linux.git/fs/nfs/callback_proc.c, branch v5.7

NFSv4: Add support for CB_RECALL_ANY for flexfiles layouts

2020-03-16T12:34:30+00:00

When we receive a CB_RECALL_ANY that asks us to return flexfiles
layouts, we iterate through all the layouts and look at whether or
not there are active open file descriptors that might need them
for I/O. If there are no such descriptors, we return the layouts.

Signed-off-by: Trond Myklebust

NFSv4/pnfs: Clean up nfs_layout_find_inode()

2020-03-16T12:34:29+00:00

Now that we can rely on just the rcu_read_lock(), remove the
clp->cl_lock and clean up.

Signed-off-by: Trond Myklebust

NFSv4/pnfs: Return valid stateids in nfs_layout_find_inode_by_stateid()

2020-03-16T12:34:29+00:00

Make sure to test the stateid for validity so that we catch instances
where the server may have been reusing stateids in
nfs_layout_find_inode_by_stateid().

Fixes: 7b410d9ce460 ("pNFS: Delay getting the layout header in CB_LAYOUTRECALL handlers")
Signed-off-by: Trond Myklebust

NFSv4/pnfs: pnfs_set_layout_stateid() should update the layout cred

2020-03-16T12:34:28+00:00

If the cred assigned to the layout that we're updating differs from
the one used to retrieve the new layout segment, then we need to
update the layout plh_lc_cred field.

Signed-off-by: Trond Myklebust

NFSv4: nfs4_callback_getattr() should ignore revoked delegations

2019-11-04T02:28:45+00:00

If the delegation has been revoked, ignore it.

Signed-off-by: Trond Myklebust

NFSv4: NFSv4 callbacks also support 64-bit timestamps

2019-11-04T02:28:44+00:00

Convert the NFSv4 callbacks to use struct timestamp64, rather than
truncating times to 32-bit values.

Signed-off-by: Trond Myklebust

NFS4: Add a trace event to record invalid CB sequence IDs

2019-07-09T14:30:25+00:00

Help debug NFSv4 callback failures.

Signed-off-by: Chuck Lever 
Signed-off-by: Anna Schumaker

NFSv4.2 copy do not allocate memory under the lock

2018-11-22T18:54:46+00:00

Bruce pointed out that we shouldn't allocate memory while holding
a lock in the nfs4_callback_offload() and handle_async_copy()
that deal with a racing CB_OFFLOAD and reply to COPY case.

Signed-off-by: Olga Kornievskaia 
Signed-off-by: Trond Myklebust

NFSv4: Fix an Oops during delegation callbacks

2018-11-13T22:15:17+00:00

If the server sends a CB_GETATTR or a CB_RECALL while the filesystem is
being unmounted, then we can Oops when releasing the inode in
nfs4_callback_getattr() and nfs4_callback_recall().

Signed-off-by: Trond Myklebust

NFSv4: Fix a sleep in atomic context in nfs4_callback_sequence()

2018-08-15T16:05:15+00:00

We must drop the lock before we can sleep in referring_call_exists().

Reported-by: Jia-Ju Bai 
Fixes: 045d2a6d076a ("NFSv4.1: Delay callback processing...")
Cc: stable@vger.kernel.org # v4.9+
Signed-off-by: Trond Myklebust 
Signed-off-by: Anna Schumaker