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(parent: d397749) | 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)
commit0b988644af4fb76d3a04032f139eed22bb6b77ef
treee5bd0dd1290a879e31023cef54113e98fb876611tree | snapshot
parentd397749f74dfb553881b56f424f4ffbd416e6107commit | 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
Linux Kernel Source Tree.