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(parent: 91b6d32) | patch
tcp: small optimization in tcp recvmsg()
authorEric Dumazet <edumazet@google.com>
Mon, 15 Nov 2021 19:02:40 +0000 (11:02 -0800)
committerDavid S. Miller <davem@davemloft.net>
Tue, 16 Nov 2021 13:10:34 +0000 (13:10 +0000)
commit93afcfd1db35882921b2521a637c78755c27b02c
treee5bd0dd1290a879e31023cef54113e98fb876611tree | snapshot
parent91b6d325635617540b6a1646ddb138bb17cbd569commit | diff
tcp: small optimization in tcp recvmsg()

When reading large chunks of data, incoming packets might
be added to the backlog from BH.

tcp recvmsg() detects the backlog queue is not empty, and uses
a release_sock()/lock_sock() pair to process this backlog.

We now have __sk_flush_backlog() to perform this
a bit faster.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/tcp.c diff | blob | history
Domain: System / Kernel;