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remarkable-linux/fs/nfs
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Trond Myklebust 793b7fe558 pNFS: Fix CB_LAYOUTRECALL stateid verification 
We want to evaluate in this order:

If the client holds no layout for this inode, then return
NFS4ERR_NOMATCHING_LAYOUT; it probably forgot the layout.

If the client finds the inode among the list of layouts, but the corresponding
stateid has not yet been initialised, then return NFS4ERR_DELAY to ask the
server to retry once the outstanding LAYOUTGET is complete.

If the current layout stateid's "other" field does not match the recalled
stateid, return NFS4ERR_BAD_STATEID.

If already processing a layout recall with a newer stateid, return
NFS4ERR_OLD_STATEID. This can only happens for servers that are
non-compliant with the NFSv4.1 protocol.

If already processing a layout recall with an older stateid, return
NFS4ERR_DELAY to ask the server to retry once the outstanding
LAYOUTRETURN is complete. Again, this is technically incompliant with
the NFSv4.1 protocol.

If the current layout sequence id is newer than the recalled stateid's
sequence id, return NFS4ERR_OLD_STATEID. This too implies protocol
non-compliance.

If the current layout sequence id is older than the recalled stateid's
sequence id+1, return NFS4ERR_DELAY.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2016-07-24 16:16:38 -04:00
..
blocklayout Fix NULL pointer dereference in bl_free_device(). 2016-07-22 15:14:21 -04:00
filelayout pnfs: pnfs_update_layout needs to consider if strict iomode checking is on 2016-05-26 08:40:56 -04:00
flexfilelayout pnfs: pnfs_update_layout needs to consider if strict iomode checking is on 2016-05-26 08:40:56 -04:00
objlayout mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
cache_lib.c
cache_lib.h
callback.c NFS: Enable client side NFSv4.1 backchannel to use other transports 2015-11-02 16:29:13 -05:00
callback.h NFSv4.x: Allow multiple callbacks in flight 2016-01-25 09:36:21 -05:00
callback_proc.c pNFS: Fix CB_LAYOUTRECALL stateid verification 2016-07-24 16:16:38 -04:00
callback_xdr.c NFSv4: Label stateids with the type 2016-05-17 15:48:06 -04:00
client.c mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
delegation.c NFSv4: Use the right stateid for delegations in setattr, read and write 2016-05-17 15:48:07 -04:00
delegation.h NFSv4: Use the right stateid for delegations in setattr, read and write 2016-05-17 15:48:07 -04:00
dir.c make nfs_atomic_open() call d_drop() on all ->open_context() errors. 2016-06-27 08:59:08 -04:00
direct.c NFS: Fix up O_DIRECT results 2016-06-24 12:01:00 -04:00
dns_resolve.c
dns_resolve.h
file.c direct-io: eliminate the offset argument to ->direct_IO 2016-05-01 19:58:39 -04:00
fscache-index.c
fscache.c
fscache.h
getroot.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
inode.c NFS: Fix potential race in nfs_fhget() 2016-06-24 12:01:00 -04:00
internal.h NFS: Add nfs_commit_file() 2016-05-17 15:47:55 -04:00
iostat.h
Kconfig kernel: conditionally support non-root users, groups and capabilities 2015-04-15 16:35:22 -07:00
Makefile NFS: Rename idmap.c to nfs4idmap.c 2015-04-23 15:16:14 -04:00
mount_clnt.c NFS: Remove unneeded NFS_DEBUG checking before define NFSDBG_FACILITY 2015-10-21 15:49:23 -05:00
namespace.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
netns.h
nfs.h
nfs2super.c
nfs2xdr.c
nfs3_fs.h
nfs3acl.c posix_acl: Inode acl caching fixes 2016-03-31 00:30:15 -04:00
nfs3client.c
nfs3proc.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
nfs3super.c
nfs3xdr.c xprtrdma: Fix large NFS SYMLINK calls 2015-08-05 16:21:28 -04:00
nfs4_fs.h NFSv4: Use the right stateid for delegations in setattr, read and write 2016-05-17 15:48:07 -04:00
nfs4client.c nfs4: start callback_ident at idr 1 2015-11-23 21:59:42 -05:00
nfs4file.c NFS: Add COPY nfs operation 2016-05-17 15:47:55 -04:00
nfs4getroot.c nfs: Remove invalid NFS_ATTR_FATTR_V4_REFERRAL checking in nfs4_get_rootfh 2015-07-01 11:31:22 -04:00
nfs4idmap.c KEYS: Add a facility to restrict new links into a keyring 2016-04-11 22:37:37 +01:00
nfs4idmap.h NFS: Move nfs_idmap.h into fs/nfs/ 2015-04-23 15:16:14 -04:00
nfs4namespace.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
nfs4proc.c pNFS: LAYOUTRETURN should only update the stateid if the layout is valid 2016-07-24 12:51:49 -04:00
nfs4renewd.c
nfs4session.c NFSv4.x: Allow multiple callbacks in flight 2016-01-25 09:36:21 -05:00
nfs4session.h NFSv4.x: Allow multiple callbacks in flight 2016-01-25 09:36:21 -05:00
nfs4state.c nfs4: Fix potential use after free of state in nfs4_do_reclaim. 2016-06-24 12:01:00 -04:00
nfs4super.c NFS: Move nfs_idmap.h into fs/nfs/ 2015-04-23 15:16:14 -04:00
nfs4sysctl.c nfs: do not initialise statics to 0 2015-12-28 09:57:15 -05:00
nfs4trace.c pNFS: Modify pnfs_update_layout tracepoints to use layout stateid 2015-12-28 09:57:14 -05:00
nfs4trace.h pnfs: rework LAYOUTGET retry handling 2016-05-17 15:48:12 -04:00
nfs4xdr.c NFSv4: Label stateids with the type 2016-05-17 15:48:06 -04:00
nfs42.h NFS: Add COPY nfs operation 2016-05-17 15:47:55 -04:00
nfs42proc.c NFS client updates for Linux 4.7 2016-05-26 10:33:33 -07:00
nfs42xdr.c NFS: Add COPY nfs operation 2016-05-17 15:47:55 -04:00
nfsroot.c nfsroot: make nfsroot to accept the 1024 bytes long directory name 2015-10-21 15:49:19 -05:00
nfstrace.c NFSv4: Allow tracing of NFSv4 fsync calls 2015-03-27 12:39:34 -04:00
nfstrace.h nfs: per-name sillyunlink exclusion 2016-05-09 11:39:45 -04:00
pagelist.c NFS: Add nfs_commit_file() 2016-05-17 15:47:55 -04:00
pnfs.c pNFS: Always update the layout barrier seqid on LAYOUTGET 2016-07-24 16:16:38 -04:00
pnfs.h pNFS: LAYOUTRETURN should only update the stateid if the layout is valid 2016-07-24 12:51:49 -04:00
pnfs_dev.c NFSv4.1: Don't cache deviceids that have no notifications 2015-03-27 12:32:24 -04:00
pnfs_nfs.c pnfs_nfs: fix _cancel_empty_pagelist 2016-06-24 12:01:00 -04:00
proc.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
read.c NFS: Fix a double page unlock 2016-06-24 12:01:00 -04:00
super.c xprtrdma: Add rdma6 option to support NFS/RDMA IPv6 2016-05-17 15:47:56 -04:00
symlink.c switch ->get_link() to delayed_call, kill ->put_link() 2015-12-30 13:01:03 -05:00
sysctl.c
unlink.c nfs: per-name sillyunlink exclusion 2016-05-09 11:39:45 -04:00
write.c nfs: avoid race that crashes nfs_init_commit 2016-05-25 12:59:01 -04:00