From 41ce9970a8a6a362ae8df145f7a03d789e9ef9d2 Mon Sep 17 00:00:00 2001 From: Wang Shilong Date: Tue, 17 Dec 2013 19:57:21 +0800 Subject: [PATCH] Btrfs: remove transaction from btrfs send Since daivd did the work that force us to use readonly snapshot, we can safely remove transaction protection from btrfs send. Signed-off-by: Wang Shilong Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- fs/btrfs/send.c | 33 --------------------------------- 1 file changed, 33 deletions(-) diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index 572e8c75871..78a43b2e5c8 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -4618,7 +4618,6 @@ out: static int full_send_tree(struct send_ctx *sctx) { int ret; - struct btrfs_trans_handle *trans = NULL; struct btrfs_root *send_root = sctx->send_root; struct btrfs_key key; struct btrfs_key found_key; @@ -4640,19 +4639,6 @@ static int full_send_tree(struct send_ctx *sctx) key.type = BTRFS_INODE_ITEM_KEY; key.offset = 0; -join_trans: - /* - * We need to make sure the transaction does not get committed - * while we do anything on commit roots. Join a transaction to prevent - * this. - */ - trans = btrfs_join_transaction(send_root); - if (IS_ERR(trans)) { - ret = PTR_ERR(trans); - trans = NULL; - goto out; - } - /* * Make sure the tree has not changed after re-joining. We detect this * by comparing start_ctransid and ctransid. They should always match. @@ -4676,19 +4662,6 @@ join_trans: goto out_finish; while (1) { - /* - * When someone want to commit while we iterate, end the - * joined transaction and rejoin. - */ - if (btrfs_should_end_transaction(trans, send_root)) { - ret = btrfs_end_transaction(trans, send_root); - trans = NULL; - if (ret < 0) - goto out; - btrfs_release_path(path); - goto join_trans; - } - eb = path->nodes[0]; slot = path->slots[0]; btrfs_item_key_to_cpu(eb, &found_key, slot); @@ -4716,12 +4689,6 @@ out_finish: out: btrfs_free_path(path); - if (trans) { - if (!ret) - ret = btrfs_end_transaction(trans, send_root); - else - btrfs_end_transaction(trans, send_root); - } return ret; } -- 2.43.2