linux.git/include/linux/nfs_xdr.h, branch v6.1

nfs: only issue commit in DIO codepath if we have uncommitted data

2022-07-23T19:28:59+00:00

Currently, we try to determine whether to issue a commit based on
nfs_write_need_commit which looks at the current verifier. In the case
where we got a short write and then tried to follow it up with one that
failed, the verifier can't be trusted.

What we really want to know is whether the pgio request had any
successful writes that came back as UNSTABLE. Add a new flag to the pgio
request, and use that to indicate that we've had a successful unstable
write. Only issue a commit if that flag is set.

Signed-off-by: Jeff Layton 
Signed-off-by: Trond Myklebust

NFSv4: Fix free of uninitialized nfs4_label on referral lookup.

2022-05-31T21:09:24+00:00

Send along the already-allocated fattr along with nfs4_fs_locations, and
drop the memcpy of fattr.  We end up growing two more allocations, but this
fixes up a crash as:

PID: 790    TASK: ffff88811b43c000  CPU: 0   COMMAND: "ls"
 #0 [ffffc90000857920] panic at ffffffff81b9bfde
 #1 [ffffc900008579c0] do_trap at ffffffff81023a9b
 #2 [ffffc90000857a10] do_error_trap at ffffffff81023b78
 #3 [ffffc90000857a58] exc_stack_segment at ffffffff81be1f45
 #4 [ffffc90000857a80] asm_exc_stack_segment at ffffffff81c009de
 #5 [ffffc90000857b08] nfs_lookup at ffffffffa0302322 [nfs]
 #6 [ffffc90000857b70] __lookup_slow at ffffffff813a4a5f
 #7 [ffffc90000857c60] walk_component at ffffffff813a86c4
 #8 [ffffc90000857cb8] path_lookupat at ffffffff813a9553
 #9 [ffffc90000857cf0] filename_lookup at ffffffff813ab86b

Suggested-by: Trond Myklebust 
Fixes: 9558a007dbc3 ("NFS: Remove the label from the nfs4_lookup_res struct")
Signed-off-by: Benjamin Coddington 
Signed-off-by: Anna Schumaker

NFSv4: Add encoders/decoders for the NFSv4.1 dacl and sacl attributes

2022-05-17T17:32:46+00:00

Add the ability to set or retrieve the acl using the NFSv4.1 'dacl' and
'sacl' attributes to the NFSv4 xdr encoders/decoders.

Signed-off-by: Trond Myklebust 
Signed-off-by: Anna Schumaker

NFSv4: Specify the type of ACL to cache

2022-05-17T17:32:46+00:00

When caching a NFSv4 ACL, we want to specify whether we are caching an
NFSv4.0 type acl, the NFSv4.1 dacl or the NFSv4.1 sacl.

Signed-off-by: Trond Myklebust 
Signed-off-by: Anna Schumaker

NFS: Ensure rpc_run_task() cannot fail in nfs_async_rename()

2022-04-07T20:20:00+00:00

Ensure the call to rpc_run_task() cannot fail by preallocating the
rpc_task.

Fixes: 910ad38697d9 ("NFS: Fix memory allocation in rpc_alloc_task()")
Signed-off-by: Trond Myklebust

NFSv4: keep state manager thread active if swap is enabled

2022-03-13T16:59:35+00:00

If we are swapping over NFSv4, we may not be able to allocate memory to
start the state-manager thread at the time when we need it.
So keep it always running when swap is enabled, and just signal it to
start.

This requires updating and testing the cl_swapper count on the root
rpc_clnt after following all ->cl_parent links.

Signed-off-by: NeilBrown 
Signed-off-by: Trond Myklebust

NFS: Optimise away the previous cookie field

2022-03-02T13:43:39+00:00

Replace the 'previous cookie' field in struct nfs_entry with the
array->last_cookie.

Signed-off-by: Trond Myklebust

NFSv4.1 query for fs_location attr on a new file system

2022-01-13T14:30:48+00:00

Query the server for other possible trunkable locations for a given
file system on a 4.1+ mount.

v2:
-- added missing static to nfs4_discover_trunking,
reported by the kernel test robot

Signed-off-by: Olga Kornievskaia 
Signed-off-by: Anna Schumaker

NFSv4: Add some support for case insensitive filesystems

2022-01-06T19:00:20+00:00

Add capabilities to allow the NFS client to recognise when it is dealing
with case insensitive and case preserving filesystems.

Signed-off-by: Trond Myklebust 
Signed-off-by: Anna Schumaker

NFS: pass cred explicitly for access tests

2022-01-06T19:00:20+00:00

Storing the 'struct cred *' in nfs_access_entry is problematic.
An active 'cred' can keep a 'struct key *' active, and a quota is
imposed on the number of such keys that a user can maintain.
Cached 'nfs_access_entry' structs have indefinite lifetime, and having
these keep 'struct key's alive imposes on that quota.

So a future patch will remove the ->cred ref from nfs_access_entry.

To prepare, change various functions to not assume there is a 'cred' in
the nfs_access_entry, but to pass the cred around explicitly.

Signed-off-by: NeilBrown 
Signed-off-by: Anna Schumaker