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linux/fs/nfsd
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J. Bruce Fields ae3c57b5ca nfsd: Cache R, RW, and W opens separately 
The nfsd open code has always kept separate read-only, read-write, and
write-only opens as necessary to ensure that when a client closes or
downgrades, we don't retain more access than necessary.

Also, I didn't realize the cache behaved this way when I wrote
94415b06eb8a "nfsd4: a client's own opens needn't prevent delegations".
There I assumed fi_fds[O_WRONLY] and fi_fds[O_RDWR] would always be
distinct.  The violation of that assumption is triggering a
WARN_ON_ONCE() and could also cause the server to give out a delegation
when it shouldn't.

Fixes: 94415b06eb8a ("nfsd4: a client's own opens needn't prevent delegations")
Tested-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2020-09-25 18:02:02 -04:00
..
acl.h
nfsd: eliminate an unnecessary acl size limit
2019-08-28 21:13:45 -04:00
auth.c
nfsd: auth: Fix gid sorting when rootsquash enabled
2018-01-22 20:13:07 -08:00
auth.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
blocklayout.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
blocklayoutxdr.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
blocklayoutxdr.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cache.h
nfsd4: make drc_slab global, not per-net
2020-06-01 17:44:45 -04:00
current_stateid.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
nfsd: export upcalls must not return ESTALE when mountd is down
2020-03-16 12:04:33 -04:00
export.h
knfsd: Allow lockless lookups of the exports
2018-10-29 16:58:04 -04:00
fault_inject.c
nfsd: no need to check return value of debugfs_create functions
2019-07-03 16:57:17 +02:00
filecache.c
nfsd: Cache R, RW, and W opens separately
2020-09-25 18:02:02 -04:00
filecache.h
nfsd: convert file cache to use over/underflow safe refcount
2020-02-06 11:22:55 -05:00
flexfilelayout.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
flexfilelayoutxdr.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
flexfilelayoutxdr.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
idmap.h
nfsd: Remove duplicate define of IDMAP_NAMESZ/IDMAP_TYPE_xx
2015-07-20 14:58:46 -04:00
Kconfig
nfsd: remove fault injection code
2020-09-25 18:01:26 -04:00
lockd.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
Makefile
nfsd: remove fault injection code
2020-09-25 18:01:26 -04:00
netns.h
nfsd: netns.h: delete a duplicated word
2020-07-24 17:25:13 -04:00
nfs2acl.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nfs3acl.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nfs3proc.c
nfsd: Ensure sampling of the write verifier is atomic with the write
2020-01-22 16:25:41 -05:00
nfs3xdr.c
nfsd: Ensure sampling of the write verifier is atomic with the write
2020-01-22 16:25:41 -05:00
nfs4acl.c
nfsd: check permissions when setting ACLs
2016-06-24 12:11:52 -04:00
nfs4callback.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
nfs4idmap.c
nfsd: Use seq_putc() in two functions
2020-07-13 17:28:46 -04:00
nfs4layouts.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
nfs4proc.c
nfsd: fix comparison to bool warning
2020-09-25 18:01:28 -04:00
nfs4recover.c
nfsd: avoid a NULL dereference in __cld_pipe_upcall()
2020-07-13 17:28:46 -04:00
nfs4state.c
nfsd: rename delegation related tracepoints to make them less confusing
2020-09-25 18:01:27 -04:00
nfs4xdr.c
NFSD: Correct type annotations in COPY XDR functions
2020-09-25 18:01:28 -04:00
nfscache.c
silence nfscache allocation warnings with kvzalloc
2020-09-25 18:01:28 -04:00
nfsctl.c
nfsd: remove fault injection code
2020-09-25 18:01:26 -04:00
nfsd.h
nfsd: add defines for NFSv4.2 extended attribute support
2020-07-13 17:27:03 -04:00
nfsfh.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
nfsfh.h
nfsd: handle nfs3 timestamps as unsigned
2019-12-19 17:46:08 -05:00
nfsproc.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
nfssvc.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
nfsxdr.c
nfsd: knfsd must use the container user namespace
2019-04-24 09:46:35 -04:00
pnfs.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
state.h
nfsd: remove fault injection code
2020-09-25 18:01:26 -04:00
stats.c
proc: convert everything to "struct proc_ops"
2020-02-04 03:05:26 +00:00
stats.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
trace.c
nfsd: move include of state.h from trace.c to trace.h
2015-10-23 15:57:29 -04:00
trace.h
nfsd: rename delegation related tracepoints to make them less confusing
2020-09-25 18:01:27 -04:00
vfs.c
NFSD: Correct type annotations in user xattr helpers
2020-09-25 18:01:27 -04:00
vfs.h
nfsd: define xattr functions to call into their vfs counterparts
2020-07-13 17:27:03 -04:00
xdr3.h
nfsd: Ensure sampling of the write verifier is atomic with the write
2020-01-22 16:25:41 -05:00
xdr4.h
nfsd: add structure definitions for xattr requests / responses
2020-07-13 17:27:03 -04:00
xdr4cb.h
NFSD CB_OFFLOAD xdr
2018-09-25 20:34:54 -04:00
xdr.h
NFSD: Clean up legacy NFS SYMLINK argument XDR decoders
2018-04-03 15:08:16 -04:00