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Btrfs: Integrate metadata reservation with start_transaction

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Besides simplify the code, this change makes sure all metadata
reservation for normal metadata operations are released after
committing transaction.

Changes since V1:

Add code that check if unlink and rmdir will free space.

Add ENOSPC handling for clone ioctl.

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Yan, Zheng
2010-05-16 10:48:46 -04:00
committed by Chris Mason
parent f0486c68e4
commit a22285a6a3
15 changed files with 685 additions and 535 deletions
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18
fs/btrfs/relocation.c
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@@ -1649,7 +1649,7 @@ static noinline_for_stack int merge_reloc_root(struct reloc_control *rc,
}
if (level == 0 && rc->stage == UPDATE_DATA_PTRS) {
trans = btrfs_start_transaction(root, 1);
trans = btrfs_start_transaction(root, 0);
leaf = path->nodes[0];
btrfs_item_key_to_cpu(leaf, &key, 0);
@@ -1675,7 +1675,7 @@ static noinline_for_stack int merge_reloc_root(struct reloc_control *rc,
while (1) {
leaf = NULL;
replaced = 0;
trans = btrfs_start_transaction(root, 1);
trans = btrfs_start_transaction(root, 0);
max_level = level;
ret = walk_down_reloc_tree(reloc_root, path, &level);
@@ -1803,7 +1803,7 @@ static void merge_func(struct btrfs_work *work)
merge_reloc_root(async->rc, root);
trans = btrfs_start_transaction(root, 1);
trans = btrfs_start_transaction(root, 0);
btrfs_update_reloc_root(trans, root);
btrfs_end_transaction(trans, root);
}
@@ -3297,11 +3297,11 @@ static noinline_for_stack int relocate_block_group(struct reloc_control *rc)
rc->create_reloc_root = 1;
set_reloc_control(rc);
trans = btrfs_start_transaction(rc->extent_root, 1);
trans = btrfs_join_transaction(rc->extent_root, 1);
btrfs_commit_transaction(trans, rc->extent_root);
while (1) {
trans = btrfs_start_transaction(rc->extent_root, 1);
trans = btrfs_start_transaction(rc->extent_root, 0);
ret = find_next_extent(trans, rc, path);
if (ret < 0)
@@ -3411,7 +3411,7 @@ static noinline_for_stack int relocate_block_group(struct reloc_control *rc)
smp_mb();
if (rc->extents_found > 0) {
trans = btrfs_start_transaction(rc->extent_root, 1);
trans = btrfs_join_transaction(rc->extent_root, 1);
btrfs_commit_transaction(trans, rc->extent_root);
}
@@ -3420,7 +3420,7 @@ static noinline_for_stack int relocate_block_group(struct reloc_control *rc)
unset_reloc_control(rc);
/* get rid of pinned extents */
trans = btrfs_start_transaction(rc->extent_root, 1);
trans = btrfs_join_transaction(rc->extent_root, 1);
btrfs_commit_transaction(trans, rc->extent_root);
return err;
@@ -3475,7 +3475,7 @@ static struct inode *create_reloc_inode(struct btrfs_fs_info *fs_info,
if (IS_ERR(root))
return ERR_CAST(root);
trans = btrfs_start_transaction(root, 1);
trans = btrfs_start_transaction(root, 6);
BUG_ON(!trans);
err = btrfs_find_free_objectid(trans, root, objectid, &objectid);
@@ -3619,7 +3619,7 @@ static noinline_for_stack int mark_garbage_root(struct btrfs_root *root)
struct btrfs_trans_handle *trans;
int ret;
trans = btrfs_start_transaction(root->fs_info->tree_root, 1);
trans = btrfs_start_transaction(root->fs_info->tree_root, 0);
memset(&root->root_item.drop_progress, 0,
sizeof(root->root_item.drop_progress));