X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=volumes.h;h=699b0bae1018d12eb4dcf5922d12c58e6d420472;hb=c1c987503412a8e98e40da2548c6b78888535641;hp=2e960b502f16036105879e266e6ec08a5fcd1f2c;hpb=f6a290686ed62704a1ce571d58a9e1715abe1eb5;p=platform%2Fupstream%2Fbtrfs-progs.git

diff --git a/volumes.h b/volumes.h
index 2e960b5..699b0ba 100644
--- a/volumes.h
+++ b/volumes.h
@@ -16,10 +16,13 @@
  * Boston, MA 021110-1307, USA.
  */
 
-#ifndef __BTRFS_VOLUMES_
-#define __BTRFS_VOLUMES_
+#ifndef __BTRFS_VOLUMES_H__
+#define __BTRFS_VOLUMES_H__
 
-#define BTRFS_STRIPE_LEN	(64 * 1024)
+#include "kerncompat.h"
+#include "ctree.h"
+
+#define BTRFS_STRIPE_LEN	SZ_64K
 
 struct btrfs_device {
 	struct list_head dev_list;
@@ -39,6 +42,8 @@ struct btrfs_device {
 	u64 total_devs;
 	u64 super_bytes_used;
 
+	u64 generation;
+
 	/* the internal btrfs device id */
 	u64 devid;
 
@@ -130,6 +135,10 @@ struct map_lookup {
 #define BTRFS_BALANCE_ARGS_DEVID	(1ULL << 2)
 #define BTRFS_BALANCE_ARGS_DRANGE	(1ULL << 3)
 #define BTRFS_BALANCE_ARGS_VRANGE	(1ULL << 4)
+#define BTRFS_BALANCE_ARGS_LIMIT	(1ULL << 5)
+#define BTRFS_BALANCE_ARGS_LIMIT_RANGE	(1ULL << 6)
+#define BTRFS_BALANCE_ARGS_STRIPES_RANGE (1ULL << 7)
+#define BTRFS_BALANCE_ARGS_USAGE_RANGE	(1ULL << 10)
 
 /*
  * Profile changing flags.  When SOFT is set we won't relocate chunk if
@@ -142,6 +151,33 @@ struct map_lookup {
 #define BTRFS_RAID5_P_STRIPE ((u64)-2)
 #define BTRFS_RAID6_Q_STRIPE ((u64)-1)
 
+/*
+ * Check if the given range cross stripes.
+ * To ensure kernel scrub won't causing bug on with METADATA in mixed
+ * block group
+ *
+ * Return 1 if the range crosses STRIPE boundary
+ * Return 0 if the range doesn't cross STRIPE boundary or it
+ * doesn't belong to any block group (no boundary to cross)
+ */
+static inline int check_crossing_stripes(struct btrfs_fs_info *fs_info,
+					 u64 start, u64 len)
+{
+	struct btrfs_block_group_cache *bg_cache;
+	u64 bg_offset;
+
+	bg_cache = btrfs_lookup_block_group(fs_info, start);
+	/*
+	 * Does not belong to block group, no boundary to cross
+	 * although it's a bigger problem, but here we don't care.
+	 */
+	if (!bg_cache)
+		return 0;
+	bg_offset = start - bg_cache->key.objectid;
+
+	return (bg_offset / BTRFS_STRIPE_LEN !=
+		(bg_offset + len - 1) / BTRFS_STRIPE_LEN);
+}
 
 int __btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw,
 		      u64 logical, u64 *length, u64 *type,
@@ -151,8 +187,20 @@ int btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw,
 		    u64 logical, u64 *length,
 		    struct btrfs_multi_bio **multi_ret, int mirror_num,
 		    u64 **raid_map_ret);
-int btrfs_next_metadata(struct btrfs_mapping_tree *map_tree, u64 *logical,
-			u64 *size);
+int btrfs_next_bg(struct btrfs_mapping_tree *map_tree, u64 *logical,
+		     u64 *size, u64 type);
+static inline int btrfs_next_bg_metadata(struct btrfs_mapping_tree *map_tree,
+				      u64 *logical, u64 *size)
+{
+	return btrfs_next_bg(map_tree, logical, size,
+			BTRFS_BLOCK_GROUP_METADATA);
+}
+static inline int btrfs_next_bg_system(struct btrfs_mapping_tree *map_tree,
+				    u64 *logical, u64 *size)
+{
+	return btrfs_next_bg(map_tree, logical, size,
+			BTRFS_BLOCK_GROUP_SYSTEM);
+}
 int btrfs_rmap_block(struct btrfs_mapping_tree *map_tree,
 		     u64 chunk_start, u64 physical, u64 devid,
 		     u64 **logical, int *naddrs, int *stripe_len);
@@ -163,7 +211,7 @@ int btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
 		      u64 *num_bytes, u64 type);
 int btrfs_alloc_data_chunk(struct btrfs_trans_handle *trans,
 			   struct btrfs_root *extent_root, u64 *start,
-			   u64 num_bytes, u64 type);
+			   u64 num_bytes, u64 type, int convert);
 int btrfs_read_super_device(struct btrfs_root *root, struct extent_buffer *buf);
 int btrfs_add_device(struct btrfs_trans_handle *trans,
 		     struct btrfs_root *root,
@@ -171,6 +219,7 @@ int btrfs_add_device(struct btrfs_trans_handle *trans,
 int btrfs_open_devices(struct btrfs_fs_devices *fs_devices,
 		       int flags);
 int btrfs_close_devices(struct btrfs_fs_devices *fs_devices);
+void btrfs_close_all_devices(void);
 int btrfs_add_device(struct btrfs_trans_handle *trans,
 		     struct btrfs_root *root,
 		     struct btrfs_device *device);
@@ -178,11 +227,10 @@ int btrfs_update_device(struct btrfs_trans_handle *trans,
 			struct btrfs_device *device);
 int btrfs_scan_one_device(int fd, const char *path,
 			  struct btrfs_fs_devices **fs_devices_ret,
-			  u64 *total_devs, u64 super_offset);
+			  u64 *total_devs, u64 super_offset, unsigned sbflags);
 int btrfs_num_copies(struct btrfs_mapping_tree *map_tree, u64 logical, u64 len);
 struct list_head *btrfs_scanned_uuids(void);
-int btrfs_add_system_chunk(struct btrfs_trans_handle *trans,
-			   struct btrfs_root *root, struct btrfs_key *key,
+int btrfs_add_system_chunk(struct btrfs_root *root, struct btrfs_key *key,
 			   struct btrfs_chunk *chunk, int item_size);
 int btrfs_chunk_readonly(struct btrfs_root *root, u64 chunk_offset);
 struct btrfs_device *
@@ -194,4 +242,8 @@ int write_raid56_with_parity(struct btrfs_fs_info *info,
 			     struct extent_buffer *eb,
 			     struct btrfs_multi_bio *multi,
 			     u64 stripe_len, u64 *raid_map);
+int btrfs_check_chunk_valid(struct btrfs_root *root,
+			    struct extent_buffer *leaf,
+			    struct btrfs_chunk *chunk,
+			    int slot, u64 logical);
 #endif