Alex Elder c10ebbf55b libceph: init sent and completed when starting ... The rbd code has a need to be able to restart an osd request that has already been started and completed once before. This currently wouldn't work right because the osd client code assumes an osd request will be started exactly once Certain fields in a request are never cleared and this leads to trouble if you try to reuse it. Specifically, the r_sent, r_got_reply, and r_completed fields are never cleared. The r_sent field records the osd incarnation at the time the request was sent to that osd. If that's non-zero, the message won't get re-mapped to a target osd properly, and won't be put on the unsafe requests list the first time it's sent as it should. The r_got_reply field is used in handle_reply() to ensure the reply to a request is processed only once. And the r_completed field is used for lingering requests to avoid calling the callback function every time the osd client re-sends the request on behalf of its initiator. Each osd request passes through ceph_osdc_start_request() when responsibility for the request is handed over to the osd client for completion. We can safely zero these three fields there each time a request gets started. One last related change--clear the r_linger flag when a request is no longer registered as a linger request. This resolves: http://tracker.ceph.com/issues/5026 Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>		2013-05-13 12:52:23 -05:00
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9p
802
8021q
appletalk
atm
ax25
batman-adv
bluetooth
bridge
caif
can
ceph	libceph: init sent and completed when starting	2013-05-13 12:52:23 -05:00
core
dcb
dccp
decnet
dns_resolver
dsa
ethernet
ieee802154
ipv4
ipv6
ipx
irda
iucv
key
l2tp
lapb
llc
mac80211
mac802154
netfilter
netlabel
netlink
netrom
nfc
openvswitch
packet
phonet
rds
rfkill
rose
rxrpc
sched
sctp
sunrpc
tipc
unix
vmw_vsock
wimax
wireless
x25
xfrm
compat.c
Kconfig
Makefile
nonet.c
socket.c
sysctl_net.c