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| author | Yan, Zheng <zheng.yan@oracle.com> | 2010-05-16 14:49:59 (GMT) |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2010-05-25 14:34:54 (GMT) |
| commit | 3fd0a5585eb98e074fb9934549c8d85c49756c0d (patch) | |
| tree | 3e7ff9bd9678a5eea62818a2f4a50e19dda91a81 /fs/btrfs/transaction.c | |
| parent | efa56464562991b8c24f965199888806bd8c4b38 (diff) | |
| download | linux-3fd0a5585eb98e074fb9934549c8d85c49756c0d.tar.xz | |
Btrfs: Metadata ENOSPC handling for balance
This patch adds metadata ENOSPC handling for the balance code.
It is consisted by following major changes:
1. Avoid COW tree leave in the phrase of merging tree.
2. Handle interaction with snapshot creation.
3. make the backref cache can live across transactions.
Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/transaction.c')
| -rw-r--r-- | fs/btrfs/transaction.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index cfe7f58..c346d32 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -853,6 +853,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans, goto fail; } + btrfs_reloc_pre_snapshot(trans, pending, &to_reserve); btrfs_orphan_pre_snapshot(trans, pending, &to_reserve); if (to_reserve > 0) { @@ -924,6 +925,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans, pending->snap = btrfs_read_fs_root_no_name(root->fs_info, &key); BUG_ON(IS_ERR(pending->snap)); + btrfs_reloc_post_snapshot(trans, pending); btrfs_orphan_post_snapshot(trans, pending); fail: kfree(new_root_item); @@ -1213,9 +1215,9 @@ int btrfs_clean_old_snapshots(struct btrfs_root *root) if (btrfs_header_backref_rev(root->node) < BTRFS_MIXED_BACKREF_REV) - btrfs_drop_snapshot(root, 0); + btrfs_drop_snapshot(root, NULL, 0); else - btrfs_drop_snapshot(root, 1); + btrfs_drop_snapshot(root, NULL, 1); } return 0; } |