Chuck Lever 6221f1d9b6 SUNRPC: Fix backchannel RPC soft lockups ... Currently, after the forward channel connection goes away, backchannel operations are causing soft lockups on the server because call_transmit_status's SOFTCONN logic ignores ENOTCONN. Such backchannel Calls are aggressively retried until the client reconnects. Backchannel Calls should use RPC_TASK_NOCONNECT rather than RPC_TASK_SOFTCONN. If there is no forward connection, the server is not capable of establishing a connection back to the client, thus that backchannel request should fail before the server attempts to send it. Commit 58255a4e3c ("NFSD: NFSv4 callback client should use RPC_TASK_SOFTCONN") was merged several years before RPC_TASK_NOCONNECT was available. Because setup_callback_client() explicitly sets NOPING, the NFSv4.0 callback connection depends on the first callback RPC to initiate a connection to the client. Thus NFSv4.0 needs to continue to use RPC_TASK_SOFTCONN. Suggested-by: Trond Myklebust <trondmy@hammerspace.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Cc: <stable@vger.kernel.org> # v4.20+		2020-04-17 12:40:31 -04:00
..
acl.h	nfsd: eliminate an unnecessary acl size limit	2019-08-28 21:13:45 -04:00
auth.c	nfsd: auth: Fix gid sorting when rootsquash enabled	2018-01-22 20:13:07 -08:00
auth.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
blocklayout.c	nfsd: convert fi_deleg_file and ls_file fields to nfsd_file	2019-08-19 11:09:09 -04:00
blocklayoutxdr.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
blocklayoutxdr.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
cache.h	nfsd4: drc containerization	2019-07-03 17:52:08 -04:00
current_stateid.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
export.c	nfsd: export upcalls must not return ESTALE when mountd is down	2020-03-16 12:04:33 -04:00
export.h	knfsd: Allow lockless lookups of the exports	2018-10-29 16:58:04 -04:00
fault_inject.c	nfsd: no need to check return value of debugfs_create functions	2019-07-03 16:57:17 +02:00
filecache.c	fs: nfsd: fileache.c: Use built-in RCU list checking	2020-03-16 12:04:31 -04:00
filecache.h	nfsd: convert file cache to use over/underflow safe refcount	2020-02-06 11:22:55 -05:00
flexfilelayout.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
flexfilelayoutxdr.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
flexfilelayoutxdr.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
idmap.h	nfsd: Remove duplicate define of IDMAP_NAMESZ/IDMAP_TYPE_xx	2015-07-20 14:58:46 -04:00
Kconfig	NFSD: Fix NFS server build errors	2020-03-16 12:04:34 -04:00
lockd.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Makefile	nfsd: add a new struct file caching facility to nfsd	2019-08-19 11:00:39 -04:00
netns.h	nfsd: set the server_scope during service startup	2020-03-16 12:04:30 -04:00
nfs2acl.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
nfs3acl.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
nfs3proc.c	nfsd: Ensure sampling of the write verifier is atomic with the write	2020-01-22 16:25:41 -05:00
nfs3xdr.c	nfsd: Ensure sampling of the write verifier is atomic with the write	2020-01-22 16:25:41 -05:00
nfs4acl.c	nfsd: check permissions when setting ACLs	2016-06-24 12:11:52 -04:00
nfs4callback.c	SUNRPC: Fix backchannel RPC soft lockups	2020-04-17 12:40:31 -04:00
nfs4idmap.c	nfsd: export upcalls must not return ESTALE when mountd is down	2020-03-16 12:04:33 -04:00
nfs4layouts.c	nfsd: fix delay timer on 32-bit architectures	2019-12-19 17:46:08 -05:00
nfs4proc.c	nfsd4: fix double free in nfsd4_do_async_copy()	2020-02-06 11:22:55 -05:00
nfs4recover.c	nfsd: make 'boot_time' 64-bit wide	2019-12-19 17:46:08 -05:00
nfs4state.c	nfsd: memory corruption in nfsd4_lock()	2020-04-13 10:28:21 -04:00
nfs4xdr.c	NFSD: Clean up nfsd4_encode_readv	2020-03-16 12:04:31 -04:00
nfscache.c	nfsd4: Fix kernel crash when reading proc file reply_cache_stats	2019-08-16 13:36:55 -04:00
nfsctl.c	nfsd: fsnotify on rmdir under nfsd/clients/	2020-03-19 11:33:42 -04:00
nfsd.h	nfsd: remove nfs4_reset_lease() declarations	2019-12-19 22:07:17 -05:00
nfsfh.c	nfsd: Add tracing to nfsd_set_fh_dentry()	2020-03-16 12:04:33 -04:00
nfsfh.h	nfsd: handle nfs3 timestamps as unsigned	2019-12-19 17:46:08 -05:00
nfsproc.c	nfsd: Ensure sampling of the write verifier is atomic with the write	2020-01-22 16:25:41 -05:00
nfssvc.c	nfsd: set the server_scope during service startup	2020-03-16 12:04:30 -04:00
nfsxdr.c	nfsd: knfsd must use the container user namespace	2019-04-24 09:46:35 -04:00
pnfs.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
state.h	nfsd: use boottime for lease expiry calculation	2019-12-19 22:07:17 -05:00
stats.c	proc: convert everything to "struct proc_ops"	2020-02-04 03:05:26 +00:00
stats.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace.c	nfsd: move include of state.h from trace.c to trace.h	2015-10-23 15:57:29 -04:00
trace.h	nfsd: Add tracepoints for update of the expkey and export cache entries	2020-03-16 12:04:33 -04:00
vfs.c	nfsd: Ensure sampling of the write verifier is atomic with the write	2020-01-22 16:25:41 -05:00
vfs.h	nfsd: Ensure sampling of the write verifier is atomic with the write	2020-01-22 16:25:41 -05:00
xdr3.h	nfsd: Ensure sampling of the write verifier is atomic with the write	2020-01-22 16:25:41 -05:00
xdr4.h	NFSD add nfs4 inter ssc to nfsd4_copy	2019-12-09 11:44:07 -05:00
xdr4cb.h	NFSD CB_OFFLOAD xdr	2018-09-25 20:34:54 -04:00
xdr.h	NFSD: Clean up legacy NFS SYMLINK argument XDR decoders	2018-04-03 15:08:16 -04:00