[PATCH 0/3] btrfs: fix a couple sleeps while holding a spinlock

[fdmanana@kernel.org]

From: Filipe Manana <fdmanana@suse.com>

After the recent conversions of a couple radix trees to XArrays, we now
can end up attempting to sleep while holding a spinlock. This happens
because if xa_insert() allocates memory (using GFP_NOFS) it may need to
sleep (more likely to happen when under memory pressure). In the old
code this did not happen because we had radix_tree_preload() called
before taking the spinlocks.

Filipe Manana (3):
  btrfs: fix sleep while under a spinlock when allocating delayed inode
  btrfs: fix sleep while under a spinlock when inserting a fs root
  btrfs: free qgroup metadata without holding the fs roots lock

 fs/btrfs/ctree.h         |  6 +++---
 fs/btrfs/delayed-inode.c | 24 ++++++++++++------------
 fs/btrfs/disk-io.c       | 38 +++++++++++++++++++-------------------
 fs/btrfs/inode.c         | 30 ++++++++++++++++--------------
 fs/btrfs/relocation.c    | 11 +++++++----
 fs/btrfs/transaction.c   | 14 +++++++-------
 6 files changed, 64 insertions(+), 59 deletions(-)

-- 
2.35.1