afs: Fix vlserver probe RTT handling
authorDavid Howells <dhowells@redhat.com>
Fri, 16 Jun 2023 21:39:39 +0000 (22:39 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 21 Jun 2023 14:01:02 +0000 (16:01 +0200)
commit616aba553640d68656e30f6302e0fbc9dd8285c1
tree38e3a2367d4f231aa517753e6c0f001488d3f186
parent34dc1eed9918b1883de936ca2966130f5e8852ce
afs: Fix vlserver probe RTT handling

[ Upstream commit ba00b190670809c1a89326d80de96d714f6004f2 ]

In the same spirit as commit ca57f02295f1 ("afs: Fix fileserver probe
RTT handling"), don't rule out using a vlserver just because there
haven't been enough packets yet to calculate a real rtt.  Always set the
server's probe rtt from the estimate provided by rxrpc_kernel_get_srtt,
which is capped at 1 second.

This could lead to EDESTADDRREQ errors when accessing a cell for the
first time, even though the vl servers are known and have responded to a
probe.

Fixes: 1d4adfaf6574 ("rxrpc: Make rxrpc_kernel_get_srtt() indicate validity")
Signed-off-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: linux-afs@lists.infradead.org
Link: http://lists.infradead.org/pipermail/linux-afs/2023-June/006746.html
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
fs/afs/vl_probe.c