Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.19 1146/1157] mptcp: refine memory scheduling | Date | Mon, 15 Aug 2022 20:08:22 +0200 |
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From: Paolo Abeni <pabeni@redhat.com>
commit 69d93daec026cdda98e29e8edb12534bfa5b1a9b upstream.
Similar to commit 7c80b038d23e ("net: fix sk_wmem_schedule() and sk_rmem_schedule() errors"), let the MPTCP receive path schedule exactly the required amount of memory.
Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- net/mptcp/protocol.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -323,9 +323,10 @@ static bool mptcp_rmem_schedule(struct s struct mptcp_sock *msk = mptcp_sk(sk); int amt, amount; - if (size < msk->rmem_fwd_alloc) + if (size <= msk->rmem_fwd_alloc) return true; + size -= msk->rmem_fwd_alloc; amt = sk_mem_pages(size); amount = amt << SK_MEM_QUANTUM_SHIFT; msk->rmem_fwd_alloc += amount;
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