linux-toradex.git/include/linux/ceph, branch Colibri_T30_LinuxImageV2.1Beta2_20140206

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

2011-07-26T20:38:50+00:00

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (23 commits)
  ceph: document unlocked d_parent accesses
  ceph: explicitly reference rename old_dentry parent dir in request
  ceph: document locking for ceph_set_dentry_offset
  ceph: avoid d_parent in ceph_dentry_hash; fix ceph_encode_fh() hashing bug
  ceph: protect d_parent access in ceph_d_revalidate
  ceph: protect access to d_parent
  ceph: handle racing calls to ceph_init_dentry
  ceph: set dir complete frag after adding capability
  rbd: set blk_queue request sizes to object size
  ceph: set up readahead size when rsize is not passed
  rbd: cancel watch request when releasing the device
  ceph: ignore lease mask
  ceph: fix ceph_lookup_open intent usage
  ceph: only link open operations to directory unsafe list if O_CREAT|O_TRUNC
  ceph: fix bad parent_inode calc in ceph_lookup_open
  ceph: avoid carrying Fw cap during write into page cache
  libceph: don't time out osd requests that haven't been received
  ceph: report f_bfree based on kb_avail rather than diffing.
  ceph: only queue capsnap if caps are dirty
  ceph: fix snap writeback when racing with writes
  ...

libceph: don't time out osd requests that haven't been received

2011-07-26T18:27:24+00:00

Keep track of when an outgoing message is ACKed (i.e., the server fully
received it and, presumably, queued it for processing).  Time out OSD
requests only if it's been too long since they've been received.

This prevents timeouts and connection thrashing when the OSDs are simply
busy and are throttling the requests they read off the network.

Reviewed-by: Yehuda Sadeh 
Signed-off-by: Sage Weil

treewide: fix potentially dangerous trailing ';' in #defined values/expressions

2011-07-21T12:10:00+00:00

All these are instances of
  #define NAME value;
or
  #define NAME(params_opt) value;

These of course fail to build when used in contexts like
  if(foo $OP NAME)
  while(bar $OP NAME)
and may silently generate the wrong code in contexts such as
  foo = NAME + 1;    /* foo = value; + 1; */
  bar = NAME - 1;    /* bar = value; - 1; */
  baz = NAME & quux; /* baz = value; & quux; */

Reported on comp.lang.c,
Message-ID: 
Initial analysis of the dangers provided by Keith Thompson in that thread.

There are many more instances of more complicated macros having unnecessary
trailing semicolons, but this pile seems to be all of the cases of simple
values suffering from the problem. (Thus things that are likely to be found
in one of the contexts above, more complicated ones aren't.)

Signed-off-by: Phil Carmody 
Signed-off-by: Jiri Kosina

ceph: use LOOKUPINO to make unconnected nfs fh more reliable

2011-05-24T18:52:05+00:00

If we are unable to locate an inode by ino, ask the MDS using the new
LOOKUPINO command.

Signed-off-by: Sage Weil

ceph: Move secret key parsing earlier.

2011-03-29T19:11:16+00:00

This makes the base64 logic be contained in mount option parsing,
and prepares us for replacing the homebew key management with the
kernel key retention service.

Signed-off-by: Tommi Virtanen 
Signed-off-by: Sage Weil

libceph: add lingering request and watch/notify event framework

2011-03-22T18:33:55+00:00

Lingering requests are requests that are sent to the OSD normally but
tracked also after we get a successful request.  This keeps the OSD
connection open and resends the original request if the object moves to
another OSD.  The OSD can then send notification messages back to us
if another client initiates a notify.

This framework will be used by RBD so that the client gets notification
when a snapshot is created by another node or tool.

Signed-off-by: Yehuda Sadeh 
Signed-off-by: Sage Weil

ceph: move readahead default to fs/ceph from libceph

2011-03-21T19:24:23+00:00

Signed-off-by: Sage Weil

ceph: update common header files

2011-03-21T19:24:21+00:00

This updates the common header files used by the different ceph
related modules. Specifically it adds definitions required by
the rbd watch/notify feature.

Signed-off-by: Yehuda Sadeh

libceph: fix osd request queuing on osdmap updates

2011-03-21T19:24:19+00:00

If we send a request to osd A, and the request's pg remaps to osd B and
then back to A in quick succession, we need to resend the request to A. The
old code was only calling kick_requests after processing all incremental
maps in a message, so it was very possible to not resend a request that
needed to be resent.  This would make the osd eventually time out (at least
with the current default of osd timeouts enabled).

The correct approach is to scan requests on every map incremental.  This
patch refactors the kick code in a few ways:
 - all requests are either on req_lru (in flight), req_unsent (ready to
   send), or req_notarget (currently map to no up osd)
 - mapping always done by map_request (previous map_osds)
 - if the mapping changes, we requeue.  requests are resent only after all
   map incrementals are processed.
 - some osd reset code is moved out of kick_requests into a separate
   function
 - the "kick this osd" functionality is moved to kick_osd_requests, as it
   is unrelated to scanning for request->pg->osd mapping changes

Signed-off-by: Sage Weil

libceph: fix msgr keepalive flag

2011-03-04T20:24:31+00:00

There was some broken keepalive code using a dead variable.  Shift to using
the proper bit flag.

Signed-off-by: Sage Weil