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Chuck Lever 644c9f40cf NFS: Zero-stateid SETATTR should first return delegation 
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>
2020-09-05 10:39:41 -04:00
..
blocklayout
rpc_pipefs: convert comma to semicolon
2020-08-12 09:46:22 -04:00
filelayout
NFS/pNFS: Clean up pNFS commit operations
2020-03-27 16:34:35 -04:00
flexfilelayout
NFS: Fix flexfiles read failover
2020-08-12 11:20:29 -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: Add support for CB_RECALL_ANY for flexfiles layouts
2020-03-16 08:34:30 -04:00
callback_xdr.c
NFS4: Report callback authentication errors
2020-01-15 10:54:31 -05:00
callback.c
SUNRPC: Cache the process user cred in the RPC server listener
2019-04-24 09:46:35 -04:00
callback.h
NFSv4: Add support for CB_RECALL_ANY for flexfiles layouts
2020-03-16 08:34:30 -04:00
client.c
NFSv4.2: query the server for extended attribute support
2020-07-13 17:52:45 -04:00
delegation.c
NFS: Beware when dereferencing the delegation cred
2020-04-03 18:26:02 -04:00
delegation.h
NFSv4: Ensure the delegation is pinned in nfs_do_return_delegation()
2020-02-13 16:18:50 -05:00
dir.c
NFSv4.2: query the extended attribute access bits
2020-07-13 17:52:45 -04:00
direct.c
NFS client updates for Linux 5.9
2020-08-15 08:26:55 -07:00
dns_resolve.c
NFS: remove duplicate headers
2020-05-27 10:10:12 -04:00
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: Add a tracepoint in nfs_fh_to_dentry()
2019-11-03 21:28:46 -05:00
file.c
NFS client updates for Linux 5.9
2020-08-15 08:26:55 -07:00
fs_context.c
fs: nfs: delete repeated words in comments
2020-08-12 09:46:22 -04:00
fscache-index.c
nfs: fscache: use timespec64 in inode auxdata
2020-01-15 10:54:30 -05:00
fscache.c
NFSv4: Fix fscache cookie aux_data to ensure change_attr is included
2020-05-08 22:20:24 +01:00
fscache.h
nfs: fscache: use timespec64 in inode auxdata
2020-01-15 10:54:30 -05:00
getroot.c
NFS: Ensure security label is set for root inode
2020-03-30 19:56:50 -04:00
inode.c
Merge branch 'xattr-devel'
2020-07-17 10:35:48 -04:00
internal.h
mm/writeback: discard NR_UNSTABLE_NFS, use NR_WRITEBACK instead
2020-06-02 10:59:08 -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
Documentation: nfsroot.rst: Fix references to nfsroot.rst
2020-03-02 13:11:46 -07:00
Makefile
NFSv4.2: add client side xattr caching.
2020-07-13 17:52:46 -04:00
mount_clnt.c
NFSv3: fix rpc receive buffer size for MOUNT call
2020-05-14 18:42:44 -04:00
namespace.c
NFS: Add a module parameter to set nfs_mountpoint_expiry_timeout
2020-04-02 18:53:59 -04:00
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
nfs: remove timespec from xdr_encode_nfstime
2020-01-15 10:54:30 -05:00
nfs3_fs.h
NFS: Additional refactoring for fs_context conversion
2020-01-15 10:15:17 -05:00
nfs3acl.c
nfs: Fix potential posix_acl refcnt leak in nfs3_set_acl
2020-04-20 09:58:59 -04:00
nfs3client.c
NFS: Additional refactoring for fs_context conversion
2020-01-15 10:15:17 -05:00
nfs3proc.c
NFS: move dprintk after nfs_alloc_fattr in nfs3_proc_lookup
2020-05-27 10:08:26 -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()
2020-01-15 10:54:32 -05:00
nfs4_fs.h
NFS client updates for Linux 5.9
2020-08-15 08:26:55 -07:00
nfs4client.c
NFSv4.0 allow nconnect for v4.0
2020-07-17 13:16:23 -04:00
nfs4file.c
nfs: ensure correct writeback errors are returned on close()
2020-08-01 15:37:48 -04:00
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 memory leak of export_path
2020-06-26 08:43:14 -04:00
nfs4proc.c
NFS: Zero-stateid SETATTR should first return delegation
2020-09-05 10:39:41 -04:00
nfs4renewd.c
NFSv4.0: nfs4_do_fsinfo() should not do implicit lease renewals
2020-02-04 12:27:55 -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
NFSv4: Use sequence counter with associated spinlock
2020-07-29 16:14:28 +02:00
nfs4super.c
NFSv4.2: add client side xattr caching.
2020-07-13 17:52:46 -04:00
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 tracing for layout errors
2020-01-15 10:54:33 -05:00
nfs4trace.h
NFS: Add layout segment info to pnfs read/write/commit tracepoints
2020-08-12 09:46:05 -04:00
nfs4xdr.c
fs: nfs: delete repeated words in comments
2020-08-12 09:46:22 -04:00
nfs42.h
NFSv4.2: add the extended attribute proc functions.
2020-07-13 17:52:45 -04:00
nfs42proc.c
NFS: Add tracepoints for layouterror and layoutstats.
2020-08-05 07:27:44 -04:00
nfs42xattr.c
NFSv4.2: xattr cache: get rid of cache discard work queue
2020-07-30 15:51:44 -04:00
nfs42xdr.c
NFSv4.2: add client side XDR handling for extended attributes
2020-07-13 17:52:45 -04:00
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
nfsroot: set tcp as the default transport protocol
2020-03-25 08:45:47 -04:00
nfstrace.c
NFS: Add trace events to report non-zero NFS status codes
2019-02-13 12:03:21 -05:00
nfstrace.h
nfs: define and use the NFS_INO_INVALID_XATTR flag
2020-07-13 17:52:45 -04:00
pagelist.c
NFS: Add a tracepoint in nfs_set_pgio_error()
2020-06-11 13:33:48 -04:00
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: Don't use RPC_TASK_CRED_NOREF with pnfs
2020-05-13 09:55:36 -04:00
pnfs.c
NFS: Fix flexfiles read failover
2020-08-12 11:20:29 -04:00
pnfs.h
NFS: Fix flexfiles read failover
2020-08-12 11:20:29 -04:00
proc.c
NFS: Add softreval behaviour to nfs_lookup_revalidate()
2020-01-24 16:51:13 -05:00
read.c
NFS: Trace short NFS READs
2020-06-11 13:33:48 -04:00
super.c
Merge tag 'fscache-fixes-20200508-2' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
2020-05-11 14:06:50 -04:00
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
fs: nfs: sysfs: Remove NULL check before kfree
2019-11-18 10:38:04 +01:00
sysfs.h
NFS: Use the correct style for SPDX License Identifier
2020-05-27 10:08:26 -04:00
unlink.c
NFS: Avoid referencing the cred twice in async rename/unlink
2020-03-16 08:34:29 -04:00
write.c
mm/writeback: discard NR_UNSTABLE_NFS, use NR_WRITEBACK instead
2020-06-02 10:59:08 -07:00