Commit Graph

3232 Commits

Author SHA1 Message Date
Linus Torvalds
a022f7d575 block-5.14-2021-07-08
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Merge tag 'block-5.14-2021-07-08' of git://git.kernel.dk/linux-block

Pull more block updates from Jens Axboe:
 "A combination of changes that ended up depending on both the driver
  and core branch (and/or the IDE removal), and a few late arriving
  fixes. In detail:

   - Fix io ticks wrap-around issue (Chunguang)

   - nvme-tcp sock locking fix (Maurizio)

   - s390-dasd fixes (Kees, Christoph)

   - blk_execute_rq polling support (Keith)

   - blk-cgroup RCU iteration fix (Yu)

   - nbd backend ID addition (Prasanna)

   - Partition deletion fix (Yufen)

   - Use blk_mq_alloc_disk for mmc, mtip32xx, ubd (Christoph)

   - Removal of now dead block request types due to IDE removal
     (Christoph)

   - Loop probing and control device cleanups (Christoph)

   - Device uevent fix (Christoph)

   - Misc cleanups/fixes (Tetsuo, Christoph)"

* tag 'block-5.14-2021-07-08' of git://git.kernel.dk/linux-block: (34 commits)
  blk-cgroup: prevent rcu_sched detected stalls warnings while iterating blkgs
  block: fix the problem of io_ticks becoming smaller
  nvme-tcp: can't set sk_user_data without write_lock
  loop: remove unused variable in loop_set_status()
  block: remove the bdgrab in blk_drop_partitions
  block: grab a device refcount in disk_uevent
  s390/dasd: Avoid field over-reading memcpy()
  dasd: unexport dasd_set_target_state
  block: check disk exist before trying to add partition
  ubd: remove dead code in ubd_setup_common
  nvme: use return value from blk_execute_rq()
  block: return errors from blk_execute_rq()
  nvme: use blk_execute_rq() for passthrough commands
  block: support polling through blk_execute_rq
  block: remove REQ_OP_SCSI_{IN,OUT}
  block: mark blk_mq_init_queue_data static
  loop: rewrite loop_exit using idr_for_each_entry
  loop: split loop_lookup
  loop: don't allow deleting an unspecified loop device
  loop: move loop_ctl_mutex locking into loop_add
  ...
2021-07-09 12:05:33 -07:00
Linus Torvalds
0cc2ea8ceb Some highlights:
- add tracepoints for callbacks and for client creation and
 	  destruction
 	- cache the mounts used for server-to-server copies
 	- expose callback information in /proc/fs/nfsd/clients/*/info
 	- don't hold locks unnecessarily while waiting for commits
 	- update NLM to use xdr_stream, as we have for NFSv2/v3/v4
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Merge tag 'nfsd-5.14' of git://linux-nfs.org/~bfields/linux

Pull nfsd updates from Bruce Fields:

 - add tracepoints for callbacks and for client creation and destruction

 - cache the mounts used for server-to-server copies

 - expose callback information in /proc/fs/nfsd/clients/*/info

 - don't hold locks unnecessarily while waiting for commits

 - update NLM to use xdr_stream, as we have for NFSv2/v3/v4

* tag 'nfsd-5.14' of git://linux-nfs.org/~bfields/linux: (69 commits)
  nfsd: fix NULL dereference in nfs3svc_encode_getaclres
  NFSD: Prevent a possible oops in the nfs_dirent() tracepoint
  nfsd: remove redundant assignment to pointer 'this'
  nfsd: Reduce contention for the nfsd_file nf_rwsem
  lockd: Update the NLMv4 SHARE results encoder to use struct xdr_stream
  lockd: Update the NLMv4 nlm_res results encoder to use struct xdr_stream
  lockd: Update the NLMv4 TEST results encoder to use struct xdr_stream
  lockd: Update the NLMv4 void results encoder to use struct xdr_stream
  lockd: Update the NLMv4 FREE_ALL arguments decoder to use struct xdr_stream
  lockd: Update the NLMv4 SHARE arguments decoder to use struct xdr_stream
  lockd: Update the NLMv4 SM_NOTIFY arguments decoder to use struct xdr_stream
  lockd: Update the NLMv4 nlm_res arguments decoder to use struct xdr_stream
  lockd: Update the NLMv4 UNLOCK arguments decoder to use struct xdr_stream
  lockd: Update the NLMv4 CANCEL arguments decoder to use struct xdr_stream
  lockd: Update the NLMv4 LOCK arguments decoder to use struct xdr_stream
  lockd: Update the NLMv4 TEST arguments decoder to use struct xdr_stream
  lockd: Update the NLMv4 void arguments decoder to use struct xdr_stream
  lockd: Update the NLMv1 SHARE results encoder to use struct xdr_stream
  lockd: Update the NLMv1 nlm_res results encoder to use struct xdr_stream
  lockd: Update the NLMv1 TEST results encoder to use struct xdr_stream
  ...
2021-07-07 12:50:08 -07:00
J. Bruce Fields
ab1016d39c nfsd: fix NULL dereference in nfs3svc_encode_getaclres
In error cases the dentry may be NULL.

Before 20798dfe24, the encoder also checked dentry and
d_really_is_positive(dentry), but that looks like overkill to me--zero
status should be enough to guarantee a positive dentry.

This isn't the first time we've seen an error-case NULL dereference
hidden in the initialization of a local variable in an xdr encoder.  But
I went back through the other recent rewrites and didn't spot any
similar bugs.

Reported-by: JianHong Yin <jiyin@redhat.com>
Reviewed-by: Chuck Lever III <chuck.lever@oracle.com>
Fixes: 20798dfe24 ("NFSD: Update the NFSv3 GETACL result encoder...")
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-07-06 20:14:44 -04:00
Chuck Lever
7b08cf62b1 NFSD: Prevent a possible oops in the nfs_dirent() tracepoint
The double copy of the string is a mistake, plus __assign_str()
uses strlen(), which is wrong to do on a string that isn't
guaranteed to be NUL-terminated.

Fixes: 6019ce0742 ("NFSD: Add a tracepoint to record directory entry encoding")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-07-06 20:14:44 -04:00
Colin Ian King
e34c0ce913 nfsd: remove redundant assignment to pointer 'this'
The pointer 'this' is being initialized with a value that is never read
and it is being updated later with a new value. The initialization is
redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-07-06 20:14:44 -04:00
Trond Myklebust
474bc33469 nfsd: Reduce contention for the nfsd_file nf_rwsem
When flushing out the unstable file writes as part of a COMMIT call, try
to perform most of of the data writes and waits outside the semaphore.

This means that if the client is sending the COMMIT as part of a memory
reclaim operation, then it can continue performing I/O, with contention
for the lock occurring only once the data sync is finished.

Fixes: 5011af4c69 ("nfsd: Fix stable writes")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
 Tested-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-07-06 20:14:44 -04:00
J. Bruce Fields
05570a2b01 nfsd: rpc_peeraddr2str needs rcu lock
I'm not even sure cl_xprt can change here, but we're getting "suspicious
RCU usage" warnings, and other rpc_peeraddr2str callers are taking the
rcu lock.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-07-06 20:14:42 -04:00
Wei Yongjun
54185267e1 NFSD: Fix error return code in nfsd4_interssc_connect()
'status' has been overwritten to 0 after nfsd4_ssc_setup_dul(), this
cause 0 will be return in vfs_kern_mount() error case. Fix to return
nfserr_nodev in this error.

Fixes: f4e44b3933 ("NFSD: delay unmount source's export after inter-server copy completed.")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-07-06 20:14:41 -04:00
Dai Ngo
f47dc2d301 nfsd: fix kernel test robot warning in SSC code
Fix by initializing pointer nfsd4_ssc_umount_item with NULL instead of 0.
Replace return value of nfsd4_ssc_setup_dul with __be32 instead of int.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-07-06 20:14:41 -04:00
Dave Wysochanski
3518c8666f nfsd4: Expose the callback address and state of each NFS4 client
In addition to the client's address, display the callback channel
state and address in the 'info' file.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-07-06 20:14:41 -04:00
J. Bruce Fields
934bd07fae nfsd: move fsnotify on client creation outside spinlock
This was causing a "sleeping function called from invalid context"
warning.

I don't think we need the set_and_test_bit() here; clients move from
unconfirmed to confirmed only once, under the client_lock.

The (conf == unconf) is a way to check whether we're in that confirming
case, hopefully that's not too obscure.

Fixes: 472d155a06 "nfsd: report client confirmation status in "info" file"
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-07-06 20:14:41 -04:00
Andy Shevchenko
c0546391c2 nfsd: avoid non-flexible API in seq_quote_mem()
The seq_escape_mem_ascii() is completely non-flexible and shouldn't be
used.  Replace it with properly called seq_escape_mem().

Link: https://lkml.kernel.org/r/20210504180819.73127-15-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Chuck Lever <chuck.lever@oracle.com>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-01 11:06:05 -07:00
Christoph Hellwig
da6269da4c block: remove REQ_OP_SCSI_{IN,OUT}
With the legacy IDE driver gone drivers now use either REQ_OP_DRV_*
or REQ_OP_SCSI_*, so unify the two concepts of passthrough requests
into a single one.

Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-06-30 15:34:19 -06:00
Dai Ngo
f4e44b3933 NFSD: delay unmount source's export after inter-server copy completed.
Currently the source's export is mounted and unmounted on every
inter-server copy operation. This patch is an enhancement to delay
the unmount of the source export for a certain period of time to
eliminate the mount and unmount overhead on subsequent copy operations.

After a copy operation completes, a work entry is added to the
delayed unmount list with an expiration time. This list is serviced
by the laundromat thread to unmount the export of the expired entries.
Each time the export is being used again, its expiration time is
extended and the entry is re-inserted to the tail of the list.

The unmount task and the mount operation of the copy request are
synced to make sure the export is not unmounted while it's being
used.

Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-25 17:06:51 -04:00
Olga Kornievskaia
eac0b17a77 NFSD add vfs_fsync after async copy is done
Currently, the server does all copies as NFS_UNSTABLE. For synchronous
copies linux client will append a COMMIT to the COPY compound but for
async copies it does not (because COMMIT needs to be done after all
bytes are copied and not as a reply to the COPY operation).

However, in order to save the client doing a COMMIT as a separate
rpc, the server can reply back with NFS_FILE_SYNC copy. This patch
proposed to add vfs_fsync() call at the end of the async copy.

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-25 17:06:51 -04:00
J. Bruce Fields
eeeadbb9bd nfsd: move some commit_metadata()s outside the inode lock
The commit may be time-consuming and there's no need to hold the lock
for it.

More of these are possible, these were just some easy ones.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-25 17:06:51 -04:00
Yu Hsiang Huang
e5d74a2d0e nfsd: Prevent truncation of an unlinked inode from blocking access to its directory
Truncation of an unlinked inode may take a long time for I/O waiting, and
it doesn't have to prevent access to the directory. Thus, let truncation
occur outside the directory's mutex, just like do_unlinkat() does.

Signed-off-by: Yu Hsiang Huang <nickhuang@synology.com>
Signed-off-by: Bing Jing Chang <bingjingc@synology.com>
Signed-off-by: Robbie Ko <robbieko@synology.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-25 17:06:51 -04:00
Chuck Lever
d6cbe98ff3 NFSD: Update nfsd_cb_args tracepoint
Clean-up: Re-order the display of IP address and client ID to be
consistent with other _cb_ tracepoints.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:04 -04:00
Chuck Lever
1d2bf65983 NFSD: Remove the nfsd_cb_work and nfsd_cb_done tracepoints
Clean up: These are noise in properly working systems. If you really
need to observe the operation of the callback mechanism, use the
sunrpc:rpc\* tracepoints along with the workqueue tracepoints.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:04 -04:00
Chuck Lever
4ade892ae1 NFSD: Add an nfsd_cb_probe tracepoint
Record a tracepoint event when the server performs a callback
probe. This event can be enabled as a group with other nfsd_cb
tracepoints.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:04 -04:00
Chuck Lever
17d76ddf76 NFSD: Replace the nfsd_deleg_break tracepoint
Renamed so it can be enabled as a set with the other nfsd_cb_
tracepoints. And, consistent with those tracepoints, report the
address of the client, the client ID the server has given it, and
the state ID being recalled.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:04 -04:00
Chuck Lever
87512386e9 NFSD: Add an nfsd_cb_offload tracepoint
Record the arguments of CB_OFFLOAD callbacks so we can better
observe asynchronous copy-offload behavior. For example:

nfsd-995   [008]  7721.934222: nfsd_cb_offload:
        addr=192.168.2.51:0 client 6092a47c:35a43fc1 fh_hash=0x8739113a
        count=116528 status=0

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Olga Kornievskaia <kolga@netapp.com>
Cc: Dai Ngo <Dai.Ngo@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:04 -04:00
Chuck Lever
2cde7f8118 NFSD: Add an nfsd_cb_lm_notify tracepoint
When the server kicks off a CB_LM_NOTIFY callback, record its
arguments so we can better observe asynchronous locking behavior.
For example:

            nfsd-998   [002]  1471.705873: nfsd_cb_notify_lock:  addr=192.168.2.51:0 client 6092a47c:35a43fc1 fh_hash=0x8950b23a

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Jeff Layton <jlayton@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:04 -04:00
Chuck Lever
3c92fba557 NFSD: Enhance the nfsd_cb_setup tracepoint
Display the transport protocol and authentication flavor so admins
can see what they might be getting wrong.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:04 -04:00
Chuck Lever
9f57c6062b NFSD: Remove spurious cb_setup_err tracepoint
This path is not really an error path, so the tracepoint I added
there is just noise.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:04 -04:00
Chuck Lever
b200f0e353 NFSD: Adjust cb_shutdown tracepoint
Show when the upper layer requested a shutdown. RPC tracepoints can
already show when rpc_shutdown_client() is called.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:04 -04:00
Chuck Lever
806d65b617 NFSD: Add cb_lost tracepoint
Provide more clarity about when the callback channel is in trouble.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:04 -04:00
Chuck Lever
167145cc64 NFSD: Drop TRACE_DEFINE_ENUM for NFSD4_CB_<state> macros
TRACE_DEFINE_ENUM() is necessary for enum {} but not for C macros.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:04 -04:00
Chuck Lever
8476c69a7f NFSD: Capture every CB state transition
We were missing one.

As a clean-up, add a helper that sets the new CB state and fires
a tracepoint. The tracepoint fires only when the state changes, to
help reduce trace log noise.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:03 -04:00
Chuck Lever
1736aec82a NFSD: Constify @fh argument of knfsd_fh_hash()
Enable knfsd_fh_hash() to be invoked in functions where the
filehandle pointer is a const.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:03 -04:00
Chuck Lever
e8f80c5545 NFSD: Add tracepoints for EXCHANGEID edge cases
Some of the most common cases are traced. Enough infrastructure is
now in place that more can be added later, as needed.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:03 -04:00
Chuck Lever
237f91c85a NFSD: Add tracepoints for SETCLIENTID edge cases
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:03 -04:00
Chuck Lever
2958d2ee71 NFSD: Add a couple more nfsd_clid_expired call sites
Improve observation of NFSv4 lease expiry.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:03 -04:00
Chuck Lever
c41a9b7a90 NFSD: Add nfsd_clid_destroyed tracepoint
Record client-requested termination of client IDs.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:03 -04:00
Chuck Lever
cee8aa0742 NFSD: Add nfsd_clid_reclaim_complete tracepoint
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:03 -04:00
Chuck Lever
7e3b32ace6 NFSD: Add nfsd_clid_confirmed tracepoint
This replaces a dprintk call site in order to get greater visibility
on when client IDs are confirmed or re-used. Simple example:

            nfsd-995   [000]   126.622975: nfsd_compound:        xid=0x3a34e2b1 opcnt=1
            nfsd-995   [000]   126.623005: nfsd_cb_args:         addr=192.168.2.51:45901 client 60958e3b:9213ef0e prog=1073741824 ident=1
            nfsd-995   [000]   126.623007: nfsd_compound_status: op=1/1 OP_SETCLIENTID status=0
            nfsd-996   [001]   126.623142: nfsd_compound:        xid=0x3b34e2b1 opcnt=1
  >>>>      nfsd-996   [001]   126.623146: nfsd_clid_confirmed:  client 60958e3b:9213ef0e
            nfsd-996   [001]   126.623148: nfsd_cb_probe:        addr=192.168.2.51:45901 client 60958e3b:9213ef0e state=UNKNOWN
            nfsd-996   [001]   126.623154: nfsd_compound_status: op=1/1 OP_SETCLIENTID_CONFIRM status=0

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:03 -04:00
Chuck Lever
0bfaacac57 NFSD: Remove trace_nfsd_clid_inuse_err
This tracepoint has been replaced by nfsd_clid_cred_mismatch and
nfsd_clid_verf_mismatch, and can simply be removed.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:03 -04:00
Chuck Lever
744ea54c86 NFSD: Add nfsd_clid_verf_mismatch tracepoint
Record when a client presents a different boot verifier than the
one we know about. Typically this is a sign the client has
rebooted, but sometimes it signals a conflicting client ID, which
the client's administrator will need to address.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:03 -04:00
Chuck Lever
27787733ef NFSD: Add nfsd_clid_cred_mismatch tracepoint
Record when a client tries to establish a lease record but uses an
unexpected credential. This is often a sign of a configuration
problem.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:02 -04:00
Chuck Lever
87b2394d60 NFSD: Add an RPC authflavor tracepoint display helper
To be used in subsequent patches.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:02 -04:00
Chuck Lever
a948b1142c NFSD: Fix TP_printk() format specifier in nfsd_clid_class
Since commit 9a6944fee6 ("tracing: Add a verifier to check string
pointers for trace events"), which was merged in v5.13-rc1,
TP_printk() no longer tacitly supports the "%.*s" format specifier.

These are low value tracepoints, so just remove them.

Reported-by: David Wysochanski <dwysocha@redhat.com>
Fixes: dd5e3fbc1f ("NFSD: Add tracepoints to the NFSD state management code")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2021-05-18 13:44:02 -04:00
Linus Torvalds
a647034fe2 NFS client updates for Linux 5.13
Highlights include:
 
 Stable fixes:
 - Add validation of the UDP retrans parameter to prevent shift out-of-bounds
 - Don't discard pNFS layout segments that are marked for return
 
 Bugfixes:
 - Fix a NULL dereference crash in xprt_complete_bc_request() when the
   NFSv4.1 server misbehaves.
 - Fix the handling of NFS READDIR cookie verifiers
 - Sundry fixes to ensure attribute revalidation works correctly when the
   server does not return post-op attributes.
 - nfs4_bitmask_adjust() must not change the server global bitmasks
 - Fix major timeout handling in the RPC code.
 - NFSv4.2 fallocate() fixes.
 - Fix the NFSv4.2 SEEK_HOLE/SEEK_DATA end-of-file handling
 - Copy offload attribute revalidation fixes
 - Fix an incorrect filehandle size check in the pNFS flexfiles driver
 - Fix several RDMA transport setup/teardown races
 - Fix several RDMA queue wrapping issues
 - Fix a misplaced memory read barrier in sunrpc's call_decode()
 
 Features:
 - Micro optimisation of the TCP transmission queue using TCP_CORK
 - statx() performance improvements by further splitting up the tracking
   of invalid cached file metadata.
 - Support the NFSv4.2 "change_attr_type" attribute and use it to
   optimise handling of change attribute updates.
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Merge tag 'nfs-for-5.13-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client updates from Trond Myklebust:
 "Highlights include:

  Stable fixes:

   - Add validation of the UDP retrans parameter to prevent shift
     out-of-bounds

   - Don't discard pNFS layout segments that are marked for return

  Bugfixes:

   - Fix a NULL dereference crash in xprt_complete_bc_request() when the
     NFSv4.1 server misbehaves.

   - Fix the handling of NFS READDIR cookie verifiers

   - Sundry fixes to ensure attribute revalidation works correctly when
     the server does not return post-op attributes.

   - nfs4_bitmask_adjust() must not change the server global bitmasks

   - Fix major timeout handling in the RPC code.

   - NFSv4.2 fallocate() fixes.

   - Fix the NFSv4.2 SEEK_HOLE/SEEK_DATA end-of-file handling

   - Copy offload attribute revalidation fixes

   - Fix an incorrect filehandle size check in the pNFS flexfiles driver

   - Fix several RDMA transport setup/teardown races

   - Fix several RDMA queue wrapping issues

   - Fix a misplaced memory read barrier in sunrpc's call_decode()

  Features:

   - Micro optimisation of the TCP transmission queue using TCP_CORK

   - statx() performance improvements by further splitting up the
     tracking of invalid cached file metadata.

   - Support the NFSv4.2 'change_attr_type' attribute and use it to
     optimise handling of change attribute updates"

* tag 'nfs-for-5.13-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (85 commits)
  xprtrdma: Fix a NULL dereference in frwr_unmap_sync()
  sunrpc: Fix misplaced barrier in call_decode
  NFSv4.2: Remove ifdef CONFIG_NFSD from NFSv4.2 client SSC code.
  xprtrdma: Move fr_mr field to struct rpcrdma_mr
  xprtrdma: Move the Work Request union to struct rpcrdma_mr
  xprtrdma: Move fr_linv_done field to struct rpcrdma_mr
  xprtrdma: Move cqe to struct rpcrdma_mr
  xprtrdma: Move fr_cid to struct rpcrdma_mr
  xprtrdma: Remove the RPC/RDMA QP event handler
  xprtrdma: Don't display r_xprt memory addresses in tracepoints
  xprtrdma: Add an rpcrdma_mr_completion_class
  xprtrdma: Add tracepoints showing FastReg WRs and remote invalidation
  xprtrdma: Avoid Send Queue wrapping
  xprtrdma: Do not wake RPC consumer on a failed LocalInv
  xprtrdma: Do not recycle MR after FastReg/LocalInv flushes
  xprtrdma: Clarify use of barrier in frwr_wc_localinv_done()
  xprtrdma: Rename frwr_release_mr()
  xprtrdma: rpcrdma_mr_pop() already does list_del_init()
  xprtrdma: Delete rpcrdma_recv_buffer_put()
  xprtrdma: Fix cwnd update ordering
  ...
2021-05-07 11:23:41 -07:00
Linus Torvalds
a48b0872e6 Merge branch 'akpm' (patches from Andrew)
Merge yet more updates from Andrew Morton:
 "This is everything else from -mm for this merge window.

  90 patches.

  Subsystems affected by this patch series: mm (cleanups and slub),
  alpha, procfs, sysctl, misc, core-kernel, bitmap, lib, compat,
  checkpatch, epoll, isofs, nilfs2, hpfs, exit, fork, kexec, gcov,
  panic, delayacct, gdb, resource, selftests, async, initramfs, ipc,
  drivers/char, and spelling"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (90 commits)
  mm: fix typos in comments
  mm: fix typos in comments
  treewide: remove editor modelines and cruft
  ipc/sem.c: spelling fix
  fs: fat: fix spelling typo of values
  kernel/sys.c: fix typo
  kernel/up.c: fix typo
  kernel/user_namespace.c: fix typos
  kernel/umh.c: fix some spelling mistakes
  include/linux/pgtable.h: few spelling fixes
  mm/slab.c: fix spelling mistake "disired" -> "desired"
  scripts/spelling.txt: add "overflw"
  scripts/spelling.txt: Add "diabled" typo
  scripts/spelling.txt: add "overlfow"
  arm: print alloc free paths for address in registers
  mm/vmalloc: remove vwrite()
  mm: remove xlate_dev_kmem_ptr()
  drivers/char: remove /dev/kmem for good
  mm: fix some typos and code style problems
  ipc/sem.c: mundane typo fixes
  ...
2021-05-07 00:34:51 -07:00
Masahiro Yamada
fa60ce2cb4 treewide: remove editor modelines and cruft
The section "19) Editor modelines and other cruft" in
Documentation/process/coding-style.rst clearly says, "Do not include any
of these in source files."

I recently receive a patch to explicitly add a new one.

Let's do treewide cleanups, otherwise some people follow the existing code
and attempt to upstream their favoriate editor setups.

It is even nicer if scripts/checkpatch.pl can check it.

If we like to impose coding style in an editor-independent manner, I think
editorconfig (patch [1]) is a saner solution.

[1] https://lore.kernel.org/lkml/20200703073143.423557-1-danny@kdrag0n.dev/

Link: https://lkml.kernel.org/r/20210324054457.1477489-1-masahiroy@kernel.org
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>	[auxdisplay]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-05-07 00:26:34 -07:00
Linus Torvalds
a79cdfba68 Additional fixes and clean-ups for NFSD since tags/nfsd-5.13,
including a fix to grant read delegations for files open for
 writing.
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Merge tag 'nfsd-5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull more nfsd updates from Chuck Lever:
 "Additional fixes and clean-ups for NFSD since tags/nfsd-5.13,
  including a fix to grant read delegations for files open for writing"

* tag 'nfsd-5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
  SUNRPC: Fix null pointer dereference in svc_rqst_free()
  SUNRPC: fix ternary sign expansion bug in tracing
  nfsd: Fix fall-through warnings for Clang
  nfsd: grant read delegations to clients holding writes
  nfsd: reshuffle some code
  nfsd: track filehandle aliasing in nfs4_files
  nfsd: hash nfs4_files by inode number
  nfsd: ensure new clients break delegations
  nfsd: removed unused argument in nfsd_startup_generic()
  nfsd: remove unused function
  svcrdma: Pass a useful error code to the send_err tracepoint
  svcrdma: Rename goto labels in svc_rdma_sendto()
  svcrdma: Don't leak send_ctxt on Send errors
2021-05-05 13:44:19 -07:00
Linus Torvalds
d1466bc583 Merge branch 'work.inode-type-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs inode type handling updates from Al Viro:
 "We should never change the type bits of ->i_mode or the method tables
  (->i_op and ->i_fop) of a live inode.

  Unfortunately, not all filesystems took care to prevent that"

* 'work.inode-type-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  spufs: fix bogosity in S_ISGID handling
  9p: missing chunk of "fs/9p: Don't update file type when updating file attributes"
  openpromfs: don't do unlock_new_inode() until the new inode is set up
  hostfs_mknod(): don't bother with init_special_inode()
  cifs: have cifs_fattr_to_inode() refuse to change type on live inode
  cifs: have ->mkdir() handle race with another client sanely
  do_cifs_create(): don't set ->i_mode of something we had not created
  gfs2: be careful with inode refresh
  ocfs2_inode_lock_update(): make sure we don't change the type bits of i_mode
  orangefs_inode_is_stale(): i_mode type bits do *not* form a bitmap...
  vboxsf: don't allow to change the inode type
  afs: Fix updating of i_mode due to 3rd party change
  ceph: don't allow type or device number to change on non-I_NEW inodes
  ceph: fix up error handling with snapdirs
  new helper: inode_wrong_type()
2021-04-27 10:57:42 -07:00
Dai Ngo
d9092b4bb2 NFSv4.2: Remove ifdef CONFIG_NFSD from NFSv4.2 client SSC code.
The client SSC code should not depend on any of the CONFIG_NFSD config.
This patch removes all CONFIG_NFSD from NFSv4.2 client SSC code and
simplifies the config of CONFIG_NFS_V4_2_SSC_HELPER, NFSD_V4_2_INTER_SSC.

Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2021-04-26 09:29:17 -04:00
Gustavo A. R. Silva
76c50eb70d nfsd: Fix fall-through warnings for Clang
In preparation to enable -Wimplicit-fallthrough for Clang, fix multiple
warnings by explicitly adding a couple of break statements instead of
just letting the code fall through to the next case.

Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2021-04-20 16:55:07 -04:00
J. Bruce Fields
aba2072f45 nfsd: grant read delegations to clients holding writes
It's OK to grant a read delegation to a client that holds a write,
as long as it's the only client holding the write.

We originally tried to do this in commit 94415b06eb ("nfsd4: a
client's own opens needn't prevent delegations"), which had to be
reverted in commit 6ee65a7730 ("Revert "nfsd4: a client's own
opens needn't prevent delegations"").

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2021-04-19 16:41:36 -04:00
J. Bruce Fields
ebd9d2c2f5 nfsd: reshuffle some code
No change in behavior, I'm just moving some code around to avoid forward
references in a following patch.

(To do someday: figure out how to split up nfs4state.c.  It's big and
disorganized.)

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2021-04-19 16:41:36 -04:00