linux.git/fs/dlm, branch v5.8

Merge tag 'dlm-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm

2020-06-05T23:43:16+00:00

Pull dlm updates from David Teigland:
 "This set includes a couple minor cleanups, and dropping the
  interruptible from a wait_event that waits for an event from the
  userspace cluster management"

* tag 'dlm-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm:
  dlm: remove BUG() before panic()
  dlm: Switch to using wait_event()
  fs:dlm:remove unneeded semicolon in rcom.c
  dlm: user: Replace zero-length array with flexible-array member
  dlm: dlm_internal: Replace zero-length array with flexible-array member

net: add a new bind_add method

2020-05-29T20:10:39+00:00

The SCTP protocol allows to bind multiple address to a socket.  That
feature is currently only exposed as a socket option.  Add a bind_add
method struct proto that allows to bind additional addresses, and
switch the dlm code to use the method instead of going through the
socket option from kernel space.

Signed-off-by: Christoph Hellwig 
Acked-by: Marcelo Ricardo Leitner 
Signed-off-by: David S. Miller

sctp: add sctp_sock_set_nodelay

2020-05-29T20:10:39+00:00

Add a helper to directly set the SCTP_NODELAY sockopt from kernel space
without going through a fake uaccess.

Signed-off-by: Christoph Hellwig 
Acked-by: Marcelo Ricardo Leitner 
Signed-off-by: David S. Miller

tcp: add tcp_sock_set_nodelay

2020-05-28T18:11:45+00:00

Add a helper to directly set the TCP_NODELAY sockopt from kernel space
without going through a fake uaccess.  Cleanup the callers to avoid
pointless wrappers now that this is a simple function call.

Signed-off-by: Christoph Hellwig 
Acked-by: Sagi Grimberg 
Acked-by: Jason Gunthorpe 
Signed-off-by: David S. Miller

net: add sock_set_rcvbuf

2020-05-28T18:11:44+00:00

Add a helper to directly set the SO_RCVBUFFORCE sockopt from kernel space
without going through a fake uaccess.

Signed-off-by: Christoph Hellwig 
Signed-off-by: David S. Miller

net: add sock_set_keepalive

2020-05-28T18:11:44+00:00

Add a helper to directly set the SO_KEEPALIVE sockopt from kernel space
without going through a fake uaccess.

Signed-off-by: Christoph Hellwig 
Signed-off-by: David S. Miller

net: add sock_set_sndtimeo

2020-05-28T18:11:44+00:00

Add a helper to directly set the SO_SNDTIMEO_NEW sockopt from kernel
space without going through a fake uaccess.  The interface is
simplified to only pass the seconds value, as that is the only
thing needed at the moment.

Signed-off-by: Christoph Hellwig 
Signed-off-by: David S. Miller

net: add sock_set_reuseaddr

2020-05-28T18:11:44+00:00

Add a helper to directly set the SO_REUSEADDR sockopt from kernel space
without going through a fake uaccess.

For this the iscsi target now has to formally depend on inet to avoid
a mostly theoretical compile failure.  For actual operation it already
did depend on having ipv4 or ipv6 support.

Signed-off-by: Christoph Hellwig 
Acked-by: Sagi Grimberg 
Signed-off-by: David S. Miller

dlm: use the tcp version of accept_from_sock for sctp as well

2020-05-27T22:11:33+00:00

The only difference between a few missing fixes applied to the SCTP
one is that TCP uses ->getpeername to get the remote address, while
SCTP uses kernel_getsockopt(.. SCTP_PRIMARY_ADDR).  But given that
getpeername is defined to return the primary address for sctp, there
doesn't seem to be any reason for the different way of quering the
peername, or all the code duplication.

Signed-off-by: Christoph Hellwig 
Signed-off-by: David S. Miller

dlm: remove BUG() before panic()

2020-05-12T19:06:18+00:00

Building a kernel with clang sometimes fails with an objtool error in dlm:

fs/dlm/lock.o: warning: objtool: revert_lock_pc()+0xbd: can't find jump dest instruction at .text+0xd7fc

The problem is that BUG() never returns and the compiler knows
that anything after it is unreachable, however the panic still
emits some code that does not get fully eliminated.

Having both BUG() and panic() is really pointless as the BUG()
kills the current process and the subsequent panic() never hits.
In most cases, we probably don't really want either and should
replace the DLM_ASSERT() statements with WARN_ON(), as has
been done for some of them.

Remove the BUG() here so the user at least sees the panic message
and we can reliably build randconfig kernels.

Fixes: e7fd41792fc0 ("[DLM] The core of the DLM for GFS2/CLVM")
Cc: Josh Poimboeuf 
Cc: clang-built-linux@googlegroups.com
Signed-off-by: Arnd Bergmann 
Signed-off-by: David Teigland