xfs/xfs_iget.c

@@ -457,7 +457,7 @@ xfs_iget(
 			error = xfs_iget_core(vp, mp, tp, ino,
 						lock_flags, ipp, bno);
 			if (error) {
-				make_bad_inode(inode);
+				vn_mark_bad(vp);
 				if (inode->i_state & I_NEW)
 					unlock_new_inode(inode);
 				iput(inode);
@@ -576,11 +576,8 @@ xfs_iput_new(xfs_inode_t	*ip,
 
 	vn_trace_entry(vp, "xfs_iput_new", (inst_t *)__return_address);
 
-	/* We shouldn't get here without this being true, but just in case */
-	if (inode->i_state & I_NEW) {
-		make_bad_inode(inode);
+	if (inode->i_state & I_NEW)
 		unlock_new_inode(inode);
-	}
 	if (lock_flags)
 		xfs_iunlock(ip, lock_flags);
 	VN_RELE(vp);

fs/xfs/xfs_vfsops.c

@@ -1055,6 +1055,11 @@ xfs_sync_inodes(
 			continue;
 		}
 
+		if (VN_BAD(vp)) {
+			ip = ip->i_mnext;
+			continue;
+		}
+
 		if (XFS_FORCED_SHUTDOWN(mp) && !(flags & SYNC_CLOSE)) {
 			XFS_MOUNT_IUNLOCK(mp);
 			kmem_free(ipointer, sizeof(xfs_iptr_t));

fs/xfs/xfs_vnodeops.c

@@ -1611,7 +1611,7 @@ xfs_inactive(
 	 * If the inode is already free, then there can be nothing
 	 * to clean up here.
 	 */
-	if (ip->i_d.di_mode == 0) {
+	if (ip->i_d.di_mode == 0 || VN_BAD(vp)) {
 		ASSERT(ip->i_df.if_real_bytes == 0);
 		ASSERT(ip->i_df.if_broot_bytes == 0);
 		return VN_INACTIVE_CACHE;
@@ -3808,11 +3808,17 @@ xfs_reclaim(
 	vnode_t		*vp;
 
 	vp = BHV_TO_VNODE(bdp);
+	ip = XFS_BHVTOI(bdp);
 
 	vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address);
 
 	ASSERT(!VN_MAPPED(vp));
-	ip = XFS_BHVTOI(bdp);
+
+	/* bad inode, get out here ASAP */
+	if (VN_BAD(vp)) {
+		xfs_ireclaim(ip);
+		return 0;
+	}
 
 	if ((ip->i_d.di_mode & S_IFMT) == S_IFREG) {
 		if (ip->i_d.di_size > 0) {
@@ -3890,8 +3896,12 @@ xfs_finish_reclaim(
 	int		sync_mode)
 {
 	xfs_ihash_t	*ih = ip->i_hash;
+	vnode_t		*vp = XFS_ITOV_NULL(ip);
 	int		error;
 
+	if (vp && VN_BAD(vp))
+		return 0;
+
 	/* The hash lock here protects a thread in xfs_iget_core from
 	 * racing with us on linking the inode back with a vnode.
 	 * Once we have the XFS_IRECLAIM flag set it will not touch
@@ -3899,8 +3909,7 @@ xfs_finish_reclaim(
 	 */
 	write_lock(&ih->ih_lock);
 	if ((ip->i_flags & XFS_IRECLAIM) ||
-	    (!(ip->i_flags & XFS_IRECLAIMABLE) &&
-	      (XFS_ITOV_NULL(ip) == NULL))) {
+	    (!(ip->i_flags & XFS_IRECLAIMABLE) && vp == NULL)) {
 		write_unlock(&ih->ih_lock);
 		if (locked) {
 			xfs_ifunlock(ip);