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* Merge branch 'nfs-for-2.6.39' into nfs-for-nextTrond Myklebust2011-03-241-2/+28
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| * Cleanup XDR parsing for LAYOUTGET, GETDEVICEINFOWeston Andros Adamson2011-03-241-2/+4
| | | | | | | | | | | | | | | | | | changes LAYOUTGET and GETDEVICEINFO XDR parsing to: - not use vmap, which doesn't work on incoherent archs - use xdr_stream parsing for all xdr Signed-off-by: Weston Andros Adamson <dros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1: layoutcommitAndy Adamson2011-03-231-0/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The filelayout driver sends LAYOUTCOMMIT only when COMMIT goes to the data server (as opposed to the MDS) and the data server WRITE is not NFS_FILE_SYNC. Only whole file layout support means that there is only one IOMODE_RW layout segment. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Alexandros Batsakis <batsakis@netapp.com> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Mingyang Guo <guomingyang@nrchpc.ac.cn> Signed-off-by: Tao Guo <guotao@nrchpc.ac.cn> Signed-off-by: Zhang Jingwang <zhangjingwang@nrchpc.ac.cn> Tested-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NFSv4.1: filelayout driver specific code for COMMITFred Isaman2011-03-231-0/+1
| | | | | | | | | | | | | | | | | | Implement all the hooks created in the previous patches. This requires exporting quite a few functions and adding a few structure fields. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | NFS: use secinfo when crossing mountpointsBryan Schumaker2011-03-241-0/+1
| | | | | | | | | | | | | | | | | | A submount may use different security than the parent mount does. We should figure out what sec flavor the submount uses at mount time. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | NFS: Add secinfo procedureBryan Schumaker2011-03-241-0/+37
| | | | | | | | | | | | | | | | This patch adds the nfs4 operation secinfo as a valid nfs rpc operation. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | NFS: lookup supports alternate clientBryan Schumaker2011-03-241-1/+1
|/ | | | | | | | | A later patch will need to perform a lookup using an alternate client with a different security flavor. This patch adds support for doing that on NFS v4. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Fix a warning in fs/nfs/idmap.cTrond Myklebust2011-03-141-0/+1
| | | | | | | | | | | | | Commit 45a52a02072b2a7e265f024cfdb00127e08dd9f2 (NFS move nfs_client initialization into nfs_get_client) introduces a new warning in fs/nfs/idmap.c: ‘struct rpc_timeout’ declared inside parameter list Fix it by adding a forward declaration for the struct rpc_timeout in include/linux/nfs_xdr.h Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4.1: pnfs filelayout driver writeFred Isaman2011-03-111-0/+2
| | | | | | | | | | | | | | | | | | | | Allows the pnfs filelayout driver to write to the data servers. Note that COMMIT to data servers will be implemented in a future patch. To avoid improper behavior, for the moment any WRITE to a data server that would also require a COMMIT to the data server is sent NFS_FILE_SYNC. Signed-off-by: Andy Adamson <andros@citi.umich.edu> Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Mingyang Guo <guomingyang@nrchpc.ac.cn> Signed-off-by: Oleg Drokin <green@linuxhacker.ru> Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4.1: implement generic pnfs layer write switchAndy Adamson2011-03-111-0/+1
| | | | | | | | | | | | | | | Signed-off-by: Andy Adamson <andros@citi.umich.edu> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: J. Bruce Fields <bfields@fieldses.org> Signed-off-by: Mike Sager <sager@netapp.com> Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> Signed-off-by: Tao Guo <guotao@nrchpc.ac.cn> Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4.1: Send lseg down into nfs_write_rpcsetupFred Isaman2011-03-111-0/+1
| | | | | | | | | We grab the lseg sent in from the doio function and attach it to each struct nfs_write_data created. This is how the lseg will be sent to the layout driver. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4.1: add callback to nfs4_write_doneFred Isaman2011-03-111-0/+1
| | | | | | | | Add callback that pnfs layout driver can use to do its own handling of data server WRITE response. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4.1: filelayout async error handlerAndy Adamson2011-03-111-0/+1
| | | | | | | | | | | Use our own async error handler. Mark the layout as failed and retry i/o through the MDS on specified errors. Update the mds_offset in nfs_readpage_retry so that a failed short-read retry to a DS gets correctly resent through the MDS. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4.1: filelayout readAndy Adamson2011-03-111-0/+1
| | | | | | | | | | | | | | | | | | | | Attempt a pNFS file layout read by setting up the nfs_read_data struct and calling nfs_initiate_read with the data server rpc client and the filelayout rpc call ops. Error handling is implemented in a subsequent patch. Signed-off-by: Andy Adamson <andros@citi.umich.edu> Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Mingyang Guo <guomingyang@nrchpc.ac.cn> Signed-off-by: Oleg Drokin <green@linuxhacker.ru> Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> Tested-by: Guo Mingyang <guomingyang@nrchpc.ac.cn> Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4.1: data server connectionAndy Adamson2011-03-111-0/+1
| | | | | | | | | | | | | Introduce a data server set_client and init session following the nfs4_set_client and nfs4_init_session convention. Once a new nfs_client is on the nfs_client_list, the nfs_client cl_cons_state serializes access to creating an nfs_client struct with matching properties. Use the new nfs_get_client() that initializes new clients. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4.1: generic readAndy Adamson2011-03-111-0/+1
| | | | | | | | | | | | | | | | | | | | | Separate the rpc run portion of nfs_read_rpcsetup into a new function nfs_initiate_read that is called for normal NFS I/O. Add a pNFS read_pagelist function that is called instead of nfs_intitate_read for pNFS reads. Signed-off-by: Andy Adamson <andros@citi.umich.edu> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Mike Sager <sager@netapp.com> Signed-off-by: Mingyang Guo <guomingyang@nrchpc.ac.cn> Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> Signed-off-by: Tao Guo <guotao@nrchpc.ac.cn> Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4.1: shift pnfs_update_layout locationsFred Isaman2011-03-111-0/+1
| | | | | | | | | | | | | | | | | Move the pnfs_update_layout call location to nfs_pageio_do_add_request(). Grab the lseg sent in the doio function to nfs_read_rpcsetup and attach it to each nfs_read_data so it can be sent to the layout driver. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Andy Adamson <andros@citi.umich.edu> Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Oleg Drokin <green@linuxhacker.ru> Signed-off-by: Tao Guo <guotao@nrchpc.ac.cn> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS move nfs_client initialization into nfs_get_clientAndy Adamson2011-03-111-0/+3
| | | | | | | | Now nfs_get_client returns an nfs_client ready to be used no matter if it was found or created. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: remove CONFIG_NFS_V4 from nfs_read_dataAndy Adamson2011-03-111-2/+0
| | | | | | | | Cleanup nfs_read_data. We also won't use CONFIG_NFS_V4_1 for additional NFSv4.1 fields in subsequent patches. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Ensure continued open and lockowner name uniquenessTrond Myklebust2011-01-061-0/+1
| | | | | | | | | | | | | In order to enable migration support, we will want to move some of the structures that are subject to migration into the struct nfs_server. In particular, if we are to move the state_owner and state_owner_id to being a per-filesystem structure, then we should label the resulting open/lock owners with a per-filesytem label to ensure global uniqueness. This patch does so by adding the super block s_dev to the open/lock owner name. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* pnfs: serialize LAYOUTGET(openstateid)Fred Isaman2011-01-061-0/+1
| | | | | | | | | | | | We shouldn't send a LAYOUTGET(openstateid) unless all outstanding RPCs using the previous stateid are completed. This requires choosing the stateid to encode earlier, so we can abort if one is not available (we want to use the open stateid, but a LAYOUTGET is already out using it), and adding a count of the number of outstanding rpc calls using layout state (which for now consist solely of LAYOUTGETs). Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* pnfs: remove unnecessary field lgp->statusFred Isaman2011-01-061-1/+0
| | | | | | Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Simplify ->decode_dirent() calling sequenceChuck Lever2010-12-161-1/+2
| | | | | | | | | | | | | | | | | | | | | | Clean up. The pointer returned by ->decode_dirent() is no longer used as a pointer. The only call site (xdr_decode() in fs/nfs/dir.c) simply extracts the errno value encoded in the pointer. Replace the returned pointer with a standard integer errno return value. Also, pass the "server" argument as part of the nfs_entry instead of as a separate parameter. It's faster to derive "server" in nfs_readdir_xdr_to_array() since we already have the directory's inode handy. "server" ought to be invariant for a set of entries in the same directory, right? The legacy versions of decode_dirent() don't use "server" anyway, so it's wasted work for them to derive and pass "server" for each entry. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Tested-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Ensure we return the dirent->d_type when it is knownTrond Myklebust2010-11-221-0/+1
| | | | | | | | | Store the dirent->d_type in the struct nfs_cache_array_entry so that we can use it in getdents() calls. This fixes a regression with the new readdir code. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4.1: pnfs: add LAYOUTGET and GETDEVICEINFO infrastructureAndy Adamson2010-10-241-0/+49
| | | | | | | | | | | | | | | | | | | Add the ability to actually send LAYOUTGET and GETDEVICEINFO. This also adds in the machinery to handle layout state and the deviceid cache. Note that GETDEVICEINFO is not called directly by the generic layer. Instead it is called by the drivers while parsing the LAYOUTGET opaque data in response to an unknown device id embedded therein. RFC 5661 only encodes device ids within the driver-specific opaque data. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Dean Hildebrand <dhildebz@umich.edu> Signed-off-by: Marc Eshel <eshel@almaden.ibm.com> Signed-off-by: Mike Sager <sager@netapp.com> Signed-off-by: Ricardo Labiaga <ricardo.labiaga@netapp.com> Signed-off-by: Tao Guo <guotao@nrchpc.ac.cn> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: ask for layouttypes during v4 fsinfo callAndy Adamson2010-10-241-0/+1
| | | | | | | | | | | | | | | This information will be used to determine which layout driver, if any, to use for subsequent IO on this filesystem. Each driver is assigned an integer id, with 0 reserved to indicate no driver. The server can in theory return multiple ids. However, our current client implementation only notes the first entry and ignores the rest. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* Revalidate caches on lockRicardo Labiaga2010-10-241-0/+1
| | | | | | | | | | | | | | | | Instead of blindly zapping the caches, attempt to revalidate them if the server has indicated that it uses high resolution timestamps. NFSv4 should be able to always revalidate the cache since the protocol requires the update of the change attribute on modification of the data. In reality, there are servers (the Linux NFS server for example) that do not obey this requirement and use ctime as the basis for change attribute. Long term, the server needs to be fixed. At this time, and to be on the safe side, continue zapping caches if the server indicates that it does not have a high resolution timestamp. Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Readdir plus in v4Bryan Schumaker2010-10-231-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | By requsting more attributes during a readdir, we can mimic the readdir plus operation that was in NFSv3. To test, I ran the command `ls -lU --color=none` on directories with various numbers of files. Without readdir plus, I see this: n files | 100 | 1,000 | 10,000 | 100,000 | 1,000,000 --------+-----------+-----------+-----------+-----------+---------- real | 0m00.153s | 0m00.589s | 0m05.601s | 0m56.691s | 9m59.128s user | 0m00.007s | 0m00.007s | 0m00.077s | 0m00.703s | 0m06.800s sys | 0m00.010s | 0m00.070s | 0m00.633s | 0m06.423s | 1m10.005s access | 3 | 1 | 1 | 4 | 31 getattr | 2 | 1 | 1 | 1 | 1 lookup | 104 | 1,003 | 10,003 | 100,003 | 1,000,003 readdir | 2 | 16 | 158 | 1,575 | 15,749 total | 111 | 1,021 | 10,163 | 101,583 | 1,015,784 With readdir plus enabled, I see this: n files | 100 | 1,000 | 10,000 | 100,000 | 1,000,000 --------+-----------+-----------+-----------+-----------+---------- real | 0m00.115s | 0m00.206s | 0m01.079s | 0m12.521s | 2m07.528s user | 0m00.003s | 0m00.003s | 0m00.040s | 0m00.290s | 0m03.296s sys | 0m00.007s | 0m00.020s | 0m00.120s | 0m01.357s | 0m17.556s access | 3 | 1 | 1 | 1 | 7 getattr | 2 | 1 | 1 | 1 | 1 lookup | 4 | 3 | 3 | 3 | 3 readdir | 6 | 62 | 630 | 6,300 | 62,993 total | 15 | 67 | 635 | 6,305 | 63,004 Readdir plus disabled has about a 16x increase in the number of rpc calls and is 4 - 5 times slower on large directories. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: readdir with vmapped pagesBryan Schumaker2010-10-231-1/+1
| | | | | | | | | We can use vmapped pages to read more information from the network at once. This will reduce the number of calls needed to complete a readdir. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> [trondmy: Added #include for linux/vmalloc.h> in fs/nfs/dir.c] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: decode_dirent should use an xdr_streamBryan Schumaker2010-10-231-1/+1
| | | | | | | | Convert nfs*xdr.c to use an xdr stream in decode_dirent. This will prevent a kernel oops that has been occuring when reading a vmapped page. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4.1: keep seq_res.sr_slot as pointer rather than an indexBenny Halevy2010-09-241-1/+1
| | | | | | | | | | | Having to explicitly initialize sr_slotid to NFS4_MAX_SLOT_TABLE resulted in numerous bugs. Keeping the current slot as a pointer to the slot table is more straight forward and robust as it's implicitly set up to NULL wherever the seq_res member is initialized to zeroes. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs: make sillyrename an async operationJeff Layton2010-09-171-0/+2
| | | | | | | | | | | | | | | | | | A synchronous rename can be interrupted by a SIGKILL. If that happens during a sillyrename operation, it's possible for the rename call to be sent to the server, but the task exits before processing the reply. If this happens, the sillyrenamed file won't get cleaned up during nfs_dentry_iput and the server is left with a dangling .nfs* file hanging around. Fix this problem by turning sillyrename into an asynchronous operation and have the task doing the sillyrename just wait on the reply. If the task is killed before the sillyrename completes, it'll still proceed to completion. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs: standardize the rename response containerJeff Layton2010-09-171-14/+9
| | | | | | | | | | Right now, v3 and v4 have their own variants. Create a standard struct that will work for v3 and v4. v2 doesn't get anything but a simple error and so isn't affected by this. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs: standardize the rename args containerJeff Layton2010-09-171-27/+12
| | | | | | | | | | Each NFS version has its own version of the rename args container. Standardize them on a common one that's identical to the one NFSv4 uses. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Add an 'open_context' element to struct nfs_rpc_opsTrond Myklebust2010-09-171-0/+4
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Clean up nfs4_proc_create()Trond Myklebust2010-09-171-1/+1
| | | | | | | | Remove all remaining references to the struct nameidata from the low level NFS layers. Again pass down a partially initialised struct nfs_open_context when we want to do atomic open+create. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Add support for the RELEASE_LOCKOWNER operationTrond Myklebust2010-07-301-0/+4
| | | | | | | This is needed by NFSv4.0 servers in order to keep the number of locking stateids at a manageable level. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Ensure that we track the NFSv4 lock state in read/write requests.Trond Myklebust2010-07-301-0/+2
| | | | | | | This patch fixes bugzilla entry 14501: https://bugzilla.kernel.org/show_bug.cgi?id=14501 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv41: Clean up exclusive createTrond Myklebust2010-06-221-2/+4
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Clean up the NFSv4 setclientid operationTrond Myklebust2010-05-141-0/+5
| | | | | Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Reduce stack footprint of nfs_proc_remove()Trond Myklebust2010-05-141-1/+1
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* Merge branch 'for-2.6.33' of git://linux-nfs.org/~bfields/linuxLinus Torvalds2009-12-161-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-2.6.33' of git://linux-nfs.org/~bfields/linux: (42 commits) nfsd: remove pointless paths in file headers nfsd: move most of nfsfh.h to fs/nfsd nfsd: remove unused field rq_reffh nfsd: enable V4ROOT exports nfsd: make V4ROOT exports read-only nfsd: restrict filehandles accepted in V4ROOT case nfsd: allow exports of symlinks nfsd: filter readdir results in V4ROOT case nfsd: filter lookup results in V4ROOT case nfsd4: don't continue "under" mounts in V4ROOT case nfsd: introduce export flag for v4 pseudoroot nfsd: let "insecure" flag vary by pseudoflavor nfsd: new interface to advertise export features nfsd: Move private headers to source directory vfs: nfsctl.c un-used nfsd #includes lockd: Remove un-used nfsd headers #includes s390: remove un-used nfsd #includes sparc: remove un-used nfsd #includes parsic: remove un-used nfsd #includes compat.c: Remove dependence on nfsd private headers ...
| * nfsd: Fix independence of a few nfsd related headersBoaz Harrosh2009-12-141-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | An header should be compilation independent, .i.e pull in any header who's declarations are directly used by this header. And not let users re-include all it's dependencies all over again. [At the end of the day what's the use of a header if it does not have more then one user?] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* | nfs41: RECLAIM_COMPLETE XDR functionalityRicardo Labiaga2009-12-051-0/+10
| | | | | | | | | | | | | | | | | | | | XDR encoding and decoding for RECLAIM_COMPLETE. Implements the necessary encoding to indicate reclaim complete for the entire client. In the future, it can be extended to provide reclaim complete functionality for a single file system after migration. Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | nfs41: check SEQUENCE status flagAlexandros Batsakis2009-12-051-0/+1
| | | | | | | | | | | | | | | | | | | | the server can indicate a number of error conditions by setting the appropriate bits in the SEQUENCE operation. The client re-establishes state with the server when it receives one of those, with the action depending on the specific case. Signed-off-by: Alexandros Batsakis <batsakis@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | NFS: reorder nfs4_sequence_regs to remove 8 bytes of padding on 64 bitsRichard Kennedy2009-12-031-1/+1
|/ | | | | | | | | | | | | | | | | reorder nfs4_sequence_args to remove 8 bytes of padding on 64 bit builds. The size of this structure drops to 24 bytes from 32 and reduces the text size of nfs.ko. On my x86_64 size reports text data bss 2.6.32-rc5 200996 8512 432 209940 33414 nfs.ko +patch 200884 8512 432 209828 333a4 nfs.ko Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: create_session operationAndy Adamson2009-06-171-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement the create_session operation conforming to http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-26 Set the real fore channel max operations to preserve server resources. Note: If the server returns < NFS4_MAX_OPS, the client will very soon get an NFS4ERR_TOO_MANY_OPS. A later patch will handle this. Set the max_rqst_sz and max_resp_sz to PAGE_SIZE - we preallocate the buffers. Set the back channel max_resp_sz_cached to zero to force the client to always set csa_cachethis to FALSE because the current implementation of the back channel DRC only supports caching the CB_SEQUENCE operation. The client back channel server supports one slot, and desires 2 operations per compound. Signed-off-by: Ricardo Labiaga <ricardo.labiaga@netapp.com> Signed-off-by: Andy Adamson<andros@umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: remove extraneous rpc_clnt pointer] Use the struct nfs_client cl_rpcclient. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: nfs4_init_channel_attrs, just use nfs41_create_session_args] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: use rsize and wsize for session channel attributes] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: set channel max operations] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: set back channel attributes] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: obliterate nfs4_adjust_channel_attrs] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: have create_session work on nfs_client] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: move CONFIG_NFS_V4_1 endif] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: pass *session in seq_args and seq_res] [moved nfs4_init_slot_table definition here] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: use kcalloc to allocate slot table] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> [nfs41: fix Xcode_create_session's xdr Xcoding pointer type] [nfs41: refactor decoding of channel attributes] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
* nfs41: get_lease_timeAndy Adamson2009-06-171-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | get_lease_time uses the FSINFO rpc operation to get the lease time attribute. nfs4_get_lease_time() is only called from the state manager on session setup so don't recover from clientid or sequence level errors. We do need to recover from NFS4ERR_DELAY or NFS4ERR_GRACE. Use NFS4_POLL_RETRY_MIN - the Linux server returns NFS4ERR_DELAY when an upcall is needed to resolve an uncached export referenced by a file handle. [nfs41: sequence res use slotid] Signed-off-by: Andy Adamson<andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: remove extraneous rpc_clnt pointer] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: have get_lease_time work on nfs_client] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: get_lease_time recover from NFS4ERR_DELAY] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: pass *session in seq_args and seq_res] [define nfs4_get_lease_time_{args,res}] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs41: exchange_id operationBenny Halevy2009-06-171-0/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement the exchange_id operation conforming to http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-26 Unlike NFSv4.0, NFSv4.1 requires machine credentials. RPC_AUTH_GSS machine credentials will be passed into the kernel at mount time to be available for the exchange_id operation. RPC_AUTH_UNIX root mounts can use the UNIX root credential. Store the root credential in the nfs_client struct. Without a credential, NFSv4.1 state renewal fails. [nfs41: establish clientid via exchange id only if cred != NULL] Signed-off-by: Andy Adamson<andros@umich.edu> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: move nfstime4 from under CONFIG_NFS_V4_1] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: do not wait a lease time in exchange id] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: pass *session in seq_args and seq_res] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> [nfs41: Ignoring impid in decode_exchange_id is missing a READ_BUF] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: fix Xcode_exchange_id's xdr Xcoding pointer type] [nfs41: get rid of unused struct nfs41_exchange_id_res members] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
* nfs41: setup_sequence methodAndy Adamson2009-06-171-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allocate a slot in the session slot table and set the sequence op arguments. Called at the rpc prepare stage. Add a status to nfs41_sequence_res, initialize it to one so that we catch rpc level failures which do not go through decode_sequence which sets the new status field. Note that upon an rpc level failure, we don't know if the server processed the sequence operation or not. Proceed as if the server did process the sequence operation. Signed-off-by: Rahul Iyer <iyer@netapp.com> [nfs41: sequence args use slotid] [nfs41: find slot return slotid] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: remove SEQ4_STATUS_USE_TK_STATUS] As per 11-14-08 review [move extern declaration from nfs41: sequence setup/done support] [removed sa_session definition, changed sa_cache_this into a u8 to reduce footprint] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfs41: rpc_sleep_on slot_tbl_waitq must be called under slot_tbl_lock] Otherwise there's a race (we've hit) with nfs4_free_slot where nfs41_setup_sequence sees a full slot table, unlocks slot_tbl_lock, nfs4_free_slots happen concurrently and call rpc_wake_up_next where there's nobody to wake up yet, context goes back to nfs41_setup_sequence which goes to sleep when the slot table is actually empty now and there's no-one to wake it up anymore. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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