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kernel_a52xq/fs/nfs
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Filename Latest commit message Latest commit date
Chuck Lever a6a2cf4d91 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 12:10:58 +02:00
..
blocklayout NFS: Mark expected switch fall-throughs 2018-08-08 16:50:02 -04:00
filelayout PNFS fallback to MDS if no deviceid found 2019-05-25 18:23:28 +02:00
flexfilelayout pNFS/flexfiles: Fix list corruption if the mirror count changes 2020-06-30 23:17:18 -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.c NFS client updates for Linux 4.15 2017-11-17 14:18:00 -08:00
callback.h NFS CB_OFFLOAD xdr 2018-08-09 12:56:38 -04:00
callback_proc.c NFSv4/pnfs: Return valid stateids in nfs_layout_find_inode_by_stateid() 2020-04-23 10:30:18 +02:00
callback_xdr.c NFS CB_OFFLOAD xdr 2018-08-09 12:56:38 -04:00
client.c nfs: add minor version to nfs_server_key for fscache 2020-04-02 15:28:14 +02:00
delegation.c NFS: Fix a soft lockup in the delegation recovery code 2020-01-27 14:50:27 +01:00
delegation.h NFS: Fix a soft lockup in the delegation recovery code 2020-01-27 14:50:27 +01:00
dir.c NFS: Directory page cache pages need to be locked when read 2020-02-11 04:34:06 -08:00
direct.c SUNRPC reverting d03727b248d0 ("NFSv4 fix CLOSE not waiting for direct IO compeletion") 2020-07-29 10:16:46 +02:00
dns_resolve.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +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 SUNRPC reverting d03727b248d0 ("NFSv4 fix CLOSE not waiting for direct IO compeletion") 2020-07-29 10:16:46 +02:00
fscache-index.c nfs: fscache: use timespec64 in inode auxdata 2020-05-20 08:18:43 +02:00
fscache.c NFSv4: Fix fscache cookie aux_data to ensure change_attr is included 2020-05-20 08:18:43 +02:00
fscache.h nfs: fscache: use timespec64 in inode auxdata 2020-05-20 08:18:43 +02:00
getroot.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
inode.c NFSv4: Handle the special Linux file open access mode 2019-07-26 09:14:22 +02:00
internal.h Rename superblock flags (MS_xyz -> SB_xyz) 2017-11-27 13:05:09 -08:00
io.c NFS: Fix a race between mmap() and O_DIRECT 2018-01-28 22:00:15 -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 16:33:23 -05:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mount_clnt.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
namespace.c NFS: Use ERR_CAST() to avoid cross-structure cast 2017-05-28 10:11:47 -07:00
netns.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs2super.c
nfs2xdr.c NFSv2: Fix a typo in encode_sattr() 2020-01-17 19:47:04 +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 08:13:32 +02:00
nfs3client.c NFS: Remove unused authflavour parameter from nfs_get_client() 2016-12-01 17:46:32 -05:00
nfs3proc.c NFS: Pass the inode down to the getattr() callback 2018-06-04 12:07:07 -04:00
nfs3super.c
nfs3xdr.c NFS/pnfs: Fix pnfs_generic_prepare_to_resend_writes() 2020-02-14 16:33:24 -05:00
nfs4_fs.h NFSv4: Fix a potential sleep while atomic in nfs4_do_reclaim() 2019-08-29 08:28:38 +02:00
nfs4client.c nfs: add minor version to nfs_server_key for fscache 2020-04-02 15:28:14 +02:00
nfs4file.c NFSv4: Fix return values for nfs4_file_open() 2019-09-21 07:16:55 +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 keys: Fix dependency loop between construction record and auth key 2019-03-23 20:09:48 +01:00
nfs4idmap.h
nfs4namespace.c nfs: Referrals should use the same proto setting as their parent 2018-01-14 23:06:30 -05:00
nfs4proc.c NFS: Zero-stateid SETATTR should first return delegation 2020-09-23 12:10:58 +02:00
nfs4renewd.c NFSv4: Set the connection timeout to match the lease period 2017-02-09 14:15:16 -05:00
nfs4session.c NFSv4.1: Fix regression in callback retry handling 2016-12-01 17:21:38 -05:00
nfs4session.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs4state.c NFSv4: Ensure that the state manager exits the loop on SIGKILL 2019-11-06 13:05:29 +01:00
nfs4super.c
nfs4sysctl.c nfs: Do not convert nfs_idmap_cache_timeout to jiffies 2018-01-18 15:10:47 -05:00
nfs4trace.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs4trace.h NFSv4: Fix a tracepoint Oops in initiate_file_draining() 2018-09-14 16:24:08 -04:00
nfs4xdr.c nfs: Fix getxattr kernel panic and memory overflow 2020-08-21 11:05:38 +02:00
nfs42.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs42proc.c NFS: Fix memory leaks 2020-02-24 08:34:53 +01:00
nfs42xdr.c NFS: Add missing encode / decode sequence_maxsz to v4.2 operations 2020-01-27 14:50:29 +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 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfstrace.h NFS client updates for Linux 4.16 2018-01-30 19:03:48 -08:00
pagelist.c NFS: Fix memory leaks in nfs_pageio_stop_mirroring() 2020-04-23 10:30:21 +02:00
pnfs.c NFS: Don't return layout segments that are in use 2020-08-19 08:15:06 +02:00
pnfs.h NFS/pnfs: Bulk destroy of layouts needs to be safe w.r.t. umount 2020-01-27 14:50:27 +01:00
pnfs_dev.c pnfs/blocklayout: handle transient devices 2018-01-14 23:06:29 -05:00
pnfs_nfs.c NFS/pnfs: Fix pnfs_generic_prepare_to_resend_writes() 2020-02-14 16:33:24 -05:00
proc.c NFSv2: Fix write regression 2019-09-21 07:17:02 +02:00
read.c NFS: Pass error information to the pgio error cleanup routine 2019-09-06 10:22:23 +02:00
super.c fs/nfs: Fix nfs_parse_devname to not modify it's argument 2020-01-27 14:50:26 +01:00
symlink.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sysctl.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
unlink.c NFS: Fix up sillyrename() 2018-05-31 15:02:16 -04:00
write.c NFS: Fix a page leak in nfs_destroy_unlinked_subrequests() 2020-04-17 10:48:51 +02:00