merge linus into release branch

Conflicts:

	drivers/acpi/acpi_memhotplug.c

14 files changed, 34 insertions, 36 deletions

diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c
index 3e807b828e22..c40f81ba9b13 100644
--- a/fs/xfs/linux-2.6/xfs_aops.c
+++ b/fs/xfs/linux-2.6/xfs_aops.c
@@ -1454,7 +1454,7 @@ xfs_vm_invalidatepage(
 	block_invalidatepage(page, offset);
 }
 
-struct address_space_operations xfs_address_space_operations = {
+const struct address_space_operations xfs_address_space_operations = {
 	.readpage		= xfs_vm_readpage,
 	.readpages		= xfs_vm_readpages,
 	.writepage		= xfs_vm_writepage,
diff --git a/fs/xfs/linux-2.6/xfs_aops.h b/fs/xfs/linux-2.6/xfs_aops.h
index 706d8c781b8a..2244e516b66a 100644
--- a/fs/xfs/linux-2.6/xfs_aops.h
+++ b/fs/xfs/linux-2.6/xfs_aops.h
@@ -40,7 +40,7 @@ typedef struct xfs_ioend {
 	struct work_struct	io_work;	/* xfsdatad work queue */
 } xfs_ioend_t;
 
-extern struct address_space_operations xfs_address_space_operations;
+extern const struct address_space_operations xfs_address_space_operations;
 extern int xfs_get_blocks(struct inode *, sector_t, struct buffer_head *, int);
 
 #endif /* __XFS_AOPS_H__ */
diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index 26fed0756f01..2af528dcfb04 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -1520,7 +1520,7 @@ xfs_mapping_buftarg(
 	struct backing_dev_info	*bdi;
 	struct inode		*inode;
 	struct address_space	*mapping;
-	static struct address_space_operations mapping_aops = {
+	static const struct address_space_operations mapping_aops = {
 		.sync_page = block_sync_page,
 		.migratepage = fail_migrate_page,
 	};
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index 12810baeb5d4..d9180020de63 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -419,16 +419,15 @@ xfs_vn_link(
 	int		error;
 
 	ip = old_dentry->d_inode;	/* inode being linked to */
-	if (S_ISDIR(ip->i_mode))
-		return -EPERM;
-
 	tdvp = vn_from_inode(dir);
 	vp = vn_from_inode(ip);
 
+	VN_HOLD(vp);
 	error = bhv_vop_link(tdvp, vp, dentry, NULL);
-	if (likely(!error)) {
+	if (unlikely(error)) {
+		VN_RELE(vp);
+	} else {
 		VMODIFY(tdvp);
-		VN_HOLD(vp);
 		xfs_validate_fields(ip, &vattr);
 		d_instantiate(dentry, ip);
 	}
diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h
index aa26ab906c88..028eb17ec2ed 100644
--- a/fs/xfs/linux-2.6/xfs_linux.h
+++ b/fs/xfs/linux-2.6/xfs_linux.h
@@ -140,9 +140,7 @@ BUFFER_FNS(PrivateStart, unwritten);
 #define current_pid()		(current->pid)
 #define current_fsuid(cred)	(current->fsuid)
 #define current_fsgid(cred)	(current->fsgid)
-#define current_set_flags(f)	(current->flags |= (f))
 #define current_test_flags(f)	(current->flags & (f))
-#define current_clear_flags(f)	(current->flags & ~(f))
 #define current_set_flags_nested(sp, f)		\
 		(*(sp) = current->flags, current->flags |= (f))
 #define current_clear_flags_nested(sp, f)	\
diff --git a/fs/xfs/linux-2.6/xfs_vnode.h b/fs/xfs/linux-2.6/xfs_vnode.h
index 35c6a01963a7..c42b3221b20c 100644
--- a/fs/xfs/linux-2.6/xfs_vnode.h
+++ b/fs/xfs/linux-2.6/xfs_vnode.h
@@ -93,7 +93,7 @@ typedef enum {
  */
 static inline struct bhv_vnode *vn_from_inode(struct inode *inode)
 {
-	return (bhv_vnode_t *)list_entry(inode, bhv_vnode_t, v_inode);
+	return container_of(inode, bhv_vnode_t, v_inode);
 }
 static inline struct inode *vn_to_inode(struct bhv_vnode *vnode)
 {
diff --git a/fs/xfs/xfs_behavior.h b/fs/xfs/xfs_behavior.h
index 1d8ff103201c..6e6e56fb352d 100644
--- a/fs/xfs/xfs_behavior.h
+++ b/fs/xfs/xfs_behavior.h
@@ -78,15 +78,12 @@
  *
  */
 
-struct bhv_head_lock;
-
 /*
  * Behavior head.  Head of the chain of behaviors.
  * Contained within each virtualized object data structure.
  */
 typedef struct bhv_head {
 	struct bhv_desc *bh_first;	/* first behavior in chain */
-	struct bhv_head_lock *bh_lockp;	/* pointer to lock info struct */
 } bhv_head_t;
 
 /*
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 5fa0adb7e173..86c1bf0bba9e 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -1961,9 +1961,9 @@ xfs_iunlink_remove(
 	xfs_agino_t	agino;
 	xfs_agino_t	next_agino;
 	xfs_buf_t	*last_ibp;
-	xfs_dinode_t	*last_dip;
+	xfs_dinode_t	*last_dip = NULL;
 	short		bucket_index;
-	int		offset, last_offset;
+	int		offset, last_offset = 0;
 	int		error;
 	int		agi_ok;
 
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index d8f5d4cbe8b7..e730328636c3 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -1740,10 +1740,10 @@ xlog_write(xfs_mount_t *	mp,
 	   xlog_in_core_t	**commit_iclog,
 	   uint			flags)
 {
-    xlog_t	     *log    = mp->m_log;
+    xlog_t	     *log = mp->m_log;
     xlog_ticket_t    *ticket = (xlog_ticket_t *)tic;
+    xlog_in_core_t   *iclog = NULL;  /* ptr to current in-core log */
     xlog_op_header_t *logop_head;    /* ptr to log operation header */
-    xlog_in_core_t   *iclog;	     /* ptr to current in-core log */
     __psint_t	     ptr;	     /* copy address into data region */
     int		     len;	     /* # xlog_write() bytes 2 still copy */
     int		     index;	     /* region index currently copying */
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index 55b4237c2153..3cb678e3a132 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -990,6 +990,8 @@ xlog_find_zeroed(
 	xfs_daddr_t     num_scan_bblks;
 	int	        error, log_bbnum = log->l_logBBsize;
 
+	*blk_no = 0;
+
 	/* check totally zeroed log */
 	bp = xlog_get_bp(log, 1);
 	if (!bp)
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index 10dbf203c62f..4be5c0b2d296 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -1721,15 +1721,14 @@ xfs_mount_log_sbunit(
  * is present to prevent thrashing).
  */
 
+#ifdef CONFIG_HOTPLUG_CPU
 /*
  * hot-plug CPU notifier support.
  *
- * We cannot use the hotcpu_register() function because it does
- * not allow notifier instances. We need a notifier per filesystem
- * as we need to be able to identify the filesystem to balance
- * the counters out. This is achieved by having a notifier block
- * embedded in the xfs_mount_t and doing pointer magic to get the
- * mount pointer from the notifier block address.
+ * We need a notifier per filesystem as we need to be able to identify
+ * the filesystem to balance the counters out. This is achieved by
+ * having a notifier block embedded in the xfs_mount_t and doing pointer
+ * magic to get the mount pointer from the notifier block address.
  */
 STATIC int
 xfs_icsb_cpu_notify(
@@ -1779,6 +1778,7 @@ xfs_icsb_cpu_notify(
 
 	return NOTIFY_OK;
 }
+#endif /* CONFIG_HOTPLUG_CPU */
 
 int
 xfs_icsb_init_counters(
@@ -1791,9 +1791,11 @@ xfs_icsb_init_counters(
 	if (mp->m_sb_cnts == NULL)
 		return -ENOMEM;
 
+#ifdef CONFIG_HOTPLUG_CPU
 	mp->m_icsb_notifier.notifier_call = xfs_icsb_cpu_notify;
 	mp->m_icsb_notifier.priority = 0;
-	register_cpu_notifier(&mp->m_icsb_notifier);
+	register_hotcpu_notifier(&mp->m_icsb_notifier);
+#endif /* CONFIG_HOTPLUG_CPU */
 
 	for_each_online_cpu(i) {
 		cntp = (xfs_icsb_cnts_t *)per_cpu_ptr(mp->m_sb_cnts, i);
@@ -1812,7 +1814,7 @@ xfs_icsb_destroy_counters(
 	xfs_mount_t	*mp)
 {
 	if (mp->m_sb_cnts) {
-		unregister_cpu_notifier(&mp->m_icsb_notifier);
+		unregister_hotcpu_notifier(&mp->m_icsb_notifier);
 		free_percpu(mp->m_sb_cnts);
 	}
 }
@@ -2026,7 +2028,7 @@ xfs_icsb_balance_counter(
 	xfs_sb_field_t  field,
 	int		flags)
 {
-	uint64_t	count, resid = 0;
+	uint64_t	count, resid;
 	int		weight = num_online_cpus();
 	int		s;
 
@@ -2058,6 +2060,7 @@ xfs_icsb_balance_counter(
 		break;
 	default:
 		BUG();
+		count = resid = 0;	/* quiet, gcc */
 		break;
 	}
 
diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c
index 0c1e42b037ef..5a0b678956e0 100644
--- a/fs/xfs/xfs_rtalloc.c
+++ b/fs/xfs/xfs_rtalloc.c
@@ -1929,7 +1929,7 @@ xfs_growfs_rt(
 	/*
 	 * Initial error checking.
 	 */
-	if (mp->m_rtdev_targp || mp->m_rbmip == NULL ||
+	if (mp->m_rtdev_targp == NULL || mp->m_rbmip == NULL ||
 	    (nrblocks = in->newblocks) <= sbp->sb_rblocks ||
 	    (sbp->sb_rblocks && (in->extsize != sbp->sb_rextsize)))
 		return XFS_ERROR(EINVAL);
diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
index cb65c3a603f5..9dc88b380608 100644
--- a/fs/xfs/xfs_trans.h
+++ b/fs/xfs/xfs_trans.h
@@ -338,8 +338,6 @@ typedef void (*xfs_trans_callback_t)(struct xfs_trans *, void *);
 typedef struct xfs_trans {
 	unsigned int		t_magic;	/* magic number */
 	xfs_log_callback_t	t_logcb;	/* log callback struct */
-	struct xfs_trans	*t_forw;	/* async list pointers */
-	struct xfs_trans	*t_back;	/* async list pointers */
 	unsigned int		t_type;		/* transaction type */
 	unsigned int		t_log_res;	/* amt of log space resvd */
 	unsigned int		t_log_count;	/* count for perm log res */
@@ -364,9 +362,11 @@ typedef struct xfs_trans {
 	long			t_res_fdblocks_delta; /* on-disk only chg */
 	long			t_frextents_delta;/* superblock freextents chg*/
 	long			t_res_frextents_delta; /* on-disk only chg */
+#ifdef DEBUG
 	long			t_ag_freeblks_delta; /* debugging counter */
 	long			t_ag_flist_delta; /* debugging counter */
 	long			t_ag_btree_delta; /* debugging counter */
+#endif
 	long			t_dblocks_delta;/* superblock dblocks change */
 	long			t_agcount_delta;/* superblock agcount change */
 	long			t_imaxpct_delta;/* superblock imaxpct change */
diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index 00a6b7dc24a0..23cfa5837728 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -2603,8 +2603,7 @@ xfs_link(
 	vn_trace_entry(src_vp, __FUNCTION__, (inst_t *)__return_address);
 
 	target_namelen = VNAMELEN(dentry);
-	if (VN_ISDIR(src_vp))
-		return XFS_ERROR(EPERM);
+	ASSERT(!VN_ISDIR(src_vp));
 
 	sip = xfs_vtoi(src_vp);
 	tdp = XFS_BHVTOI(target_dir_bdp);
@@ -2699,9 +2698,8 @@ xfs_link(
 	xfs_trans_log_inode(tp, tdp, XFS_ILOG_CORE);
 
 	error = xfs_bumplink(tp, sip);
-	if (error) {
+	if (error)
 		goto abort_return;
-	}
 
 	/*
 	 * If this is a synchronous mount, make sure that the
@@ -2719,9 +2717,8 @@ xfs_link(
 	}
 
 	error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES, NULL);
-	if (error) {
+	if (error)
 		goto std_return;
-	}
 
 	/* Fall through to std_return with error = 0. */
 std_return:
@@ -2742,6 +2739,8 @@ std_return:
 	xfs_trans_cancel(tp, cancel_flags);
 	goto std_return;
 }
+
+
 /*
  * xfs_mkdir
  *