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* Merge branch 'for-2.6.30' of git://linux-nfs.org/~bfields/linuxLinus Torvalds2009-04-06
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-2.6.30' of git://linux-nfs.org/~bfields/linux: (81 commits) nfsd41: define nfsd4_set_statp as noop for !CONFIG_NFSD_V4 nfsd41: define NFSD_DRC_SIZE_SHIFT in set_max_drc nfsd41: Documentation/filesystems/nfs41-server.txt nfsd41: CREATE_EXCLUSIVE4_1 nfsd41: SUPPATTR_EXCLCREAT attribute nfsd41: support for 3-word long attribute bitmask nfsd: dynamically skip encoded fattr bitmap in _nfsd4_verify nfsd41: pass writable attrs mask to nfsd4_decode_fattr nfsd41: provide support for minor version 1 at rpc level nfsd41: control nfsv4.1 svc via /proc/fs/nfsd/versions nfsd41: add OPEN4_SHARE_ACCESS_WANT nfs4_stateid bmap nfsd41: access_valid nfsd41: clientid handling nfsd41: check encode size for sessions maxresponse cached nfsd41: stateid handling nfsd: pass nfsd4_compound_state* to nfs4_preprocess_{state,seq}id_op nfsd41: destroy_session operation nfsd41: non-page DRC for solo sequence responses nfsd41: Add a create session replay cache nfsd41: create_session operation ...
| * nfsd41: define NFSD_DRC_SIZE_SHIFT in set_max_drcBenny Halevy2009-04-06
| | | | | | | | | | | | | | | | | | | | | | | | Fixes the following compiler error: fs/nfsd/nfssvc.c: In function 'set_max_drc': fs/nfsd/nfssvc.c:240: error: 'NFSD_DRC_SIZE_SHIFT' undeclared CONFIG_NFSD_V4 is not set Reported-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * nfsd41: control nfsv4.1 svc via /proc/fs/nfsd/versionsBenny Halevy2009-04-03
| | | | | | | | | | | | | | | | | | | | | | | | Support enabling and disabling nfsv4.1 via /proc/fs/nfsd/versions by writing the strings "+4.1" or "-4.1" correspondingly. Use user mode nfs-utils (rpc.nfsd option) to enable. This will allow us to get rid of CONFIG_NFSD_V4_1 [nfsd41: disable support for minorversion by default] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * nfsd41: hard page limit for DRCAndy Adamson2009-04-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use no more than 1/128th of the number of free pages at nfsd startup for the v4.1 DRC. This is an arbitrary default which should probably end up under the control of an administrator. Signed-off-by: Andy Adamson <andros@netapp.com> [moved added fields in struct svc_serv under CONFIG_NFSD_V4_1] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [fix set_max_drc calculation of sv_drc_max_pages] [moved NFSD_DRC_SIZE_SHIFT's declaration up in header file] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * nfsd41: DRC save, restore, and clear functionsAndy Adamson2009-04-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Cache all the result pages, including the rpc header in rq_respages[0], for a request in the slot table cache entry. Cache the statp pointer from nfsd_dispatch which points into rq_respages[0] just past the rpc header. When setting a cache entry, calculate and save the length of the nfs data minus the rpc header for rq_respages[0]. When replaying a cache entry, replace the cached rpc header with the replayed request rpc result header, unless there is not enough room in the cached results first page. In that case, use the cached rpc header. The sessions fore channel maxresponse size cached is set to NFSD_PAGES_PER_SLOT * PAGE_SIZE. For compounds we are cacheing with operations such as READDIR that use the xdr_buf->pages to hold data, we choose to cache the extra page of data rather than copying data from xdr_buf->pages into the xdr_buf->head page. [nfsd41: limit cache to maxresponsesize_cached] [nfsd41: mv nfsd4_set_statp under CONFIG_NFSD_V4_1] [nfsd41: rename nfsd4_move_pages] [nfsd41: rename page_no variable] [nfsd41: rename nfsd4_set_cache_entry] [nfsd41: fix nfsd41_copy_replay_data comment] [nfsd41: add to nfsd4_set_cache_entry] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * knfsd: add file to export stats about nfsd poolsGreg Banks2009-03-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add /proc/fs/nfsd/pool_stats to export to userspace various statistics about the operation of rpc server thread pools. This patch is based on a forward-ported version of knfsd-add-pool-thread-stats which has been shipping in the SGI "Enhanced NFS" product since 2006 and which was previously posted: http://article.gmane.org/gmane.linux.nfs/10375 It has also been updated thus: * moved EXPORT_SYMBOL() to near the function it exports * made the new struct struct seq_operations const * used SEQ_START_TOKEN instead of ((void *)1) * merged fix from SGI PV 990526 "sunrpc: use dprintk instead of printk in svc_pool_stats_*()" by Harshula Jayasuriya. * merged fix from SGI PV 964001 "Crash reading pool_stats before nfsds are started". Signed-off-by: Greg Banks <gnb@sgi.com> Signed-off-by: Harshula Jayasuriya <harshula@sgi.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * knfsd: remove the nfsd thread busy histogramGreg Banks2009-03-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Stop gathering the data that feeds the 'th' line in /proc/net/rpc/nfsd because the questionable data provided is not worth the scalability impact of calculating it. Instead, always report zeroes. The current approach suffers from three major issues: 1. update_thread_usage() increments buckets by call service time or call arrival time...in jiffies. On lightly loaded machines, call service times are usually < 1 jiffy; on heavily loaded machines call arrival times will be << 1 jiffy. So a large portion of the updates to the buckets are rounded down to zero, and the histogram is undercounting. 2. As seen previously on the nfs mailing list, the format in which the histogram is presented is cryptic, difficult to explain, and difficult to use. 3. Updating the histogram requires taking a global spinlock and dirtying the global variables nfsd_last_call, nfsd_busy, and nfsdstats *twice* on every RPC call, which is a significant scaling limitation. Testing on a 4 CPU 4 NIC Altix using 4 IRIX clients each doing 1K streaming reads at full line rate, shows the stats update code (inlined into nfsd()) takes about 1.7% of each CPU. This patch drops the contribution from nfsd() into the profile noise. This patch is a forward-ported version of knfsd-remove-nfsd-threadstats which has been shipping in the SGI "Enhanced NFS" product since 2006. In that time, exactly one customer has noticed that the threadstats were missing. It has been previously posted: http://article.gmane.org/gmane.linux.nfs/10376 and more recently requested to be posted again. Signed-off-by: Greg Banks <gnb@sgi.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* | Merge branch 'for-linus' of ↵Linus Torvalds2009-04-03
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: Remove two unneeded exports and make two symbols static in fs/mpage.c Cleanup after commit 585d3bc06f4ca57f975a5a1f698f65a45ea66225 Trim includes of fdtable.h Don't crap into descriptor table in binfmt_som Trim includes in binfmt_elf Don't mess with descriptor table in load_elf_binary() Get rid of indirect include of fs_struct.h New helper - current_umask() check_unsafe_exec() doesn't care about signal handlers sharing New locking/refcounting for fs_struct Take fs_struct handling to new file (fs/fs_struct.c) Get rid of bumping fs_struct refcount in pivot_root(2) Kill unsharing fs_struct in __set_personality()
| * | Take fs_struct handling to new file (fs/fs_struct.c)Al Viro2009-03-31
| |/ | | | | | | | | | | | | | | | | | | Pure code move; two new helper functions for nfsd and daemonize (unshare_fs_struct() and daemonize_fs_struct() resp.; for now - the same code as used to be in callers). unshare_fs_struct() exported (for nfsd, as copy_fs_struct()/exit_fs() used to be), copy_fs_struct() and exit_fs() don't need exports anymore. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | SUNRPC: Remove @family argument from svc_create() and svc_create_pooled()Chuck Lever2009-03-28
| | | | | | | | | | | | | | | | | | | | Since an RPC service listener's protocol family is specified now via svc_create_xprt(), it no longer needs to be passed to svc_create() or svc_create_pooled(). Remove that argument from the synopsis of those functions, and remove the sv_family field from the svc_serv struct. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | SUNRPC: Change svc_create_xprt() to take a @family argumentChuck Lever2009-03-28
|/ | | | | | | | | | | | The sv_family field is going away. Pass a protocol family argument to svc_create_xprt() instead of extracting the family from the passed-in svc_serv struct. Again, as this is a listener socket and not an address, we make this new argument an "int" protocol family, instead of an "sa_family_t." Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSD: Fix BUG during NFSD shutdown processingChuck Lever2008-10-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Linux NFS server can be started via a user-space write to /proc/fs/nfs/threads or to /proc/fs/nfs/portlist. In the first case, all default listeners are started (both UDP and TCP). In the second, a listener is started only for one specified transport. The NFS server has to make sure lockd stays up until the last listener transport goes away. To support both start-up interfaces, it should do one lockd_up() for each NFSD listener. The nfsd_init_socks() function used to do one lockd_up() call for each svc_create_xprt(). Recently commit 26a414092353590ceaa5955bcb53f863d6ea7549 mistakenly changed nfsd_init_socks() to do only one lockd_up() call even though it still does two svc_create_xprt() calls. The end result is a lockd_down() BUG during NFSD shutdown processing because nfsd_last_threads() does a lockd_down() call for each entry on the sv_permsocks list, but the start-up code doesn't do a matching number of lockd_up() calls. Add a second lockd_up() in nfsd_init_socks() to make sure the number of lockd_up() calls matches the number of entries on the NFS servers's sv_permsocks list. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* NLM: Remove "proto" argument from lockd_up()Chuck Lever2008-10-04
| | | | | | | | | Clean up: Now that lockd_up() starts listeners for both transports, the "proto" argument is no longer needed. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Cc: Neil Brown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* SUNRPC: Add address family field to svc_serv data structureChuck Lever2008-09-29
| | | | | | | | | | Introduce and initialize an address family field in the svc_serv structure. This field will determine what family to use for the service's listener sockets and what families are advertised via the local rpcbind daemon. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: treat all shutdown signals as equivalentJeff Layton2008-06-30
| | | | | | | | | | | | | | | | | knfsd currently uses 2 signal masks when processing requests. A "loose" mask (SHUTDOWN_SIGS) that it uses when receiving network requests, and then a more "strict" mask (ALLOWED_SIGS, which is just SIGKILL) that it allows when doing the actual operation on the local storage. This is apparently unnecessarily complicated. The underlying filesystem should be able to sanely handle a signal in the middle of an operation. This patch removes the signal mask handling from knfsd altogether. When knfsd is started as a kthread, all signals are ignored. It then allows all of the signals in SHUTDOWN_SIGS. There's no need to set the mask as well. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: fix race in nfsd_nrthreads()Neil Brown2008-06-23
| | | | | | | | | We need the nfsd_mutex before accessing nfsd_serv->sv_nrthreads or we can't even guarantee nfsd_serv will still be there. Signed-off-by: Neil Brown <neilb@suse.de> Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* sunrpc: remove sv_kill_signal field from svc_serv structJeff Layton2008-06-23
| | | | | | | | | Since we no longer make any distinction between shutdown signals with nfsd, then it becomes easier to just standardize on a particular signal to use to bring it down (SIGINT, in this case). Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* knfsd: convert knfsd to kthread APIJeff Layton2008-06-23
| | | | | | | | | | | | | | This patch is rather large, but I couldn't figure out a way to break it up that would remain bisectable. It does several things: - change svc_thread_fn typedef to better match what kthread_create expects - change svc_pool_map_set_cpumask to be more kthread friendly. Make it take a task arg and and get rid of the "oldmask" - have svc_set_num_threads call kthread_create directly - eliminate __svc_create_thread Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* knfsd: remove special handling for SIGHUPJeff Layton2008-06-23
| | | | | | | | | | The special handling for SIGHUP in knfsd is a holdover from much earlier versions of Linux where reloading the export table was more expensive. That facility is not really needed anymore and to my knowledge, is seldom-used. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* knfsd: clean up nfsd filesystem interfacesJeff Layton2008-06-23
| | | | | | | | | | | | | | | | | | Several of the nfsd filesystem interfaces allow changes to parameters that don't have any effect on a running nfsd service. They are only ever checked when nfsd is started. This patch fixes it so that changes to those procfiles return -EBUSY if nfsd is already running to make it clear that changes on the fly don't work. The patch should also close some relatively harmless races between changing the info in those interfaces and starting nfsd, since these variables are being moved under the protection of the nfsd_mutex. Finally, the nfsv4recoverydir file always returns -EINVAL if read. This patch fixes it to return the recoverydir path as expected. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* knfsd: Replace lock_kernel with a mutex for nfsd thread startup/shutdown ↵Neil Brown2008-06-23
| | | | | | | | | | | | | | | | locking. This removes the BKL from the RPC service creation codepath. The BKL really isn't adequate for this job since some of this info needs protection across sleeps. Also, add some comments to try and clarify how the locking should work and to make it clear that the BKL isn't necessary as long as there is adequate locking between tasks when touching the svc_serv fields. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* NFSD: Remove NFSD_TCP kernel build optionChuck Lever2008-04-23
| | | | | | | | | | | Likewise, distros usually leave CONFIG_NFSD_TCP enabled. TCP support in the Linux NFS server is stable enough that we can leave it on always. CONFIG_NFSD_TCP adds about 10 lines of code, and defaults to "Y" anyway. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* svc: Make close transport independentTom Tucker2008-02-01
| | | | | | | | | | | | | | | | | | | | Move sk_list and sk_ready to svc_xprt. This involves close because these lists are walked by svcs when closing all their transports. So I combined the moving of these lists to svc_xprt with making close transport independent. The svc_force_sock_close has been changed to svc_close_all and takes a list as an argument. This removes some svc internals knowledge from the svcs. This code races with module removal and transport addition. Thanks to Simon Holm Thøgersen for a compile fix. Signed-off-by: Tom Tucker <tom@opengridcomputing.com> Acked-by: Neil Brown <neilb@suse.de> Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Greg Banks <gnb@sgi.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Cc: Simon Holm Thøgersen <odie@cs.aau.dk>
* svc: Change services to use new svc_create_xprt serviceTom Tucker2008-02-01
| | | | | | | | | | Modify the various kernel RPC svcs to use the svc_create_xprt service. Signed-off-by: Tom Tucker <tom@opengridcomputing.com> Acked-by: Neil Brown <neilb@suse.de> Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Greg Banks <gnb@sgi.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* knfsd: move nfsv4 slab creation/destruction to module init/exitJ. Bruce Fields2007-10-09
| | | | | | | | | | | | | We have some slabs that the nfs4 server uses to store state objects. We're currently creating and destroying those slabs whenever the server is brought up or down. That seems excessive; may as well just do that in module initialization and exit. Also add some minor header cleanup. (Thanks to Andrew Morton for that and a compile fix.) Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Acked-by: Neil Brown <neilb@suse.de>
* knfsd: delete code made redundant by map_new_errorsJ. Bruce Fields2007-10-09
| | | | | | | | I moved this check into map_new_errors, but forgot to delete the original. Oops. Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Acked-by: Neil Brown <neilb@suse.de>
* nfsd: tone down inaccurate dprintkJ. Bruce Fields2007-10-09
| | | | | | | | | | The nfserr_dropit happens routinely on upcalls (so a kmalloc failure is almost never the actual cause), but I occasionally get a complant from some tester that's worried because they ran across this message after turning on debugging to research some unrelated problem. Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Acked-by: Neil Brown <neilb@suse.de>
* knfsd: nfsd4: return nfserr_wrongsecAndy Adamson2007-07-17
| | | | | | | | | | | | Make the first actual use of the secinfo information by using it to return nfserr_wrongsec when an export is found that doesn't allow the flavor used on this request. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Andy Adamson <andros@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Freezer: make kernel threads nonfreezable by defaultRafael J. Wysocki2007-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, the freezer treats all tasks as freezable, except for the kernel threads that explicitly set the PF_NOFREEZE flag for themselves. This approach is problematic, since it requires every kernel thread to either set PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn't care for the freezing of tasks at all. It seems better to only require the kernel threads that want to or need to be frozen to use some freezer-related code and to remove any freezer-related code from the other (nonfreezable) kernel threads, which is done in this patch. The patch causes all kernel threads to be nonfreezable by default (ie. to have PF_NOFREEZE set by default) and introduces the set_freezable() function that should be called by the freezable kernel threads in order to unset PF_NOFREEZE. It also makes all of the currently freezable kernel threads call set_freezable(), so it shouldn't cause any (intentional) change of behaviour to appear. Additionally, it updates documentation to describe the freezing of tasks more accurately. [akpm@linux-foundation.org: build fixes] Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Nigel Cunningham <nigel@nigel.suspend2.net> Cc: Pavel Machek <pavel@ucw.cz> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Detach sched.h from mm.hAlexey Dobriyan2007-05-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | First thing mm.h does is including sched.h solely for can_do_mlock() inline function which has "current" dereference inside. By dealing with can_do_mlock() mm.h can be detached from sched.h which is good. See below, why. This patch a) removes unconditional inclusion of sched.h from mm.h b) makes can_do_mlock() normal function in mm/mlock.c c) exports can_do_mlock() to not break compilation d) adds sched.h inclusions back to files that were getting it indirectly. e) adds less bloated headers to some files (asm/signal.h, jiffies.h) that were getting them indirectly Net result is: a) mm.h users would get less code to open, read, preprocess, parse, ... if they don't need sched.h b) sched.h stops being dependency for significant number of files: on x86_64 allmodconfig touching sched.h results in recompile of 4083 files, after patch it's only 3744 (-8.3%). Cross-compile tested on all arm defconfigs, all mips defconfigs, all powerpc defconfigs, alpha alpha-up arm i386 i386-up i386-defconfig i386-allnoconfig ia64 ia64-up m68k mips parisc parisc-up powerpc powerpc-up s390 s390-up sparc sparc-up sparc64 sparc64-up um-x86_64 x86_64 x86_64-up x86_64-defconfig x86_64-allnoconfig as well as my two usual configs. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] knfsd: SUNRPC: allow creating an RPC service without registering ↵Chuck Lever2007-02-12
| | | | | | | | | | | | | | | | | with portmapper Sometimes we need to create an RPC service but not register it with the local portmapper. NFSv4 delegation callback, for example. Change the svc_makesock() API to allow optionally creating temporary or permanent sockets, optionally registering with the local portmapper, and make it return the ephemeral port of the new socket. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] knfsd: fix setting of ACL server versionsNeilBrown2007-01-26
| | | | | | | | | | | | Due to silly typos, if the nfs versions are explicitly set, no NFSACL versions get enabled. Also improve an error message that would have made this bug a little easier to find. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] nfsd: misc endianness annotationsAl Viro2006-10-20
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no> Acked-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] xdr annotations: nfsd_dispatch()Al Viro2006-10-20
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no> Acked-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: tidy up up meaning of 'buffer size' in nfsd/sunrpcNeilBrown2006-10-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | There is some confusion about the meaning of 'bufsz' for a sunrpc server. In some cases it is the largest message that can be sent or received. In other cases it is the largest 'payload' that can be included in a NFS message. In either case, it is not possible for both the request and the reply to be this large. One of the request or reply may only be one page long, which fits nicely with NFS. So we remove 'bufsz' and replace it with two numbers: 'max_payload' and 'max_mesg'. Max_payload is the size that the server requests. It is used by the server to check the max size allowed on a particular connection: depending on the protocol a lower limit might be used. max_mesg is the largest single message that can be sent or received. It is calculated as the max_payload, rounded up to a multiple of PAGE_SIZE, and with PAGE_SIZE added to overhead. Only one of the request and reply may be this size. The other must be at most one page. Cc: Greg Banks <gnb@sgi.com> Cc: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: fix auto-sizing of nfsd request/reply buffersNeilBrown2006-10-04
| | | | | | | | | | totalram is measured in pages, not bytes, so PAGE_SHIFT must be used when trying to find 1/4096 of RAM. Cc: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: Allow max size of NFSd payload to be configuredNeilBrown2006-10-04
| | | | | | | | | | | | | The max possible is the maximum RPC payload. The default depends on amount of total memory. The value can be set within reason as long as no nfsd threads are currently running. The value can also be ready, allowing the default to be determined after nfsd has started. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: allow admin to set nthreads per nodeGreg Banks2006-10-02
| | | | | | | | | | | Add /proc/fs/nfsd/pool_threads which allows the sysadmin (or a userspace daemon) to read and change the number of nfsd threads in each pool. The format is a list of space-separated integers, one per pool. Signed-off-by: Greg Banks <gnb@melbourne.sgi.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: use svc_set_num_threads to manage threads in knfsdGreg Banks2006-10-02
| | | | | | | | | | Replace the existing list of all nfsd threads with new code using svc_create_pooled(). Signed-off-by: Greg Banks <gnb@melbourne.sgi.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: add svc_getGreg Banks2006-10-02
| | | | | | | | | | add svc_get() for those occasions when we need to temporarily bump up svc_serv->sv_nrthreads as a pseudo refcount. Signed-off-by: Greg Banks <gnb@melbourne.sgi.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: Correctly handle error condition from lockd_upNeilBrown2006-10-02
| | | | | | | | | | | | | | | | | | | | | | If lockd_up fails - what should we expect? Do we have to later call lockd_down? Well the nfs client thinks "no", the nfs server thinks "yes". lockd thinks "yes". The only answer that really makes sense is "no" !! So: Make lockd_up only increment nlmsvc_users on success. Make nfsd handle errors from lockd_up properly. Make sure lockd_up(0) never fails when lockd is running so that the 'reclaimer' call to lockd_up doesn't need to be error checked. Cc: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: Drop 'serv' option to svc_recv and svc_processNeilBrown2006-10-02
| | | | | | | | | | | It isn't needed as it is available in rqstp->rq_server, and dropping it allows some local vars to be dropped. [akpm@osdl.org: build fix] Cc: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: allow sockets to be passed to nfsd via 'portlist'NeilBrown2006-10-02
| | | | | | | | | | | | Userspace should create and bind a socket (but not connectted) and write the 'fd' to portlist. This will cause the nfs server to listen on that socket. To close a socket, the name of the socket - as read from 'portlist' can be written to 'portlist' with a preceding '-'. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: separate out some parts of nfsd_svc, which start nfs serversNeilBrown2006-10-02
| | | | | | | | | | | | Separate out the code for creating a new service, and for creating initial sockets. Some of these new functions will have multiple callers soon. [akpm@osdl.org: cleanups] Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: remove nfsd_versbits as intermediate storage for desired versionsNeilBrown2006-10-02
| | | | | | | | | | | | | | | | | | | | | | We have an array 'nfsd_version' which lists the available versions of nfsd, and 'nfsd_versions' (poor choice there :-() which lists the currently active versions. Then we have a bitmap - nfsd_versbits which says which versions are wanted. The bits in this bitset cause content to be copied from nfsd_version to nfsd_versions when nfsd starts. This patch removes nfsd_versbits and moves information directly from nfsd_version to nfsd_versions when requests for version changes arrive. Note that this doesn't make it possible to change versions while the server is running. This is because serv->sv_xdrsize is calculated when a service is created, and used when threads are created, and xdrsize depends on the active versions. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: be more selective in which sockets lockd listens onNeilBrown2006-10-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | Currently lockd listens on UDP always, and TCP if CONFIG_NFSD_TCP is set. However as lockd performs services of the client as well, this is a problem. If CONFIG_NfSD_TCP is not set, and a tcp mount is used, the server will not be able to call back to lockd. So: - add an option to lockd_up saying which protocol is needed - Always open sockets for which an explicit port was given, otherwise only open a socket of the type required - Change nfsd to do one lockd_up per socket rather than one per thread. This - removes the dependancy on CONFIG_NFSD_TCP - means that lockd may open sockets other than at startup - means that lockd will *not* listen on UDP if the only mounts are TCP mount (and nfsd hasn't started). The latter is the only one that concerns me at all - I don't know if this might be a problem with some servers. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: add a callback for when last rpc thread finishesNeilBrown2006-10-02
| | | | | | | | | | | | nfsd has some cleanup that it wants to do when the last thread exits, and there will shortly be some more. So collect this all into one place and define a callback for an rpc service to call when the service is about to be destroyed. [akpm@osdl.org: cleanups, build fix] Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-30
| | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [PATCH] fs: Use ARRAY_SIZE macroTobias Klauser2006-03-24
| | | | | | | | | | | | | | | | | Use ARRAY_SIZE macro instead of sizeof(x)/sizeof(x[0]) and remove a duplicate of ARRAY_SIZE. Some trailing whitespaces are also deleted. Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch> Cc: David Howells <dhowells@redhat.com> Cc: Dave Kleikamp <shaggy@austin.ibm.com> Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: Neil Brown <neilb@cse.unsw.edu.au> Cc: Chris Mason <mason@suse.com> Cc: Jeff Mahoney <jeffm@suse.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Nathan Scott <nathans@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: Restore recently broken ACL functionality to NFS serverAndreas Gruenbacher2006-02-01
| | | | | | | | | | | | | A recent patch to Allow run-time selection of NFS versions to export meant that NO nfsacl service versions were exported. This patch restored that functionality. Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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