Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
tcp: Remove stale locking comment for TFO.
The listener -> child locking no longer exists in the fast path
since commit e994b2f0fb92 ("tcp: do not lock listener to process
SYN packets").
Let's remove the stale comment for reqsk_fastopen_remove().
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20250923005441.4131554-1-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
authored by
Kuniyuki Iwashima
and committed by
Jakub Kicinski
dc1dea79
e8ab2317
+1
-3
+1
-3
net/core/request_sock.c
+1
-3
net/core/request_sock.c
···
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* a simple spin lock - one must consider sock_owned_by_user() and arrange
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* to use sk_add_backlog() stuff. But what really makes it infeasible is the
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* locking hierarchy violation. E.g., inet_csk_listen_stop() may try to
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-
* acquire a child's lock while holding listener's socket lock. A corner
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* case might also exist in tcp_v4_hnd_req() that will trigger this locking
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* order.
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+
* acquire a child's lock while holding listener's socket lock.
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*
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* This function also sets "treq->tfo_listener" to false.
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* treq->tfo_listener is used by the listener so it is protected by the