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* ceph: make mon client statfs handling more genericYehuda Sadeh2010-05-17
| | | | | | | | This is being done so that we could reuse the statfs infrastructure with other requests that return values. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
* include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo2010-03-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: use rbtree for pg pools; decode new osdmap formatSage Weil2010-02-17
| | | | | | | | | | | | Since we can now create and destroy pg pools, the pool ids will be sparse, and an array no longer makes sense for looking up by pool id. Use an rbtree instead. The OSDMap encoding also no longer has a max pool count (previously used to allocate the array). There is a new pool_max, that is the largest pool id we've ever used, although we don't actually need it in the client. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: clean up readdir caps reservationSage Weil2010-02-17
| | | | | | | | | Use a global counter for the minimum number of allocated caps instead of hard coding a check against readdir_max. This takes into account multiple client instances, and avoids examining the superblock mount options when a cap is dropped. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: use rbtree for mon statfs requestsSage Weil2010-02-17
| | | | | | | 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: use rbtree for mds requestsSage Weil2010-02-17
| | | | | | | | | | The rbtree is a more appropriate data structure than a radix_tree. It avoids extra memory usage and simplifies the code. It also fixes a bug where the debugfs 'mdsc' file wasn't including the most recent mds request. Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: display pgid in debugfs osd request dumpSage Weil2010-01-14
| | | | Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: writeback congestion controlYehuda Sadeh2009-12-21
| | | | | | | | Set bdi congestion bit when amount of write data in flight exceeds adjustable threshold. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: include link to bdi in debugfsSage Weil2009-12-21
| | | | Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: fix debugfs entry, simplify fsid checksSage Weil2009-11-20
| | | | | | | | | | | 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: build cleanly without CONFIG_DEBUG_FSSage Weil2009-11-12
| | | | Signed-off-by: Sage Weil <sage@newdream.net>
* ceph: debugfsSage Weil2009-10-06
Basic state information is available via /sys/kernel/debug/ceph, including instances of the client, fsids, current monitor, mds and osd maps, outstanding server requests, and hooks to adjust debug levels. Signed-off-by: Sage Weil <sage@newdream.net>