[0/2] Scrub allocations vs reclaim fix

Message

David Sterba Dec. 4, 2018, 3:11 p.m. UTC

I've instrumented the scrub alloctions to check for the GFP_NOFS context
and whether the device_list_mutex is not held. This caught one
allocation, and I've used the instrumented code to verify that Filipe's
scrub/reclaim fix is correct.

There are some debugging helpers need that live in the generic code so
I'm posting only results. The patches are in branch dev/locks-not-held
in my devel repos.

David Sterba (2):
  btrfs: scrub: pass fs_info to scrub_setup_ctx
  btrfs: scrub: move scrub_setup_ctx allocation out of device_list_mutex

 fs/btrfs/scrub.c | 37 +++++++++++++++++++++----------------
 1 file changed, 21 insertions(+), 16 deletions(-)