[PATCH v3 5/7] btrfs: remove global rsv stealing logic for orphan cleanup

[Josef Bacik <josef@toxicpanda.com>]

This is very old code before we were stealing from the global reserve
during evict.  We have proper ways to steal from the global reserve
while we're evicting, so rip out this code as it's no longer necessary.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
---
 fs/btrfs/space-info.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/fs/btrfs/space-info.c b/fs/btrfs/space-info.c
index f72d70051f5b..6b65baec33d4 100644
--- a/fs/btrfs/space-info.c
+++ b/fs/btrfs/space-info.c
@@ -1601,16 +1601,9 @@ int btrfs_reserve_metadata_bytes(struct btrfs_root *root,
 				 enum btrfs_reserve_flush_enum flush)
 {
 	struct btrfs_fs_info *fs_info = root->fs_info;
-	struct btrfs_block_rsv *global_rsv = &fs_info->global_block_rsv;
 	int ret;
 
 	ret = __reserve_bytes(fs_info, block_rsv->space_info, orig_bytes, flush);
-	if (ret == -ENOSPC &&
-	    unlikely(root->orphan_cleanup_state == ORPHAN_CLEANUP_STARTED)) {
-		if (block_rsv != global_rsv &&
-		    !btrfs_block_rsv_use_bytes(global_rsv, orig_bytes))
-			ret = 0;
-	}
 	if (ret == -ENOSPC) {
 		trace_btrfs_space_reservation(fs_info, "space_info:enospc",
 					      block_rsv->space_info->flags,
-- 
2.26.3