[v2,0/2] Some enhancement for kvfree_rcu_mightsleep()

Message

Uladzislau Rezki Sept. 4, 2024, 2:39 p.m. UTC

This is v2. This small change tends to improve even more the slow path
of kvfree_rcu_mightsleep() API. It is hit when a low memory condition
occurs which leads us into two options:
  a) check if a GP is already passed for freed object;
  b) if not, initialize and wait for completion of a new GP.

The differecne between v1 -> v2:
  - Drop "Support dynamic rcu_head for single argument objects" patch;
  - Use cond_synchronize_rcu_full() in a slow path.

Uladzislau Rezki (Sony) (2):
  rcu/kvfree: Use polled API in a slow path
  rcu/kvfree: Switch to expedited version in slow path

 kernel/rcu/tree.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)