linux-stable.git/fs/ceph/msgpool.c, branch master Linux kernel stable tree ceph: factor out libceph from Ceph file system 2010-10-20T22:37:28+00:00 Yehuda Sadeh yehuda@hq.newdream.net 2010-04-06T22:14:15+00:00 3d14c5d2b6e15c21d8e5467dc62d33127c23a644 This factors out protocol and low-level storage parts of ceph into a separate libceph module living in net/ceph and include/linux/ceph. This is mostly a matter of moving files around. However, a few key pieces of the interface change as well: - ceph_client becomes ceph_fs_client and ceph_client, where the latter captures the mon and osd clients, and the fs_client gets the mds client and file system specific pieces. - Mount option parsing and debugfs setup is correspondingly broken into two pieces. - The mon client gets a generic handler callback for otherwise unknown messages (mds map, in this case). - The basic supported/required feature bits can be expanded (and are by ceph_fs_client). No functional change, aside from some subtle error handling cases that got cleaned up in the refactoring process. Signed-off-by: Sage Weil <sage@newdream.net> 
This factors out protocol and low-level storage parts of ceph into a
separate libceph module living in net/ceph and include/linux/ceph.  This
is mostly a matter of moving files around.  However, a few key pieces
of the interface change as well:

 - ceph_client becomes ceph_fs_client and ceph_client, where the latter
   captures the mon and osd clients, and the fs_client gets the mds client
   and file system specific pieces.
 - Mount option parsing and debugfs setup is correspondingly broken into
   two pieces.
 - The mon client gets a generic handler callback for otherwise unknown
   messages (mds map, in this case).
 - The basic supported/required feature bits can be expanded (and are by
   ceph_fs_client).

No functional change, aside from some subtle error handling cases that got
cleaned up in the refactoring process.

Signed-off-by: Sage Weil <sage@newdream.net>
ceph: all allocation functions should get gfp_mask 2010-05-17T22:25:42+00:00 Yehuda Sadeh yehuda@hq.newdream.net 2010-04-06T21:33:58+00:00 34d23762d988b7dcb08390ac72a353df3d60193c This is essential, as for the rados block device we'll need to run in different contexts that would need flags that are other than GFP_NOFS. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net> 
This is essential, as for the rados block device we'll need
to run in different contexts that would need flags that
are other than GFP_NOFS.

Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
ceph: name msgpools; useful error messages 2010-05-17T22:25:24+00:00 Sage Weil sage@newdream.net 2010-04-24T16:56:35+00:00 4f48280ee1d0654390cd50ad0c41ea93309e7c91 Signed-off-by: Sage Weil <sage@newdream.net> 
Signed-off-by: Sage Weil <sage@newdream.net>
ceph: simplify ceph_msg_new 2010-05-17T22:25:19+00:00 Sage Weil sage@newdream.net 2010-04-01T23:07:23+00:00 bb257664f748bcfc80715f85f70f0f560caec3b4 We only need to pass in front_len. Callers can attach any other payload pieces (middle, data) as they see fit. Signed-off-by: Sage Weil <sage@newdream.net> 
We only need to pass in front_len.  Callers can attach any other payload
pieces (middle, data) as they see fit.

Signed-off-by: Sage Weil <sage@newdream.net>
ceph: make ceph_msg_new return NULL on failure; clean up, fix callers 2010-05-17T22:25:18+00:00 Sage Weil sage@newdream.net 2010-04-01T23:06:19+00:00 a79832f26be370ee26ea81eecdfd42d10e49d66a Returning ERR_PTR(-ENOMEM) is useless extra work. Return NULL on failure instead, and fix up the callers (about half of which were wrong anyway). Signed-off-by: Sage Weil <sage@newdream.net> 
Returning ERR_PTR(-ENOMEM) is useless extra work.  Return NULL on failure
instead, and fix up the callers (about half of which were wrong anyway).

Signed-off-by: Sage Weil <sage@newdream.net>
ceph: rewrite msgpool using mempool_t 2010-05-17T22:25:18+00:00 Sage Weil sage@newdream.net 2010-04-01T22:23:14+00:00 d52f847a841bfeba0ea87a7842732d388a1ca2e8 Since we don't need to maintain large pools of messages, we can just use the standard mempool_t. We maintain a msgpool 'wrapper' because we need the mempool_t* in the alloc function, and mempool gives us only pool_data. Signed-off-by: Sage Weil <sage@newdream.net> 
Since we don't need to maintain large pools of messages, we can just
use the standard mempool_t.  We maintain a msgpool 'wrapper' because we
need the mempool_t* in the alloc function, and mempool gives us only
pool_data.

Signed-off-by: Sage Weil <sage@newdream.net>
ceph: update for removal of kref_set 2010-05-17T22:25:12+00:00 Stephen Rothwell sfr@canb.auug.org.au 2010-03-17T15:53:04+00:00 f553069e5d7c6f53688ae4470173fcb1be97cbe7 Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Sage Weil <sage@newdream.net> 
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Sage Weil <sage@newdream.net>
ceph: reset front len on return to msgpool; BUG on mismatched front iov 2010-03-01T23:25:00+00:00 Sage Weil sage@newdream.net 2010-03-01T23:25:00+00:00 3ca02ef96e119d36bc1752baeae7dd0c59c2f325 Reset msg front len when a message is returned to the pool: the caller may have changed it. BUG if we try to send a message with a hdr.front_len that doesn't match the front iov. Signed-off-by: Sage Weil <sage@newdream.net> 
Reset msg front len when a message is returned to the pool: the caller
may have changed it.

BUG if we try to send a message with a hdr.front_len that doesn't match
the front iov.

Signed-off-by: Sage Weil <sage@newdream.net>
ceph: more informative msgpool errors 2009-12-23T16:17:21+00:00 Sage Weil sage@newdream.net 2009-12-22T18:45:18+00:00 0cf90ab5b075821940873e73cdbfeb8edc3dabe8 Signed-off-by: Sage Weil <sage@newdream.net> 
Signed-off-by: Sage Weil <sage@newdream.net>
ceph: use kref for ceph_msg 2009-12-07T23:55:05+00:00 Sage Weil sage@newdream.net 2009-12-07T23:55:05+00:00 c2e552e76e2c6907ca50cd9a4b747a2e2e8c615e Signed-off-by: Sage Weil <sage@newdream.net> 
Signed-off-by: Sage Weil <sage@newdream.net>