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authorDavid Howells <dhowells@redhat.com>2018-11-12 22:33:22 +0000
committerDavid S. Miller <davem@davemloft.net>2018-11-15 11:35:40 -0800
commit7150ceaacb27f7b3bf494e72cd4be4e11612dfff (patch)
treecdb1fb191dc649c0f1563045fe17ef0630690b2c /fs/afs/protocol_yfs.h
parentebcd210e93b2a984b7a7b82d45f7f0d21b7ec2d2 (diff)
downloadlinux-7150ceaacb27f7b3bf494e72cd4be4e11612dfff.tar.bz2
rxrpc: Fix life check
The life-checking function, which is used by kAFS to make sure that a call is still live in the event of a pending signal, only samples the received packet serial number counter; it doesn't actually provoke a change in the counter, rather relying on the server to happen to give us a packet in the time window. Fix this by adding a function to force a ping to be transmitted. kAFS then keeps track of whether there's been a stall, and if so, uses the new function to ping the server, resetting the timeout to allow the reply to come back. If there's a stall, a ping and the call is *still* stalled in the same place after another period, then the call will be aborted. Fixes: bc5e3a546d55 ("rxrpc: Use MSG_WAITALL to tell sendmsg() to temporarily ignore signals") Fixes: f4d15fb6f99a ("rxrpc: Provide functions for allowing cleaner handling of signals") Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'fs/afs/protocol_yfs.h')
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