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7e5d0e0de0
linux/fs/nfsd
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Trond Myklebust 7e5d0e0de0 nfsd: Do not refuse to serve out of cache 
Currently the knfsd replay cache appears to try to refuse replying to
retries that come within 200ms of the cache entry being created. That
makes limited sense in today's world of high speed TCP.

After a TCP disconnection, a client can very easily reconnect and retry
an rpc in less than 200ms.  If this logic drops that retry, however, the
client may be quite slow to retry again.  This logic is original to the
first reply cache implementation in 2.1, and may have made more sense
for UDP clients that retried much more frequently.

After this patch we will still drop on finding the original request
still in progress.  We may want to fix that as well at some point,
though it's less likely.

Note that svc_check_conn_limits is often the cause of those
disconnections.  We may want to fix that some day.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Acked-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2018-05-11 15:48:57 -04:00
..
acl.h nfsd4: remove nfs4_acl_new 2014-07-08 17:14:27 -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: make nfsd4_scsi_identify_device retry with a larger buffer 2018-05-11 12:20:29 -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 nfsd: Do not refuse to serve out of cache 2018-05-11 15:48:57 -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: make cache_detail structures const 2017-11-27 16:45:11 -05:00
export.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fault_inject.c Lots of good bugfixes, including: 2017-11-18 11:22:04 -08:00
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 block: make scsi_request and scsi ioctl support optional 2017-01-31 10:53:05 -07:00
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 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
netns.h race of nfsd inetaddr notifiers vs nn->nfsd_serv change 2017-11-27 16:45:11 -05:00
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: Clean up legacy NFS SYMLINK argument XDR decoders 2018-04-03 15:08:16 -04:00
nfs3xdr.c NFSD: Clean up legacy NFS SYMLINK argument XDR decoders 2018-04-03 15:08:16 -04:00
nfs4acl.c nfsd: check permissions when setting ACLs 2016-06-24 12:11:52 -04:00
nfs4callback.c nfsd: use correct enum type in decode_cb_op_status 2018-04-03 15:08:08 -04:00
nfs4idmap.c NFSD: make cache_detail structures const 2017-11-27 16:45:11 -05:00
nfs4layouts.c nfsd: Add "nfsd_" to trace point names 2018-04-03 15:08:14 -04:00
nfs4proc.c nfsd: fix incorrect umasks 2018-04-03 16:27:08 -04:00
nfs4recover.c Various bugfixes, a RDMA update from Chuck Lever, and support for a new 2016-03-24 10:41:00 -07:00
nfs4state.c nfsd: fix boolreturn.cocci warnings 2018-04-03 15:08:08 -04:00
nfs4xdr.c nfsd: restrict rd_maxcount to svc_max_payload in nfsd_encode_readdir 2018-05-07 13:00:48 -04:00
nfscache.c nfsd: Do not refuse to serve out of cache 2018-05-11 15:48:57 -04:00
nfsctl.c race of nfsd inetaddr notifiers vs nn->nfsd_serv change 2017-11-27 16:45:11 -05:00
nfsd.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfsfh.c nfsd: don't require low ports for gss requests 2018-03-19 16:38:13 -04:00
nfsfh.h This request is late, apologies. 2018-02-08 15:18:32 -08:00
nfsproc.c NFSD: Clean up legacy NFS SYMLINK argument XDR decoders 2018-04-03 15:08:16 -04:00
nfssvc.c race of nfsd inetaddr notifiers vs nn->nfsd_serv change 2017-11-27 16:45:11 -05:00
nfsxdr.c NFSD: Clean up legacy NFS SYMLINK argument XDR decoders 2018-04-03 15:08:16 -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 fs, nfsd: convert nfs4_file.fi_ref from atomic_t to refcount_t 2017-11-07 16:43:59 -05:00
stats.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
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: Trace NFSv4 COMPOUND execution 2018-04-03 15:08:15 -04:00
vfs.c nfsd: Add I/O trace points in the NFSv4 read proc 2018-04-03 15:08:15 -04:00
vfs.h nfsd: Add I/O trace points in the NFSv4 read proc 2018-04-03 15:08:15 -04:00
xdr3.h NFSD: Clean up legacy NFS SYMLINK argument XDR decoders 2018-04-03 15:08:16 -04:00
xdr4.h nfsd: fix incorrect umasks 2018-04-03 16:27:08 -04:00
xdr4cb.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xdr.h NFSD: Clean up legacy NFS SYMLINK argument XDR decoders 2018-04-03 15:08:16 -04:00