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2014-07-13pnfs/filelayout: fix race between mark_request_commit and scan_commit_listsPeng Tao1-18/+25
We need to hold cinfo lock while setting bucket->wlseg and adding req to nwritten list at the same time. Otherwise there might be a window where nwritten list is empty yet we set bucket->wlseg, in which case ff_layout_scan_ds_commit_list() may end up clearing bucket->wlseg incorrectly, casuing client to oops later on. This was found when testing flexfile layout but filelayout has the same problem. Signed-off-by: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-07-13NFSv4: Fix OPEN w/create access mode checkingTrond Myklebust1-5/+13
POSIX states that open("foo", O_CREAT|O_RDONLY, 000) should succeed if the file "foo" does not already exist. With the current NFS client, it will fail with an EACCES error because of the permissions checks in nfs4_opendata_access(). Fix is to turn that test off if the server says that we created the file. Reported-by: "Frank S. Filz" <ffilzlnx@mindspring.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-07-13NFS: Remove 2 unused variablesTrond Myklebust2-4/+0
Cc: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-07-13nfs: handle multiple reqs in nfs_wb_page_cancelWeston Andros Adamson1-20/+21
Use nfs_lock_and_join_requests to merge all subrequests into the head request - this cancels and dereferences all subrequests. Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-07-13nfs: handle multiple reqs in nfs_page_async_flushWeston Andros Adamson3-25/+235
Change nfs_find_and_lock_request so nfs_page_async_flush can handle multiple requests in a page. There is only one request for a page the first time nfs_page_async_flush is called, but if a write or commit fails, async_flush is called again and there may be multiple requests associated with the page. The solution is to merge all the requests in a page group into a single request before calling nfs_pageio_add_request. Rename nfs_find_and_lock_request to nfs_lock_and_join_requests and change it to first lock all requests for the page, then cancel and merge all subrequests into the head request. Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-07-13nfs: change find_request to find_head_requestWeston Andros Adamson1-9/+24
nfs_page_find_request_locked* should find the head request for that page. Rename the functions and add comments to make this clear, and fix a bug that could return a subrequest when page_private isn't set on the page. Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-07-13nfs: nfs_page should take a ref on the head reqWeston Andros Adamson1-0/+10
nfs_pages that aren't the the head of a group must take a reference on the head as long as ->wb_head is set to it. This stops the head from hitting a refcount of 0 while there is still an active nfs_page for the page group. This avoids kref warnings in the writeback code when the page group head is found and referenced. Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-07-13nfs: mark nfs_page reqs with flag for extra refWeston Andros Adamson2-3/+9
Change the use of PG_INODE_REF - set it when taking extra reference on subrequests and take care to only release once for each request. Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-07-08nfs: only show Posix ACLs in listxattr if actually presentChristoph Hellwig2-2/+45
The big ACL switched nfs to use generic_listxattr, which calls all existing ->list handlers. Add a custom .listxattr implementation that only lists the ACLs if they actually are present on the given inode. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Philippe Troin <phil@fifi.org> Tested-by: Philippe Troin <phil@fifi.org> Fixes: 013cdf1088d7 (nfs: use generic posix ACL infrastructure ...) Cc: stable@vger.kernel.org # 3.14+ Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-07-08nfs: check hostname in nfs_get_clientPeng Tao1-2/+7
We reference cl_hostname in many places. Add a check to make sure it exists. Signed-off-by: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-07-08nfsv4: set hostname when creating nfsv4 ds connectionPeng Tao1-0/+5
We reference cl_hostname in many places for debugging purpose. So make it useful by setting hostname when calling nfs_get_client. Signed-off-by: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-26FS/NFS: replace count*size kzalloc by kcallocFabian Frederick2-2/+2
kcalloc manages count*sizeof overflow. Cc: Trond Myklebust <trond.myklebust@primarydata.com> Cc: linux-nfs@vger.kernel.org Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-26nfs: get rid of duplicate dprintkWeston Andros Adamson1-6/+0
This was introduced by a merge error with my recent pgio patchset. Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-25nfs: Fix unused variable errorAnna Schumaker1-3/+2
inode is unused when CONFIG_SUNRPC_DEBUG=n. Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-25nfs: remove unneeded EXPORTsWeston Andros Adamson1-2/+0
EXPORT_GPLs of nfs_pageio_add_request and nfs_pageio_complete aren't needed anymore. Suggested-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-25pnfs: clean up *_resend_to_mdsWeston Andros Adamson4-68/+45
Clean up pnfs_read_done_resend_to_mds and pnfs_write_done_resend_to_mds: - instead of passing all arguments from a nfs_pgio_header, just pass the header - share the common code Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-25nfs: remove pgio_header refcount, related cleanupWeston Andros Adamson2-31/+11
The refcounting on nfs_pgio_header was related to there being (possibly) more than one nfs_pgio_data. Now that nfs_pgio_data has been merged into nfs_pgio_header, there is no reason to do this ref counting. Just call the completion callback on nfs_pgio_release/nfs_pgio_error. Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-25nfs: remove unused writeverf codeWeston Andros Adamson6-43/+18
Remove duplicate writeverf structure from merge of nfs_pgio_header and nfs_pgio_data and remove writeverf related flags and logic to handle more than one RPC per nfs_pgio_header. Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-25nfs: merge nfs_pgio_data into _headerWeston Andros Adamson17-456/+434
struct nfs_pgio_data only exists as a member of nfs_pgio_header, but is passed around everywhere, because there used to be multiple _data structs per _header. Many of these functions then use the _data to find a pointer to the _header. This patch cleans this up by merging the nfs_pgio_data structure into nfs_pgio_header and passing nfs_pgio_header around instead. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-25nfs: rename members of nfs_pgio_dataWeston Andros Adamson4-19/+23
Rename "verf" to "writeverf" and "pages" to "page_array" to prepare for merge of nfs_pgio_data and nfs_pgio_header. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-25nfs: move nfs_pgio_data and remove nfs_rw_headerWeston Andros Adamson6-95/+53
nfs_rw_header was used to allocate an nfs_pgio_header along with an nfs_pgio_data, because a _header would need at least one _data. Now there is only ever one nfs_pgio_data for each nfs_pgio_header -- move it to nfs_pgio_header and get rid of nfs_rw_header. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-25NFSv4: test SECINFO RPC_AUTH_GSS pseudoflavors for supportAndy Adamson3-45/+57
Fix nfs4_negotiate_security to create an rpc_clnt used to test each SECINFO returned pseudoflavor. Check credential creation (and gss_context creation) which is important for RPC_AUTH_GSS pseudoflavors which can fail for multiple reasons including mis-configuration. Don't call nfs4_negotiate in nfs4_submount as it was just called by nfs4_proc_lookup_mountpoint (nfs4_proc_lookup_common) Signed-off-by: Andy Adamson <andros@netapp.com> [Trond: fix corrupt return value from nfs_find_best_sec()] Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-25NFS Return -EPERM if no supported or matching SECINFO flavorAndy Adamson1-7/+4
Do not return RPC_AUTH_UNIX if SEINFO reply tests fail. This prevents an infinite loop of NFS4ERR_WRONGSEC for non RPC_AUTH_UNIX mounts. Without this patch, a mount with no sec= option to a server that does not include RPC_AUTH_UNIX in the SECINFO return can be presented with an attemtp to use RPC_AUTH_UNIX which will result in an NFS4ERR_WRONG_SEC which will prompt the SECINFO call which will again try RPC_AUTH_UNIX.... Signed-off-by: Andy Adamson <andros@netapp.com> Tested-By: Steve Dickson <steved@redhat.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-25NFS check the return of nfs4_negotiate_security in nfs4_submountAndy Adamson1-2/+5
Signed-off-by: Andy Adamson <andros@netapp.com> Tested-By: Steve Dickson <steved@redhat.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-25NFS: Don't mark the data cache as invalid if it has been flushedTrond Myklebust1-35/+40
Now that we have functions such as nfs_write_pageuptodate() that use the cache_validity flags to check if the data cache is valid or not, it is a little more important to keep the flags in sync with the state of the data cache. In particular, we'd like to ensure that if the data cache is empty, we don't start marking it as needing revalidation. Reported-by: Scott Mayhew <smayhew@redhat.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-25NFS: Clear NFS_INO_REVAL_PAGECACHE when we update the file sizeTrond Myklebust1-0/+1
In nfs_update_inode(), if the change attribute is seen to change on the server, then we set NFS_INO_REVAL_PAGECACHE in order to make sure that we check the file size. However, if we also update the file size in the same function, we don't need to check it again. So make sure that we clear the NFS_INO_REVAL_PAGECACHE that was set earlier. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-25nfs: Fix cache_validity check in nfs_write_pageuptodate()Scott Mayhew1-1/+3
NFS_INO_INVALID_DATA cannot be ignored, even if we have a delegation. We're still having some problems with data corruption when multiple clients are appending to a file and those clients are being granted write delegations on open. To reproduce: Client A: vi /mnt/`hostname -s` while :; do echo "XXXXXXXXXXXXXXX" >>/mnt/file; sleep $(( $RANDOM % 5 )); done Client B: vi /mnt/`hostname -s` while :; do echo "YYYYYYYYYYYYYYY" >>/mnt/file; sleep $(( $RANDOM % 5 )); done What's happening is that in nfs_update_inode() we're recognizing that the file size has changed and we're setting NFS_INO_INVALID_DATA accordingly, but then we ignore the cache_validity flags in nfs_write_pageuptodate() because we have a delegation. As a result, in nfs_updatepage() we're extending the write to cover the full page even though we've not read in the data to begin with. Signed-off-by: Scott Mayhew <smayhew@redhat.com> Cc: <stable@vger.kernel.org> # v3.11+ Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-12Merge branch 'for-linus' of ↵Linus Torvalds4-281/+126
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs updates from Al Viro: "This the bunch that sat in -next + lock_parent() fix. This is the minimal set; there's more pending stuff. In particular, I really hope to get acct.c fixes merged this cycle - we need that to deal sanely with delayed-mntput stuff. In the next pile, hopefully - that series is fairly short and localized (kernel/acct.c, fs/super.c and fs/namespace.c). In this pile: more iov_iter work. Most of prereqs for ->splice_write with sane locking order are there and Kent's dio rewrite would also fit nicely on top of this pile" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (70 commits) lock_parent: don't step on stale ->d_parent of all-but-freed one kill generic_file_splice_write() ceph: switch to iter_file_splice_write() shmem: switch to iter_file_splice_write() nfs: switch to iter_splice_write_file() fs/splice.c: remove unneeded exports ocfs2: switch to iter_file_splice_write() ->splice_write() via ->write_iter() bio_vec-backed iov_iter optimize copy_page_{to,from}_iter() bury generic_file_aio_{read,write} lustre: get rid of messing with iovecs ceph: switch to ->write_iter() ceph_sync_direct_write: stop poking into iov_iter guts ceph_sync_read: stop poking into iov_iter guts new helper: copy_page_from_iter() fuse: switch to ->write_iter() btrfs: switch to ->write_iter() ocfs2: switch to ->write_iter() xfs: switch to ->write_iter() ...
2014-06-12nfs: switch to iter_splice_write_file()Al Viro3-34/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-06-11Merge tag 'nfs-for-3.16-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds29-1203/+1316
Pull NFS client updates from Trond Myklebust: "Highlights include: - massive cleanup of the NFS read/write code by Anna and Dros - support multiple NFS read/write requests per page in order to deal with non-page aligned pNFS striping. Also cleans up the r/wsize < page size code nicely. - stable fix for ensuring inode is declared uptodate only after all the attributes have been checked. - stable fix for a kernel Oops when remounting - NFS over RDMA client fixes - move the pNFS files layout driver into its own subdirectory" * tag 'nfs-for-3.16-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (79 commits) NFS: populate ->net in mount data when remounting pnfs: fix lockup caused by pnfs_generic_pg_test NFSv4.1: Fix typo in dprintk NFSv4.1: Comment is now wrong and redundant to code NFS: Use raw_write_seqcount_begin/end int nfs4_reclaim_open_state xprtrdma: Disconnect on registration failure xprtrdma: Remove BUG_ON() call sites xprtrdma: Avoid deadlock when credit window is reset SUNRPC: Move congestion window constants to header file xprtrdma: Reset connection timeout after successful reconnect xprtrdma: Use macros for reconnection timeout constants xprtrdma: Allocate missing pagelist xprtrdma: Remove Tavor MTU setting xprtrdma: Ensure ia->ri_id->qp is not NULL when reconnecting xprtrdma: Reduce the number of hardway buffer allocations xprtrdma: Limit work done by completion handler xprtrmda: Reduce calls to ib_poll_cq() in completion handlers xprtrmda: Reduce lock contention in completion handlers xprtrdma: Split the completion queue xprtrdma: Make rpcrdma_ep_destroy() return void ...
2014-06-10Merge branch 'for-3.16' of git://linux-nfs.org/~bfields/linuxLinus Torvalds1-1/+1
Pull nfsd updates from Bruce Fields: "The largest piece is a long-overdue rewrite of the xdr code to remove some annoying limitations: for example, there was no way to return ACLs larger than 4K, and readdir results were returned only in 4k chunks, limiting performance on large directories. Also: - part of Neil Brown's work to make NFS work reliably over the loopback interface (so client and server can run on the same machine without deadlocks). The rest of it is coming through other trees. - cleanup and bugfixes for some of the server RDMA code, from Steve Wise. - Various cleanup of NFSv4 state code in preparation for an overhaul of the locking, from Jeff, Trond, and Benny. - smaller bugfixes and cleanup from Christoph Hellwig and Kinglong Mee. Thanks to everyone! This summer looks likely to be busier than usual for knfsd. Hopefully we won't break it too badly; testing definitely welcomed" * 'for-3.16' of git://linux-nfs.org/~bfields/linux: (100 commits) nfsd4: fix FREE_STATEID lockowner leak svcrdma: Fence LOCAL_INV work requests svcrdma: refactor marshalling logic nfsd: don't halt scanning the DRC LRU list when there's an RC_INPROG entry nfs4: remove unused CHANGE_SECURITY_LABEL nfsd4: kill READ64 nfsd4: kill READ32 nfsd4: simplify server xdr->next_page use nfsd4: hash deleg stateid only on successful nfs4_set_delegation nfsd4: rename recall_lock to state_lock nfsd: remove unneeded zeroing of fields in nfsd4_proc_compound nfsd: fix setting of NFS4_OO_CONFIRMED in nfsd4_open nfsd4: use recall_lock for delegation hashing nfsd: fix laundromat next-run-time calculation nfsd: make nfsd4_encode_fattr static SUNRPC/NFSD: Remove using of dprintk with KERN_WARNING nfsd: remove unused function nfsd_read_file nfsd: getattr for FATTR4_WORD0_FILES_AVAIL needs the statfs buffer NFSD: Error out when getting more than one fsloc/secinfo/uuid NFSD: Using type of uint32_t for ex_nflavors instead of int ...
2014-06-10NFS: populate ->net in mount data when remountingMateusz Guzik1-0/+1
Otherwise the kernel oopses when remounting with IPv6 server because net is dereferenced in dev_get_by_name. Use net ns of current thread so that dev_get_by_name does not operate on foreign ns. Changing the address is prohibited anyway so this should not affect anything. Signed-off-by: Mateusz Guzik <mguzik@redhat.com> Cc: linux-nfs@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org # 3.4+ Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-10pnfs: fix lockup caused by pnfs_generic_pg_testWeston Andros Adamson1-14/+18
end_offset and req_offset both return u64 - avoid casting to u32 until it's needed, when it's less than the (u32) size returned by nfs_generic_pg_test. Also, fix the comments in pnfs_generic_pg_test. Running the cthon04 special tests caused this lockup in the "write/read at 2GB, 4GB edges" test when running against a file layout server: BUG: soft lockup - CPU#0 stuck for 22s! [bigfile2:823] Modules linked in: nfs_layout_nfsv41_files rpcsec_gss_krb5 nfsv4 nfs fscache ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_mangle ip6table_filter ip6_tables iptable_nat nf_nat_ipv4 nf_nat iptable_mangle ppdev crc32c_intel aesni_intel aes_x86_64 glue_helper lrw gf128mul ablk_helper cryptd serio_raw e1000 shpchp i2c_piix4 i2c_core parport_pc parport nfsd auth_rpcgss oid_registry exportfs nfs_acl lockd sunrpc btrfs xor zlib_deflate raid6_pq mptspi scsi_transport_spi mptscsih mptbase ata_generic floppy autofs4 irq event stamp: 205958 hardirqs last enabled at (205957): [<ffffffff814a62dc>] restore_args+0x0/0x30 hardirqs last disabled at (205958): [<ffffffff814ad96a>] apic_timer_interrupt+0x6a/0x80 softirqs last enabled at (205956): [<ffffffff8103ffb2>] __do_softirq+0x1ea/0x2ab softirqs last disabled at (205951): [<ffffffff8104026d>] irq_exit+0x44/0x9a CPU: 0 PID: 823 Comm: bigfile2 Not tainted 3.15.0-rc1-branch-pgio_plus+ #3 Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/31/2013 task: ffff8800792ec480 ti: ffff880078c4e000 task.ti: ffff880078c4e000 RIP: 0010:[<ffffffffa02ce51f>] [<ffffffffa02ce51f>] nfs_page_group_unlock+0x3e/0x4b [nfs] RSP: 0018:ffff880078c4fab0 EFLAGS: 00000202 RAX: 0000000000000fff RBX: ffff88006bf83300 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff88006bf83300 RBP: ffff880078c4fab8 R08: 0000000000000001 R09: 0000000000000000 R10: ffffffff8249840c R11: 0000000000000000 R12: 0000000000000035 R13: ffff88007ffc72d8 R14: 0000000000000001 R15: 0000000000000000 FS: 00007f45f11b7740(0000) GS:ffff88007f200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3a8cb632d0 CR3: 000000007931c000 CR4: 00000000001407f0 Stack: ffff88006bf832c0 ffff880078c4fb00 ffffffffa02cec22 ffff880078c4fad8 00000fff810f9d99 ffff880078c4fca0 ffff88006bf832c0 ffff88006bf832c0 ffff880078c4fca0 ffff880078c4fd60 ffff880078c4fb28 ffffffffa02cee34 Call Trace: [<ffffffffa02cec22>] __nfs_pageio_add_request+0x298/0x34f [nfs] [<ffffffffa02cee34>] nfs_pageio_add_request+0x1f/0x42 [nfs] [<ffffffffa02d1722>] nfs_do_writepage+0x1b5/0x1e4 [nfs] [<ffffffffa02d1764>] nfs_writepages_callback+0x13/0x25 [nfs] [<ffffffffa02d1751>] ? nfs_do_writepage+0x1e4/0x1e4 [nfs] [<ffffffff810eb32d>] write_cache_pages+0x254/0x37f [<ffffffffa02d1751>] ? nfs_do_writepage+0x1e4/0x1e4 [nfs] [<ffffffff8149cf9e>] ? printk+0x54/0x56 [<ffffffff810eacca>] ? __set_page_dirty_nobuffers+0x22/0xe9 [<ffffffffa016d864>] ? put_rpccred+0x38/0x101 [sunrpc] [<ffffffffa02d1ae1>] nfs_writepages+0xb4/0xf8 [nfs] [<ffffffff810ec59c>] do_writepages+0x21/0x2f [<ffffffff810e36e8>] __filemap_fdatawrite_range+0x55/0x57 [<ffffffff810e374a>] filemap_write_and_wait_range+0x2d/0x5b [<ffffffffa030ba0a>] nfs4_file_fsync+0x3a/0x98 [nfsv4] [<ffffffff8114ee3c>] vfs_fsync_range+0x18/0x20 [<ffffffff810e40c2>] generic_file_aio_write+0xa7/0xbd [<ffffffffa02c5c6b>] nfs_file_write+0xf0/0x170 [nfs] [<ffffffff81129215>] do_sync_write+0x59/0x78 [<ffffffff8112956c>] vfs_write+0xab/0x107 [<ffffffff81129c8b>] SyS_write+0x49/0x7f [<ffffffff814acd12>] system_call_fastpath+0x16/0x1b Reported-by: Anna Schumaker <Anna.Schumaker@netapp.com> Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-09NFSv4.1: Fix typo in dprintkTom Haynes1-1/+1
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-09NFSv4.1: Comment is now wrong and redundant to codeTom Haynes1-4/+1
The save of the write offset was removed some time ago, so that part of the comment is bogus. The remainder is pretty self-evident. So off with it! Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-07nfs4: remove unused CHANGE_SECURITY_LABELJ. Bruce Fields1-1/+1
This constant has the wrong value. And we don't use it. And it's been removed from the 4.2 spec anyway. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2014-06-07nfs: convert use of typedef ctl_table to struct ctl_tableJoe Perches2-6/+6
This typedef is unnecessary and should just be removed. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-05NFS: Use raw_write_seqcount_begin/end int nfs4_reclaim_open_stateTrond Myklebust1-3/+3
The addition of lockdep code to write_seqcount_begin/end has lead to a bunch of false positive claims of ABBA deadlocks with the so_lock spinlock. Audits show that this simply cannot happen because the read side code does not spin while holding so_lock. Cc: <stable@vger.kernel.org> # 3.13.x Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-06-04Merge tag 'locks-v3.16' of git://git.samba.org/jlayton/linux into nextLinus Torvalds1-4/+0
Pull file locking changes from Jeff Layton: "Pretty quiet on the file-locking related front this cycle. Just some small cleanups and the addition of some tracepoints in the lease handling code" * tag 'locks-v3.16' of git://git.samba.org/jlayton/linux: locks: add some tracepoints in the lease handling code fs/locks.c: replace seq_printf by seq_puts locks: ensure that fl_owner is always initialized properly in flock and lease codepaths
2014-06-02locks: ensure that fl_owner is always initialized properly in flock and ↵Jeff Layton1-4/+0
lease codepaths Currently, the fl_owner isn't set for flock locks. Some filesystems use byte-range locks to simulate flock locks and there is a common idiom in those that does: fl->fl_owner = (fl_owner_t)filp; fl->fl_start = 0; fl->fl_end = OFFSET_MAX; Since flock locks are generally "owned" by the open file description, move this into the common flock lock setup code. The fl_start and fl_end fields are already set appropriately, so remove the unneeded setting of that in flock ops in those filesystems as well. Finally, the lease code also sets the fl_owner as if they were owned by the process and not the open file description. This is incorrect as leases have the same ownership semantics as flock locks. Set them the same way. The lease code doesn't actually use the fl_owner value for anything, so this is more for consistency's sake than a bugfix. Reported-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Jeff Layton <jlayton@poochiereds.net> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> (Staging portion) Acked-by: J. Bruce Fields <bfields@fieldses.org>
2014-05-30Push the file layout driver into a subdirectoryTom Haynes5-12/+15
The object and block layouts already exist in their own subdirectories. This patch completes the set! Note that as a layout denotes nfs4 already, I stripped that prefix out of the file names. Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com> Acked-by: Jeff Layton <jlayton@poochiereds.net> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-05-30pNFS: Handle allocation errors correctly in objlayout_alloc_layout_hdr()Trond Myklebust1-4/+4
Return the NULL pointer when the allocation fails. Cc: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-05-30pNFS: Handle allocation errors correctly in filelayout_alloc_layout_hdr()Trond Myklebust1-1/+1
Return the NULL pointer when the allocation fails. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Cc: <stable@vger.kernel.org> # 3.5.x Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-05-30nfs: Apply NFS_MOUNT_CMP_FLAGMASK to nfs_compare_remount_data()Scott Mayhew1-13/+13
Those flags are obsolete and checking them can incorrectly cause remount operations to fail. Signed-off-by: Scott Mayhew <smayhew@redhat.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-05-30NFSv4: Use error handler on failed GETATTR with successful OPENAndy Adamson1-1/+1
Place the call to resend the failed GETATTR under the error handler so that when appropriate, the GETATTR is retried more than once. The server can fail the GETATTR op in the OPEN compound with a recoverable error such as NFS4ERR_DELAY. In the case of an O_EXCL open, the server has created the file, so a retrans of the OPEN call will fail with NFS4ERR_EXIST. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-05-29NFS: Fix a potential busy wait in nfs_page_group_lockTrond Myklebust1-10/+9
We cannot allow nfs_page_group_lock to use TASK_KILLABLE here, since the loop would cause a busy wait if somebody kills the task. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-05-29NFS: Fix error handling in __nfs_pageio_add_requestTrond Myklebust1-0/+6
Handle the case where nfs_create_request() returns an error. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-05-29nfs: support page groups in nfs_read_completionWeston Andros Adamson1-7/+17
nfs_read_completion relied on the fact that there was a 1:1 mapping of page to nfs_request, but this has now changed. Regions not covered by a request have already been zeroed elsewhere. Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-05-29pnfs: filelayout: support non page aligned layoutsWeston Andros Adamson1-32/+20
Use the new pg_test interface to adjust requests to fit in the current stripe / segment. Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-05-29pnfs: allow non page aligned pnfs layout segmentsWeston Andros Adamson1-15/+10
Remove alignment checks that would revert to MDS and change pg_test to return the max ammount left in the segment (or other pg_test call) up to size of passed request, or 0 if no space is left. Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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