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Diffstat (limited to 'fs/btrfs/extent-tree.c')
-rw-r--r--fs/btrfs/extent-tree.c27
1 files changed, 20 insertions, 7 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 689d25ac6a68..82b912a293ab 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -2835,6 +2835,7 @@ int btrfs_should_throttle_delayed_refs(struct btrfs_trans_handle *trans,
struct async_delayed_refs {
struct btrfs_root *root;
+ u64 transid;
int count;
int error;
int sync;
@@ -2850,6 +2851,10 @@ static void delayed_ref_async_start(struct btrfs_work *work)
async = container_of(work, struct async_delayed_refs, work);
+ /* if the commit is already started, we don't need to wait here */
+ if (btrfs_transaction_blocked(async->root->fs_info))
+ goto done;
+
trans = btrfs_join_transaction(async->root);
if (IS_ERR(trans)) {
async->error = PTR_ERR(trans);
@@ -2861,10 +2866,15 @@ static void delayed_ref_async_start(struct btrfs_work *work)
* wait on delayed refs
*/
trans->sync = true;
+
+ /* Don't bother flushing if we got into a different transaction */
+ if (trans->transid > async->transid)
+ goto end;
+
ret = btrfs_run_delayed_refs(trans, async->root, async->count);
if (ret)
async->error = ret;
-
+end:
ret = btrfs_end_transaction(trans, async->root);
if (ret && !async->error)
async->error = ret;
@@ -2876,7 +2886,7 @@ done:
}
int btrfs_async_run_delayed_refs(struct btrfs_root *root,
- unsigned long count, int wait)
+ unsigned long count, u64 transid, int wait)
{
struct async_delayed_refs *async;
int ret;
@@ -2888,6 +2898,7 @@ int btrfs_async_run_delayed_refs(struct btrfs_root *root,
async->root = root->fs_info->tree_root;
async->count = count;
async->error = 0;
+ async->transid = transid;
if (wait)
async->sync = 1;
else
@@ -8016,8 +8027,9 @@ btrfs_init_new_buffer(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct extent_buffer *buf;
buf = btrfs_find_create_tree_block(root, bytenr);
- if (!buf)
- return ERR_PTR(-ENOMEM);
+ if (IS_ERR(buf))
+ return buf;
+
btrfs_set_header_generation(buf, trans->transid);
btrfs_set_buffer_lockdep_class(root->root_key.objectid, buf, level);
btrfs_tree_lock(buf);
@@ -8044,7 +8056,7 @@ btrfs_init_new_buffer(struct btrfs_trans_handle *trans, struct btrfs_root *root,
set_extent_dirty(&trans->transaction->dirty_pages, buf->start,
buf->start + buf->len - 1, GFP_NOFS);
}
- trans->blocks_used++;
+ trans->dirty = true;
/* this returns a buffer locked for blocking */
return buf;
}
@@ -8659,8 +8671,9 @@ static noinline int do_walk_down(struct btrfs_trans_handle *trans,
next = btrfs_find_tree_block(root->fs_info, bytenr);
if (!next) {
next = btrfs_find_create_tree_block(root, bytenr);
- if (!next)
- return -ENOMEM;
+ if (IS_ERR(next))
+ return PTR_ERR(next);
+
btrfs_set_buffer_lockdep_class(root->root_key.objectid, next,
level - 1);
reada = 1;