Merge tag 'for-5.6-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"These are fixes that were found during testing with help of error
injection, plus some other stable material.
There's a fixup to patch added to rc1 causing locking in wrong context
warnings, tests found one more deadlock scenario. The patches are
tagged for stable, two of them now in the queue but we'd like all
three released at the same time.
I'm not happy about fixes to fixes in such a fast succession during
rcs, but I hope we found all the fallouts of commit 28553fa992cb
('Btrfs: fix race between shrinking truncate and fiemap')"
* tag 'for-5.6-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
Btrfs: fix deadlock during fast fsync when logging prealloc extents beyond eof
Btrfs: fix btrfs_wait_ordered_range() so that it waits for all ordered extents
btrfs: fix bytes_may_use underflow in prealloc error condtition
btrfs: handle logged extent failure properly
btrfs: do not check delayed items are empty for single transaction cleanup
btrfs: reset fs_root to NULL on error in open_ctree
btrfs: destroy qgroup extent records on transaction abort
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 89422aa..c6c9a6a 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3200,6 +3200,7 @@
if (IS_ERR(fs_info->fs_root)) {
err = PTR_ERR(fs_info->fs_root);
btrfs_warn(fs_info, "failed to read fs tree: %d", err);
+ fs_info->fs_root = NULL;
goto fail_qgroup;
}
@@ -4276,6 +4277,7 @@
cond_resched();
spin_lock(&delayed_refs->lock);
}
+ btrfs_qgroup_destroy_extent_records(trans);
spin_unlock(&delayed_refs->lock);
@@ -4501,7 +4503,6 @@
wake_up(&fs_info->transaction_wait);
btrfs_destroy_delayed_inodes(fs_info);
- btrfs_assert_delayed_root_empty(fs_info);
btrfs_destroy_marked_extents(fs_info, &cur_trans->dirty_pages,
EXTENT_DIRTY);
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 0163fdd..a7bc661 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4430,6 +4430,8 @@
ret = alloc_reserved_file_extent(trans, 0, root_objectid, 0, owner,
offset, ins, 1);
+ if (ret)
+ btrfs_pin_extent(fs_info, ins->objectid, ins->offset, 1);
btrfs_put_block_group(block_group);
return ret;
}
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 36deef6..1ccb3f8 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4103,8 +4103,9 @@
return -ENOMEM;
path->reada = READA_BACK;
- lock_extent_bits(&BTRFS_I(inode)->io_tree, lock_start, (u64)-1,
- &cached_state);
+ if (root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID)
+ lock_extent_bits(&BTRFS_I(inode)->io_tree, lock_start, (u64)-1,
+ &cached_state);
/*
* We want to drop from the next block forward in case this new size is
@@ -4368,11 +4369,10 @@
if (!ret && last_size > new_size)
last_size = new_size;
btrfs_ordered_update_i_size(inode, last_size, NULL);
+ unlock_extent_cached(&BTRFS_I(inode)->io_tree, lock_start,
+ (u64)-1, &cached_state);
}
- unlock_extent_cached(&BTRFS_I(inode)->io_tree, lock_start, (u64)-1,
- &cached_state);
-
btrfs_free_path(path);
return ret;
}
@@ -9824,6 +9824,7 @@
struct btrfs_root *root = BTRFS_I(inode)->root;
struct btrfs_key ins;
u64 cur_offset = start;
+ u64 clear_offset = start;
u64 i_size;
u64 cur_bytes;
u64 last_alloc = (u64)-1;
@@ -9858,6 +9859,15 @@
btrfs_end_transaction(trans);
break;
}
+
+ /*
+ * We've reserved this space, and thus converted it from
+ * ->bytes_may_use to ->bytes_reserved. Any error that happens
+ * from here on out we will only need to clear our reservation
+ * for the remaining unreserved area, so advance our
+ * clear_offset by our extent size.
+ */
+ clear_offset += ins.offset;
btrfs_dec_block_group_reservations(fs_info, ins.objectid);
last_alloc = ins.offset;
@@ -9937,9 +9947,9 @@
if (own_trans)
btrfs_end_transaction(trans);
}
- if (cur_offset < end)
- btrfs_free_reserved_data_space(inode, NULL, cur_offset,
- end - cur_offset + 1);
+ if (clear_offset < end)
+ btrfs_free_reserved_data_space(inode, NULL, clear_offset,
+ end - clear_offset + 1);
return ret;
}
diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c
index ecb9fb6..a65f189 100644
--- a/fs/btrfs/ordered-data.c
+++ b/fs/btrfs/ordered-data.c
@@ -679,10 +679,15 @@
}
btrfs_start_ordered_extent(inode, ordered, 1);
end = ordered->file_offset;
+ /*
+ * If the ordered extent had an error save the error but don't
+ * exit without waiting first for all other ordered extents in
+ * the range to complete.
+ */
if (test_bit(BTRFS_ORDERED_IOERR, &ordered->flags))
ret = -EIO;
btrfs_put_ordered_extent(ordered);
- if (ret || end == 0 || end == start)
+ if (end == 0 || end == start)
break;
end--;
}
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 98d9a50..ff1870f 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -4002,3 +4002,16 @@
}
return ret;
}
+
+void btrfs_qgroup_destroy_extent_records(struct btrfs_transaction *trans)
+{
+ struct btrfs_qgroup_extent_record *entry;
+ struct btrfs_qgroup_extent_record *next;
+ struct rb_root *root;
+
+ root = &trans->delayed_refs.dirty_extent_root;
+ rbtree_postorder_for_each_entry_safe(entry, next, root, node) {
+ ulist_free(entry->old_roots);
+ kfree(entry);
+ }
+}
diff --git a/fs/btrfs/qgroup.h b/fs/btrfs/qgroup.h
index 236f122..1bc6544 100644
--- a/fs/btrfs/qgroup.h
+++ b/fs/btrfs/qgroup.h
@@ -414,5 +414,6 @@
u64 last_snapshot);
int btrfs_qgroup_trace_subtree_after_cow(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct extent_buffer *eb);
+void btrfs_qgroup_destroy_extent_records(struct btrfs_transaction *trans);
#endif
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 33dcc88..beb6c69 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -121,6 +121,8 @@
BUG_ON(!list_empty(&transaction->list));
WARN_ON(!RB_EMPTY_ROOT(
&transaction->delayed_refs.href_root.rb_root));
+ WARN_ON(!RB_EMPTY_ROOT(
+ &transaction->delayed_refs.dirty_extent_root));
if (transaction->delayed_refs.pending_csums)
btrfs_err(transaction->fs_info,
"pending csums is %llu",
