Merge 4.4.171 into android-4.4

Changes in 4.4.171
	ALSA: hda/realtek - Disable headset Mic VREF for headset mode of ALC225
	btrfs: cleanup, stop casting for extent_map->lookup everywhere
	btrfs: Enhance chunk validation check
	Btrfs: add validadtion checks for chunk loading
	Btrfs: check inconsistence between chunk and block group
	Btrfs: fix em leak in find_first_block_group
	Btrfs: detect corruption when non-root leaf has zero item
	Btrfs: check btree node's nritems
	Btrfs: fix BUG_ON in btrfs_mark_buffer_dirty
	Btrfs: memset to avoid stale content in btree node block
	Btrfs: improve check_node to avoid reading corrupted nodes
	Btrfs: kill BUG_ON in run_delayed_tree_ref
	Btrfs: memset to avoid stale content in btree leaf
	Btrfs: fix emptiness check for dirtied extent buffers at check_leaf()
	btrfs: struct-funcs, constify readers
	btrfs: Refactor check_leaf function for later expansion
	btrfs: Check if item pointer overlaps with the item itself
	btrfs: Add sanity check for EXTENT_DATA when reading out leaf
	btrfs: Add checker for EXTENT_CSUM
	btrfs: Move leaf and node validation checker to tree-checker.c
	btrfs: tree-checker: Enhance btrfs_check_node output
	btrfs: tree-checker: Fix false panic for sanity test
	btrfs: tree-checker: Add checker for dir item
	btrfs: tree-checker: use %zu format string for size_t
	btrfs: tree-check: reduce stack consumption in check_dir_item
	btrfs: tree-checker: Verify block_group_item
	btrfs: tree-checker: Detect invalid and empty essential trees
	btrfs: validate type when reading a chunk
	btrfs: Check that each block group has corresponding chunk at mount time
	btrfs: Verify that every chunk has corresponding block group at mount time
	btrfs: tree-checker: Check level for leaves and nodes
	btrfs: tree-checker: Fix misleading group system information
	CIFS: Do not hide EINTR after sending network packets
	cifs: Fix potential OOB access of lock element array
	usb: cdc-acm: send ZLP for Telit 3G Intel based modems
	USB: storage: don't insert sane sense for SPC3+ when bad sense specified
	USB: storage: add quirk for SMI SM3350
	USB: Add USB_QUIRK_DELAY_CTRL_MSG quirk for Corsair K70 RGB
	slab: alien caches must not be initialized if the allocation of the alien cache failed
	PCI: altera: Fix altera_pcie_link_is_up()
	PCI: altera: Reorder read/write functions
	PCI: altera: Check link status before retrain link
	PCI: altera: Poll for link up status after retraining the link
	PCI: altera: Poll for link training status after retraining the link
	PCI: altera: Rework config accessors for use without a struct pci_bus
	PCI: altera: Move retrain from fixup to altera_pcie_host_init()
	ACPI: power: Skip duplicate power resource references in _PRx
	i2c: dev: prevent adapter retries and timeout being set as minus value
	crypto: cts - fix crash on short inputs
	ext4: fix a potential fiemap/page fault deadlock w/ inline_data
	sunrpc: use-after-free in svc_process_common()
	Linux 4.4.171

Change-Id: If59c94897d4f135b24d45772a7db116503695ba7
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

1 files changed, 38 insertions, 0 deletions

diff --git a/fs/btrfs/tree-checker.h b/fs/btrfs/tree-checker.h
new file mode 100644
index 000000000000..3d53e8d6fda0
--- /dev/null
+++ b/fs/btrfs/tree-checker.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) Qu Wenruo 2017.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License v2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program.
+ */
+
+#ifndef __BTRFS_TREE_CHECKER__
+#define __BTRFS_TREE_CHECKER__
+
+#include "ctree.h"
+#include "extent_io.h"
+
+/*
+ * Comprehensive leaf checker.
+ * Will check not only the item pointers, but also every possible member
+ * in item data.
+ */
+int btrfs_check_leaf_full(struct btrfs_root *root, struct extent_buffer *leaf);
+
+/*
+ * Less strict leaf checker.
+ * Will only check item pointers, not reading item data.
+ */
+int btrfs_check_leaf_relaxed(struct btrfs_root *root,
+			     struct extent_buffer *leaf);
+int btrfs_check_node(struct btrfs_root *root, struct extent_buffer *node);
+
+#endif