btrfs: call functions that overwrite their root parameter with fs_info
There are 11 functions that accept a root parameter and immediately
overwrite it. We can pass those an fs_info pointer instead.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 1b25a46..51cd757 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2639,7 +2639,7 @@
struct btrfs_root *root);
int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr);
int btrfs_free_block_groups(struct btrfs_fs_info *info);
-int btrfs_read_block_groups(struct btrfs_root *root);
+int btrfs_read_block_groups(struct btrfs_fs_info *info);
int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr);
int btrfs_make_block_group(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 bytes_used,
@@ -3055,7 +3055,7 @@
/* file-item.c */
struct btrfs_dio_private;
int btrfs_del_csums(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, u64 bytenr, u64 len);
+ struct btrfs_fs_info *fs_info, u64 bytenr, u64 len);
int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode,
struct bio *bio, u32 *dst);
int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode,
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 811662c..92c2aea 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2937,7 +2937,7 @@
read_extent_buffer(chunk_root->node, fs_info->chunk_tree_uuid,
btrfs_header_chunk_tree_uuid(chunk_root->node), BTRFS_UUID_SIZE);
- ret = btrfs_read_chunk_tree(chunk_root);
+ ret = btrfs_read_chunk_tree(fs_info);
if (ret) {
btrfs_err(fs_info, "failed to read chunk tree: %d", ret);
goto fail_tree_roots;
@@ -3038,7 +3038,7 @@
goto fail_sysfs;
}
- ret = btrfs_read_block_groups(fs_info->extent_root);
+ ret = btrfs_read_block_groups(fs_info);
if (ret) {
btrfs_err(fs_info, "failed to read block groups: %d", ret);
goto fail_sysfs;
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 0d80136..13ef5d5 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -2414,7 +2414,7 @@
btrfs_pin_extent(root, node->bytenr,
node->num_bytes, 1);
if (head->is_data) {
- ret = btrfs_del_csums(trans, root,
+ ret = btrfs_del_csums(trans, root->fs_info,
node->bytenr,
node->num_bytes);
}
@@ -3622,7 +3622,8 @@
if (cache->disk_cache_state == BTRFS_DC_SETUP) {
cache->io_ctl.inode = NULL;
- ret = btrfs_write_out_cache(root, trans, cache, path);
+ ret = btrfs_write_out_cache(root->fs_info, trans,
+ cache, path);
if (ret == 0 && cache->io_ctl.inode) {
num_started++;
should_put = 0;
@@ -3774,7 +3775,8 @@
if (!ret && cache->disk_cache_state == BTRFS_DC_SETUP) {
cache->io_ctl.inode = NULL;
- ret = btrfs_write_out_cache(root, trans, cache, path);
+ ret = btrfs_write_out_cache(root->fs_info, trans,
+ cache, path);
if (ret == 0 && cache->io_ctl.inode) {
num_started++;
should_put = 0;
@@ -7068,7 +7070,7 @@
btrfs_release_path(path);
if (is_data) {
- ret = btrfs_del_csums(trans, root, bytenr, num_bytes);
+ ret = btrfs_del_csums(trans, info, bytenr, num_bytes);
if (ret) {
btrfs_abort_transaction(trans, ret);
goto out;
@@ -9925,12 +9927,12 @@
return cache;
}
-int btrfs_read_block_groups(struct btrfs_root *root)
+int btrfs_read_block_groups(struct btrfs_fs_info *info)
{
+ struct btrfs_root *root = info->extent_root;
struct btrfs_path *path;
int ret;
struct btrfs_block_group_cache *cache;
- struct btrfs_fs_info *info = root->fs_info;
struct btrfs_space_info *space_info;
struct btrfs_key key;
struct btrfs_key found_key;
@@ -9943,7 +9945,6 @@
feature = btrfs_super_incompat_flags(info->super_copy);
mixed = !!(feature & BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS);
- root = info->extent_root;
key.objectid = 0;
key.offset = 0;
key.type = BTRFS_BLOCK_GROUP_ITEM_KEY;
@@ -10733,7 +10734,7 @@
* Btrfs_remove_chunk will abort the transaction if things go
* horribly wrong.
*/
- ret = btrfs_remove_chunk(trans, root,
+ ret = btrfs_remove_chunk(trans, fs_info,
block_group->key.objectid);
if (ret) {
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index 5e74178..41c1145 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -590,8 +590,9 @@
* range of bytes.
*/
int btrfs_del_csums(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, u64 bytenr, u64 len)
+ struct btrfs_fs_info *fs_info, u64 bytenr, u64 len)
{
+ struct btrfs_root *root = fs_info->csum_root;
struct btrfs_path *path;
struct btrfs_key key;
u64 end_byte = bytenr + len;
@@ -601,8 +602,6 @@
u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
int blocksize_bits = root->fs_info->sb->s_blocksize_bits;
- root = root->fs_info->csum_root;
-
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index c698dcc..a538133 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -1350,17 +1350,16 @@
goto out;
}
-int btrfs_write_out_cache(struct btrfs_root *root,
+int btrfs_write_out_cache(struct btrfs_fs_info *fs_info,
struct btrfs_trans_handle *trans,
struct btrfs_block_group_cache *block_group,
struct btrfs_path *path)
{
+ struct btrfs_root *root = fs_info->tree_root;
struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
struct inode *inode;
int ret = 0;
- root = root->fs_info->tree_root;
-
spin_lock(&block_group->lock);
if (block_group->disk_cache_state < BTRFS_DC_SETUP) {
spin_unlock(&block_group->lock);
diff --git a/fs/btrfs/free-space-cache.h b/fs/btrfs/free-space-cache.h
index 363fdd9..70e7a7c 100644
--- a/fs/btrfs/free-space-cache.h
+++ b/fs/btrfs/free-space-cache.h
@@ -72,7 +72,7 @@
struct btrfs_block_group_cache *block_group,
struct btrfs_io_ctl *io_ctl,
struct btrfs_path *path, u64 offset);
-int btrfs_write_out_cache(struct btrfs_root *root,
+int btrfs_write_out_cache(struct btrfs_fs_info *fs_info,
struct btrfs_trans_handle *trans,
struct btrfs_block_group_cache *block_group,
struct btrfs_path *path);
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 9517de0..88be1f8 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -1219,10 +1219,9 @@
* update all the cowonly tree roots on disk
*/
static noinline int commit_fs_roots(struct btrfs_trans_handle *trans,
- struct btrfs_root *root)
+ struct btrfs_fs_info *fs_info)
{
struct btrfs_root *gang[8];
- struct btrfs_fs_info *fs_info = root->fs_info;
int i;
int ret;
int err = 0;
@@ -1236,7 +1235,7 @@
if (ret == 0)
break;
for (i = 0; i < ret; i++) {
- root = gang[i];
+ struct btrfs_root *root = gang[i];
radix_tree_tag_clear(&fs_info->fs_roots_radix,
(unsigned long)root->root_key.objectid,
BTRFS_ROOT_TRANS_TAG);
@@ -1343,7 +1342,7 @@
*/
mutex_lock(&fs_info->tree_log_mutex);
- ret = commit_fs_roots(trans, src);
+ ret = commit_fs_roots(trans, fs_info);
if (ret)
goto out;
ret = btrfs_qgroup_prepare_account_extents(trans, fs_info);
@@ -2132,7 +2131,7 @@
*/
mutex_lock(&root->fs_info->tree_log_mutex);
- ret = commit_fs_roots(trans, root);
+ ret = commit_fs_roots(trans, root->fs_info);
if (ret) {
mutex_unlock(&root->fs_info->tree_log_mutex);
mutex_unlock(&root->fs_info->reloc_mutex);
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index e0478f5..72bd398 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -797,9 +797,9 @@
list);
if (!ret)
ret = btrfs_del_csums(trans,
- root->fs_info->csum_root,
- sums->bytenr,
- sums->len);
+ root->fs_info,
+ sums->bytenr,
+ sums->len);
if (!ret)
ret = btrfs_csum_file_blocks(trans,
root->fs_info->csum_root,
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 1886b94..17ab4b6 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1667,9 +1667,10 @@
* the btrfs_device struct should be fully filled in
*/
static int btrfs_add_device(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
+ struct btrfs_fs_info *fs_info,
struct btrfs_device *device)
{
+ struct btrfs_root *root = fs_info->chunk_root;
int ret;
struct btrfs_path *path;
struct btrfs_dev_item *dev_item;
@@ -1677,8 +1678,6 @@
struct btrfs_key key;
unsigned long ptr;
- root = root->fs_info->chunk_root;
-
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
@@ -1737,16 +1736,15 @@
filp_close(filp, NULL);
}
-static int btrfs_rm_dev_item(struct btrfs_root *root,
+static int btrfs_rm_dev_item(struct btrfs_fs_info *fs_info,
struct btrfs_device *device)
{
+ struct btrfs_root *root = fs_info->chunk_root;
int ret;
struct btrfs_path *path;
struct btrfs_key key;
struct btrfs_trans_handle *trans;
- root = root->fs_info->chunk_root;
-
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
@@ -1909,7 +1907,7 @@
* counter although write_all_supers() is not locked out. This
* could give a filesystem state which requires a degraded mount.
*/
- ret = btrfs_rm_dev_item(root->fs_info->chunk_root, device);
+ ret = btrfs_rm_dev_item(root->fs_info, device);
if (ret)
goto error_undo;
@@ -2241,8 +2239,9 @@
* Store the expected generation for seed devices in device items.
*/
static int btrfs_finish_sprout(struct btrfs_trans_handle *trans,
- struct btrfs_root *root)
+ struct btrfs_fs_info *fs_info)
{
+ struct btrfs_root *root = fs_info->chunk_root;
struct btrfs_path *path;
struct extent_buffer *leaf;
struct btrfs_dev_item *dev_item;
@@ -2257,7 +2256,6 @@
if (!path)
return -ENOMEM;
- root = root->fs_info->chunk_root;
key.objectid = BTRFS_DEV_ITEMS_OBJECTID;
key.offset = 0;
key.type = BTRFS_DEV_ITEM_KEY;
@@ -2452,7 +2450,7 @@
}
}
- ret = btrfs_add_device(trans, root, device);
+ ret = btrfs_add_device(trans, root->fs_info, device);
if (ret) {
btrfs_abort_transaction(trans, ret);
goto error_trans;
@@ -2461,7 +2459,7 @@
if (seeding_dev) {
char fsid_buf[BTRFS_UUID_UNPARSED_SIZE];
- ret = btrfs_finish_sprout(trans, root);
+ ret = btrfs_finish_sprout(trans, root->fs_info);
if (ret) {
btrfs_abort_transaction(trans, ret);
goto error_trans;
@@ -2716,14 +2714,14 @@
}
static int btrfs_free_chunk(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, u64 chunk_objectid,
+ struct btrfs_fs_info *fs_info, u64 chunk_objectid,
u64 chunk_offset)
{
+ struct btrfs_root *root = fs_info->chunk_root;
int ret;
struct btrfs_path *path;
struct btrfs_key key;
- root = root->fs_info->chunk_root;
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
@@ -2800,8 +2798,9 @@
}
int btrfs_remove_chunk(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, u64 chunk_offset)
+ struct btrfs_fs_info *fs_info, u64 chunk_offset)
{
+ struct btrfs_root *root = fs_info->chunk_root;
struct extent_map_tree *em_tree;
struct extent_map *em;
struct btrfs_root *extent_root = root->fs_info->extent_root;
@@ -2811,9 +2810,7 @@
int i, ret = 0;
struct btrfs_fs_devices *fs_devices = root->fs_info->fs_devices;
- /* Just in case */
- root = root->fs_info->chunk_root;
- em_tree = &root->fs_info->mapping_tree.map_tree;
+ em_tree = &fs_info->mapping_tree.map_tree;
read_lock(&em_tree->lock);
em = lookup_extent_mapping(em_tree, chunk_offset, 1);
@@ -2875,7 +2872,8 @@
}
mutex_unlock(&fs_devices->device_list_mutex);
- ret = btrfs_free_chunk(trans, root, chunk_objectid, chunk_offset);
+ ret = btrfs_free_chunk(trans, root->fs_info, chunk_objectid,
+ chunk_offset);
if (ret) {
btrfs_abort_transaction(trans, ret);
goto out;
@@ -2903,15 +2901,13 @@
return ret;
}
-static int btrfs_relocate_chunk(struct btrfs_root *root, u64 chunk_offset)
+static int btrfs_relocate_chunk(struct btrfs_fs_info *fs_info, u64 chunk_offset)
{
- struct btrfs_root *extent_root;
+ struct btrfs_root *root = fs_info->chunk_root;
+ struct btrfs_root *extent_root = fs_info->extent_root;
struct btrfs_trans_handle *trans;
int ret;
- root = root->fs_info->chunk_root;
- extent_root = root->fs_info->extent_root;
-
/*
* Prevent races with automatic removal of unused block groups.
* After we relocate and before we remove the chunk with offset
@@ -2949,7 +2945,7 @@
* step two, delete the device extents and the
* chunk tree entries
*/
- ret = btrfs_remove_chunk(trans, root, chunk_offset);
+ ret = btrfs_remove_chunk(trans, fs_info, chunk_offset);
btrfs_end_transaction(trans, extent_root);
return ret;
}
@@ -3003,7 +2999,7 @@
btrfs_release_path(path);
if (chunk_type & BTRFS_BLOCK_GROUP_SYSTEM) {
- ret = btrfs_relocate_chunk(chunk_root,
+ ret = btrfs_relocate_chunk(root->fs_info,
found_key.offset);
if (ret == -ENOSPC)
failed++;
@@ -3669,8 +3665,7 @@
chunk_reserved = 1;
}
- ret = btrfs_relocate_chunk(chunk_root,
- found_key.offset);
+ ret = btrfs_relocate_chunk(fs_info, found_key.offset);
mutex_unlock(&fs_info->delete_unused_bgs_mutex);
if (ret && ret != -ENOSPC)
goto error;
@@ -4439,7 +4434,7 @@
chunk_offset = btrfs_dev_extent_chunk_offset(l, dev_extent);
btrfs_release_path(path);
- ret = btrfs_relocate_chunk(root, chunk_offset);
+ ret = btrfs_relocate_chunk(root->fs_info, chunk_offset);
mutex_unlock(&root->fs_info->delete_unused_bgs_mutex);
if (ret && ret != -ENOSPC)
goto done;
@@ -6785,8 +6780,9 @@
return -EIO;
}
-int btrfs_read_chunk_tree(struct btrfs_root *root)
+int btrfs_read_chunk_tree(struct btrfs_fs_info *fs_info)
{
+ struct btrfs_root *root = fs_info->chunk_root;
struct btrfs_path *path;
struct extent_buffer *leaf;
struct btrfs_key key;
@@ -6795,8 +6791,6 @@
int slot;
u64 total_dev = 0;
- root = root->fs_info->chunk_root;
-
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 9029a31..416574f 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -407,7 +407,7 @@
u64 chunk_start, u64 physical, u64 devid,
u64 **logical, int *naddrs, int *stripe_len);
int btrfs_read_sys_array(struct btrfs_root *root);
-int btrfs_read_chunk_tree(struct btrfs_root *root);
+int btrfs_read_chunk_tree(struct btrfs_fs_info *fs_info);
int btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
struct btrfs_root *extent_root, u64 type);
void btrfs_mapping_init(struct btrfs_mapping_tree *tree);
@@ -483,7 +483,7 @@
struct btrfs_root *extent_root,
u64 chunk_offset, u64 chunk_size);
int btrfs_remove_chunk(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, u64 chunk_offset);
+ struct btrfs_fs_info *fs_info, u64 chunk_offset);
static inline int btrfs_dev_stats_dirty(struct btrfs_device *dev)
{