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| author | Chris Mason <chris.mason@oracle.com> | 2008-07-17 12:54:14 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-25 11:04:04 -0400 |
| commit | f9295749388f82c8d2f485e99c72cd7c7876a99b (patch) | |
| tree | 5089b0f723583d262116775b8b9fb5b4b8d291e0 /fs/btrfs/transaction.h | |
| parent | dbe674a99c8af088faa4c95eddaeb271a3140ab6 (diff) | |
| download | lwn-f9295749388f82c8d2f485e99c72cd7c7876a99b.tar.gz lwn-f9295749388f82c8d2f485e99c72cd7c7876a99b.zip | |
btrfs_start_transaction: wait for commits in progress to finish
btrfs_commit_transaction has to loop waiting for any writers in the
transaction to finish before it can proceed. btrfs_start_transaction
should be polite and not join a transaction that is in the process
of being finished off.
There are a few places that can't wait, basically the ones doing IO that
might be needed to finish the transaction. For them, btrfs_join_transaction
is added.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/transaction.h')
| -rw-r--r-- | fs/btrfs/transaction.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h index 910350cd4cf0..11fbdeceb26c 100644 --- a/fs/btrfs/transaction.h +++ b/fs/btrfs/transaction.h @@ -27,6 +27,7 @@ struct btrfs_transaction { int in_commit; int use_count; int commit_done; + int blocked; struct list_head list; struct extent_io_tree dirty_pages; unsigned long start_time; @@ -75,6 +76,8 @@ int btrfs_end_transaction(struct btrfs_trans_handle *trans, struct btrfs_root *root); struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root, int num_blocks); +struct btrfs_trans_handle *btrfs_join_transaction(struct btrfs_root *root, + int num_blocks); int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans, struct btrfs_root *root); int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans, |