linux-toradex.git/net/ceph, branch v4.2-rc2

libceph: treat sockaddr_storage with uninitialized family as blank

2015-07-09T17:30:34+00:00

addr_is_blank() should return true if family is neither AF_INET nor
AF_INET6.  This is what its counterpart entity_addr_t::is_blank_ip() is
doing and it is the right thing to do: in process_banner() we check if
our address is blank and if it is "learn" it from our peer.  As it is,
we never learn our address and always send out a blank one.  This goes
way back to ceph.git commit dd732cbfc1c9 ("use sockaddr_storage; and
some ipv6 support groundwork") from 2009.

While at at, do not open-code ipv6_addr_any() and use INADDR_ANY
constant instead of 0.

Signed-off-by: Ilya Dryomov 
Reviewed-by: Sage Weil

libceph: enable ceph in a non-default network namespace

2015-07-09T17:30:34+00:00

Grab a reference on a network namespace of the 'rbd map' (in case of
rbd) or 'mount' (in case of ceph) process and use that to open sockets
instead of always using init_net and bailing if network namespace is
anything but init_net.  Be careful to not share struct ceph_client
instances between different namespaces and don't add any code in the
!CONFIG_NET_NS case.

This is based on a patch from Hong Zhiguo .

Signed-off-by: Ilya Dryomov 
Reviewed-by: Sage Weil

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client

2015-07-02T18:35:00+00:00

Pull Ceph updates from Sage Weil:
 "We have a pile of bug fixes from Ilya, including a few patches that
  sync up the CRUSH code with the latest from userspace.

  There is also a long series from Zheng that fixes various issues with
  snapshots, inline data, and directory fsync, some simplification and
  improvement in the cap release code, and a rework of the caching of
  directory contents.

  To top it off there are a few small fixes and cleanups from Benoit and
  Hong"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (40 commits)
  rbd: use GFP_NOIO in rbd_obj_request_create()
  crush: fix a bug in tree bucket decode
  libceph: Fix ceph_tcp_sendpage()'s more boolean usage
  libceph: Remove spurious kunmap() of the zero page
  rbd: queue_depth map option
  rbd: store rbd_options in rbd_device
  rbd: terminate rbd_opts_tokens with Opt_err
  ceph: fix ceph_writepages_start()
  rbd: bump queue_max_segments
  ceph: rework dcache readdir
  crush: sync up with userspace
  crush: fix crash from invalid 'take' argument
  ceph: switch some GFP_NOFS memory allocation to GFP_KERNEL
  ceph: pre-allocate data structure that tracks caps flushing
  ceph: re-send flushing caps (which are revoked) in reconnect stage
  ceph: send TID of the oldest pending caps flush to MDS
  ceph: track pending caps flushing globally
  ceph: track pending caps flushing accurately
  libceph: fix wrong name "Ceph filesystem for Linux"
  ceph: fix directory fsync
  ...

crush: fix a bug in tree bucket decode

2015-06-30T21:46:35+00:00

struct crush_bucket_tree::num_nodes is u8, so ceph_decode_8_safe()
should be used.  -Wconversion catches this, but I guess it went
unnoticed in all the noise it spews.  The actual problem (at least for
common crushmaps) isn't the u32 -> u8 truncation though - it's the
advancement by 4 bytes instead of 1 in the crushmap buffer.

Fixes: http://tracker.ceph.com/issues/2759

Cc: stable@vger.kernel.org
Signed-off-by: Ilya Dryomov 
Reviewed-by: Josh Durgin

libceph: Fix ceph_tcp_sendpage()'s more boolean usage

2015-06-29T17:03:46+00:00

From struct ceph_msg_data_cursor in include/linux/ceph/messenger.h:

bool    last_piece;     /* current is last piece */

In ceph_msg_data_next():

*last_piece = cursor->last_piece;

A call to ceph_msg_data_next() is followed by:

ret = ceph_tcp_sendpage(con->sock, page, page_offset,
                        length, last_piece);

while ceph_tcp_sendpage() is:

static int ceph_tcp_sendpage(struct socket *sock, struct page *page,
                             int offset, size_t size, bool more)

The logic is inverted: correct it.

Signed-off-by: Benoît Canet 
Reviewed-by: Alex Elder 
Signed-off-by: Ilya Dryomov

libceph: Remove spurious kunmap() of the zero page

2015-06-25T15:30:56+00:00

ceph_tcp_sendpage already does the work of mapping/unmapping
the zero page if needed.

Signed-off-by: Benoît Canet 
Reviewed-by: Alex Elder 
Signed-off-by: Ilya Dryomov

crush: sync up with userspace

2015-06-25T08:49:31+00:00

.. up to ceph.git commit 1db1abc8328d ("crush: eliminate ad hoc diff
between kernel and userspace").  This fixes a bunch of recently pulled
coding style issues and makes includes a bit cleaner.

A patch "crush:Make the function crush_ln static" from Nicholas Krause
 is folded in as crush_ln() has been made static
in userspace as well.

Signed-off-by: Ilya Dryomov

crush: fix crash from invalid 'take' argument

2015-06-25T08:49:31+00:00

Verify that the 'take' argument is a valid device or bucket.
Otherwise ignore it (do not add the value to the working vector).

Reflects ceph.git commit 9324d0a1af61e1c234cc48e2175b4e6320fff8f4.

Signed-off-by: Ilya Dryomov

libceph: fix wrong name "Ceph filesystem for Linux"

2015-06-25T08:49:30+00:00

modinfo libceph prints the module name "Ceph filesystem for Linux",
which is same as the real fs module ceph. It's confusing.

Signed-off-by: Hong Zhiguo 
Signed-off-by: Ilya Dryomov

libceph: a couple tweaks for wait loops

2015-06-25T08:49:29+00:00

- return -ETIMEDOUT instead of -EIO in case of timeout
- wait_event_interruptible_timeout() returns time left until timeout
  and since it can be almost LONG_MAX we had better assign it to long

Signed-off-by: Ilya Dryomov 
Reviewed-by: Alex Elder