Kinglong Mee d6fc8821c2 SUNRPC/Cache: Always treat the invalid cache as unexpired ... When the first time pynfs runs after rpc/nfsd startup, always get the warning, "Got error: Connection closed" I found the problem is caused by, 1. A new startup of nfsd, rpc.mountd, etc, 2. A rpc request from client (pynfs test, or normal mounting), 3. An ip_map cache is created but invalid, so upcall to rpc.mountd, 4. rpc.mountd process the ip_map upcall, before write the valid data to nfsd, do auth_reload(), and check_useipaddr(), 5. For the first time, old_use_ipaddr = -1, it causes rpc.mountd do write_flush that doing cache_clean, 6. The ip_map cache will be treat as expired and clean, 7. When rpc.mountd write the valid data to nfsd, a new ip_map is created and updated, the cache_check of old ip_map(doing the upcall) will return -ETIMEDOUT. 8. RPC layer return SVC_CLOSE and close the xprt after commit 4d712ef1db "svcauth_gss: Close connection when dropping an incoming message" NeilBrown suggest in another email, "If CACHE_VALID is not set, then there is no data in the cache item, so there is nothing to expire. So it would be nice if cache items that don't have CACHE_VALID are never treated as expired." v3, change the order of the two patches v2, change the checking of CACHE_PENDING to CACHE_VALID Reviewed-by: NeilBrown <neilb@suse.com> Signed-off-by: Kinglong Mee <kinglongmee@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>		2017-02-08 16:49:53 -05:00
..
addr.h
auth_gss.h
auth.h	sunrpc: add hash_cred() function to rpc_authops struct	2016-09-30 15:28:46 -04:00
bc_xprt.h
cache.h	SUNRPC/Cache: Always treat the invalid cache as unexpired	2017-02-08 16:49:53 -05:00
clnt.h	SUNRPC: cleanup ida information when removing sunrpc module	2017-01-24 15:29:24 -05:00
debug.h
gss_api.h	xprtrdma: No direct data placement with krb5i and krb5p	2016-07-11 15:50:43 -04:00
gss_asn1.h
gss_err.h
gss_krb5_enctypes.h
gss_krb5.h	sunrpc: Use skcipher and ahash/shash	2016-01-27 20:36:01 +08:00
metrics.h
msg_prot.h	sunrpc: Update RPCBIND_MAXNETIDLEN	2016-05-17 15:47:56 -04:00
rpc_pipe_fs.h
rpc_rdma.h	svcrdma: Another sendto chunk list parsing update	2017-02-08 14:41:24 -05:00
sched.h	SUNRPC: Generalize the RPC buffer release API	2016-09-19 13:08:37 -04:00
stats.h
svc_rdma.h	svcrdma: Combine list fields in struct svc_rdma_op_ctxt	2017-02-08 14:42:00 -05:00
svc_xprt.h	sunrpc: don't call sleeping functions from the notifier block callbacks	2017-01-12 15:56:40 -05:00
svc.h	SUNRPC: Add a server side per-connection limit	2016-07-13 15:53:48 -04:00
svcauth_gss.h
svcauth.h	vfs: make the string hashes salt the hash	2016-06-10 20:21:46 -07:00
svcsock.h
timer.h
types.h
xdr.h	SUNRPC: Refactor rpc_xdr_buf_init()	2016-09-19 13:08:37 -04:00
xprt.h	SUNRPC: Add a transport-specific private field in rpc_rqst	2016-09-19 13:08:37 -04:00
xprtmultipath.h	SUNRPC search xprt switch for sockaddr	2016-09-19 13:08:36 -04:00
xprtrdma.h	xprtrdma: Support larger inline thresholds	2016-09-19 13:08:38 -04:00
xprtsock.h	SUNRPC: Small optimisation of client receive	2016-06-13 12:35:51 -04:00