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Btrfs: remove no longer used stuff for tracking pending ordered extents

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Tracking pending ordered extents per transaction was introduced in commit
50d9aa99bd ("Btrfs: make sure logged extents complete in the current
transaction V3") and later updated in commit 161c3549b4 ("Btrfs: change
how we wait for pending ordered extents").

However now that on fsync we always wait for ordered extents to complete
before logging, done in commit 5636cf7d6d ("btrfs: remove the logged
extents infrastructure"), we no longer need the stuff to track for pending
ordered extents, which was not completely removed in the mentioned commit.
So remove the remaining of the pending ordered extents infrastructure.

Reviewed-by: Liu Bo <bo.liu@linux.alibaba.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Filipe Manana
2018-10-26 17:15:21 +01:00
committed by David Sterba
parent ce02f03266
commit 85dd506c8e
4 changed files with 0 additions and 45 deletions
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30
fs/btrfs/ordered-data.c
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@@ -460,7 +460,6 @@ void btrfs_remove_ordered_extent(struct inode *inode,
struct btrfs_inode *btrfs_inode = BTRFS_I(inode);
struct btrfs_root *root = btrfs_inode->root;
struct rb_node *node;
bool dec_pending_ordered = false;
/* This is paired with btrfs_add_ordered_extent. */
spin_lock(&btrfs_inode->lock);
@@ -477,37 +476,8 @@ void btrfs_remove_ordered_extent(struct inode *inode,
if (tree->last == node)
tree->last = NULL;
set_bit(BTRFS_ORDERED_COMPLETE, &entry->flags);
if (test_and_clear_bit(BTRFS_ORDERED_PENDING, &entry->flags))
dec_pending_ordered = true;
spin_unlock_irq(&tree->lock);
/*
* The current running transaction is waiting on us, we need to let it
* know that we're complete and wake it up.
*/
if (dec_pending_ordered) {
struct btrfs_transaction *trans;
/*
* The checks for trans are just a formality, it should be set,
* but if it isn't we don't want to deref/assert under the spin
* lock, so be nice and check if trans is set, but ASSERT() so
* if it isn't set a developer will notice.
*/
spin_lock(&fs_info->trans_lock);
trans = fs_info->running_transaction;
if (trans)
refcount_inc(&trans->use_count);
spin_unlock(&fs_info->trans_lock);
ASSERT(trans);
if (trans) {
if (atomic_dec_and_test(&trans->pending_ordered))
wake_up(&trans->pending_wait);
btrfs_put_transaction(trans);
}
}
spin_lock(&root->ordered_extent_lock);
list_del_init(&entry->root_extent_list);
root->nr_ordered_extents--;