[PATCH 07/10] block-progs: block_group: add dirty_bgs list related memebers

damenly.su
2019-12-05T04:29:51Z

From: Su Yue <Damenly_Su@gmx.com>

The old style uses extent bit BLOCK_GROUP_DIRTY to mark dirty block
groups in extent cache. To replace it, add btrfs_trans_handle::dirty_bgs
and btrfs_block_group_cache::dirty_list.

Signed-off-by: Su Yue <Damenly_Su@gmx.com>
---
ctree.h | 3 +++
extent-tree.c | 4 ++++
transaction.c | 1 +
transaction.h | 3 ++-
4 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/ctree.h b/ctree.h
index f3f5f52f2559..61ce53c46302 100644
--- a/ctree.h
+++ b/ctree.h
@@ -1119,6 +1119,9 @@ struct btrfs_block_group_cache {

/* Block group cache stuff */
struct rb_node cache_node;
+
+ /* For dirty block groups */
+ struct list_head dirty_list;
};

struct btrfs_device;
diff --git a/extent-tree.c b/extent-tree.c
index ff3db5ca2e0c..981622e37ab7 100644
--- a/extent-tree.c
+++ b/extent-tree.c
@@ -2819,6 +2819,8 @@ static int read_one_block_group(struct btrfs_fs_info *fs_info,
cache->pinned = 0;
cache->flags = btrfs_block_group_flags(&bgi);
cache->used = btrfs_block_group_used(&bgi);
+ INIT_LIST_HEAD(&cache->dirty_list);
+
if (cache->flags & BTRFS_BLOCK_GROUP_DATA) {
bit = BLOCK_GROUP_DATA;
} else if (cache->flags & BTRFS_BLOCK_GROUP_SYSTEM) {
@@ -2900,6 +2902,7 @@ btrfs_add_block_group(struct btrfs_fs_info *fs_info, u64 bytes_used, u64 type,
cache->key.type = BTRFS_BLOCK_GROUP_ITEM_KEY;
cache->used = bytes_used;
cache->flags = type;
+ INIT_LIST_HEAD(&cache->dirty_list);

exclude_super_stripes(fs_info, cache);
ret = update_space_info(fs_info, cache->flags, size, bytes_used,
@@ -2997,6 +3000,7 @@ int btrfs_make_block_groups(struct btrfs_trans_handle *trans,
cache->key.type = BTRFS_BLOCK_GROUP_ITEM_KEY;
cache->used = 0;
cache->flags = group_type;
+ INIT_LIST_HEAD(&cache->dirty_list);

ret = update_space_info(fs_info, group_type, group_size,
0, &cache->space_info);
diff --git a/transaction.c b/transaction.c
index c9035c765a74..269e52c01d29 100644
--- a/transaction.c
+++ b/transaction.c
@@ -52,6 +52,7 @@ struct btrfs_trans_handle* btrfs_start_transaction(struct btrfs_root *root,
root->last_trans = h->transid;
root->commit_root = root->node;
extent_buffer_get(root->node);
+ INIT_LIST_HEAD(&h->dirty_bgs);

return h;
}
diff --git a/transaction.h b/transaction.h
index 750f456b3cc0..8fa65508fa8d 100644
--- a/transaction.h
+++ b/transaction.h
@@ -22,6 +22,7 @@
#include "kerncompat.h"
#include "ctree.h"
#include "delayed-ref.h"
+#include "kernel-lib/list.h"

struct btrfs_trans_handle {
struct btrfs_fs_info *fs_info;
@@ -35,7 +36,7 @@ struct btrfs_trans_handle {
unsigned long blocks_used;
struct btrfs_block_group_cache *block_group;
struct btrfs_delayed_ref_root delayed_refs;
-
+ struct list_head dirty_bgs;
};

struct btrfs_trans_handle* btrfs_start_transaction(struct btrfs_root *root,
--
2.21.0 (Apple Git-122)