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We will store a flag in the lowest bit of sk->sk_memcg.
Then, we cannot pass the raw pointer to mem_cgroup_under_socket_pressure().
Let's pass struct sock to it and rename the function to match other
functions starting with mem_cgroup_sk_.
Note that the helper is moved to sock.h to use mem_cgroup_from_sk().
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Roman Gushchin <roman.gushchin@linux.dev>
Acked-by: Shakeel Butt <shakeel.butt@linux.dev>
Link: https://patch.msgid.link/20250815201712.1745332-10-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The socket memcg feature is enabled by a static key and
only works for non-root cgroup.
We check both conditions in many places.
Let's factorise it as a helper function.
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Roman Gushchin <roman.gushchin@linux.dev>
Acked-by: Shakeel Butt <shakeel.butt@linux.dev>
Link: https://patch.msgid.link/20250815201712.1745332-8-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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sysctl_mem_pcpu_rsv is used in TCP fast path,
move it to net_hodata for better cache locality.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20240429134025.1233626-6-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Move some proto memory definitions out of <net/sock.h>
Very few files need them, and following patch
will include <net/hotdata.h> from <net/proto_memory.h>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20240429134025.1233626-5-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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