Btrfs: struct key endian fixes

Signed-off-by: Chris Mason <chris.mason@oracle.com>

fs/btrfs/ctree.c

@@ -95,19 +95,23 @@ int leaf_free_space(struct leaf *leaf)
 /*
  * compare two keys in a memcmp fashion
  */
-int comp_keys(struct key *k1, struct key *k2)
+int comp_keys(struct btrfs_disk_key *disk, struct btrfs_key *k2)
 {
-	if (k1->objectid > k2->objectid)
+	struct btrfs_key k1;
+
+	btrfs_disk_key_to_cpu(&k1, disk);
+
+	if (k1.objectid > k2->objectid)
 		return 1;
-	if (k1->objectid < k2->objectid)
+	if (k1.objectid < k2->objectid)
 		return -1;
-	if (k1->flags > k2->flags)
+	if (k1.flags > k2->flags)
 		return 1;
-	if (k1->flags < k2->flags)
+	if (k1.flags < k2->flags)
 		return -1;
-	if (k1->offset > k2->offset)
+	if (k1.offset > k2->offset)
 		return 1;
-	if (k1->offset < k2->offset)
+	if (k1.offset < k2->offset)
 		return -1;
 	return 0;
 }
@@ -125,15 +129,18 @@ int check_node(struct ctree_path *path, int level)
 	parent_slot = path->slots[level + 1];
 	BUG_ON(nritems == 0);
 	if (parent) {
-		struct key *parent_key;
+		struct btrfs_disk_key *parent_key;
 		parent_key = &parent->keys[parent_slot];
-		BUG_ON(memcmp(parent_key, node->keys, sizeof(struct key)));
+		BUG_ON(memcmp(parent_key, node->keys,
+			      sizeof(struct btrfs_disk_key)));
 		BUG_ON(parent->blockptrs[parent_slot] !=
 		       btrfs_header_blocknr(&node->header));
 	}
 	BUG_ON(nritems > NODEPTRS_PER_BLOCK);
 	for (i = 0; nritems > 1 && i < nritems - 2; i++) {
-		BUG_ON(comp_keys(&node->keys[i], &node->keys[i+1]) >= 0);
+		struct btrfs_key cpukey;
+		btrfs_disk_key_to_cpu(&cpukey, &node->keys[i + 1]);
+		BUG_ON(comp_keys(&node->keys[i], &cpukey) >= 0);
 	}
 	return 0;
 }
@@ -155,16 +162,18 @@ int check_leaf(struct ctree_path *path, int level)
 		return 0;
 
 	if (parent) {
-		struct key *parent_key;
+		struct btrfs_disk_key *parent_key;
 		parent_key = &parent->keys[parent_slot];
 		BUG_ON(memcmp(parent_key, &leaf->items[0].key,
-		       sizeof(struct key)));
+		       sizeof(struct btrfs_disk_key)));
 		BUG_ON(parent->blockptrs[parent_slot] !=
 		       btrfs_header_blocknr(&leaf->header));
 	}
 	for (i = 0; nritems > 1 && i < nritems - 2; i++) {
+		struct btrfs_key cpukey;
+		btrfs_disk_key_to_cpu(&cpukey, &leaf->items[i + 1].key);
 		BUG_ON(comp_keys(&leaf->items[i].key,
-		                 &leaf->items[i+1].key) >= 0);
+		                 &cpukey) >= 0);
 		BUG_ON(leaf->items[i].offset != leaf->items[i + 1].offset +
 		    leaf->items[i + 1].size);
 		if (i == 0) {
@@ -191,18 +200,18 @@ int check_block(struct ctree_path *path, int level)
  *
  * slot may point to max if the key is bigger than all of the keys
  */
-int generic_bin_search(char *p, int item_size, struct key *key,
+int generic_bin_search(char *p, int item_size, struct btrfs_key *key,
 		       int max, int *slot)
 {
 	int low = 0;
 	int high = max;
 	int mid;
 	int ret;
-	struct key *tmp;
+	struct btrfs_disk_key *tmp;
 
 	while(low < high) {
 		mid = (low + high) / 2;
-		tmp = (struct key *)(p + mid * item_size);
+		tmp = (struct btrfs_disk_key *)(p + mid * item_size);
 		ret = comp_keys(tmp, key);
 
 		if (ret < 0)
@@ -222,7 +231,7 @@ int generic_bin_search(char *p, int item_size, struct key *key,
  * simple bin_search frontend that does the right thing for
  * leaves vs nodes
  */
-int bin_search(struct node *c, struct key *key, int *slot)
+int bin_search(struct node *c, struct btrfs_key *key, int *slot)
 {
 	if (btrfs_is_leaf(c)) {
 		struct leaf *l = (struct leaf *)c;
@@ -230,7 +239,8 @@ int bin_search(struct node *c, struct key *key, int *slot)
 					  key, btrfs_header_nritems(&c->header),
 					  slot);
 	} else {
-		return generic_bin_search((void *)c->keys, sizeof(struct key),
+		return generic_bin_search((void *)c->keys,
+					  sizeof(struct btrfs_disk_key),
 					  key, btrfs_header_nritems(&c->header),
 					  slot);
 	}
@@ -339,7 +349,7 @@ static int balance_level(struct ctree_root *root, struct ctree_path *path,
 				ret = wret;
 		} else {
 			memcpy(parent->keys + pslot + 1, right->keys,
-				sizeof(struct key));
+				sizeof(struct btrfs_disk_key));
 			BUG_ON(list_empty(&parent_buf->dirty));
 		}
 	}
@@ -374,7 +384,8 @@ static int balance_level(struct ctree_root *root, struct ctree_path *path,
 			ret = wret;
 	} else {
 		/* update the parent key to reflect our changes */
-		memcpy(parent->keys + pslot, mid->keys, sizeof(struct key));
+		memcpy(parent->keys + pslot, mid->keys,
+		       sizeof(struct btrfs_disk_key));
 		BUG_ON(list_empty(&parent_buf->dirty));
 	}
 
@@ -417,7 +428,7 @@ static int balance_level(struct ctree_root *root, struct ctree_path *path,
  * tree.  if ins_len < 0, nodes will be merged as we walk down the tree (if
  * possible)
  */
-int search_slot(struct ctree_root *root, struct key *key,
+int search_slot(struct ctree_root *root, struct btrfs_key *key,
 		struct ctree_path *p, int ins_len, int cow)
 {
 	struct tree_buffer *b;
@@ -499,7 +510,7 @@ again:
  * fixing up the blocks in ram so the tree is consistent.
  */
 static int fixup_low_keys(struct ctree_root *root,
-			   struct ctree_path *path, struct key *key,
+			   struct ctree_path *path, struct btrfs_disk_key *key,
 			   int level)
 {
 	int i;
@@ -546,12 +557,13 @@ static int push_node_left(struct ctree_root *root, struct tree_buffer *dst_buf,
 		push_items = src_nritems;
 
 	memcpy(dst->keys + dst_nritems, src->keys,
-		push_items * sizeof(struct key));
+		push_items * sizeof(struct btrfs_disk_key));
 	memcpy(dst->blockptrs + dst_nritems, src->blockptrs,
 		push_items * sizeof(u64));
 	if (push_items < src_nritems) {
 		memmove(src->keys, src->keys + push_items,
-			(src_nritems - push_items) * sizeof(struct key));
+			(src_nritems - push_items) *
+			sizeof(struct btrfs_disk_key));
 		memmove(src->blockptrs, src->blockptrs + push_items,
 			(src_nritems - push_items) * sizeof(u64));
 	}
@@ -598,11 +610,11 @@ static int balance_node_right(struct ctree_root *root,
 		push_items = max_push;
 
 	memmove(dst->keys + push_items, dst->keys,
-		dst_nritems * sizeof(struct key));
+		dst_nritems * sizeof(struct btrfs_disk_key));
 	memmove(dst->blockptrs + push_items, dst->blockptrs,
 		dst_nritems * sizeof(u64));
 	memcpy(dst->keys, src->keys + src_nritems - push_items,
-		push_items * sizeof(struct key));
+		push_items * sizeof(struct btrfs_disk_key));
 	memcpy(dst->blockptrs, src->blockptrs + src_nritems - push_items,
 		push_items * sizeof(u64));
 
@@ -627,7 +639,7 @@ static int insert_new_root(struct ctree_root *root,
 	struct tree_buffer *t;
 	struct node *lower;
 	struct node *c;
-	struct key *lower_key;
+	struct btrfs_disk_key *lower_key;
 
 	BUG_ON(path->nodes[level]);
 	BUG_ON(path->nodes[level-1] != root->node);
@@ -645,7 +657,7 @@ static int insert_new_root(struct ctree_root *root,
 		lower_key = &((struct leaf *)lower)->items[0].key;
 	else
 		lower_key = lower->keys;
-	memcpy(c->keys, lower_key, sizeof(struct key));
+	memcpy(c->keys, lower_key, sizeof(struct btrfs_disk_key));
 	c->blockptrs[0] = path->nodes[level-1]->blocknr;
 	/* the super has an extra ref to root->node */
 	tree_block_release(root, root->node);
@@ -666,7 +678,7 @@ static int insert_new_root(struct ctree_root *root,
  * returns zero on success and < 0 on any error
  */
 static int insert_ptr(struct ctree_root *root,
-		struct ctree_path *path, struct key *key,
+		struct ctree_path *path, struct btrfs_disk_key *key,
 		u64 blocknr, int slot, int level)
 {
 	struct node *lower;
@@ -681,11 +693,11 @@ static int insert_ptr(struct ctree_root *root,
 		BUG();
 	if (slot != nritems) {
 		memmove(lower->keys + slot + 1, lower->keys + slot,
-			(nritems - slot) * sizeof(struct key));
+			(nritems - slot) * sizeof(struct btrfs_disk_key));
 		memmove(lower->blockptrs + slot + 1, lower->blockptrs + slot,
 			(nritems - slot) * sizeof(u64));
 	}
-	memcpy(lower->keys + slot, key, sizeof(struct key));
+	memcpy(lower->keys + slot, key, sizeof(struct btrfs_disk_key));
 	lower->blockptrs[slot] = blocknr;
 	btrfs_set_header_nritems(&lower->header, nritems + 1);
 	if (lower->keys[1].objectid == 0)
@@ -732,7 +744,7 @@ static int split_node(struct ctree_root *root, struct ctree_path *path,
 	                       btrfs_header_parentid(&root->node->node.header));
 	mid = (c_nritems + 1) / 2;
 	memcpy(split->keys, c->keys + mid,
-		(c_nritems - mid) * sizeof(struct key));
+		(c_nritems - mid) * sizeof(struct btrfs_disk_key));
 	memcpy(split->blockptrs, c->blockptrs + mid,
 		(c_nritems - mid) * sizeof(u64));
 	btrfs_set_header_nritems(&split->header, c_nritems - mid);
@@ -869,7 +881,7 @@ static int push_leaf_right(struct ctree_root *root, struct ctree_path *path,
 	BUG_ON(list_empty(&left_buf->dirty));
 	BUG_ON(list_empty(&right_buf->dirty));
 	memcpy(upper->node.keys + slot + 1,
-		&right->items[0].key, sizeof(struct key));
+		&right->items[0].key, sizeof(struct btrfs_disk_key));
 	BUG_ON(list_empty(&upper->dirty));
 
 	/* then fixup the leaf pointer in the path */
@@ -1090,7 +1102,7 @@ static int split_leaf(struct ctree_root *root, struct ctree_path *path,
  * Given a key and some data, insert an item into the tree.
  * This does all the path init required, making room in the tree if needed.
  */
-int insert_item(struct ctree_root *root, struct key *key,
+int insert_item(struct ctree_root *root, struct btrfs_key *cpu_key,
 			  void *data, int data_size)
 {
 	int ret = 0;
@@ -1101,12 +1113,15 @@ int insert_item(struct ctree_root *root, struct key *key,
 	u32 nritems;
 	unsigned int data_end;
 	struct ctree_path path;
+	struct btrfs_disk_key disk_key;
+
+	btrfs_cpu_key_to_disk(&disk_key, cpu_key);
 
 	/* create a root if there isn't one */
 	if (!root->node)
 		BUG();
 	init_path(&path);
-	ret = search_slot(root, key, &path, data_size, 1);
+	ret = search_slot(root, cpu_key, &path, data_size, 1);
 	if (ret == 0) {
 		release_path(root, &path);
 		return -EEXIST;
@@ -1148,7 +1163,8 @@ int insert_item(struct ctree_root *root, struct key *key,
 		data_end = old_data;
 	}
 	/* copy the new data in */
-	memcpy(&leaf->items[slot].key, key, sizeof(struct key));
+	memcpy(&leaf->items[slot].key, &disk_key,
+		sizeof(struct btrfs_disk_key));
 	leaf->items[slot].offset = data_end - data_size;
 	leaf->items[slot].size = data_size;
 	memcpy(leaf->data + data_end - data_size, data, data_size);
@@ -1156,7 +1172,7 @@ int insert_item(struct ctree_root *root, struct key *key,
 
 	ret = 0;
 	if (slot == 0)
-		ret = fixup_low_keys(root, &path, key, 1);
+		ret = fixup_low_keys(root, &path, &disk_key, 1);
 
 	BUG_ON(list_empty(&leaf_buf->dirty));
 	if (leaf_free_space(leaf) < 0)
@@ -1187,7 +1203,7 @@ static int del_ptr(struct ctree_root *root, struct ctree_path *path, int level,
 	nritems = btrfs_header_nritems(&node->header);
 	if (slot != nritems -1) {
 		memmove(node->keys + slot, node->keys + slot + 1,
-			sizeof(struct key) * (nritems - slot - 1));
+			sizeof(struct btrfs_disk_key) * (nritems - slot - 1));
 		memmove(node->blockptrs + slot,
 			node->blockptrs + slot + 1,
 			sizeof(u64) * (nritems - slot - 1));

fs/btrfs/ctree.h

@@ -2,6 +2,7 @@
 #define __CTREE__
 
 #include "list.h"
+#include "kerncompat.h"
 
 #define CTREE_BLOCKSIZE 1024
 
@@ -14,8 +15,18 @@
  * may point to extents.
  *
  * offset is the starting byte offset for this key in the stream.
+ *
+ * btrfs_disk_key is in disk byte order.  struct btrfs_key is always
+ * in cpu native order.  Otherwise they are identical and their sizes
+ * should be the same (ie both packed)
  */
-struct key {
+struct btrfs_disk_key {
+	__le64 objectid;
+	__le32 flags;
+	__le64 offset;
+} __attribute__ ((__packed__));
+
+struct btrfs_key {
 	u64 objectid;
 	u32 flags;
 	u64 offset;
@@ -37,7 +48,7 @@ struct btrfs_header {
 
 #define MAX_LEVEL 8
 #define NODEPTRS_PER_BLOCK ((CTREE_BLOCKSIZE - sizeof(struct btrfs_header)) / \
-			    (sizeof(struct key) + sizeof(u64)))
+			    (sizeof(struct btrfs_disk_key) + sizeof(u64)))
 
 struct tree_buffer;
 
@@ -50,8 +61,8 @@ struct ctree_root {
 	struct tree_buffer *node;
 	struct tree_buffer *commit_root;
 	struct ctree_root *extent_root;
-	struct key current_insert;
-	struct key last_insert;
+	struct btrfs_key current_insert;
+	struct btrfs_key last_insert;
 	int fp;
 	struct radix_tree_root cache_radix;
 	struct radix_tree_root pinned_radix;
@@ -88,7 +99,7 @@ struct ctree_super_block {
  * the item in the leaf (relative to the start of the data area)
  */
 struct item {
-	struct key key;
+	struct btrfs_disk_key key;
 	u16 offset;
 	u16 size;
 } __attribute__ ((__packed__));
@@ -115,7 +126,7 @@ struct leaf {
  */
 struct node {
 	struct btrfs_header header;
-	struct key keys[NODEPTRS_PER_BLOCK];
+	struct btrfs_disk_key keys[NODEPTRS_PER_BLOCK];
 	u64 blockptrs[NODEPTRS_PER_BLOCK];
 } __attribute__ ((__packed__));
 
@@ -141,6 +152,55 @@ struct ctree_path {
 	int slots[MAX_LEVEL];
 };
 
+static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu,
+					 struct btrfs_disk_key *disk)
+{
+	cpu->offset = le64_to_cpu(disk->offset);
+	cpu->flags = le32_to_cpu(disk->flags);
+	cpu->objectid = le64_to_cpu(disk->objectid);
+}
+
+static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk,
+					 struct btrfs_key *cpu)
+{
+	disk->offset = cpu_to_le64(cpu->offset);
+	disk->flags = cpu_to_le32(cpu->flags);
+	disk->objectid = cpu_to_le64(cpu->objectid);
+}
+
+static inline u64 btrfs_key_objectid(struct btrfs_disk_key *disk)
+{
+	return le64_to_cpu(disk->objectid);
+}
+
+static inline void btrfs_set_key_objectid(struct btrfs_disk_key *disk,
+					  u64 val)
+{
+	disk->objectid = cpu_to_le64(val);
+}
+
+static inline u64 btrfs_key_offset(struct btrfs_disk_key *disk)
+{
+	return le64_to_cpu(disk->offset);
+}
+
+static inline void btrfs_set_key_offset(struct btrfs_disk_key *disk,
+					  u64 val)
+{
+	disk->offset = cpu_to_le64(val);
+}
+
+static inline u32 btrfs_key_flags(struct btrfs_disk_key *disk)
+{
+	return le32_to_cpu(disk->flags);
+}
+
+static inline void btrfs_set_key_flags(struct btrfs_disk_key *disk,
+					  u32 val)
+{
+	disk->flags = cpu_to_le32(val);
+}
+
 static inline u64 btrfs_header_blocknr(struct btrfs_header *h)
 {
 	return le64_to_cpu(h->blocknr);
@@ -203,11 +263,13 @@ static inline int btrfs_is_leaf(struct node *n)
 struct tree_buffer *alloc_free_block(struct ctree_root *root);
 int btrfs_inc_ref(struct ctree_root *root, struct tree_buffer *buf);
 int free_extent(struct ctree_root *root, u64 blocknr, u64 num_blocks);
-int search_slot(struct ctree_root *root, struct key *key, struct ctree_path *p, int ins_len, int cow);
+int search_slot(struct ctree_root *root, struct btrfs_key *key,
+		struct ctree_path *p, int ins_len, int cow);
 void release_path(struct ctree_root *root, struct ctree_path *p);
 void init_path(struct ctree_path *p);
 int del_item(struct ctree_root *root, struct ctree_path *path);
-int insert_item(struct ctree_root *root, struct key *key, void *data, int data_size);
+int insert_item(struct ctree_root *root, struct btrfs_key *key,
+		void *data, int data_size);
 int next_leaf(struct ctree_root *root, struct ctree_path *path);
 int leaf_free_space(struct leaf *leaf);
 int btrfs_drop_snapshot(struct ctree_root *root, struct tree_buffer *snap);

fs/btrfs/extent-tree.c

@@ -7,7 +7,8 @@
 #include "print-tree.h"
 
 static int find_free_extent(struct ctree_root *orig_root, u64 num_blocks,
-			    u64 search_start, u64 search_end, struct key *ins);
+			    u64 search_start, u64 search_end,
+			    struct btrfs_key *ins);
 static int finish_current_insert(struct ctree_root *extent_root);
 static int run_pending(struct ctree_root *extent_root);
 
@@ -24,10 +25,10 @@ static int inc_block_ref(struct ctree_root *root, u64 blocknr)
 {
 	struct ctree_path path;
 	int ret;
-	struct key key;
+	struct btrfs_key key;
 	struct leaf *l;
 	struct extent_item *item;
-	struct key ins;
+	struct btrfs_key ins;
 
 	find_free_extent(root->extent_root, 0, 0, (u64)-1, &ins);
 	init_path(&path);
@@ -54,7 +55,7 @@ static int lookup_block_ref(struct ctree_root *root, u64 blocknr, u32 *refs)
 {
 	struct ctree_path path;
 	int ret;
-	struct key key;
+	struct btrfs_key key;
 	struct leaf *l;
 	struct extent_item *item;
 	init_path(&path);
@@ -113,7 +114,7 @@ int btrfs_finish_extent_commit(struct ctree_root *root)
 
 static int finish_current_insert(struct ctree_root *extent_root)
 {
-	struct key ins;
+	struct btrfs_key ins;
 	struct extent_item extent_item;
 	int i;
 	int ret;
@@ -140,12 +141,12 @@ static int finish_current_insert(struct ctree_root *extent_root)
 int __free_extent(struct ctree_root *root, u64 blocknr, u64 num_blocks)
 {
 	struct ctree_path path;
-	struct key key;
+	struct btrfs_key key;
 	struct ctree_root *extent_root = root->extent_root;
 	int ret;
 	struct item *item;
 	struct extent_item *ei;
-	struct key ins;
+	struct btrfs_key ins;
 
 	key.objectid = blocknr;
 	key.flags = 0;
@@ -227,7 +228,7 @@ static int run_pending(struct ctree_root *extent_root)
  */
 int free_extent(struct ctree_root *root, u64 blocknr, u64 num_blocks)
 {
-	struct key key;
+	struct btrfs_key key;
 	struct ctree_root *extent_root = root->extent_root;
 	struct tree_buffer *t;
 	int pending_ret;
@@ -256,10 +257,11 @@ int free_extent(struct ctree_root *root, u64 blocknr, u64 num_blocks)
  * Any available blocks before search_start are skipped.
  */
 static int find_free_extent(struct ctree_root *orig_root, u64 num_blocks,
-			    u64 search_start, u64 search_end, struct key *ins)
+			    u64 search_start, u64 search_end,
+			    struct btrfs_key *ins)
 {
 	struct ctree_path path;
-	struct key *key;
+	struct btrfs_key key;
 	int ret;
 	u64 hole_size = 0;
 	int slot = 0;
@@ -306,12 +308,12 @@ check_failed:
 			ins->offset = (u64)-1;
 			goto check_pending;
 		}
-		key = &l->items[slot].key;
-		if (key->objectid >= search_start) {
+		btrfs_disk_key_to_cpu(&key, &l->items[slot].key);
+		if (key.objectid >= search_start) {
 			if (start_found) {
 				if (last_block < search_start)
 					last_block = search_start;
-				hole_size = key->objectid - last_block;
+				hole_size = key.objectid - last_block;
 				if (hole_size > total_needed) {
 					ins->objectid = last_block;
 					ins->offset = hole_size;
@@ -320,7 +322,7 @@ check_failed:
 			}
 		}
 		start_found = 1;
-		last_block = key->objectid + key->offset;
+		last_block = key.objectid + key.offset;
 		path.slots[0]++;
 	}
 	// FIXME -ENOSPC
@@ -357,7 +359,7 @@ error:
  * returns 0 if everything worked, non-zero otherwise.
  */
 int alloc_extent(struct ctree_root *root, u64 num_blocks, u64 search_start,
-			 u64 search_end, u64 owner, struct key *ins)
+			 u64 search_end, u64 owner, struct btrfs_key *ins)
 {
 	int ret;
 	int pending_ret;
@@ -400,7 +402,7 @@ int alloc_extent(struct ctree_root *root, u64 num_blocks, u64 search_start,
  */
 struct tree_buffer *alloc_free_block(struct ctree_root *root)
 {
-	struct key ins;
+	struct btrfs_key ins;
 	int ret;
 	struct tree_buffer *buf;
 

fs/btrfs/kerncompat.h

@@ -69,8 +69,6 @@ static inline void __clear_bit(int bit, unsigned long *map) {
         const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
 	        (type *)( (char *)__mptr - __builtin_offsetof(type,member) );})
 
-#endif
-
 #define ENOMEM 5
 #define EEXIST 6
 
@@ -94,3 +92,4 @@ typedef u64 __bitwise __be64;
 #define le32_to_cpu(x) ((__force u32)(__le32)(x))
 #define cpu_to_le16(x) ((__force __le16)(u16)(x))
 #define le16_to_cpu(x) ((__force u16)(__le16)(x))
+#endif

fs/btrfs/mkfs.c

@@ -45,9 +45,9 @@ int mkfs(int fd)
 	btrfs_set_header_nritems(&empty_leaf.header, 3);
 
 	/* item1, reserve blocks 0-16 */
-	item.key.objectid = 0;
-	item.key.offset = 17;
-	item.key.flags = 0;
+	item.key.objectid = cpu_to_le64(0);
+	item.key.offset = cpu_to_le64(17);
+	item.key.flags = cpu_to_le32(0);
 	item.offset = LEAF_DATA_SIZE - sizeof(struct extent_item);
 	item.size = sizeof(struct extent_item);
 	extent_item.refs = 1;
@@ -56,16 +56,16 @@ int mkfs(int fd)
 	memcpy(empty_leaf.data + item.offset, &extent_item, item.size);
 
 	/* item2, give block 17 to the root */
-	item.key.objectid = 17;
-	item.key.offset = 1;
+	item.key.objectid = cpu_to_le64(17);
+	item.key.offset = cpu_to_le64(1);
 	item.offset = LEAF_DATA_SIZE - sizeof(struct extent_item) * 2;
 	extent_item.owner = 1;
 	memcpy(empty_leaf.items + 1, &item, sizeof(item));
 	memcpy(empty_leaf.data + item.offset, &extent_item, item.size);
 
 	/* item3, give block 18 for the extent root */
-	item.key.objectid = 18;
-	item.key.offset = 1;
+	item.key.objectid = cpu_to_le64(18);
+	item.key.offset = cpu_to_le64(1);
 	item.offset = LEAF_DATA_SIZE - sizeof(struct extent_item) * 3;
 	extent_item.owner = 2;
 	memcpy(empty_leaf.items + 2, &item, sizeof(item));

fs/btrfs/quick-test.c

@@ -13,8 +13,8 @@ int next_key(int i, int max_key) {
 }
 
 int main(int ac, char **av) {
-	struct key ins;
-	struct key last = { (u64)-1, 0, 0};
+	struct btrfs_key ins;
+	struct btrfs_key last = { (u64)-1, 0, 0};
 	char *buf;
 	int i;
 	int num;
@@ -146,7 +146,7 @@ int main(int ac, char **av) {
 			slot = path.slots[0];
 			leaf = &path.nodes[0]->leaf;
 
-			memcpy(&last, &leaf->items[slot].key, sizeof(last));
+			btrfs_disk_key_to_cpu(&last, &leaf->items[slot].key);
 			if (tree_size % 10000 == 0)
 				printf("big del %d:%d\n", tree_size, i);
 			ret = del_item(root, &path);

fs/btrfs/random-test.c

@@ -10,7 +10,8 @@
 int keep_running = 1;
 struct ctree_super_block super;
 
-static int setup_key(struct radix_tree_root *root, struct key *key, int exists)
+static int setup_key(struct radix_tree_root *root, struct btrfs_key *key,
+		     int exists)
 {
 	int num = rand();
 	unsigned long res[2];
@@ -38,7 +39,7 @@ again:
 static int ins_one(struct ctree_root *root, struct radix_tree_root *radix)
 {
 	struct ctree_path path;
-	struct key key;
+	struct btrfs_key key;
 	int ret;
 	char buf[128];
 	unsigned long oid;
@@ -63,7 +64,7 @@ error:
 static int insert_dup(struct ctree_root *root, struct radix_tree_root *radix)
 {
 	struct ctree_path path;
-	struct key key;
+	struct btrfs_key key;
 	int ret;
 	char buf[128];
 	init_path(&path);
@@ -82,7 +83,7 @@ static int insert_dup(struct ctree_root *root, struct radix_tree_root *radix)
 static int del_one(struct ctree_root *root, struct radix_tree_root *radix)
 {
 	struct ctree_path path;
-	struct key key;
+	struct btrfs_key key;
 	int ret;
 	unsigned long *ptr;
 	init_path(&path);
@@ -108,7 +109,7 @@ error:
 static int lookup_item(struct ctree_root *root, struct radix_tree_root *radix)
 {
 	struct ctree_path path;
-	struct key key;
+	struct btrfs_key key;
 	int ret;
 	init_path(&path);
 	ret = setup_key(radix, &key, 1);
@@ -127,7 +128,7 @@ error:
 static int lookup_enoent(struct ctree_root *root, struct radix_tree_root *radix)
 {
 	struct ctree_path path;
-	struct key key;
+	struct btrfs_key key;
 	int ret;
 	init_path(&path);
 	ret = setup_key(radix, &key, 0);
@@ -147,7 +148,7 @@ static int empty_tree(struct ctree_root *root, struct radix_tree_root *radix,
 		      int nr)
 {
 	struct ctree_path path;
-	struct key key;
+	struct btrfs_key key;
 	unsigned long found = 0;
 	int ret;
 	int slot;
@@ -248,7 +249,7 @@ int (*ops[])(struct ctree_root *root, struct radix_tree_root *radix) =
 static int fill_radix(struct ctree_root *root, struct radix_tree_root *radix)
 {
 	struct ctree_path path;
-	struct key key;
+	struct btrfs_key key;
 	unsigned long found;
 	int ret;
 	int slot;