It's unnecessary to do qgroups accounting without enabling quota.
Signed-off-by: Liu Bo <bo.li....@oracle.com>
---
v6:
* don't record seq for qgroups with quota disabled as we do not need to,
and keep the checker of qgroups.
fs/btrfs/ctree.c | 2 +-
fs/btrfs/delayed-ref.c | 18 ++++++++++++++----
fs/btrfs/qgroup.c | 3 +++
3 files changed, 18 insertions(+), 5 deletions(-)
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index d5387dd..2d22ddf 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -408,7 +408,7 @@ u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info,
tree_mod_log_write_lock(fs_info);
spin_lock(&fs_info->tree_mod_seq_lock);
- if (!elem->seq) {
+ if (elem && !elem->seq) {
elem->seq = btrfs_inc_tree_mod_seq_major(fs_info);
list_add_tail(&elem->list, &fs_info->tree_mod_seq_list);
}
diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c
index 73a3e55..af57cfc 100644
--- a/fs/btrfs/delayed-ref.c
+++ b/fs/btrfs/delayed-ref.c
@@ -691,8 +691,13 @@ static noinline void add_delayed_tree_ref(struct
btrfs_fs_info *fs_info,
ref->is_head = 0;
ref->in_tree = 1;
- if (need_ref_seq(for_cow, ref_root))
- seq = btrfs_get_tree_mod_seq(fs_info, &trans->delayed_ref_elem);
+ if (need_ref_seq(for_cow, ref_root)) {
+ struct seq_list *elem = NULL;
+
+ if (fs_info->quota_enabled)
+ elem = &trans->delayed_ref_elem;
+ seq = btrfs_get_tree_mod_seq(fs_info, elem);
+ }
ref->seq = seq;
full_ref = btrfs_delayed_node_to_tree_ref(ref);
@@ -750,8 +755,13 @@ static noinline void add_delayed_data_ref(struct
btrfs_fs_info *fs_info,
ref->is_head = 0;
ref->in_tree = 1;
- if (need_ref_seq(for_cow, ref_root))
- seq = btrfs_get_tree_mod_seq(fs_info, &trans->delayed_ref_elem);
+ if (need_ref_seq(for_cow, ref_root)) {
+ struct seq_list *elem = NULL;
+
+ if (fs_info->quota_enabled)
+ elem = &trans->delayed_ref_elem;
+ seq = btrfs_get_tree_mod_seq(fs_info, elem);
+ }
ref->seq = seq;
full_ref = btrfs_delayed_node_to_data_ref(ref);
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 1280eff..780ff14 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -1200,6 +1200,9 @@ int btrfs_qgroup_record_ref(struct btrfs_trans_handle
*trans,
{
struct qgroup_update *u;
+ if (!trans->root->fs_info->quota_enabled)
+ return 0;
+
BUG_ON(!trans->delayed_ref_elem.seq);
u = kmalloc(sizeof(*u), GFP_NOFS);
if (!u)
--
1.7.7
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