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Diffstat (limited to 'fs/btrfs/transaction.c')
-rw-r--r--fs/btrfs/transaction.c49
1 files changed, 23 insertions, 26 deletions
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index c5c0d9cf1a80..89ae0c7a610a 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -103,7 +103,7 @@ static struct kmem_cache *btrfs_trans_handle_cachep;
* | attached to transid N+1. |
* | |
* | To next stage: |
- * | Until all tree blocks are super blocks are |
+ * | Until all tree blocks and super blocks are |
* | written to block devices |
* V |
* Transaction N [[TRANS_STATE_COMPLETED]] V
@@ -404,7 +404,7 @@ loop:
*/
static int record_root_in_trans(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
- int force)
+ bool force)
{
struct btrfs_fs_info *fs_info = root->fs_info;
int ret = 0;
@@ -1569,7 +1569,7 @@ static int qgroup_account_snapshot(struct btrfs_trans_handle *trans,
* qgroup counters could end up wrong.
*/
ret = btrfs_run_delayed_refs(trans, U64_MAX);
- if (ret) {
+ if (unlikely(ret)) {
btrfs_abort_transaction(trans, ret);
return ret;
}
@@ -1641,7 +1641,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
struct btrfs_root *parent_root;
struct btrfs_block_rsv *rsv;
struct btrfs_inode *parent_inode = pending->dir;
- struct btrfs_path *path;
+ BTRFS_PATH_AUTO_FREE(path);
struct btrfs_dir_item *dir_item;
struct extent_buffer *tmp;
struct extent_buffer *old;
@@ -1694,10 +1694,6 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
goto clear_skip_qgroup;
}
- key.objectid = objectid;
- key.type = BTRFS_ROOT_ITEM_KEY;
- key.offset = (u64)-1;
-
rsv = trans->block_rsv;
trans->block_rsv = &pending->block_rsv;
trans->bytes_reserved = trans->block_rsv->reserved;
@@ -1714,7 +1710,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
* insert the directory item
*/
ret = btrfs_set_inode_index(parent_inode, &index);
- if (ret) {
+ if (unlikely(ret)) {
btrfs_abort_transaction(trans, ret);
goto fail;
}
@@ -1735,7 +1731,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
ret = btrfs_create_qgroup(trans, objectid);
if (ret && ret != -EEXIST) {
- if (ret != -ENOTCONN || btrfs_qgroup_enabled(fs_info)) {
+ if (unlikely(ret != -ENOTCONN || btrfs_qgroup_enabled(fs_info))) {
btrfs_abort_transaction(trans, ret);
goto fail;
}
@@ -1748,13 +1744,13 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
* snapshot
*/
ret = btrfs_run_delayed_items(trans);
- if (ret) { /* Transaction aborted */
+ if (unlikely(ret)) {
btrfs_abort_transaction(trans, ret);
goto fail;
}
ret = record_root_in_trans(trans, root, 0);
- if (ret) {
+ if (unlikely(ret)) {
btrfs_abort_transaction(trans, ret);
goto fail;
}
@@ -1789,7 +1785,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
old = btrfs_lock_root_node(root);
ret = btrfs_cow_block(trans, root, old, NULL, 0, &old,
BTRFS_NESTING_COW);
- if (ret) {
+ if (unlikely(ret)) {
btrfs_tree_unlock(old);
free_extent_buffer(old);
btrfs_abort_transaction(trans, ret);
@@ -1800,21 +1796,23 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
/* clean up in any case */
btrfs_tree_unlock(old);
free_extent_buffer(old);
- if (ret) {
+ if (unlikely(ret)) {
btrfs_abort_transaction(trans, ret);
goto fail;
}
/* see comments in should_cow_block() */
set_bit(BTRFS_ROOT_FORCE_COW, &root->state);
- smp_wmb();
+ smp_mb__after_atomic();
btrfs_set_root_node(new_root_item, tmp);
/* record when the snapshot was created in key.offset */
+ key.objectid = objectid;
+ key.type = BTRFS_ROOT_ITEM_KEY;
key.offset = trans->transid;
ret = btrfs_insert_root(trans, tree_root, &key, new_root_item);
btrfs_tree_unlock(tmp);
free_extent_buffer(tmp);
- if (ret) {
+ if (unlikely(ret)) {
btrfs_abort_transaction(trans, ret);
goto fail;
}
@@ -1826,7 +1824,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
btrfs_root_id(parent_root),
btrfs_ino(parent_inode), index,
&fname.disk_name);
- if (ret) {
+ if (unlikely(ret)) {
btrfs_abort_transaction(trans, ret);
goto fail;
}
@@ -1841,7 +1839,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
}
ret = btrfs_reloc_post_snapshot(trans, pending);
- if (ret) {
+ if (unlikely(ret)) {
btrfs_abort_transaction(trans, ret);
goto fail;
}
@@ -1864,7 +1862,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
ret = btrfs_insert_dir_item(trans, &fname.disk_name,
parent_inode, &key, BTRFS_FT_DIR,
index);
- if (ret) {
+ if (unlikely(ret)) {
btrfs_abort_transaction(trans, ret);
goto fail;
}
@@ -1874,14 +1872,14 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
inode_set_mtime_to_ts(&parent_inode->vfs_inode,
inode_set_ctime_current(&parent_inode->vfs_inode));
ret = btrfs_update_inode_fallback(trans, parent_inode);
- if (ret) {
+ if (unlikely(ret)) {
btrfs_abort_transaction(trans, ret);
goto fail;
}
ret = btrfs_uuid_tree_add(trans, new_root_item->uuid,
BTRFS_UUID_KEY_SUBVOL,
objectid);
- if (ret) {
+ if (unlikely(ret)) {
btrfs_abort_transaction(trans, ret);
goto fail;
}
@@ -1889,7 +1887,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
ret = btrfs_uuid_tree_add(trans, new_root_item->received_uuid,
BTRFS_UUID_KEY_RECEIVED_SUBVOL,
objectid);
- if (ret && ret != -EEXIST) {
+ if (unlikely(ret && ret != -EEXIST)) {
btrfs_abort_transaction(trans, ret);
goto fail;
}
@@ -1907,7 +1905,6 @@ free_fname:
free_pending:
kfree(new_root_item);
pending->root_item = NULL;
- btrfs_free_path(path);
pending->path = NULL;
return ret;
@@ -2423,7 +2420,7 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans)
* them.
*
* We needn't worry that this operation will corrupt the snapshots,
- * because all the tree which are snapshoted will be forced to COW
+ * because all the tree which are snapshotted will be forced to COW
* the nodes and leaves.
*/
ret = btrfs_run_delayed_items(trans);
@@ -2657,9 +2654,9 @@ int btrfs_clean_one_deleted_snapshot(struct btrfs_fs_info *fs_info)
if (btrfs_header_backref_rev(root->node) <
BTRFS_MIXED_BACKREF_REV)
- ret = btrfs_drop_snapshot(root, 0, 0);
+ ret = btrfs_drop_snapshot(root, false, false);
else
- ret = btrfs_drop_snapshot(root, 1, 0);
+ ret = btrfs_drop_snapshot(root, true, false);
btrfs_put_root(root);
return (ret < 0) ? 0 : 1;
generated by cgit v1.2.3 (git 2.46.0) at 2025-10-01 12:30:10 +0000