[TCWG-CI] Success after linux commit: 23 commits in linux

In CI config tcwg_kernel/llvm-master-arm-next-allmodconfig after:
  | linux commits:
  | 33d1971ea18722121dd0f18445493d9e395d6434 btrfs: don't create inline extents in fallback_to_cow
  | 11965d2adbb71f032cbdfbb23dec4c673487c446 btrfs: pass a flags argument to cow_file_range
  | 4e67a6a825b23ebd1c53fec300bc38c4e4282001 btrfs: check for commit error at btrfs_attach_transaction_barrier()
  | 28d330cc9ee1241e0fc29d0911b2888d37700d7f btrfs: check if the transaction was aborted at btrfs_wait_for_commit()
  | 4b58f033c89bfa41948259c19def42b1b6e36eb3 btrfs: account block group tree when calculating global reserve size
  | ... and 18 more

Results changed to
# reset_artifacts:
-10
# build_abe binutils:
-9
# build_kernel_llvm:
-5
# build_abe qemu:
-2
# linux_n_obj:
32477
# linux build successful:
all
# linux boot successful:
boot

From
# reset_artifacts:
-10
# build_abe binutils:
-9
# build_kernel_llvm:
-5
# build_abe qemu:
-2
# linux_n_obj:
32480
# linux build successful:
all
# linux boot successful:
boot



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The information below can be used to reproduce a debug environment:

Current build   : https://ci.linaro.org/job/tcwg_kernel--llvm-master-arm-next-allmodconfig-build/96/artifact/artifacts
Reference build : https://ci.linaro.org/job/tcwg_kernel--llvm-master-arm-next-allmodconfig-build/93/artifact/artifacts