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linux/fs/nfs
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Trond Myklebust dcabad63e0 NFS: Avoid flushing data while holding directory locks in nfs_rename() 
[ Upstream commit dcd21b609d ]

The Linux client assumes that all filehandles are non-volatile for
renames within the same directory (otherwise sillyrename cannot work).
However, the existence of the Linux 'subtree_check' export option has
meant that nfs_rename() has always assumed it needs to flush writes
before attempting to rename.

Since NFSv4 does allow the client to query whether or not the server
exhibits this behaviour, and since knfsd does actually set the
appropriate flag when 'subtree_check' is enabled on an export, it
should be OK to optimise away the write flushing behaviour in the cases
where it is clearly not needed.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-06-04 14:40:26 +02:00
..
blocklayout pNFS: Fix the pnfs block driver's calculation of layoutget size 2024-01-25 15:27:23 -08:00
filelayout nfs: don't share pNFS DS connections between net namespaces 2025-06-04 14:40:25 +02:00
flexfilelayout nfs: don't share pNFS DS connections between net namespaces 2025-06-04 14:40:25 +02:00
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 nfsd: stop setting ->pg_stats for unused stats 2024-08-19 06:00:04 +02:00
callback.h NFSv4.1: Fix uninitialised variable in devicenotify 2022-01-06 14:00:20 -05:00
callback_proc.c pNFS: Avoid a live lock condition in pnfs_update_layout() 2022-06-06 11:53:55 -04:00
callback_xdr.c SUNRPC: Fix integer overflow in decode_rc_list() 2024-10-17 15:22:18 +02:00
client.c NFS: Avoid flushing data while holding directory locks in nfs_rename() 2025-06-04 14:40:26 +02:00
delegation.c NFSv4: Check for delegation validity in nfs_start_delegation_return_locked() 2025-06-04 14:40:02 +02:00
delegation.h NFSv4: Fix delegation return in cases where we have to retry 2021-06-13 19:36:27 -04:00
dir.c NFS: Avoid flushing data while holding directory locks in nfs_rename() 2025-06-04 14:40:26 +02:00
direct.c nfs: drop the incorrect assertion in nfs_swap_rw() 2024-07-05 09:31:52 +02:00
dns_resolve.c NFS: Avoid memcpy() run-time warning for struct sockaddr overflows 2022-10-27 15:52:10 -04:00
dns_resolve.h NFS: Avoid memcpy() run-time warning for struct sockaddr overflows 2022-10-27 15:52:10 -04:00
export.c nfsd: allow reaping files still under writeback 2024-03-26 18:20:23 -04:00
file.c NFS Client Updates for Linux 6.1 2022-10-13 09:58:42 -07:00
fs_context.c nfs: keep server info for remounts 2024-06-12 11:03:50 +02:00
fscache.c mm, netfs, fscache: stop read optimisation when folio removed from pagecache 2024-01-10 17:10:31 +01:00
fscache.h nfs: Convert to release_folio 2022-05-09 23:12:33 -04:00
getroot.c NFS: Remove the nfs4_label argument from nfs_setsecurity 2021-11-05 14:54:40 -04:00
inode.c NFS: Don't allow waiting for exiting tasks 2025-06-04 14:40:02 +02:00
internal.h NFS: Don't allow waiting for exiting tasks 2025-06-04 14:40:02 +02:00
io.c NFS: Fix up incorrect documentation 2021-04-05 09:04:20 -04:00
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: add missing selections of CONFIG_CRC32 2025-04-25 10:43:52 +02:00
Makefile nfs: Convert to new fscache volume/cookie API 2022-01-10 11:53:25 +00:00
mount_clnt.c NFS: Avoid memcpy() run-time warning for struct sockaddr overflows 2022-10-27 15:52:10 -04:00
namespace.c NFS: Fix an Oops in nfs_d_automount() 2022-12-31 13:32:18 +01:00
netns.h nfs: make the rpc_stat per net namespace 2024-05-17 11:55:54 +02:00
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 treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
nfs2xdr.c NFS: Guard against READDIR loop when entry names exceed MAXNAMELEN 2023-09-13 09:42:49 +02:00
nfs3_fs.h vfs: add rcu argument to ->get_acl() callback 2021-08-18 22:08:24 +02:00
nfs3acl.c vfs: add rcu argument to ->get_acl() callback 2021-08-18 22:08:24 +02:00
nfs3client.c NFS: Avoid memcpy() run-time warning for struct sockaddr overflows 2022-10-27 15:52:10 -04:00
nfs3proc.c NFS: Don't allow waiting for exiting tasks 2025-06-04 14:40:02 +02:00
nfs3super.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
nfs3xdr.c NFS: Guard against READDIR loop when entry names exceed MAXNAMELEN 2023-09-13 09:42:49 +02:00
nfs4_fs.h NFS: Avoid memcpy() run-time warning for struct sockaddr overflows 2022-10-27 15:52:10 -04:00
nfs4client.c NFSv4.1 another fix for EXCHGID4_FLAG_USE_PNFS_DS for DS server 2024-08-03 08:49:16 +02:00
nfs4file.c NFSv4.2 fix problems with __nfs42_ssc_open 2022-08-19 20:31:57 -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 nfs: remove unnecessary (void*) conversions. 2022-10-03 11:26:36 -04:00
nfs4idmap.h NFS: Move nfs_idmap.h into fs/nfs/ 2015-04-23 15:16:14 -04:00
nfs4namespace.c NFS: Avoid memcpy() run-time warning for struct sockaddr overflows 2022-10-27 15:52:10 -04:00
nfs4proc.c NFS: Don't allow waiting for exiting tasks 2025-06-04 14:40:02 +02:00
nfs4renewd.c treewide: remove editor modelines and cruft 2021-05-07 00:26:34 -07:00
nfs4session.c NFSv4: Sanity check the parameters in nfs41_update_target_slotid() 2021-11-07 09:23:14 -05:00
nfs4session.h nfs: add missing selections of CONFIG_CRC32 2025-04-25 10:43:52 +02:00
nfs4state.c NFSv4: Treat ENETUNREACH errors as fatal for state recovery 2025-06-04 14:40:03 +02:00
nfs4super.c NFS: Adjust fs_context error logging 2021-01-10 13:32:39 -05:00
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 trace: Relocate event helper files 2024-03-06 14:45:17 +00:00
nfs4xdr.c NFSv4.2: Fix a memory stomp in decode_attr_security_label 2022-12-31 13:32:18 +01:00
nfs42.h NFSv4.2: fix listxattr maximum XDR buffer size 2024-03-26 18:20:56 -04:00
nfs42proc.c NFSv4.2: mark OFFLOAD_CANCEL MOVEABLE 2025-02-21 13:49:20 +01:00
nfs42xattr.c NFSv4.2: fix wrong shrinker_id 2023-07-19 16:21:43 +02:00
nfs42xdr.c NFSv4.2: fix COPY_NOTIFY xdr buf size calculation 2025-02-21 13:49:20 +01:00
nfsroot.c NFS: Fix an off by one in root_nfs_cat() 2024-03-26 18:20:56 -04:00
nfstrace.c NFSv4: Catch and trace server filehandle encoding errors 2021-04-14 09:36:29 -04:00
nfstrace.h trace: Relocate event helper files 2024-03-06 14:45:17 +00:00
pagelist.c NFSv4.1 mark qualified async operations as MOVEABLE tasks 2022-05-31 17:09:30 -04:00
pnfs.c NFSv4/pnfs: Reset the layout state after a layoutreturn 2025-05-22 14:10:03 +02:00
pnfs.h nfs: don't share pNFS DS connections between net namespaces 2025-06-04 14:40:25 +02:00
pnfs_dev.c NFSv4/pnfs: minor fix for cleanup path in nfs4_get_device_info 2023-09-19 12:27:58 +02:00
pnfs_nfs.c nfs: don't share pNFS DS connections between net namespaces 2025-06-04 14:40:25 +02:00
proc.c NFS: NFSv2/v3 clients should never be setting NFS_CAP_XATTR 2022-02-25 18:50:13 -05:00
read.c NFSv4.2: Rework scratch handling for READ_PLUS (again) 2023-09-13 09:43:05 +02:00
super.c NFSv3: only use NFS timeout for MOUNT when protocols are compatible 2024-11-14 13:15:10 +01:00
symlink.c nfs: propagate readlink errors in nfs_symlink_filler 2024-07-25 09:49:11 +02:00
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: rename nfs_client_kset to nfs_kset 2023-10-10 22:00:35 +02:00
sysfs.h NFSv4: Fix up RCU annotations for struct nfs_netns_client 2020-10-15 13:31:08 -04:00
unlink.c NFSv4.1 mark qualified async operations as MOVEABLE tasks 2022-05-31 17:09:30 -04:00
write.c nfs: fix UAF in direct writes 2024-04-03 15:19:34 +02:00