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linux/fs/nfs
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Chuck Lever 7b8fb2a4d3 NFS: Zero-stateid SETATTR should first return delegation 
[ Upstream commit 644c9f40cf71969f29add32f32349e71d4995c0b ]

If a write delegation isn't available, the Linux NFS client uses
a zero-stateid when performing a SETATTR.

NFSv4.0 provides no mechanism for an NFS server to match such a
request to a particular client. It recalls all delegations for that
file, even delegations held by the client issuing the request. If
that client happens to hold a read delegation, the server will
recall it immediately, resulting in an NFS4ERR_DELAY/CB_RECALL/
DELEGRETURN sequence.

Optimize out this pipeline bubble by having the client return any
delegations it may hold on a file before it issues a
SETATTR(zero-stateid) on that file.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-09-23 12:40:36 +02:00
..
blocklayout
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
filelayout
pNFS/filelayout: enable LAYOUTGET on OPEN
2019-09-24 16:28:38 -04:00
flexfilelayout
pNFS/flexfiles: Fix list corruption if the mirror count changes
2020-06-30 15:37:12 -04:00
cache_lib.c
NFS client updates for Linux 4.15
2017-11-17 14:18:00 -08:00
cache_lib.h
NFS client updates for Linux 4.15
2017-11-17 14:18:00 -08:00
callback_proc.c
NFSv4/pnfs: Return valid stateids in nfs_layout_find_inode_by_stateid()
2020-04-23 10:36:31 +02:00
callback_xdr.c
SUNRPC/nfs: Fix return value for nfs4_callback_compound()
2019-04-24 09:46:34 -04:00
callback.c
SUNRPC: Cache the process user cred in the RPC server listener
2019-04-24 09:46:35 -04:00
callback.h
NFS CB_OFFLOAD xdr
2018-08-09 12:56:38 -04:00
client.c
nfs: add minor version to nfs_server_key for fscache
2020-04-01 11:01:50 +02:00
delegation.c
NFS: Fix an RCU lock leak in nfs4_refresh_delegation_stateid()
2019-11-01 11:03:56 -04:00
delegation.h
NFSv4: Don't allow a cached open with a revoked delegation
2019-11-01 10:59:26 -04:00
dir.c
NFS: Directory page cache pages need to be locked when read
2020-02-11 04:35:32 -08:00
direct.c
SUNRPC reverting d03727b248d0 ("NFSv4 fix CLOSE not waiting for direct IO compeletion")
2020-07-29 10:18:29 +02:00
dns_resolve.c
keys: Pass the network namespace into request_key mechanism
2019-06-27 23:02:12 +01:00
dns_resolve.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
NFS: Pass the inode down to the getattr() callback
2018-06-04 12:07:07 -04:00
file.c
nfs: nfs_file_write() should check for writeback errors
2020-08-21 13:05:36 +02:00
fscache-index.c
nfs: fscache: use timespec64 in inode auxdata
2020-05-20 08:20:23 +02:00
fscache.c
NFSv4: Fix fscache cookie aux_data to ensure change_attr is included
2020-05-20 08:20:23 +02:00
fscache.h
nfs: fscache: use timespec64 in inode auxdata
2020-05-20 08:20:23 +02:00
getroot.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
inode.c
nfs: set invalid blocks after NFSv4 writes
2020-06-24 17:50:44 +02:00
internal.h
NFS Client Updates for Linux 5.3
2019-09-26 12:20:14 -07:00
io.c
NFS: Fix up documentation warnings
2019-02-20 15:14:21 -05:00
iostat.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
Kconfig
nfs: NFS_SWAP should depend on SWAP
2020-02-14 16:34:10 -05:00
Makefile
NFS: Create a root NFS directory in /sys/fs/nfs
2019-07-06 14:54:49 -04:00
mount_clnt.c
NFSv3: fix rpc receive buffer size for MOUNT call
2020-05-20 08:20:27 +02:00
namespace.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
netns.h
NFS: Add sysfs support for per-container identifier
2019-07-06 14:54:49 -04:00
nfs2super.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
nfs2xdr.c
NFSv2: Fix a typo in encode_sattr()
2020-01-17 19:48:47 +01:00
nfs3_fs.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nfs3acl.c
nfs: Fix potential posix_acl refcnt leak in nfs3_set_acl
2020-05-06 08:15:16 +02:00
nfs3client.c
pNFS: Allow multiple connections to the DS
2019-07-06 14:54:50 -04:00
nfs3proc.c
NFSv3: use nfs_add_or_obtain() to create and reference inodes
2019-09-20 15:15:24 -04:00
nfs3super.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
nfs3xdr.c
NFS/pnfs: Fix pnfs_generic_prepare_to_resend_writes()
2020-02-14 16:34:10 -05:00
nfs4_fs.h
NFSv4.0: nfs4_do_fsinfo() should not do implicit lease renewals
2020-02-14 16:34:11 -05:00
nfs4client.c
nfs: add minor version to nfs_server_key for fscache
2020-04-01 11:01:50 +02:00
nfs4file.c
nfs: ensure correct writeback errors are returned on close()
2020-08-21 13:05:35 +02:00
nfs4getroot.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nfs4idmap.c
Revert "Merge tag 'keys-acl-20190703' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs"
2019-07-10 18:43:43 -07:00
nfs4idmap.h
…
nfs4namespace.c
NFS: Fix up documentation warnings
2019-02-20 15:14:21 -05:00
nfs4proc.c
NFS: Zero-stateid SETATTR should first return delegation
2020-09-23 12:40:36 +02:00
nfs4renewd.c
NFSv4.0: nfs4_do_fsinfo() should not do implicit lease renewals
2020-02-14 16:34:11 -05:00
nfs4session.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
nfs4session.h
NFSv4.1: Bump the default callback session slot count to 16
2019-03-02 16:25:26 -05:00
nfs4state.c
nfs: fix NULL deference in nfs4_get_valid_delegation
2020-05-20 08:20:24 +02:00
nfs4super.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
nfs4sysctl.c
nfs: Do not convert nfs_idmap_cache_timeout to jiffies
2018-01-18 15:10:47 -05:00
nfs4trace.c
pnfs/flexfiles: Add tracepoints for detecting pnfs fallback to MDS
2019-07-18 15:50:28 -04:00
nfs4trace.h
NFS: Fix fix of show_nfs_errors
2020-02-14 16:34:10 -05:00
nfs4xdr.c
nfs: Fix getxattr kernel panic and memory overflow
2020-08-21 13:05:37 +02:00
nfs42.h
NFSv4.2: Add client support for the generic 'layouterror' RPC call
2019-03-01 16:20:16 -05:00
nfs42proc.c
NFS: Fix memory leaks
2020-02-24 08:37:02 +01:00
nfs42xdr.c
NFSv4.2: Add client support for the generic 'layouterror' RPC call
2019-03-01 16:20:16 -05:00
nfs.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nfsroot.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nfstrace.c
NFS: Add trace events to report non-zero NFS status codes
2019-02-13 12:03:21 -05:00
nfstrace.h
kill LOOKUP_NO_EVAL, don't bother including namei.h from audit.h
2019-08-30 21:29:32 -04:00
pagelist.c
NFS: Fix memory leaks in nfs_pageio_stop_mirroring()
2020-04-23 10:36:38 +02:00
pnfs_dev.c
NFS/flexfiles: Speed up read failover when DSes are down
2019-03-01 22:37:38 -05:00
pnfs_nfs.c
NFS/pnfs: Fix pnfs_generic_prepare_to_resend_writes()
2020-02-14 16:34:10 -05:00
pnfs.c
NFS: Don't return layout segments that are in use
2020-08-19 08:16:25 +02:00
pnfs.h
pNFS: Handle NFS4ERR_OLD_STATEID on layoutreturn by bumping the state seqid
2019-09-20 15:48:35 -04:00
proc.c
NFSv2: Fix write regression
2019-08-27 10:24:56 -04:00
read.c
NFS: Fix spurious EIO read errors
2019-08-26 15:31:29 -04:00
super.c
NFS Client Updates for Linux 5.3
2019-09-26 12:20:14 -07:00
symlink.c
nfs: pass the correct prototype to read_cache_page
2019-05-09 16:26:57 -04:00
sysctl.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
sysfs.c
NFS: Add sysfs support for per-container identifier
2019-07-06 14:54:49 -04:00
sysfs.h
NFS: Add sysfs support for per-container identifier
2019-07-06 14:54:49 -04:00
unlink.c
fsnotify: move fsnotify_nameremove() hook out of d_delete()
2019-06-20 14:47:44 +02:00
write.c
NFS: Fix a page leak in nfs_destroy_unlinked_subrequests()
2020-04-17 10:50:20 +02:00