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* sunrpc: skip portmap calls on sessions backchannelJ. Bruce Fields2012-03-261-0/+1
| | | | | | | There's obviously no point to doing portmap calls over the sessions backchannel. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* nfsd4: allow numeric idmappingJ. Bruce Fields2012-03-262-4/+55
| | | | | | | | | | | | | | | | | | | | | | Mimic the client side by providing a module parameter that turns off idmapping in the auth_sys case, for backwards compatibility with NFSv2 and NFSv3. Unlike in the client case, we don't have any way to negotiate, since the client can return an error to us if it doesn't like the id that we return to it in (for example) a getattr call. However, it has always been possible for servers to return numeric id's, and as far as we're aware clients have always been able to handle them. Also, in the auth_sys case clients already need to have numeric id's the same between client and server. Therefore we believe it's safe to default this to on; but the module parameter is available to return to previous behavior if this proves to be a problem in some unexpected setup. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* nfsd: don't allow legacy client tracker init for anything but init_netJeff Layton2012-03-261-0/+7
| | | | | | | | This code isn't set up for containers, so don't allow it to be used for anything but init_net. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* nfsd: add notifier to handle mount/unmount of rpc_pipefs sbJeff Layton2012-03-263-1/+53
| | | | | | | | | In the event that rpc_pipefs isn't mounted when nfsd starts, we must register a notifier to handle creating the dentry once it is mounted, and to remove the dentry on unmount. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* nfsd: add the infrastructure to handle the cld upcallJeff Layton2012-03-261-1/+443
| | | | | | | | | | | | | | | | | | | | | | | | ...and add a mechanism for switching between the "legacy" tracker and the new one. The decision is made by looking to see whether the v4recoverydir exists. If it does, then the legacy client tracker is used. If it's not, then the kernel will create a "cld" pipe in rpc_pipefs. That pipe is used to talk to a daemon for handling the upcall. Most of the data structures for the new client tracker are handled on a per-namespace basis, so this upcall should be essentially ready for containerization. For now however, nfsd just starts it by calling the initialization and exit functions for init_net. I'm making the assumption that at some point in the future we'll be able to determine the net namespace from the nfs4_client. Until then, this patch hardcodes init_net in those places. I've sprinkled some "FIXME" comments around that code to attempt to make it clear where we'll need to fix that up later. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* nfsd: add a header describing upcall to nfsdcldJeff Layton2012-03-261-0/+56
| | | | | | | | The daemon takes a versioned binary struct. Hopefully this should allow us to revise the struct later if it becomes necessary. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* nfsd: add a per-net-namespace struct for nfsdJeff Layton2012-03-262-1/+48
| | | | | | | | | | | | Eventually, we'll need this when nfsd gets containerized fully. For now, create a struct on a per-net-namespace basis that will just hold a pointer to the cld_net structure. That struct will hold all of the per-net data that we need for the cld tracker. Eventually we can add other pernet objects to struct nfsd_net. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* sunrpc: create nfsd dir in rpc_pipefsJeff Layton2012-03-261-0/+5
| | | | | | | | Add a new top-level dir in rpc_pipefs to hold the pipe for the clientid upcall. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* nfsd: add nfsd4_client_tracking_ops struct and a way to set itJeff Layton2012-03-263-58/+156
| | | | | | | | | | | | | | | | | | | Abstract out the mechanism that we use to track clients into a set of client name tracking functions. This gives us a mechanism to plug in a new set of client tracking functions without disturbing the callers. It also gives us a way to decide on what tracking scheme to use at runtime. For now, this just looks like pointless abstraction, but later we'll add a new alternate scheme for tracking clients on stable storage. Note too that this patch anticipates the eventual containerization of this code by passing in struct net pointers in places. No attempt is made to containerize the legacy client tracker however. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* nfsd: convert nfs4_client->cl_cb_flags to a generic flags fieldJeff Layton2012-03-265-33/+47
| | | | | | | | | | | | | | | | | | | We'll need a way to flag the nfs4_client as already being recorded on stable storage so that we don't continually upcall. Currently, that's recorded in the cl_firststate field of the client struct. Using an entire u32 to store a flag is rather wasteful though. The cl_cb_flags field is only using 2 bits right now, so repurpose that to a generic flags field. Rename NFSD4_CLIENT_KILL to NFSD4_CLIENT_CB_KILL to make it evident that it's part of the callback flags. Add a mask that we can use for existing checks that look to see whether any flags are set, so that the new flags don't interfere. Convert all references to cl_firstate to the NFSD4_CLIENT_STABLE flag, and add a new NFSD4_CLIENT_RECLAIM_COMPLETE flag. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* Merge nfs containerization work from Trond's treeJ. Bruce Fields2012-03-26229-3788/+6039
|\ | | | | | | | | The nfs containerization work is a prerequisite for Jeff Layton's reboot recovery rework.
| * NFS: fix sb->s_id in nfs debug printsVivek Trivedi2012-03-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | NFS bdi flush thread in ps output is printed like "flush-<major number in decimal>:<minor number in decimal>" For example: $ ps aux | grep flush 2079 root 0 SW [flush-0:18] ^^^^ nfs_bdi_register() ==> bdi_register_dev() ==> bdi_register(bdi, NULL, "%u:%u", MAJOR(dev), MINOR(dev)); ^^^^^ However, NFS sb->s_id store major:minor number in hex: nfs_initialise_sb() ==> snprintf(sb->s_id, sizeof(sb->s_id), "%x:%x", MAJOR(sb->s_dev), MINOR(sb->s_dev)); ^^^^^ If we enable nfs debug prints using command: $ rpcdebug -m nfs -s all write to a file: $ dd if=/dev/zero of=<NFS Mount>/testfile.txt bs=32768 count=1 Without Patch: [ 2431.032000] NFS: 0 initiated write call (req 0:12/40, 32768 bytes @ offset 0) ^^^^ With Patch: [ 2431.032000] NFS: 0 initiated write call (req 0:18/40, 32768 bytes @ offset 0) ^^^^ We should store NFS "s->s_id" in decimal to avoid confusion between NFS flush thread name(in ps output) and NFS debug prints. Signed-off-by: Vivek Trivedi <vtrivedi018@gmail.com> Signed-off-by: Namjae Jeon <linkinjeon@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * xprtrdma: Remove assumption that each segment is <= PAGE_SIZETom Tucker2012-03-211-5/+12
| | | | | | | | | | | | | | | | The xprtrdma FRMR mapping logic assumes that a segment is <= PAGE_SIZE. This is not true for NFS4. Signed-off-by: Tom Tucker <tom@ogc.us> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * xprtrdma: The transport should not bug-check when a dup reply is receivedTom Tucker2012-03-211-2/+7
| | | | | | | | | | | | | | | | The client side RDMA transport will bug check if it receives a duplicate reply, instead we should simply drop the duplicate reply. Signed-off-by: Tom Tucker <tom@ogc.us> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * pnfs-obj: autologin: Add support for protocol autologinSachin Bhamare2012-03-215-0/+205
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The pnfs-objects protocol mandates that we autologin into devices not present in the system, according to information specified in the get_device_info returned from the server. The Protocol specifies two login hints. 1. An IP address:port combination 2. A string URI which is constructed as a URL with a protocol prefix followed by :// and a string as address. For each protocol prefix the string-address format might be different. We only support the second option. The first option is just redundant to the second one. NOTE: The Kernel part of autologin does not parse the URI string. It just channels it to a user-mode script. So any new login protocols should only update the user-mode script which is a part of the nfs-utils package, but the Kernel need not change. We implement the autologin by using the call_usermodehelper() API. (Thanks to Steve Dickson <steved@redhat.com> for pointing it out) So there is no running daemon needed, and/or special setup. We Add the osd_login_prog Kernel module parameters which defaults to: /sbin/osd_login Kernel try's to upcall the program specified in osd_login_prog. If the file is not found or the execution fails Kernel will disable any farther upcalls, by zeroing out osd_login_prog, Until Admin re-enables it by setting the osd_login_prog parameter to a proper program. Also add text about the osd_login program command line API to: Documentation/filesystems/nfs/pnfs.txt and documentation of the new osd_login_prog module parameter to: Documentation/kernel-parameters.txt TODO: Add timeout option in the case osd_login program gets stuck Signed-off-by: Sachin Bhamare <sbhamare@panasas.com> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: Remove nfs4_setup_sequence from generic rename codeBryan Schumaker2012-03-215-22/+37
| | | | | | | | | | | | | | | | This is an NFS v4 specific operation, so it belongs in the NFS v4 code and not the generic client. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: Remove nfs4_setup_sequence from generic unlink codeBryan Schumaker2012-03-215-19/+34
| | | | | | | | | | | | | | | | This is an NFS v4 specific operation, so it belongs in the NFS v4 code and not the generic client. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: Remove nfs4_setup_sequence from generic read codeBryan Schumaker2012-03-216-14/+25
| | | | | | | | | | | | | | | | This is an NFS v4 specific operation, so it belongs in the NFS v4 code and not the generic client. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: Remove nfs4_setup_sequence from generic write codeBryan Schumaker2012-03-216-18/+25
| | | | | | | | | | | | | | | | This is an NFS v4 specific operation, so it belongs in the NFS v4 code and not the generic client. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: Fix more NFS debug related build warningsTrond Myklebust2012-03-215-5/+14
| | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * SUNRPC/LOCKD: Fix build warnings when CONFIG_SUNRPC_DEBUG is undefinedTrond Myklebust2012-03-212-44/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Stephen Rothwell reports: net/sunrpc/rpcb_clnt.c: In function 'rpcb_enc_mapping': net/sunrpc/rpcb_clnt.c:820:19: warning: unused variable 'task' [-Wunused-variable] net/sunrpc/rpcb_clnt.c: In function 'rpcb_dec_getport': net/sunrpc/rpcb_clnt.c:837:19: warning: unused variable 'task' [-Wunused-variable] net/sunrpc/rpcb_clnt.c: In function 'rpcb_dec_set': net/sunrpc/rpcb_clnt.c:860:19: warning: unused variable 'task' [-Wunused-variable] net/sunrpc/rpcb_clnt.c: In function 'rpcb_enc_getaddr': net/sunrpc/rpcb_clnt.c:892:19: warning: unused variable 'task' [-Wunused-variable] net/sunrpc/rpcb_clnt.c: In function 'rpcb_dec_getaddr': net/sunrpc/rpcb_clnt.c:914:19: warning: unused variable 'task' [-Wunused-variable] fs/lockd/svclock.c:49:20: warning: 'nlmdbg_cookie2a' declared 'static' but never defined [-Wunused-function] Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * nfs: non void functions must return a valueStephen Rothwell2012-03-211-0/+1
| | | | | | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * SUNRPC: Kill compiler warning when RPC_DEBUG is unsetChuck Lever2012-03-211-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Loads of these: linux/net/sunrpc/rpcb_clnt.c:942:2: warning: suggest braces around empty body in ‘do’ statement [-Wempty-body] show up when I unset CONFIG_PROC_SYSCTL. Seen with gcc (GCC) 4.6.1 20110908 (Red Hat 4.6.1-9) Reported-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * SUNRPC/NFS: Add Kbuild dependencies for NFS_DEBUG/RPC_DEBUGTrond Myklebust2012-03-207-13/+31
| | | | | | | | | | | | | | | | | | | | | | | | This allows us to turn on/off the dprintk() debugging interfaces for those distributions that don't ship the 'rpcdebug' utility. It also allows us to add Kbuild dependencies. Specifically, we already know that dprintk() in general relies on CONFIG_SYSCTL. Now it turns out that the NFS dprintks depend on CONFIG_CRC32 after we added support for the filehandle hash. Reported-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: Use cond_resched_lock() to reduce latencies in the commit scansTrond Myklebust2012-03-203-10/+20
| | | | | | | | | | | | | | | | | | | | Ensure that we conditionally drop the inode->i_lock when it is safe to do so in the commit loops. We do so after locking the nfs_page, but before removing it from the commit list. We can then use list_safe_reset_next to recover the loop after the lock is retaken. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4: It is not safe to dereference lsp->ls_state in release_lockownerTrond Myklebust2012-03-203-7/+7
| | | | | | | | | | | | | | | | It is quite possible for the release_lockowner RPC call to race with the close RPC call, in which case, we cannot dereference lsp->ls_state in order to find the nfs_server. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: ncommit count is being double decrementedFred Isaman2012-03-201-4/+1
| | | | | | | | | | | | | | | | The decrement is handled by each call to nfs_request_remove_commit_list, no need to do it again in nfs_scan_commit. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * SUNRPC: We must not use list_for_each_entry_safe() in rpc_wake_up()Trond Myklebust2012-03-191-4/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The problem is that for the case of priority queues, we have to assume that __rpc_remove_wait_queue_priority will move new elements from the tk_wait.links lists into the queue->tasks[] list. We therefore cannot use list_for_each_entry_safe() on queue->tasks[], since that will skip these new tasks that __rpc_remove_wait_queue_priority is adding. Without this fix, rpc_wake_up and rpc_wake_up_status will both fail to wake up all functions on priority wait queues, which can result in some nasty hangs. Reported-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org
| * Try using machine credentials for RENEW callsSachin Prabhu2012-03-171-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | Using user credentials for RENEW calls will fail when the user credentials have expired. To avoid this, try using the machine credentials when making RENEW calls. If no machine credentials have been set, fall back to using user credentials as before. Signed-off-by: Sachin Prabhu <sprabhu@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1: Fix a few issues in filelayout_commit_pagelistTrond Myklebust2012-03-171-23/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Fix a race in which NFS_I(inode)->commits_outstanding could potentially go to zero (triggering a call to nfs_commit_clear_lock()) before we're done sending out all the commit RPC calls. - If nfs_commitdata_alloc fails, there is no reason why we shouldn't try to send off all the commits-to-ds. - Simplify the error handling. - Change pnfs_commit_list() to always return either PNFS_ATTEMPTED or PNFS_NOT_ATTEMPTED. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Fred Isaman <iisaman@netapp.com>
| * NFSv4.1: Clean ups and bugfixes for the pNFS read/writeback/commit codeTrond Myklebust2012-03-177-97/+183
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move more pnfs-isms out of the generic commit code. Bugfixes: - filelayout_scan_commit_lists doesn't need to get/put the lseg. In fact since it is run under the inode->i_lock, the lseg_put() can deadlock. - Ensure that we distinguish between what needs to be done for commit-to-data server and what needs to be done for commit-to-MDS using the new flag PG_COMMIT_TO_DS. Otherwise we may end up calling put_lseg() on a bucket for a struct nfs_page that got written through the MDS. - Fix a case where we were using list_del() on an nfs_page->wb_list instead of list_del_init(). - filelayout_initiate_commit needs to call filelayout_commit_release on error instead of the mds_ops->rpc_release(). Otherwise it won't clear the commit lock. Cleanups: - Let the files layout manage the commit lists for the pNFS case. Don't expose stuff like pnfs_choose_commit_list, and the fact that the commit buckets hold references to the layout segment in common code. - Cast out the put_lseg() calls for the struct nfs_read/write_data->lseg into the pNFS layer from whence they came. - Let the pNFS layer manage the NFS_INO_PNFS_COMMIT bit. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Fred Isaman <iisaman@netapp.com>
| * NFS: Fix a compile error when !defined NFS_DEBUGTrond Myklebust2012-03-151-1/+1
| | | | | | | | | | | | | | | | | | We should use the 'ifdebug' wrapper rather than trying to inline tests of nfs_debug, so that the code compiles correctly when we don't define NFS_DEBUG. Reported-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4: Rate limit the state manager for lock reclaim warning messagesWilliam Dauchy2012-03-141-1/+2
| | | | | | | | | | | | | | Adding rate limit on `Lock reclaim failed` messages since it could fill up system logs Signed-off-by: William Dauchy <wdauchy@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * pnfs-obj: Uglify objio_segment allocation for the sake of the principle :-(Boaz Harrosh2012-03-141-14/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | At some past instance Linus Trovalds wrote: > From: Linus Torvalds <torvalds@linux-foundation.org> > commit a84a79e4d369a73c0130b5858199e949432da4c6 upstream. > > The size is always valid, but variable-length arrays generate worse code > for no good reason (unless the function happens to be inlined and the > compiler sees the length for the simple constant it is). > > Also, there seems to be some code generation problem on POWER, where > Henrik Bakken reports that register r28 can get corrupted under some > subtle circumstances (interrupt happening at the wrong time?). That all > indicates some seriously broken compiler issues, but since variable > length arrays are bad regardless, there's little point in trying to > chase it down. > > "Just don't do that, then". Since then any use of "variable length arrays" has become blasphemous. Even in perfectly good, beautiful, perfectly safe code like the one below where the variable length arrays are only used as a sizeof() parameter, for type-safe dynamic structure allocations. GCC is not executing any stack allocation code. I have produced a small file which defines two functions main1(unsigned numdevs) and main2(unsigned numdevs). main1 uses code as before with call to malloc and main2 uses code as of after this patch. I compiled it as: gcc -O2 -S see_asm.c and here is what I get: <see_asm.s> main1: .LFB7: .cfi_startproc mov %edi, %edi leaq 4(%rdi,%rdi), %rdi salq $3, %rdi jmp malloc .cfi_endproc .LFE7: .size main1, .-main1 .p2align 4,,15 .globl main2 .type main2, @function main2: .LFB8: .cfi_startproc mov %edi, %edi addq $2, %rdi salq $4, %rdi jmp malloc .cfi_endproc .LFE8: .size main2, .-main2 .section .text.startup,"ax",@progbits .p2align 4,,15 </see_asm.s> *Exact* same code !!! So please seriously consider not accepting this patch and leave the perfectly good code intact. CC: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: null dereference in dev_remove()Dan Carpenter2012-03-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | In commit 5ffaf85541 "NFS: replace global bl_wq with per-net one" we made "msg" a pointer instead of a struct stored in stack memory. But we forgot to change the memset() here so we're still clearing stack memory instead clearing the struct like we intended. It will lead to a kernel crash. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4: Rate limit the state manager warning messagesTrond Myklebust2012-03-123-4/+6
| | | | | | | | | | | | | | | | Prevent the state manager from filling up system logs when recovery fails on the server. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org
| * SUNRPC: Don't use variable length automatic arrays in kernel codeTrond Myklebust2012-03-121-2/+5
| | | | | | | | | | | | | | | | Replace the variable length array in the RPCSEC_GSS crypto code with a fixed length one. The size should be bounded by the variable GSS_KRB5_MAX_BLOCKSIZE, so use that. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: Check return value from rpc_queue_upcall()Bryan Schumaker2012-03-121-2/+7
| | | | | | | | | | | | | | | | | | This function could fail to queue the upcall if rpc.idmapd is not running, causing a warning message to be printed. Instead, I want to check the return value and revoke the key if the upcall can't be run. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: Only define some function when v4.1 is enabledBryan Schumaker2012-03-121-0/+4
| | | | | | | | | | | | | | | | Now that the nfs4_cb_match_client() function is static, gcc notices that it is only used when CONFIG_NFS_V4_1 is enabled. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * SUNRPC: Fix a few sparse warningsTrond Myklebust2012-03-1210-25/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | net/sunrpc/svcsock.c:412:22: warning: incorrect type in assignment (different address spaces) - svc_partial_recvfrom now takes a struct kvec, so the variable save_iovbase needs to be an ordinary (void *) Make a bunch of variables in net/sunrpc/xprtsock.c static Fix a couple of "warning: symbol 'foo' was not declared. Should it be static?" reports. Fix a couple of conflicting function declarations. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: Fix a number of sparse warningsTrond Myklebust2012-03-1113-33/+38
| | | | | | | | | | | | | | | | | | | | | | | | | | Fix a number of "warning: symbol 'foo' was not declared. Should it be static?" conditions. Fix 2 cases of "warning: Using plain integer as NULL pointer" fs/nfs/delegation.c:263:31: warning: restricted fmode_t degrades to integer - We want to allow upgrades to a WRITE delegation, but should otherwise consider servers that hand out duplicate delegations to be borken. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: replace global bl_wq with per-net oneStanislav Kinsbursky2012-03-115-31/+39
| | | | | | | | | | | | | | | | | | | | | | | | | | This queue is used for sleeping in kernel and it have to be per-net since we don't want to wake any other waiters except in out network nemespace. BTW, move wq to per-net data is easy. But some way to handle upcall timeouts have to be provided. On message destroy in case of timeout, tasks, waiting for message to be delivered, should be awakened. Thus, some data required to located the right wait queue. Chosen solution replaces rpc_pipe_msg object with new introduced bl_pipe_msg object, containing rpc_pipe_msg and proper wq. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: replace global bl_mount_reply with per-net oneStanislav Kinsbursky2012-03-113-9/+11
| | | | | | | | | | | | | | | | This global variable is used for blocklayout downcall and thus can be corrupted if case of existence of multiple networks namespaces. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: remove nfs_inode radix treeFred Isaman2012-03-109-194/+208
| | | | | | | | | | | | | | | | The radix tree is only being used to compile lists of reqs needing commit. It is simpler to just put the reqs directly into a list. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: remove NFS_PAGE_TAG_LOCKEDFred Isaman2012-03-103-45/+10
| | | | | | | | | | | | | | | | The last real use of this tag was removed by commit 7f2f12d963 NFS: Simplify nfs_wb_page() Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.0: Re-establish the callback channel on NFS4ERR_CB_PATHDOWNTrond Myklebust2012-03-103-20/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | When the NFSv4.0 server tells us that it can no-longer talk to us on the callback channel, we should attempt a new SETCLIENTID in order to re-transmit the callback channel information. Note that as long as we do not change the boot verifier, this is a safe procedure; the server is required to keep our state. Also move the function nfs_handle_cb_pathdown to fs/nfs/nfs4state.c, and change the name in order to mark it as being specific to NFSv4.0. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4: Clean up nfs4_select_rw_stateid()Trond Myklebust2012-03-094-20/+49
| | | | | | | | | | | | | | Ensure that we select delegation stateids first, then lock stateids and then open stateids. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFS: Don't copy read delegation stateids in setattrTrond Myklebust2012-03-093-8/+12
| | | | | | | | | | | | The server will just return an NFS4ERR_OPENMODE anyway. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1 cleanup DS stateid error handlingAndy Adamson2012-03-081-7/+2
| | | | | | | | | | | | | | | | The error handler nfs4_state parameter is never NULL in the pNFS case as the open_context must carry an nfs_state. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4: Return the delegation if the server returns NFS4ERR_OPENMODETrond Myklebust2012-03-072-1/+13
| | | | | | | | | | | | | | | | | | | | If a setattr() fails because of an NFS4ERR_OPENMODE error, it is probably due to us holding a read delegation. Ensure that the recovery routines return that delegation in this case. Reported-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org
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