btrfs: stop accessing ->extent_root directly
When we start having multiple extent roots we'll need to use a helper to
get to the correct extent_root. Rename fs_info->extent_root to
_extent_root and convert all of the users of the extent root to using
the btrfs_extent_root() helper. This will allow us to easily clean up
the remaining direct accesses in the future.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index b51f8f9..c9ee579 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -1170,7 +1170,7 @@ static int find_parent_nodes(struct btrfs_trans_handle *trans,
struct ulist *roots, const u64 *extent_item_pos,
struct share_check *sc, bool ignore_offset)
{
- struct btrfs_root *root = fs_info->extent_root;
+ struct btrfs_root *root = btrfs_extent_root(fs_info, bytenr);
struct btrfs_key key;
struct btrfs_path *path;
struct btrfs_delayed_ref_root *delayed_refs = NULL;
@@ -1747,6 +1747,7 @@ int extent_from_logical(struct btrfs_fs_info *fs_info, u64 logical,
struct btrfs_path *path, struct btrfs_key *found_key,
u64 *flags_ret)
{
+ struct btrfs_root *extent_root = btrfs_extent_root(fs_info, logical);
int ret;
u64 flags;
u64 size = 0;
@@ -1762,11 +1763,11 @@ int extent_from_logical(struct btrfs_fs_info *fs_info, u64 logical,
key.objectid = logical;
key.offset = (u64)-1;
- ret = btrfs_search_slot(NULL, fs_info->extent_root, &key, path, 0, 0);
+ ret = btrfs_search_slot(NULL, extent_root, &key, path, 0, 0);
if (ret < 0)
return ret;
- ret = btrfs_previous_extent_item(fs_info->extent_root, path, 0);
+ ret = btrfs_previous_extent_item(extent_root, path, 0);
if (ret) {
if (ret > 0)
ret = -ENOENT;
@@ -2335,6 +2336,7 @@ struct btrfs_backref_iter *btrfs_backref_iter_alloc(
int btrfs_backref_iter_start(struct btrfs_backref_iter *iter, u64 bytenr)
{
struct btrfs_fs_info *fs_info = iter->fs_info;
+ struct btrfs_root *extent_root = btrfs_extent_root(fs_info, bytenr);
struct btrfs_path *path = iter->path;
struct btrfs_extent_item *ei;
struct btrfs_key key;
@@ -2345,7 +2347,7 @@ int btrfs_backref_iter_start(struct btrfs_backref_iter *iter, u64 bytenr)
key.offset = (u64)-1;
iter->bytenr = bytenr;
- ret = btrfs_search_slot(NULL, fs_info->extent_root, &key, path, 0, 0);
+ ret = btrfs_search_slot(NULL, extent_root, &key, path, 0, 0);
if (ret < 0)
return ret;
if (ret == 0) {
@@ -2388,7 +2390,7 @@ int btrfs_backref_iter_start(struct btrfs_backref_iter *iter, u64 bytenr)
/* If there is no inline backref, go search for keyed backref */
if (iter->cur_ptr >= iter->end_ptr) {
- ret = btrfs_next_item(fs_info->extent_root, path);
+ ret = btrfs_next_item(extent_root, path);
/* No inline nor keyed ref */
if (ret > 0) {
@@ -2432,6 +2434,7 @@ int btrfs_backref_iter_start(struct btrfs_backref_iter *iter, u64 bytenr)
int btrfs_backref_iter_next(struct btrfs_backref_iter *iter)
{
struct extent_buffer *eb = btrfs_backref_get_eb(iter);
+ struct btrfs_root *extent_root;
struct btrfs_path *path = iter->path;
struct btrfs_extent_inline_ref *iref;
int ret;
@@ -2462,7 +2465,8 @@ int btrfs_backref_iter_next(struct btrfs_backref_iter *iter)
}
/* We're at keyed items, there is no inline item, go to the next one */
- ret = btrfs_next_item(iter->fs_info->extent_root, iter->path);
+ extent_root = btrfs_extent_root(iter->fs_info, iter->bytenr);
+ ret = btrfs_next_item(extent_root, iter->path);
if (ret)
return ret;
diff --git a/fs/btrfs/block-group.c b/fs/btrfs/block-group.c
index d3d4200..7d63721 100644
--- a/fs/btrfs/block-group.c
+++ b/fs/btrfs/block-group.c
@@ -514,7 +514,7 @@ static int load_extent_tree_free(struct btrfs_caching_control *caching_ctl)
{
struct btrfs_block_group *block_group = caching_ctl->block_group;
struct btrfs_fs_info *fs_info = block_group->fs_info;
- struct btrfs_root *extent_root = fs_info->extent_root;
+ struct btrfs_root *extent_root;
struct btrfs_path *path;
struct extent_buffer *leaf;
struct btrfs_key key;
@@ -529,6 +529,7 @@ static int load_extent_tree_free(struct btrfs_caching_control *caching_ctl)
return -ENOMEM;
last = max_t(u64, block_group->start, BTRFS_SUPER_INFO_OFFSET);
+ extent_root = btrfs_extent_root(fs_info, last);
#ifdef CONFIG_BTRFS_DEBUG
/*
diff --git a/fs/btrfs/block-rsv.c b/fs/btrfs/block-rsv.c
index 454f3c6..b216c4c 100644
--- a/fs/btrfs/block-rsv.c
+++ b/fs/btrfs/block-rsv.c
@@ -6,6 +6,7 @@
#include "space-info.h"
#include "transaction.h"
#include "block-group.h"
+#include "disk-io.h"
/*
* HOW DO BLOCK RESERVES WORK
@@ -351,6 +352,7 @@ void btrfs_update_global_block_rsv(struct btrfs_fs_info *fs_info)
{
struct btrfs_block_rsv *block_rsv = &fs_info->global_block_rsv;
struct btrfs_space_info *sinfo = block_rsv->space_info;
+ struct btrfs_root *extent_root = btrfs_extent_root(fs_info, 0);
u64 num_bytes;
unsigned min_items;
@@ -359,7 +361,7 @@ void btrfs_update_global_block_rsv(struct btrfs_fs_info *fs_info)
* checksum tree and the root tree. If the fs is empty we want to set
* it to a minimal amount for safety.
*/
- num_bytes = btrfs_root_used(&fs_info->extent_root->root_item) +
+ num_bytes = btrfs_root_used(&extent_root->root_item) +
btrfs_root_used(&fs_info->csum_root->root_item) +
btrfs_root_used(&fs_info->tree_root->root_item);
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 6474e30..aa4f0ad 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -621,7 +621,7 @@ enum btrfs_exclusive_operation {
struct btrfs_fs_info {
u8 chunk_tree_uuid[BTRFS_UUID_SIZE];
unsigned long flags;
- struct btrfs_root *extent_root;
+ struct btrfs_root *_extent_root;
struct btrfs_root *tree_root;
struct btrfs_root *chunk_root;
struct btrfs_root *dev_root;
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index ff5ec82..1b69f8e 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1557,7 +1557,7 @@ static struct btrfs_root *btrfs_get_global_root(struct btrfs_fs_info *fs_info,
if (objectid == BTRFS_ROOT_TREE_OBJECTID)
return btrfs_grab_root(fs_info->tree_root);
if (objectid == BTRFS_EXTENT_TREE_OBJECTID)
- return btrfs_grab_root(fs_info->extent_root);
+ return btrfs_grab_root(fs_info->_extent_root);
if (objectid == BTRFS_CHUNK_TREE_OBJECTID)
return btrfs_grab_root(fs_info->chunk_root);
if (objectid == BTRFS_DEV_TREE_OBJECTID)
@@ -1630,7 +1630,7 @@ void btrfs_free_fs_info(struct btrfs_fs_info *fs_info)
btrfs_free_ref_cache(fs_info);
kfree(fs_info->balance_ctl);
kfree(fs_info->delayed_root);
- btrfs_put_root(fs_info->extent_root);
+ btrfs_put_root(fs_info->_extent_root);
btrfs_put_root(fs_info->tree_root);
btrfs_put_root(fs_info->chunk_root);
btrfs_put_root(fs_info->dev_root);
@@ -2008,6 +2008,7 @@ static void backup_super_roots(struct btrfs_fs_info *info)
{
const int next_backup = info->backup_root_index;
struct btrfs_root_backup *root_backup;
+ struct btrfs_root *extent_root = btrfs_extent_root(info, 0);
root_backup = info->super_for_commit->super_roots + next_backup;
@@ -2032,11 +2033,11 @@ static void backup_super_roots(struct btrfs_fs_info *info)
btrfs_set_backup_chunk_root_level(root_backup,
btrfs_header_level(info->chunk_root->node));
- btrfs_set_backup_extent_root(root_backup, info->extent_root->node->start);
+ btrfs_set_backup_extent_root(root_backup, extent_root->node->start);
btrfs_set_backup_extent_root_gen(root_backup,
- btrfs_header_generation(info->extent_root->node));
+ btrfs_header_generation(extent_root->node));
btrfs_set_backup_extent_root_level(root_backup,
- btrfs_header_level(info->extent_root->node));
+ btrfs_header_level(extent_root->node));
/*
* we might commit during log recovery, which happens before we set
@@ -2166,7 +2167,7 @@ static void free_root_pointers(struct btrfs_fs_info *info, bool free_chunk_root)
free_root_extent_buffers(info->tree_root);
free_root_extent_buffers(info->dev_root);
- free_root_extent_buffers(info->extent_root);
+ free_root_extent_buffers(info->_extent_root);
free_root_extent_buffers(info->csum_root);
free_root_extent_buffers(info->quota_root);
free_root_extent_buffers(info->uuid_root);
@@ -2456,7 +2457,7 @@ static int btrfs_read_roots(struct btrfs_fs_info *fs_info)
}
} else {
set_bit(BTRFS_ROOT_TRACK_DIRTY, &root->state);
- fs_info->extent_root = root;
+ fs_info->_extent_root = root;
}
location.objectid = BTRFS_DEV_TREE_OBJECTID;
diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h
index baca295..e2824c6 100644
--- a/fs/btrfs/disk-io.h
+++ b/fs/btrfs/disk-io.h
@@ -103,9 +103,15 @@ static inline struct btrfs_root *btrfs_grab_root(struct btrfs_root *root)
return NULL;
}
+static inline struct btrfs_root *btrfs_extent_root(struct btrfs_fs_info *fs_info,
+ u64 bytenr)
+{
+ return fs_info->_extent_root;
+}
+
static inline struct btrfs_root *btrfs_block_group_root(struct btrfs_fs_info *fs_info)
{
- return fs_info->extent_root;
+ return btrfs_extent_root(fs_info, 0);
}
void btrfs_put_root(struct btrfs_root *root);
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index ae25ca5..8e5dcb9 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -87,6 +87,7 @@ void btrfs_free_excluded_extents(struct btrfs_block_group *cache)
/* simple helper to search for an existing data extent at a given offset */
int btrfs_lookup_data_extent(struct btrfs_fs_info *fs_info, u64 start, u64 len)
{
+ struct btrfs_root *root = btrfs_extent_root(fs_info, start);
int ret;
struct btrfs_key key;
struct btrfs_path *path;
@@ -98,7 +99,7 @@ int btrfs_lookup_data_extent(struct btrfs_fs_info *fs_info, u64 start, u64 len)
key.objectid = start;
key.offset = len;
key.type = BTRFS_EXTENT_ITEM_KEY;
- ret = btrfs_search_slot(NULL, fs_info->extent_root, &key, path, 0, 0);
+ ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
btrfs_free_path(path);
return ret;
}
@@ -116,6 +117,7 @@ int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info, u64 bytenr,
u64 offset, int metadata, u64 *refs, u64 *flags)
{
+ struct btrfs_root *extent_root;
struct btrfs_delayed_ref_head *head;
struct btrfs_delayed_ref_root *delayed_refs;
struct btrfs_path *path;
@@ -153,7 +155,8 @@ int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans,
else
key.type = BTRFS_EXTENT_ITEM_KEY;
- ret = btrfs_search_slot(NULL, fs_info->extent_root, &key, path, 0, 0);
+ extent_root = btrfs_extent_root(fs_info, bytenr);
+ ret = btrfs_search_slot(NULL, extent_root, &key, path, 0, 0);
if (ret < 0)
goto out_free;
@@ -443,7 +446,7 @@ static noinline int lookup_extent_data_ref(struct btrfs_trans_handle *trans,
u64 root_objectid,
u64 owner, u64 offset)
{
- struct btrfs_root *root = trans->fs_info->extent_root;
+ struct btrfs_root *root = btrfs_extent_root(trans->fs_info, bytenr);
struct btrfs_key key;
struct btrfs_extent_data_ref *ref;
struct extent_buffer *leaf;
@@ -519,7 +522,7 @@ static noinline int insert_extent_data_ref(struct btrfs_trans_handle *trans,
u64 root_objectid, u64 owner,
u64 offset, int refs_to_add)
{
- struct btrfs_root *root = trans->fs_info->extent_root;
+ struct btrfs_root *root = btrfs_extent_root(trans->fs_info, bytenr);
struct btrfs_key key;
struct extent_buffer *leaf;
u32 size;
@@ -686,7 +689,7 @@ static noinline int lookup_tree_block_ref(struct btrfs_trans_handle *trans,
u64 bytenr, u64 parent,
u64 root_objectid)
{
- struct btrfs_root *root = trans->fs_info->extent_root;
+ struct btrfs_root *root = btrfs_extent_root(trans->fs_info, bytenr);
struct btrfs_key key;
int ret;
@@ -710,6 +713,7 @@ static noinline int insert_tree_block_ref(struct btrfs_trans_handle *trans,
u64 bytenr, u64 parent,
u64 root_objectid)
{
+ struct btrfs_root *root = btrfs_extent_root(trans->fs_info, bytenr);
struct btrfs_key key;
int ret;
@@ -722,8 +726,7 @@ static noinline int insert_tree_block_ref(struct btrfs_trans_handle *trans,
key.offset = root_objectid;
}
- ret = btrfs_insert_empty_item(trans, trans->fs_info->extent_root,
- path, &key, 0);
+ ret = btrfs_insert_empty_item(trans, root, path, &key, 0);
btrfs_release_path(path);
return ret;
}
@@ -788,7 +791,7 @@ int lookup_inline_extent_backref(struct btrfs_trans_handle *trans,
u64 owner, u64 offset, int insert)
{
struct btrfs_fs_info *fs_info = trans->fs_info;
- struct btrfs_root *root = fs_info->extent_root;
+ struct btrfs_root *root = btrfs_extent_root(fs_info, bytenr);
struct btrfs_key key;
struct extent_buffer *leaf;
struct btrfs_extent_item *ei;
@@ -1574,6 +1577,7 @@ static int run_delayed_extent_op(struct btrfs_trans_handle *trans,
struct btrfs_delayed_extent_op *extent_op)
{
struct btrfs_fs_info *fs_info = trans->fs_info;
+ struct btrfs_root *root;
struct btrfs_key key;
struct btrfs_path *path;
struct btrfs_extent_item *ei;
@@ -1603,8 +1607,9 @@ static int run_delayed_extent_op(struct btrfs_trans_handle *trans,
key.offset = head->num_bytes;
}
+ root = btrfs_extent_root(fs_info, key.objectid);
again:
- ret = btrfs_search_slot(trans, fs_info->extent_root, &key, path, 0, 1);
+ ret = btrfs_search_slot(trans, root, &key, path, 0, 1);
if (ret < 0) {
err = ret;
goto out;
@@ -2287,7 +2292,7 @@ static noinline int check_committed_ref(struct btrfs_root *root,
bool strict)
{
struct btrfs_fs_info *fs_info = root->fs_info;
- struct btrfs_root *extent_root = fs_info->extent_root;
+ struct btrfs_root *extent_root = btrfs_extent_root(fs_info, bytenr);
struct extent_buffer *leaf;
struct btrfs_extent_data_ref *ref;
struct btrfs_extent_inline_ref *iref;
@@ -2922,7 +2927,7 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *info = trans->fs_info;
struct btrfs_key key;
struct btrfs_path *path;
- struct btrfs_root *extent_root = info->extent_root;
+ struct btrfs_root *extent_root;
struct extent_buffer *leaf;
struct btrfs_extent_item *ei;
struct btrfs_extent_inline_ref *iref;
@@ -2938,6 +2943,8 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
int last_ref = 0;
bool skinny_metadata = btrfs_fs_incompat(info, SKINNY_METADATA);
+ extent_root = btrfs_extent_root(info, bytenr);
+
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
@@ -4572,6 +4579,7 @@ static int alloc_reserved_file_extent(struct btrfs_trans_handle *trans,
struct btrfs_key *ins, int ref_mod)
{
struct btrfs_fs_info *fs_info = trans->fs_info;
+ struct btrfs_root *extent_root;
int ret;
struct btrfs_extent_item *extent_item;
struct btrfs_extent_inline_ref *iref;
@@ -4591,8 +4599,8 @@ static int alloc_reserved_file_extent(struct btrfs_trans_handle *trans,
if (!path)
return -ENOMEM;
- ret = btrfs_insert_empty_item(trans, fs_info->extent_root, path,
- ins, size);
+ extent_root = btrfs_extent_root(fs_info, ins->objectid);
+ ret = btrfs_insert_empty_item(trans, extent_root, path, ins, size);
if (ret) {
btrfs_free_path(path);
return ret;
@@ -4644,6 +4652,7 @@ static int alloc_reserved_tree_block(struct btrfs_trans_handle *trans,
struct btrfs_delayed_extent_op *extent_op)
{
struct btrfs_fs_info *fs_info = trans->fs_info;
+ struct btrfs_root *extent_root;
int ret;
struct btrfs_extent_item *extent_item;
struct btrfs_key extent_key;
@@ -4675,8 +4684,9 @@ static int alloc_reserved_tree_block(struct btrfs_trans_handle *trans,
if (!path)
return -ENOMEM;
- ret = btrfs_insert_empty_item(trans, fs_info->extent_root, path,
- &extent_key, size);
+ extent_root = btrfs_extent_root(fs_info, extent_key.objectid);
+ ret = btrfs_insert_empty_item(trans, extent_root, path, &extent_key,
+ size);
if (ret) {
btrfs_free_path(path);
return ret;
diff --git a/fs/btrfs/free-space-tree.c b/fs/btrfs/free-space-tree.c
index 3abec44..4e9bf94 100644
--- a/fs/btrfs/free-space-tree.c
+++ b/fs/btrfs/free-space-tree.c
@@ -1046,7 +1046,7 @@ int add_to_free_space_tree(struct btrfs_trans_handle *trans,
static int populate_free_space_tree(struct btrfs_trans_handle *trans,
struct btrfs_block_group *block_group)
{
- struct btrfs_root *extent_root = trans->fs_info->extent_root;
+ struct btrfs_root *extent_root;
struct btrfs_path *path, *path2;
struct btrfs_key key;
u64 start, end;
@@ -1080,6 +1080,7 @@ static int populate_free_space_tree(struct btrfs_trans_handle *trans,
key.type = BTRFS_EXTENT_ITEM_KEY;
key.offset = 0;
+ extent_root = btrfs_extent_root(trans->fs_info, key.objectid);
ret = btrfs_search_slot_for_read(extent_root, &key, path, 1, 0);
if (ret < 0)
goto out_locked;
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 071f733..8928275 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -3161,6 +3161,7 @@ static int qgroup_rescan_leaf(struct btrfs_trans_handle *trans,
struct btrfs_path *path)
{
struct btrfs_fs_info *fs_info = trans->fs_info;
+ struct btrfs_root *extent_root;
struct btrfs_key found;
struct extent_buffer *scratch_leaf = NULL;
struct ulist *roots = NULL;
@@ -3170,7 +3171,9 @@ static int qgroup_rescan_leaf(struct btrfs_trans_handle *trans,
int ret;
mutex_lock(&fs_info->qgroup_rescan_lock);
- ret = btrfs_search_slot_for_read(fs_info->extent_root,
+ extent_root = btrfs_extent_root(fs_info,
+ fs_info->qgroup_rescan_progress.objectid);
+ ret = btrfs_search_slot_for_read(extent_root,
&fs_info->qgroup_rescan_progress,
path, 1, 0);
diff --git a/fs/btrfs/ref-verify.c b/fs/btrfs/ref-verify.c
index f34130d..a248f46 100644
--- a/fs/btrfs/ref-verify.c
+++ b/fs/btrfs/ref-verify.c
@@ -972,6 +972,7 @@ void btrfs_free_ref_tree_range(struct btrfs_fs_info *fs_info, u64 start,
/* Walk down all roots and build the ref tree, meant to be called at mount */
int btrfs_build_ref_tree(struct btrfs_fs_info *fs_info)
{
+ struct btrfs_root *extent_root;
struct btrfs_path *path;
struct extent_buffer *eb;
int tree_block_level = 0;
@@ -985,7 +986,8 @@ int btrfs_build_ref_tree(struct btrfs_fs_info *fs_info)
if (!path)
return -ENOMEM;
- eb = btrfs_read_lock_root_node(fs_info->extent_root);
+ extent_root = btrfs_extent_root(fs_info, 0);
+ eb = btrfs_read_lock_root_node(extent_root);
level = btrfs_header_level(eb);
path->nodes[level] = eb;
path->slots[level] = 0;
@@ -998,7 +1000,7 @@ int btrfs_build_ref_tree(struct btrfs_fs_info *fs_info)
* would have had to added a ref key item which may appear on a
* different leaf from the original extent item.
*/
- ret = walk_down_tree(fs_info->extent_root, path, level,
+ ret = walk_down_tree(extent_root, path, level,
&bytenr, &num_bytes, &tree_block_level);
if (ret)
break;
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index a455a1e..681fb25 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -3964,7 +3964,7 @@ static const char *stage_to_string(int stage)
int btrfs_relocate_block_group(struct btrfs_fs_info *fs_info, u64 group_start)
{
struct btrfs_block_group *bg;
- struct btrfs_root *extent_root = fs_info->extent_root;
+ struct btrfs_root *extent_root = btrfs_extent_root(fs_info, group_start);
struct reloc_control *rc;
struct inode *inode;
struct btrfs_path *path;
@@ -4215,7 +4215,7 @@ int btrfs_recover_relocation(struct btrfs_root *root)
goto out_end;
}
- rc->extent_root = fs_info->extent_root;
+ rc->extent_root = btrfs_extent_root(fs_info, 0);
set_reloc_control(rc);
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index d175c5a..a001735 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -2897,7 +2897,7 @@ static noinline_for_stack int scrub_raid56_parity(struct scrub_ctx *sctx,
u64 logic_end)
{
struct btrfs_fs_info *fs_info = sctx->fs_info;
- struct btrfs_root *root = fs_info->extent_root;
+ struct btrfs_root *root = btrfs_extent_root(fs_info, logic_start);
struct btrfs_root *csum_root = fs_info->csum_root;
struct btrfs_extent_item *extent;
struct btrfs_io_context *bioc = NULL;
@@ -3168,7 +3168,7 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx,
{
struct btrfs_path *path, *ppath;
struct btrfs_fs_info *fs_info = sctx->fs_info;
- struct btrfs_root *root = fs_info->extent_root;
+ struct btrfs_root *root;
struct btrfs_root *csum_root = fs_info->csum_root;
struct btrfs_extent_item *extent;
struct blk_plug plug;
@@ -3262,6 +3262,8 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx,
atomic_read(&sctx->bios_in_flight) == 0);
scrub_blocked_if_needed(fs_info);
+ root = btrfs_extent_root(fs_info, logical);
+
/* FIXME it might be better to start readahead at commit root */
key.objectid = logical;
key.type = BTRFS_EXTENT_ITEM_KEY;
diff --git a/fs/btrfs/tests/free-space-tests.c b/fs/btrfs/tests/free-space-tests.c
index 87ae4ae..13428de 100644
--- a/fs/btrfs/tests/free-space-tests.c
+++ b/fs/btrfs/tests/free-space-tests.c
@@ -1036,7 +1036,7 @@ int btrfs_test_free_space_cache(u32 sectorsize, u32 nodesize)
goto out;
}
- root->fs_info->extent_root = root;
+ root->fs_info->_extent_root = root;
ret = test_extents(cache);
if (ret)
diff --git a/fs/btrfs/tests/qgroup-tests.c b/fs/btrfs/tests/qgroup-tests.c
index 19ba7d5..88e1978 100644
--- a/fs/btrfs/tests/qgroup-tests.c
+++ b/fs/btrfs/tests/qgroup-tests.c
@@ -455,7 +455,7 @@ int btrfs_test_qgroups(u32 sectorsize, u32 nodesize)
}
/* We are using this root as our extent root */
- root->fs_info->extent_root = root;
+ root->fs_info->_extent_root = root;
/*
* Some of the paths we test assume we have a filled out fs_info, so we
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index c9f85c4..cc83ae6 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -419,7 +419,7 @@ static int record_root_in_trans(struct btrfs_trans_handle *trans,
if ((test_bit(BTRFS_ROOT_SHAREABLE, &root->state) &&
root->last_trans < trans->transid) || force) {
- WARN_ON(root == fs_info->extent_root);
+ WARN_ON(root == fs_info->_extent_root);
WARN_ON(!force && root->commit_root != root->node);
/*
diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c
index b06059a..5ef430f 100644
--- a/fs/btrfs/zoned.c
+++ b/fs/btrfs/zoned.c
@@ -1154,7 +1154,7 @@ static int calculate_alloc_pointer(struct btrfs_block_group *cache,
u64 *offset_ret)
{
struct btrfs_fs_info *fs_info = cache->fs_info;
- struct btrfs_root *root = fs_info->extent_root;
+ struct btrfs_root *root;
struct btrfs_path *path;
struct btrfs_key key;
struct btrfs_key found_key;
@@ -1169,6 +1169,7 @@ static int calculate_alloc_pointer(struct btrfs_block_group *cache,
key.type = 0;
key.offset = 0;
+ root = btrfs_extent_root(fs_info, key.objectid);
ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
/* We should not find the exact match */
if (!ret)