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2010-09-12SUNRPC: Fix the NFSv4 and RPCSEC_GSS Kconfig dependenciesTrond Myklebust1-0/+1
The NFSv4 client's callback server calls svc_gss_principal(), which is defined in the auth_rpcgss.ko The NFSv4 server has the same dependency, and in addition calls svcauth_gss_flavor(), gss_mech_get_by_pseudoflavor(), gss_pseudoflavor_to_service() and gss_mech_put() from the same module. The module auth_rpcgss itself has no dependencies aside from sunrpc, so we only need to select RPCSEC_GSS. Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-12statfs() gives ESTALE errorMenyhart Zoltan1-0/+8
Hi, An NFS client executes a statfs("file", &buff) call. "file" exists / existed, the client has read / written it, but it has already closed it. user_path(pathname, &path) looks up "file" successfully in the directory-cache and restarts the aging timer of the directory-entry. Even if "file" has already been removed from the server, because the lookupcache=positive option I use, keeps the entries valid for a while. nfs_statfs() returns ESTALE if "file" has already been removed from the server. If the user application repeats the statfs("file", &buff) call, we are stuck: "file" remains young forever in the directory-cache. Signed-off-by: Zoltan Menyhart <Zoltan.Menyhart@bull.net> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@kernel.org
2010-09-12NFS: Fix a typo in nfs_sockaddr_match_ipaddr6Trond Myklebust1-1/+1
Reported-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@kernel.org
2010-09-12Remove incorrect do_vfs_lock messageFabio Olive Leite1-4/+0
The do_vfs_lock function on fs/nfs/file.c is only called if NLM is not being used, via the -onolock mount option. Therefore it cannot really be "out of sync with lock manager" when the local locking function called returns an error, as there will be no corresponding call to the NLM. For details, simply check the if/else on do_setlk and do_unlk on fs/nfs/file.c. Signed-Off-By: Fabio Olive Leite <fleite@redhat.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-18Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds5-8/+22
* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: NFS: Fix an Oops in the NFSv4 atomic open code NFS: Fix the selection of security flavours in Kconfig NFS: fix the return value of nfs_file_fsync() rpcrdma: Fix SQ size calculation when memreg is FRMR xprtrdma: Do not truncate iova_start values in frmr registrations. nfs: Remove redundant NULL check upon kfree() nfs: Add "lookupcache" to displayed mount options NFS: allow close-to-open cache semantics to apply to root of NFS filesystem SUNRPC: fix NFS client over TCP hangs due to packet loss (Bug 16494)
2010-08-18NFS: Fix an Oops in the NFSv4 atomic open codeTrond Myklebust2-4/+6
Adam Lackorzynski reports: with 2.6.35.2 I'm getting this reproducible Oops: [ 110.825396] BUG: unable to handle kernel NULL pointer dereference at (null) [ 110.828638] IP: [<ffffffff811247b7>] encode_attrs+0x1a/0x2a4 [ 110.828638] PGD be89f067 PUD bf18f067 PMD 0 [ 110.828638] Oops: 0000 [#1] SMP [ 110.828638] last sysfs file: /sys/class/net/lo/operstate [ 110.828638] CPU 2 [ 110.828638] Modules linked in: rtc_cmos rtc_core rtc_lib amd64_edac_mod i2c_amd756 edac_core i2c_core dm_mirror dm_region_hash dm_log dm_snapshot sg sr_mod usb_storage ohci_hcd mptspi tg3 mptscsih mptbase usbcore nls_base [last unloaded: scsi_wait_scan] [ 110.828638] [ 110.828638] Pid: 11264, comm: setchecksum Not tainted 2.6.35.2 #1 [ 110.828638] RIP: 0010:[<ffffffff811247b7>] [<ffffffff811247b7>] encode_attrs+0x1a/0x2a4 [ 110.828638] RSP: 0000:ffff88003bf5b878 EFLAGS: 00010296 [ 110.828638] RAX: ffff8800bddb48a8 RBX: ffff88003bf5bb18 RCX: 0000000000000000 [ 110.828638] RDX: ffff8800be258800 RSI: 0000000000000000 RDI: ffff88003bf5b9f8 [ 110.828638] RBP: 0000000000000000 R08: ffff8800bddb48a8 R09: 0000000000000004 [ 110.828638] R10: 0000000000000003 R11: ffff8800be779000 R12: ffff8800be258800 [ 110.828638] R13: ffff88003bf5b9f8 R14: ffff88003bf5bb20 R15: ffff8800be258800 [ 110.828638] FS: 0000000000000000(0000) GS:ffff880041e00000(0063) knlGS:00000000556bd6b0 [ 110.828638] CS: 0010 DS: 002b ES: 002b CR0: 000000008005003b [ 110.828638] CR2: 0000000000000000 CR3: 00000000be8ef000 CR4: 00000000000006e0 [ 110.828638] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 110.828638] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 110.828638] Process setchecksum (pid: 11264, threadinfo ffff88003bf5a000, task ffff88003f232210) [ 110.828638] Stack: [ 110.828638] 0000000000000000 ffff8800bfbcf920 0000000000000000 0000000000000ffe [ 110.828638] <0> 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 110.828638] <0> 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 110.828638] Call Trace: [ 110.828638] [<ffffffff81124c1f>] ? nfs4_xdr_enc_setattr+0x90/0xb4 [ 110.828638] [<ffffffff81371161>] ? call_transmit+0x1c3/0x24a [ 110.828638] [<ffffffff813774d9>] ? __rpc_execute+0x78/0x22a [ 110.828638] [<ffffffff81371a91>] ? rpc_run_task+0x21/0x2b [ 110.828638] [<ffffffff81371b7e>] ? rpc_call_sync+0x3d/0x5d [ 110.828638] [<ffffffff8111e284>] ? _nfs4_do_setattr+0x11b/0x147 [ 110.828638] [<ffffffff81109466>] ? nfs_init_locked+0x0/0x32 [ 110.828638] [<ffffffff810ac521>] ? ifind+0x4e/0x90 [ 110.828638] [<ffffffff8111e2fb>] ? nfs4_do_setattr+0x4b/0x6e [ 110.828638] [<ffffffff8111e634>] ? nfs4_do_open+0x291/0x3a6 [ 110.828638] [<ffffffff8111ed81>] ? nfs4_open_revalidate+0x63/0x14a [ 110.828638] [<ffffffff811056c4>] ? nfs_open_revalidate+0xd7/0x161 [ 110.828638] [<ffffffff810a2de4>] ? do_lookup+0x1a4/0x201 [ 110.828638] [<ffffffff810a4733>] ? link_path_walk+0x6a/0x9d5 [ 110.828638] [<ffffffff810a42b6>] ? do_last+0x17b/0x58e [ 110.828638] [<ffffffff810a5fbe>] ? do_filp_open+0x1bd/0x56e [ 110.828638] [<ffffffff811cd5e0>] ? _atomic_dec_and_lock+0x30/0x48 [ 110.828638] [<ffffffff810a9b1b>] ? dput+0x37/0x152 [ 110.828638] [<ffffffff810ae063>] ? alloc_fd+0x69/0x10a [ 110.828638] [<ffffffff81099f39>] ? do_sys_open+0x56/0x100 [ 110.828638] [<ffffffff81027a22>] ? ia32_sysret+0x0/0x5 [ 110.828638] Code: 83 f1 01 e8 f5 ca ff ff 48 83 c4 50 5b 5d 41 5c c3 41 57 41 56 41 55 49 89 fd 41 54 49 89 d4 55 48 89 f5 53 48 81 ec 18 01 00 00 <8b> 06 89 c2 83 e2 08 83 fa 01 19 db 83 e3 f8 83 c3 18 a8 01 8d [ 110.828638] RIP [<ffffffff811247b7>] encode_attrs+0x1a/0x2a4 [ 110.828638] RSP <ffff88003bf5b878> [ 110.828638] CR2: 0000000000000000 [ 112.840396] ---[ end trace 95282e83fd77358f ]--- We need to ensure that the O_EXCL flag is turned off if the user doesn't set O_CREAT. Cc: stable@kernel.org Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-17NFS: Fix the selection of security flavours in KconfigTrond Myklebust1-1/+0
Randy Dunlap reports: ERROR: "svc_gss_principal" [fs/nfs/nfs.ko] undefined! because in fs/nfs/Kconfig, NFS_V4 selects RPCSEC_GSS_KRB5 and/or in fs/nfsd/Kconfig, NFSD_V4 selects RPCSEC_GSS_KRB5. RPCSEC_GSS_KRB5 does 5 selects, but none of these is enforced/followed by the fs/nfs[d]/Kconfig configs: select SUNRPC_GSS select CRYPTO select CRYPTO_MD5 select CRYPTO_DES select CRYPTO_CBC Reported-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: J. Bruce Fields <bfields@fieldses.org> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-13Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds3-0/+53
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: [NFS] Set CONFIG_KEYS when CONFIG_NFS_USE_KERNEL_DNS is set AFS: Implement an autocell mount capability [ver #2] DNS: If the DNS server returns an error, allow that to be cached [ver #2] NFS: Use kernel DNS resolver [ver #2] cifs: update README to include details about 'fsc' option
2010-08-12[NFS] Set CONFIG_KEYS when CONFIG_NFS_USE_KERNEL_DNS is setSteve French1-0/+1
Previous patch relied on DNS_RESOLVER setting CONFIG_KEYS but needs to be selected in NFS config when using the new DNS resolver Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> CC: David Howells <dhowells@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-08-11NFS: Use kernel DNS resolver [ver #2]Bryan Schumaker3-0/+52
Use the kernel DNS resolver to translate hostnames to IP addresses. Create a new config option to choose between the legacy DNS resolver and the new resolver. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Acked-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-08-11NFS: fix the return value of nfs_file_fsync()J. R. Okajima1-1/+1
By the commit af7fa16 2010-08-03 NFS: Fix up the fsync code close(2) became returning the non-zero value even if it went well. nfs_file_fsync() should return 0 when "status" is positive. Signed-off-by: J. R. Okajima <hooanon05@yahoo.co.jp> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-11nfs: Remove redundant NULL check upon kfree()Davidlohr Bueso1-2/+1
Signed-off-by: Davidlohr Bueso <dave@gnu.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-11param: use ops in struct kernel_param, rather than get and set fns directlyRusty Russell1-6/+5
This is more kernel-ish, saves some space, and also allows us to expand the ops without breaking all the callers who are happy for the new members to be NULL. The few places which defined their own param types are changed to the new scheme (more which crept in recently fixed in following patches). Since we're touching them anyway, we change get() and set() to take a const struct kernel_param (which they really are). This causes some harmless warnings until we fix them (in following patches). To reduce churn, module_param_call creates the ops struct so the callers don't have to change (and casts the functions to reduce warnings). The modern version which takes an ops struct is called module_param_cb. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Reviewed-by: Takashi Iwai <tiwai@suse.de> Tested-by: Phil Carmody <ext-phil.2.carmody@nokia.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Ville Syrjala <syrjala@sci.fi> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Alessandro Rubini <rubini@ipvvis.unipv.it> Cc: Michal Januszewski <spock@gentoo.org> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Neil Brown <neilb@suse.de> Cc: linux-kernel@vger.kernel.org Cc: linux-input@vger.kernel.org Cc: linux-fbdev-devel@lists.sourceforge.net Cc: linux-nfs@vger.kernel.org Cc: netdev@vger.kernel.org
2010-08-10nfs: Add "lookupcache" to displayed mount optionsPatrick J. LoPresti1-0/+7
Running "cat /proc/mounts" fails to display the "lookupcache" option. This oversight cost me a bunch of wasted time recently. The following simple patch fixes it. CC: stable <stable@kernel.org> Signed-off-by: Patrick LoPresti <lopresti@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-10Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6Linus Torvalds3-6/+15
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (96 commits) no need for list_for_each_entry_safe()/resetting with superblock list Fix sget() race with failing mount vfs: don't hold s_umount over close_bdev_exclusive() call sysv: do not mark superblock dirty on remount sysv: do not mark superblock dirty on mount btrfs: remove junk sb_dirt change BFS: clean up the superblock usage AFFS: wait for sb synchronization when needed AFFS: clean up dirty flag usage cifs: truncate fallout mbcache: fix shrinker function return value mbcache: Remove unused features add f_flags to struct statfs(64) pass a struct path to vfs_statfs update VFS documentation for method changes. All filesystems that need invalidate_inode_buffers() are doing that explicitly convert remaining ->clear_inode() to ->evict_inode() Make ->drop_inode() just return whether inode needs to be dropped fs/inode.c:clear_inode() is gone fs/inode.c:evict() doesn't care about delete vs. non-delete paths now ... Fix up trivial conflicts in fs/nilfs2/super.c
2010-08-10NFS: allow close-to-open cache semantics to apply to root of NFS filesystemNeil Brown1-0/+7
To obey NFS cache semantics, the client must verify the cached attributes when a file is opened. In most cases this is done by a call to d_validate as one of the last steps in path_walk. However for the root of a filesystem, d_validate is only ever called on the mounted-on filesystem (except when the path ends '.' or '..'). So NFS has no chance to validate the attributes. So, in nfs_opendir, we revalidate the attributes if the opened directory is the mountpoint. This may cause double-validation for "." and ".." lookups, but that is better than missing regular /path/name lookups completely. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-09convert remaining ->clear_inode() to ->evict_inode()Al Viro3-6/+15
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-08-07Merge branch 'nfs-for-2.6.36' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds22-381/+624
* 'nfs-for-2.6.36' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: (42 commits) NFS: NFSv4.1 is no longer a "developer only" feature NFS: NFS_V4 is no longer an EXPERIMENTAL feature NFS: Fix /proc/mount for legacy binary interface NFS: Fix the locking in nfs4_callback_getattr SUNRPC: Defer deleting the security context until gss_do_free_ctx() SUNRPC: prevent task_cleanup running on freed xprt SUNRPC: Reduce asynchronous RPC task stack usage SUNRPC: Move the bound cred to struct rpc_rqst SUNRPC: Clean up of rpc_bindcred() SUNRPC: Move remaining RPC client related task initialisation into clnt.c SUNRPC: Ensure that rpc_exit() always wakes up a sleeping task SUNRPC: Make the credential cache hashtable size configurable SUNRPC: Store the hashtable size in struct rpc_cred_cache NFS: Ensure the AUTH_UNIX credcache is allocated dynamically NFS: Fix the NFS users of rpc_restart_call() SUNRPC: The function rpc_restart_call() should return success/failure NFSv4: Get rid of the bogus RPC_ASSASSINATED(task) checks NFSv4: Clean up the process of renewing the NFSv4 lease NFSv4.1: Handle NFS4ERR_DELAY on SEQUENCE correctly NFS: nfs_rename() should not have to flush out writebacks ...
2010-08-06NFS: NFSv4.1 is no longer a "developer only" featureTrond Myklebust1-2/+2
Mark it as 'experimental' instead, since in practice, NFSv4.1 should now be relatively stable. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-06NFS: NFS_V4 is no longer an EXPERIMENTAL featureTrond Myklebust1-3/+3
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-06NFS: Fix /proc/mount for legacy binary interfaceBryan Schumaker1-0/+4
Add a flag so we know if we mounted the NFS server using the legacy binary interface. If we used the legacy interface, then we should not show the mountd options. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-06NFS: Fix the locking in nfs4_callback_getattrTrond Myklebust1-3/+3
The delegation is protected by RCU now, so we need to replace the nfsi->rwsem protection with an rcu protected section. Reported-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-04SUNRPC: Move the bound cred to struct rpc_rqstTrond Myklebust3-9/+8
This will allow us to save the original generic cred in rpc_message, so that if we migrate from one server to another, we can generate a new bound cred without having to punt back to the NFS layer. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-03NFS: Fix the NFS users of rpc_restart_call()Trond Myklebust2-7/+4
Fix up those functions that depend on knowing whether or not rpc_restart_call is successful or not. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-03NFSv4: Get rid of the bogus RPC_ASSASSINATED(task) checksTrond Myklebust1-10/+0
There is no real reason to have RPC_ASSASSINATED() checks in the NFS code. As far as it is concerned, this is just an RPC error... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-03NFSv4: Clean up the process of renewing the NFSv4 leaseTrond Myklebust1-14/+9
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-03NFSv4.1: Handle NFS4ERR_DELAY on SEQUENCE correctlyTrond Myklebust1-30/+62
In RFC5661, an NFS4ERR_DELAY error on a SEQUENCE operation has the special meaning that the server is not finished processing the request. In this case we want to just retry the request without touching the slot. Also fix a bug whereby we would fail to update the sequence id if the server returned any error other than NFS_OK/NFS4ERR_DELAY. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-03NFS: nfs_rename() should not have to flush out writebacksTrond Myklebust1-9/+0
We don't really support nfs servers that invalidate the file handle after a rename, so precautions such as flushing out dirty data before renaming the file are superfluous. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-03NFS: Clean up the callers of nfs_wb_all()Trond Myklebust2-12/+2
There is no need to flush out writes before calling nfs_wb_all(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-03NFS: Fix up the fsync codeTrond Myklebust1-30/+21
Christoph points out that the VFS will always flush out data before calling nfs_fsync(), so we can dispense with a full call to nfs_wb_all(), and replace that with a simpler call to nfs_commit_inode(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-02vfs: re-introduce MAY_CHDIREric Paris1-1/+1
Currently MAY_ACCESS means that filesystems must check the permissions right then and not rely on cached results or the results of future operations on the object. This can be because of a call to sys_access() or because of a call to chdir() which needs to check search without relying on any future operations inside that dir. I plan to use MAY_ACCESS for other purposes in the security system, so I split the MAY_ACCESS and the MAY_CHDIR cases. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Stephen D. Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org>
2010-08-01NFS: Fix a typo in include/linux/nfs_fs.hTrond Myklebust1-5/+0
nfs_commit_inode() needs to be defined irrespectively of whether or not we are supporting NFSv3 and NFSv4. Allow the compiler to optimise away code in the NFSv2-only case by converting it into an inlined stub function. Reported-and-tested-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-07-30NFS: Ensure that writepage respects the nonblock flagTrond Myklebust1-6/+17
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-07-30NFS: kswapd must not block in nfs_release_pageTrond Myklebust2-4/+13
See https://bugzilla.kernel.org/show_bug.cgi?id=16056 If other processes are blocked waiting for kswapd to free up some memory so that they can make progress, then we cannot allow kswapd to block on those processes. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@kernel.org
2010-07-30nfs: include space for the NUL in root pathDan Carpenter1-1/+1
In root_nfs_name() it does the following: if (strlen(buf) + strlen(cp) > NFS_MAXPATHLEN) { printk(KERN_ERR "Root-NFS: Pathname for remote directory too long.\n"); return -1; } sprintf(nfs_export_path, buf, cp); In the original code if (strlen(buf) + strlen(cp) == NFS_MAXPATHLEN) then the sprintf() would lead to an overflow. Generally the rest of the code assumes that the path can have NFS_MAXPATHLEN (1024) characters and a NUL terminator so the fix is to add space to the nfs_export_path[] buffer. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-07-30NFSv4: Ensure the lockowners are labelled using the fl_owner and/or fl_pidTrond Myklebust4-14/+50
flock locks want to be labelled using the process pid, while posix locks want to be labelled using the fl_owner. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-07-30NFSv4: Add support for the RELEASE_LOCKOWNER operationTrond Myklebust4-0/+86
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>
2010-07-30NFSv4: Clean up for lockowner XDR encodingTrond Myklebust1-12/+20
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-07-30NFSv4: Ensure that we track the NFSv4 lock state in read/write requests.Trond Myklebust6-17/+104
This patch fixes bugzilla entry 14501: https://bugzilla.kernel.org/show_bug.cgi?id=14501 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-07-19mm: add context argument to shrinker callbackDave Chinner2-2/+3
The current shrinker implementation requires the registered callback to have global state to work from. This makes it difficult to shrink caches that are not global (e.g. per-filesystem caches). Pass the shrinker structure to the callback so that users can embed the shrinker structure in the context the shrinker needs to operate on and get back to it in the callback via container_of(). Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2010-06-24NFSv4: Clean up struct nfs4_state_ownerTrond Myklebust3-11/+7
The 'so_delegations' list appears to be unused. Also eliminate so_client. If we already have so_server, we can get to the nfs_client structure. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22NFSv4.1: There is no need to init the session more than once...Trond Myklebust2-1/+7
Set up a flag to ensure that is indeed the case. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22NFSv41: Cleanup for nfs4_alloc_session.Trond Myklebust2-7/+7
There is no reason to change the nfs_client state every time we allocate a new session. Move that line into nfs4_init_client_minor_version. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22NFSv41: Clean up exclusive createTrond Myklebust1-11/+6
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22NFSv41: Deprecate nfs_client->cl_minorversionTrond Myklebust1-5/+5
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22NFSv41: Fix nfs_async_inode_return_delegation() uglinessTrond Myklebust5-19/+8
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22NFSv41: Convert the various reboot recovery ops etc to minor version opsTrond Myklebust4-38/+18
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22NFSv41: Clean up the NFSv4.1 minor version specific operationsTrond Myklebust3-9/+37
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22NFSv41: Don't store session state in the nfs_client->cl_stateTrond Myklebust3-5/+10
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22NFSv41: Further cleanup for nfs4_sequence_doneTrond Myklebust1-9/+12
Instead of testing if the nfs_client has a session, we should be testing if the struct nfs4_sequence_res was set up with one. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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