btrfs-progs: Refactor btrfs_readahead_tree_block to use btrfs_fs_info

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>

5 files changed, 13 insertions, 11 deletions

diff --git a/cmds-check.c b/cmds-check.c
index e49b529d..339297d3 100644
--- a/cmds-check.c
+++ b/cmds-check.c
@@ -1967,6 +1967,7 @@ out:
 static void reada_walk_down(struct btrfs_root *root,
 			    struct extent_buffer *node, int slot)
 {
+	struct btrfs_fs_info *fs_info = root->fs_info;
 	u64 bytenr;
 	u64 ptr_gen;
 	u32 nritems;
@@ -1979,11 +1980,11 @@ static void reada_walk_down(struct btrfs_root *root,
 		return;
 
 	nritems = btrfs_header_nritems(node);
-	blocksize = root->fs_info->nodesize;
+	blocksize = fs_info->nodesize;
 	for (i = slot; i < nritems; i++) {
 		bytenr = btrfs_node_blockptr(node, i);
 		ptr_gen = btrfs_node_ptr_generation(node, i);
-		readahead_tree_block(root, bytenr, blocksize, ptr_gen);
+		readahead_tree_block(fs_info, bytenr, blocksize, ptr_gen);
 	}
 }
 
@@ -7610,6 +7611,7 @@ static int run_next_block(struct btrfs_root *root,
 			  struct device_extent_tree *dev_extent_cache,
 			  struct root_item_record *ri)
 {
+	struct btrfs_fs_info *fs_info = root->fs_info;
 	struct extent_buffer *buf;
 	struct extent_record *rec = NULL;
 	u64 bytenr;
@@ -7639,7 +7641,7 @@ static int run_next_block(struct btrfs_root *root,
 				continue;
 
 			/* fixme, get the parent transid */
-			readahead_tree_block(root, bits[i].start,
+			readahead_tree_block(fs_info, bits[i].start,
 					     bits[i].size, 0);
 		}
 	}
diff --git a/ctree.c b/ctree.c
index a6916b30..f3c13e1c 100644
--- a/ctree.c
+++ b/ctree.c
@@ -1021,7 +1021,7 @@ void reada_for_search(struct btrfs_root *root, struct btrfs_path *path,
 		if ((search >= lowest_read && search <= highest_read) ||
 		    (search < lowest_read && lowest_read - search <= 32768) ||
 		    (search > highest_read && search - highest_read <= 32768)) {
-			readahead_tree_block(root, search, blocksize,
+			readahead_tree_block(fs_info, search, blocksize,
 				     btrfs_node_ptr_generation(node, nr));
 			nread += blocksize;
 		}
diff --git a/disk-io.c b/disk-io.c
index 7addaf61..686c55e7 100644
--- a/disk-io.c
+++ b/disk-io.c
@@ -187,17 +187,17 @@ struct extent_buffer* btrfs_find_create_tree_block(
 	return alloc_extent_buffer(&fs_info->extent_cache, bytenr, blocksize);
 }
 
-void readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize,
-			  u64 parent_transid)
+void readahead_tree_block(struct btrfs_fs_info *fs_info, u64 bytenr,
+			  u32 blocksize, u64 parent_transid)
 {
 	struct extent_buffer *eb;
 	u64 length;
 	struct btrfs_multi_bio *multi = NULL;
 	struct btrfs_device *device;
 
-	eb = btrfs_find_tree_block(root->fs_info, bytenr, blocksize);
+	eb = btrfs_find_tree_block(fs_info, bytenr, blocksize);
 	if (!(eb && btrfs_buffer_uptodate(eb, parent_transid)) &&
-	    !btrfs_map_block(root->fs_info, READ, bytenr, &length, &multi, 0,
+	    !btrfs_map_block(fs_info, READ, bytenr, &length, &multi, 0,
 			     NULL)) {
 		device = multi->stripes[0].dev;
 		device->total_ios++;
diff --git a/disk-io.h b/disk-io.h
index 20520e59..b834fea4 100644
--- a/disk-io.h
+++ b/disk-io.h
@@ -121,8 +121,8 @@ struct extent_buffer* read_tree_block(
 
 int read_extent_data(struct btrfs_fs_info *fs_info, char *data, u64 logical,
 		     u64 *len, int mirror);
-void readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize,
-			  u64 parent_transid);
+void readahead_tree_block(struct btrfs_fs_info *fs_info, u64 bytenr,
+			  u32 blocksize, u64 parent_transid);
 struct extent_buffer* btrfs_find_create_tree_block(
 		struct btrfs_fs_info *fs_info, u64 bytenr, u32 blocksize);
 
diff --git a/image/main.c b/image/main.c
index e49430db..fac9b760 100644
--- a/image/main.c
+++ b/image/main.c
@@ -1029,7 +1029,7 @@ static int add_extent(u64 start, u64 size, struct metadump_struct *md,
 			return ret;
 		md->pending_start = start;
 	}
-	readahead_tree_block(md->root, start, size, 0);
+	readahead_tree_block(md->root->fs_info, start, size, 0);
 	md->pending_size += size;
 	md->data = data;
 	return 0;