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dea1bb35c5
linux/fs/nfs
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Trond Myklebust dea1bb35c5 NFS: Fix regression whereby fscache errors are appearing on 'nofsc' mounts 
People are reporing seeing fscache errors being reported concerning
duplicate cookies even in cases where they are not setting up fscache
at all. The rule needs to be that if fscache is not enabled, then it
should have no side effects at all.

To ensure this is the case, we disable fscache completely on all superblocks
for which the 'fsc' mount option was not set. In order to avoid issues
with '-oremount', we also disable the ability to turn fscache on via
remount.

Fixes: f1fe29b4a0 ("NFS: Use i_writecount to control whether...")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=200145
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: Steve Dickson <steved@redhat.com>
Cc: David Howells <dhowells@redhat.com>
2019-08-04 22:35:41 -04:00
..
blocklayout treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
filelayout treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
flexfilelayout pnfs/flexfiles: Add tracepoints for detecting pnfs fallback to MDS 2019-07-18 15:50:28 -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 NFS4: Add a trace event to record invalid CB sequence IDs 2019-07-09 10:30:25 -04:00
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: Cleanup if nfs_match_client is interrupted 2019-07-06 14:54:53 -04:00
delegation.c NFSv4.1: Only reap expired delegations 2019-08-04 22:35:40 -04:00
delegation.h NFSv4: Fix delegation state recovery 2019-08-04 22:35:40 -04:00
dir.c Revert "NFS: readdirplus optimization by cache mechanism" (memleak) 2019-07-12 16:01:37 -04:00
direct.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +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
export.c NFS: Pass the inode down to the getattr() callback 2018-06-04 12:07:07 -04:00
file.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
fscache-index.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
fscache.c NFS: Fix regression whereby fscache errors are appearing on 'nofsc' mounts 2019-08-04 22:35:41 -04:00
fscache.h NFS: Fix regression whereby fscache errors are appearing on 'nofsc' mounts 2019-08-04 22:35:41 -04:00
getroot.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
inode.c Merge branch 'containers' 2019-07-06 14:54:52 -04:00
internal.h Revert "NFS: readdirplus optimization by cache mechanism" (memleak) 2019-07-12 16:01:37 -04:00
io.c NFS: Fix up documentation warnings 2019-02-20 15:14:21 -05:00
iostat.h
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile NFS: Create a root NFS directory in /sys/fs/nfs 2019-07-06 14:54:49 -04:00
mount_clnt.c SUNRPC: Cache cred of process creating the rpc_client 2019-04-26 16:00:48 -04:00
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 NFS: Record task, client ID, and XID in xdr_status trace points 2019-07-09 10:30:25 -04:00
nfs3_fs.h
nfs3acl.c nfs: fix xfstest generic/099 failed on nfsv3 2019-02-20 17:33:55 -05:00
nfs3client.c pNFS: Allow multiple connections to the DS 2019-07-06 14:54:50 -04:00
nfs3proc.c NFS/NFSD/SUNRPC: replace generic creds with 'struct cred'. 2018-12-19 13:52:46 -05:00
nfs3super.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
nfs3xdr.c NFS: Record task, client ID, and XID in xdr_status trace points 2019-07-09 10:30:25 -04:00
nfs4_fs.h NFSv4: Fix a potential sleep while atomic in nfs4_do_reclaim() 2019-08-04 22:35:40 -04:00
nfs4client.c NFSv4: Fix a potential sleep while atomic in nfs4_do_reclaim() 2019-08-04 22:35:40 -04:00
nfs4file.c NFS client updates for Linux 5.3 2019-07-18 14:32:33 -07:00
nfs4getroot.c
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 NFSv4: Fix an Oops in nfs4_do_setattr 2019-08-04 22:35:41 -04:00
nfs4renewd.c NFS/NFSD/SUNRPC: replace generic creds with 'struct cred'. 2018-12-19 13:52:46 -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: Fix a potential sleep while atomic in nfs4_do_reclaim() 2019-08-04 22:35:40 -04:00
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 pnfs/flexfiles: Add tracepoints for detecting pnfs fallback to MDS 2019-07-18 15:50:28 -04:00
nfs4xdr.c nfs4: Make nfs4_proc_get_lease_time available for nfs4.0 2019-07-13 11:48:41 -04:00
nfs42.h NFSv4.2: Add client support for the generic 'layouterror' RPC call 2019-03-01 16:20:16 -05:00
nfs42proc.c NFSv4.1 fix incorrect return value in copy_file_range 2019-04-11 15:23:48 -04:00
nfs42xdr.c NFSv4.2: Add client support for the generic 'layouterror' RPC call 2019-03-01 16:20:16 -05:00
nfs.h
nfsroot.c
nfstrace.c NFS: Add trace events to report non-zero NFS status codes 2019-02-13 12:03:21 -05:00
nfstrace.h NFS: Record task, client ID, and XID in xdr_status trace points 2019-07-09 10:30:25 -04:00
pagelist.c NFS: Clean up writeback code 2019-07-06 14:54:52 -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 treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
pnfs.c NFSv4: Report the error from nfs4_select_rw_stateid() 2019-08-04 22:35:40 -04:00
pnfs.h NFS: Add a helper to return a pointer to the open context of a struct nfs_page 2019-04-25 14:18:15 -04:00
proc.c NFS/NFSD/SUNRPC: replace generic creds with 'struct cred'. 2018-12-19 13:52:46 -05:00
read.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
super.c NFS: Fix regression whereby fscache errors are appearing on 'nofsc' mounts 2019-08-04 22:35:41 -04:00
symlink.c nfs: pass the correct prototype to read_cache_page 2019-05-09 16:26:57 -04:00
sysctl.c
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: Clean up writeback code 2019-07-06 14:54:52 -04:00