Merge branch 'akpm' (incoming from Andrew)

Merge misc patches from Andrew Morton:

 - Florian has vanished so I appear to have become fbdev maintainer
   again :(

 - Joel and Mark are distracted to welcome to the new OCFS2 maintainer

 - The backlight queue

 - Small core kernel changes

 - lib/ updates

 - The rtc queue

 - Various random bits

* akpm: (164 commits)
  rtc: rtc-davinci: use devm_*() functions
  rtc: rtc-max8997: use devm_request_threaded_irq()
  rtc: rtc-max8907: use devm_request_threaded_irq()
  rtc: rtc-da9052: use devm_request_threaded_irq()
  rtc: rtc-wm831x: use devm_request_threaded_irq()
  rtc: rtc-tps80031: use devm_request_threaded_irq()
  rtc: rtc-lp8788: use devm_request_threaded_irq()
  rtc: rtc-coh901331: use devm_clk_get()
  rtc: rtc-vt8500: use devm_*() functions
  rtc: rtc-tps6586x: use devm_request_threaded_irq()
  rtc: rtc-imxdi: use devm_clk_get()
  rtc: rtc-cmos: use dev_warn()/dev_dbg() instead of printk()/pr_debug()
  rtc: rtc-pcf8583: use dev_warn() instead of printk()
  rtc: rtc-sun4v: use pr_warn() instead of printk()
  rtc: rtc-vr41xx: use dev_info() instead of printk()
  rtc: rtc-rs5c313: use pr_err() instead of printk()
  rtc: rtc-at91rm9200: use dev_dbg()/dev_err() instead of printk()/pr_debug()
  rtc: rtc-rs5c372: use dev_dbg()/dev_warn() instead of printk()/pr_debug()
  rtc: rtc-ds2404: use dev_err() instead of printk()
  rtc: rtc-efi: use dev_err()/dev_warn()/pr_err() instead of printk()
  ...

fs/9p/vfs_file.c

@@ -616,6 +616,7 @@ v9fs_vm_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
 	lock_page(page);
 	if (page->mapping != inode->i_mapping)
 		goto out_unlock;
+	wait_for_stable_page(page);
 
 	return VM_FAULT_LOCKED;
 out_unlock:

fs/binfmt_elf.c

@@ -1249,7 +1249,7 @@ static int writenote(struct memelfnote *men, struct file *file,
 #undef DUMP_WRITE
 
 static void fill_elf_header(struct elfhdr *elf, int segs,
-			    u16 machine, u32 flags, u8 osabi)
+			    u16 machine, u32 flags)
 {
 	memset(elf, 0, sizeof(*elf));
 
@@ -1634,7 +1634,7 @@ static int fill_note_info(struct elfhdr *elf, int phdrs,
 	 * Initialize the ELF file header.
 	 */
 	fill_elf_header(elf, phdrs,
-			view->e_machine, view->e_flags, view->ei_osabi);
+			view->e_machine, view->e_flags);
 
 	/*
 	 * Allocate a structure for each thread.
@@ -1874,7 +1874,7 @@ static int fill_note_info(struct elfhdr *elf, int phdrs,
 	elf_core_copy_regs(&info->prstatus->pr_reg, regs);
 
 	/* Set up header */
-	fill_elf_header(elf, phdrs, ELF_ARCH, ELF_CORE_EFLAGS, ELF_OSABI);
+	fill_elf_header(elf, phdrs, ELF_ARCH, ELF_CORE_EFLAGS);
 
 	/*
 	 * Set up the notes in similar form to SVR4 core dumps made

fs/block_dev.c

@@ -994,6 +994,7 @@ int revalidate_disk(struct gendisk *disk)
 
 	mutex_lock(&bdev->bd_mutex);
 	check_disk_size_change(disk, bdev);
+	bdev->bd_invalidated = 0;
 	mutex_unlock(&bdev->bd_mutex);
 	bdput(bdev);
 	return ret;

fs/buffer.c

@@ -2359,7 +2359,7 @@ int __block_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf,
 	if (unlikely(ret < 0))
 		goto out_unlock;
 	set_page_dirty(page);
-	wait_on_page_writeback(page);
+	wait_for_stable_page(page);
 	return 0;
 out_unlock:
 	unlock_page(page);

fs/configfs/dir.c

@@ -1037,10 +1037,11 @@ static int configfs_dump(struct configfs_dirent *sd, int level)
 static int configfs_depend_prep(struct dentry *origin,
 				struct config_item *target)
 {
-	struct configfs_dirent *child_sd, *sd = origin->d_fsdata;
+	struct configfs_dirent *child_sd, *sd;
 	int ret = 0;
 
-	BUG_ON(!origin || !sd);
+	BUG_ON(!origin || !origin->d_fsdata);
+	sd = origin->d_fsdata;
 
 	if (sd->s_element == target)  /* Boo-yah */
 		goto out;

fs/ext3/super.c

@@ -2065,6 +2065,7 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
 		test_opt(sb,DATA_FLAGS) == EXT3_MOUNT_JOURNAL_DATA ? "journal":
 		test_opt(sb,DATA_FLAGS) == EXT3_MOUNT_ORDERED_DATA ? "ordered":
 		"writeback");
+	sb->s_flags |= MS_SNAP_STABLE;
 
 	return 0;
 

fs/ext4/inode.c

@@ -4968,7 +4968,7 @@ int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
 					    0, len, NULL,
 					    ext4_bh_unmapped)) {
 			/* Wait so that we don't change page under IO */
-			wait_on_page_writeback(page);
+			wait_for_stable_page(page);
 			ret = VM_FAULT_LOCKED;
 			goto out;
 		}

fs/gfs2/file.c

@@ -483,7 +483,7 @@ out:
 	gfs2_holder_uninit(&gh);
 	if (ret == 0) {
 		set_page_dirty(page);
-		wait_on_page_writeback(page);
+		wait_for_stable_page(page);
 	}
 	sb_end_pagefault(inode->i_sb);
 	return block_page_mkwrite_return(ret);

fs/nilfs2/file.c

@@ -126,7 +126,7 @@ static int nilfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
 	nilfs_transaction_commit(inode->i_sb);
 
  mapped:
-	wait_on_page_writeback(page);
+	wait_for_stable_page(page);
  out:
 	sb_end_pagefault(inode->i_sb);
 	return block_page_mkwrite_return(ret);

fs/notify/inotify/inotify_user.c

@@ -576,8 +576,6 @@ static int inotify_update_existing_watch(struct fsnotify_group *group,
 
 	/* don't allow invalid bits: we don't want flags set */
 	mask = inotify_arg_to_mask(arg);
-	if (unlikely(!(mask & IN_ALL_EVENTS)))
-		return -EINVAL;
 
 	fsn_mark = fsnotify_find_inode_mark(group, inode);
 	if (!fsn_mark)
@@ -629,8 +627,6 @@ static int inotify_new_watch(struct fsnotify_group *group,
 
 	/* don't allow invalid bits: we don't want flags set */
 	mask = inotify_arg_to_mask(arg);
-	if (unlikely(!(mask & IN_ALL_EVENTS)))
-		return -EINVAL;
 
 	tmp_i_mark = kmem_cache_alloc(inotify_inode_mark_cachep, GFP_KERNEL);
 	if (unlikely(!tmp_i_mark))

fs/ocfs2/alloc.c

@@ -6751,8 +6751,7 @@ int ocfs2_zero_range_for_truncate(struct inode *inode, handle_t *handle,
 		mlog_errno(ret);
 
 out:
-	if (pages)
-		kfree(pages);
+	kfree(pages);
 
 	return ret;
 }

fs/ocfs2/aops.c

@@ -1194,6 +1194,7 @@ static int ocfs2_grab_pages_for_write(struct address_space *mapping,
 				goto out;
 			}
 		}
+		wait_for_stable_page(wc->w_pages[i]);
 
 		if (index == target_index)
 			wc->w_target_page = wc->w_pages[i];

fs/ocfs2/cluster/heartbeat.c

@@ -1471,8 +1471,7 @@ static void o2hb_region_release(struct config_item *item)
 
 	mlog(ML_HEARTBEAT, "hb region release (%s)\n", reg->hr_dev_name);
 
-	if (reg->hr_tmp_block)
-		kfree(reg->hr_tmp_block);
+	kfree(reg->hr_tmp_block);
 
 	if (reg->hr_slot_data) {
 		for (i = 0; i < reg->hr_num_pages; i++) {
@@ -1486,8 +1485,7 @@ static void o2hb_region_release(struct config_item *item)
 	if (reg->hr_bdev)
 		blkdev_put(reg->hr_bdev, FMODE_READ|FMODE_WRITE);
 
-	if (reg->hr_slots)
-		kfree(reg->hr_slots);
+	kfree(reg->hr_slots);
 
 	kfree(reg->hr_db_regnum);
 	kfree(reg->hr_db_livenodes);

fs/ocfs2/cluster/tcp.c

@@ -1165,10 +1165,8 @@ out:
 	o2net_debug_del_nst(&nst); /* must be before dropping sc and node */
 	if (sc)
 		sc_put(sc);
-	if (vec)
-		kfree(vec);
-	if (msg)
-		kfree(msg);
+	kfree(vec);
+	kfree(msg);
 	o2net_complete_nsw(nn, &nsw, 0, 0, 0);
 	return ret;
 }

fs/ocfs2/dlm/dlmdomain.c

@@ -319,9 +319,7 @@ static void dlm_free_ctxt_mem(struct dlm_ctxt *dlm)
 	if (dlm->master_hash)
 		dlm_free_pagevec((void **)dlm->master_hash, DLM_HASH_PAGES);
 
-	if (dlm->name)
-		kfree(dlm->name);
-
+	kfree(dlm->name);
 	kfree(dlm);
 }
 

fs/ocfs2/dlmglue.c

@@ -2545,6 +2545,7 @@ int ocfs2_super_lock(struct ocfs2_super *osb,
 	 * everything is up to the caller :) */
 	status = ocfs2_should_refresh_lock_res(lockres);
 	if (status < 0) {
+		ocfs2_cluster_unlock(osb, lockres, level);
 		mlog_errno(status);
 		goto bail;
 	}
@@ -2553,8 +2554,10 @@ int ocfs2_super_lock(struct ocfs2_super *osb,
 
 		ocfs2_complete_lock_res_refresh(lockres, status);
 
-		if (status < 0)
+		if (status < 0) {
+			ocfs2_cluster_unlock(osb, lockres, level);
 			mlog_errno(status);
+		}
 		ocfs2_track_lock_refresh(lockres);
 	}
 bail:

fs/ocfs2/extent_map.c

@@ -282,8 +282,7 @@ search:
 	spin_unlock(&oi->ip_lock);
 
 out:
-	if (new_emi)
-		kfree(new_emi);
+	kfree(new_emi);
 }
 
 static int ocfs2_last_eb_is_empty(struct inode *inode,

fs/ocfs2/journal.c

@@ -1234,11 +1234,8 @@ static void ocfs2_queue_recovery_completion(struct ocfs2_journal *journal,
 		/* Though we wish to avoid it, we are in fact safe in
 		 * skipping local alloc cleanup as fsck.ocfs2 is more
 		 * than capable of reclaiming unused space. */
-		if (la_dinode)
-			kfree(la_dinode);
-
-		if (tl_dinode)
-			kfree(tl_dinode);
+		kfree(la_dinode);
+		kfree(tl_dinode);
 
 		if (qrec)
 			ocfs2_free_quota_recovery(qrec);
@@ -1408,8 +1405,7 @@ bail:
 
 	mutex_unlock(&osb->recovery_lock);
 
-	if (rm_quota)
-		kfree(rm_quota);
+	kfree(rm_quota);
 
 	/* no one is callint kthread_stop() for us so the kthread() api
 	 * requires that we call do_exit().  And it isn't exported, but

fs/ocfs2/localalloc.c

@@ -476,8 +476,7 @@ out:
 	if (local_alloc_inode)
 		iput(local_alloc_inode);
 
-	if (alloc_copy)
-		kfree(alloc_copy);
+	kfree(alloc_copy);
 }
 
 /*
@@ -534,7 +533,7 @@ int ocfs2_begin_local_alloc_recovery(struct ocfs2_super *osb,
 		mlog_errno(status);
 
 bail:
-	if ((status < 0) && (*alloc_copy)) {
+	if (status < 0) {
 		kfree(*alloc_copy);
 		*alloc_copy = NULL;
 	}
@@ -1290,8 +1289,7 @@ bail:
 	if (main_bm_inode)
 		iput(main_bm_inode);
 
-	if (alloc_copy)
-		kfree(alloc_copy);
+	kfree(alloc_copy);
 
 	if (ac)
 		ocfs2_free_alloc_context(ac);

fs/ocfs2/stack_o2cb.c

@@ -376,7 +376,7 @@ static int o2cb_cluster_connect(struct ocfs2_cluster_connection *conn)
 	dlm_register_eviction_cb(dlm, &priv->op_eviction_cb);
 
 out_free:
-	if (rc && conn->cc_private)
+	if (rc)
 		kfree(conn->cc_private);
 
 out:

fs/ocfs2/super.c

@@ -2525,8 +2525,7 @@ static int ocfs2_check_volume(struct ocfs2_super *osb)
 		mlog_errno(status);
 
 finally:
-	if (local_alloc)
-		kfree(local_alloc);
+	kfree(local_alloc);
 
 	if (status)
 		mlog_errno(status);
@@ -2553,8 +2552,7 @@ static void ocfs2_delete_osb(struct ocfs2_super *osb)
 	 * we free it here.
 	 */
 	kfree(osb->journal);
-	if (osb->local_alloc_copy)
-		kfree(osb->local_alloc_copy);
+	kfree(osb->local_alloc_copy);
 	kfree(osb->uuid_str);
 	ocfs2_put_dlm_debug(osb->osb_dlm_debug);
 	memset(osb, 0, sizeof(struct ocfs2_super));

fs/ocfs2/sysfile.c

@@ -91,8 +91,7 @@ static struct inode **get_local_system_inode(struct ocfs2_super *osb,
 		} else
 			osb->local_system_inodes = local_system_inodes;
 		spin_unlock(&osb->osb_lock);
-		if (unlikely(free))
-			kfree(free);
+		kfree(free);
 	}
 
 	index = (slot * NUM_LOCAL_SYSTEM_INODES) +

fs/ubifs/file.c

@@ -1522,6 +1522,7 @@ static int ubifs_vm_page_mkwrite(struct vm_area_struct *vma,
 			ubifs_release_dirty_inode_budget(c, ui);
 	}
 
+	wait_for_stable_page(page);
 	unlock_page(page);
 	return 0;