From b24e03db0df3e9164c9649db12fecc8c2d81b0d1 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Fri, 14 Oct 2011 14:40:17 -0400 Subject: [PATCH] Btrfs: release trans metadata bytes before flushing delayed refs We started setting trans->block_rsv = NULL to allow the delayed refs flushing stuff to use the right block_rsv and then just made btrfs_trans_release_metadata() unconditionally use the trans block rsv. The problem with this is we need to reserve some space in the transaction and then migrate it to the global block rsv, so we need to be able to free that out properly. So instead just move btrfs_trans_release_metadata() before the delayed ref flushing and use trans->block_rsv for the freeing. Thanks, Signed-off-by: Josef Bacik --- fs/btrfs/extent-tree.c | 5 +---- fs/btrfs/transaction.c | 6 ++---- 2 files changed, 3 insertions(+), 8 deletions(-) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 424ae82855c8..eb4fe56b08bb 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -3909,13 +3909,10 @@ static void release_global_block_rsv(struct btrfs_fs_info *fs_info) void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, struct btrfs_root *root) { - struct btrfs_block_rsv *block_rsv; - if (!trans->bytes_reserved) return; - block_rsv = &root->fs_info->trans_block_rsv; - btrfs_block_rsv_release(root, block_rsv, trans->bytes_reserved); + btrfs_block_rsv_release(root, trans->block_rsv, trans->bytes_reserved); trans->bytes_reserved = 0; } diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 1e1a4816ccb0..d064fa0a4a07 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -462,6 +462,7 @@ static int __btrfs_end_transaction(struct btrfs_trans_handle *trans, return 0; } + btrfs_trans_release_metadata(trans, root); trans->block_rsv = NULL; while (count < 4) { unsigned long cur = trans->delayed_ref_updates; @@ -483,8 +484,6 @@ static int __btrfs_end_transaction(struct btrfs_trans_handle *trans, count++; } - btrfs_trans_release_metadata(trans, root); - if (lock && !atomic_read(&root->fs_info->open_ioctl_trans) && should_end_transaction(trans, root)) { trans->transaction->blocked = 1; @@ -1128,6 +1127,7 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans, btrfs_run_ordered_operations(root, 0); + btrfs_trans_release_metadata(trans, root); trans->block_rsv = NULL; /* make a pass through all the delayed refs we have so far @@ -1136,8 +1136,6 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans, ret = btrfs_run_delayed_refs(trans, root, 0); BUG_ON(ret); - btrfs_trans_release_metadata(trans, root); - cur_trans = trans->transaction; /* * set the flushing flag so procs in this transaction have to -- GitLab