Currently the memcg's status is also accounted into the socket's
memory pressure to alleviate the memcg's memstall. But there are
still cases that can be improved. Please check the patches for
detailed info.
v4:
- Per Shakeel's suggestion, removed the patch that suppresses
allocation under net-memcg pressure to avoid further keeping
the senders waiting if SACKed segments get dropped from the
OFO queue.
v3:
- Fixed some coding style issues pointed out by Simon
- Fold dependency into memcg pressure func to improve readability
v2:
- Splited into several patches and modified commit log for
better readability.
- Make memcg's pressure consideration function-wide in
__sk_mem_raise_allocated().
v1: https://lore.kernel.org/lkml/20230506085903.96133-1-wuyun.abel@xxxxxxxxxxxxx/
v2: https://lore.kernel.org/lkml/20230522070122.6727-1-wuyun.abel@xxxxxxxxxxxxx/
v3: https://lore.kernel.org/lkml/20230523094652.49411-1-wuyun.abel@xxxxxxxxxxxxx/
Abel Wu (4):
net-memcg: Fold dependency into memcg pressure cond
sock: Always take memcg pressure into consideration
sock: Fix misuse of sk_under_memory_pressure()
sock: Remove redundant cond of memcg pressure
include/linux/memcontrol.h | 2 ++
include/net/sock.h | 14 ++++++++------
include/net/tcp.h | 3 +--
net/core/sock.c | 10 ++++++++--
4 files changed, 19 insertions(+), 10 deletions(-)
--
2.37.3
