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* include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo2010-03-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
* ceph: fix up unexpected message handlingSage Weil2010-02-231-5/+9
| | | | | | | | Fix skipping of unexpected message types from osd, mon. Clean up pr_info and debug output. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: fix authentication races, auth_none oopsSage Weil2010-02-171-16/+13
| | | | | | | | | | | Call __validate_auth() under monc->mutex, and use helper for initial hello so that the pending_auth flag is set. This fixes possible races in which we have an authentication request (hello or otherwise) pending and send another one. In particular, with auth_none, we _never_ want to call ceph_build_auth() from __validate_auth(), since the ->build_request() method is NULL. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: use rbtree for mon statfs requestsSage Weil2010-02-171-20/+47
| | | | | | | An rbtree is lighter weight, particularly given we will generally have very few in-flight statfs requests. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: allow renewal of auth credentialsSage Weil2010-02-111-7/+48
| | | | | | | | | Add infrastructure to allow the mon_client to periodically renew its auth credentials. Also add a messenger callback that will force such a renewal if a peer rejects our authenticator. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: alloc message data pages and check if tid existsYehuda Sadeh2010-01-251-0/+1
| | | | | | | | | | | Now doing it in the same callback that is also responsible for allocating the 'front' part of the message. If we get a message that we haven't got a corresponding tid for, mark it for skipping. Moving the mutex unlock/lock from the osd alloc_msg callback to the calling function in the messenger. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
* ceph: allocate middle of message before stating to readYehuda Sadeh2010-01-251-7/+18
| | | | | | | Both front and middle parts of the message are now being allocated at the ceph_alloc_msg(). Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
* ceph: remove unused erank fieldSage Weil2010-01-141-2/+1
| | | | | | | The ceph_entity_addr erank field is obsolete; remove it. Get rid of trivial addr comparison helpers while we're at it. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: include transaction id in ceph_msg_header (protocol change)Sage Weil2009-12-231-2/+2
| | | | | | | | | | Many (most?) message types include a transaction id. By including it in the fixed size header, we always have it available even when we are unable to allocate memory for the (larger, variable sized) message body. This will allow us to error out the appropriate request instead of (silently) dropping the reply. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: hex dump corrupt server data to KERN_DEBUGSage Weil2009-12-221-0/+2
| | | | | | Also, print fsid using standard format, NOT hex dump. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: fix leak of monc mutexSage Weil2009-12-111-2/+3
| | | | | | | Fix leak of monc mutex on ENOMEM or bad fsid when receiving new mon map. Audited all other users. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: whitespace cleanupSage Weil2009-12-031-1/+1
| | | | Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: remove dead codeSage Weil2009-11-211-21/+0
| | | | | | Left over from mount/auth protocol changes. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: fix debugfs entry, simplify fsid checksSage Weil2009-11-201-105/+8
| | | | | | | | | | | We may first learn our fsid from any of the mon, osd, or mds maps (whichever the monitor sends first). Consolidate checks in a single helper. Initialize the client debugfs entry then, since we need the fsid (and global_id) for the directory name. Also remove dead mount code. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: negotiate authentication protocol; implement AUTH_NONE protocolSage Weil2009-11-191-40/+170
| | | | | | | | | | | | | | | | When we open a monitor session, we send an initial AUTH message listing the auth protocols we support, our entity name, and (possibly) a previously assigned global_id. The monitor chooses a protocol and responds with an initial message. Initially implement AUTH_NONE, a dummy protocol that provides no security, but works within the new framework. It generates 'authorizers' that are used when connecting to (mds, osd) services that simply state our entity name and global_id. This is a wire protocol change. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: use fixed endian encoding for ceph_entity_addrSage Weil2009-11-041-0/+2
| | | | | | | | | We exchange struct ceph_entity_addr over the wire and store it on disk. The sockaddr_storage.ss_family field, however, is host endianness. So, fix ss_family endianness to big endian when sending/receiving over the wire. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: allocate and parse mount args before client instanceSage Weil2009-10-271-0/+38
| | | | | | | | This simplifies much of the error handling during mount. It also means that we have the mount args before client creation, and we can initialize based on those options. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: warn on allocation from msgpool with larger front_lenSage Weil2009-10-161-3/+4
| | | | | | | | Pass the front_len we need when pulling a message off a msgpool, and WARN if it is greater than the pool's size. Then try to allocate a new message (to continue without failing). Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: correct subscribe_ack msgpool payload sizeSage Weil2009-10-161-4/+7
| | | | | | | Defined a struct for the SUBSCRIBE_ACK, and use that to size the msgpool. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: convert encode/decode macros to inlinesSage Weil2009-10-141-2/+2
| | | | | | | This avoids the fugly pass by reference and makes the code a bit easier to read. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: ignore trailing data in monampSage Weil2009-10-121-3/+0
| | | | | | This lets us extend the format more easily. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: update to mon client protocol v15Sage Weil2009-10-101-2/+6
| | | | | | | The mon request headers now include session_mon information that must be properly initialized. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: renew mon subscription before it expiresSage Weil2009-10-081-2/+2
| | | | | | | | Be conservative: renew subscription once half the interval has expired. Do not reuse sub expiration to control hunting. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: monitor clientSage Weil2009-10-061-0/+694
The monitor cluster is responsible for managing cluster membership and state. The monitor client handles what minimal interaction the Ceph client has with it: checking for updated versions of the MDS and OSD maps, getting statfs() information, and unmounting. Signed-off-by: Sage Weil <sage@newdream.net>