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2010-10-07NFS: new idmapperBryan Schumaker
This patch creates a new idmapper system that uses the request-key function to place a call into userspace to map user and group ids to names. The old idmapper was single threaded, which prevented more than one request from running at a single time. This means that a user would have to wait for an upcall to finish before accessing a cached result. The upcall result is stored on a keyring of type id_resolver. See the file Documentation/filesystems/nfs/idmapper.txt for instructions. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> [Trond: fix up the return value of nfs_idmap_lookup_name and clean up code] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-29NFS: We must use list_for_each_entry_safe in nfs_access_cache_shrinkerTrond Myklebust
We may end up removing the current entry from nfs_access_lru_list. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-29NFS: don't use FLUSH_SYNC on WB_SYNC_NONE COMMIT calls (try #2)Jeff Layton
WB_SYNC_NONE is supposed to mean "don't wait on anything". That should also include not waiting for COMMIT calls to complete. WB_SYNC_NONE is also implied when wbc->nonblocking and wbc->for_background are set, so we can replace those checks in nfs_commit_unstable_pages with a check for WB_SYNC_NONE. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-29NFS: Really fix put_nfs_open_context()Trond Myklebust
In nfs_open_revalidate(), if the open_context() call returns an inode that is not the same as dentry->d_inode, then we will call put_nfs_open_context() with a valid dentry->d_inode, but without the context being part of the nfsi->open_files list. In this case too, we want to just skip the list removal, but we do want to call the ->close_context() callback in order to close the NFSv4 state. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Acked-by: Jeff Layton <jlayton@redhat.com>
2010-09-24NFSv4.1: keep seq_res.sr_slot as pointer rather than an indexBenny Halevy
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>
2010-09-23nfs: show "local_lock" mount option in /proc/mountsSuresh Jayaraman
Display the status of 'local_lock' mount option in /proc/mounts. Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-23NFS: handle inode==NULL in __put_nfs_open_contextBenny Halevy
inode may be NULL when put_nfs_open_context is called from nfs_atomic_lookup before d_add_unique(dentry, inode) Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-23nfs: introduce mount option '-olocal_lock' to make locks localSuresh Jayaraman
NFS clients since 2.6.12 support flock locks by emulating fcntl byte-range locks. Due to this, some windows applications which seem to use both flock (share mode lock mapped as flock by Samba) and fcntl locks sequentially on the same file, can't lock as they falsely assume the file is already locked. The problem was reported on a setup with windows clients accessing excel files on a Samba exported share which is originally a NFS mount from a NetApp filer. Older NFS clients (< 2.6.12) did not see this problem as flock locks were considered local. To support legacy flock behavior, this patch adds a mount option "-olocal_lock=" which can take the following values: 'none' - Neither flock locks nor POSIX locks are local 'flock' - flock locks are local 'posix' - fcntl/POSIX locks are local 'all' - Both flock locks and POSIX locks are local Testing: - This patch was tested by using -olocal_lock option with different values and the NLM calls were noted from the network packet captured. 'none' - NLM calls were seen during both flock() and fcntl(), flock lock was granted, fcntl was denied 'flock' - no NLM calls for flock(), NLM call was seen for fcntl(), granted 'posix' - NLM call was seen for flock() - granted, no NLM call for fcntl() 'all' - no NLM calls were seen during both flock() and fcntl() - No bugs were seen during NFSv4 locking/unlocking in general and NFSv4 reboot recovery. Cc: Neil Brown <neilb@suse.de> Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-22lockd: Remove BKL from the clientBryan Schumaker
This patch removes all calls to lock_kernel() from the client. This patch should be applied after the "fs/lock.c prepare for BKL removal" patch submitted by Arnd Bergmann on September 18. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-21SUNRPC: Refactor logic to NUL-terminate strings in pagesChuck Lever
Clean up: Introduce a helper to '\0'-terminate XDR strings that are placed in a page in the page cache. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-21SUNRPC: Correct an rpcbind debugging messageChuck Lever
Clean up. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-21NFS: Fix NFSv3 debugging messages in fs/nfs/nfs3proc.cChuck Lever
Clean up. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-21NFS: Convert nfsiod to use alloc_workqueue()Trond Myklebust
create_singlethread_workqueue() is deprecated. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-21SUNRPC: Convert rpciod to use the alloc_workqueue() interfaceTrond Myklebust
create_workqueue() is a deprecated function. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-21NFSv4.1: Fix the slotid initialisation in nfs_async_rename()Trond Myklebust
This fixes an Oopsable condition that was introduced by commit d3d4152a5d59af9e13a73efa9e9c24383fbe307f (nfs: make sillyrename an async operation) Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-21NFS: Fix a use-after-free case in nfs_async_rename()Trond Myklebust
The call to nfs_async_rename_release() after rpc_run_task() is incorrect. The rpc_run_task() is always guaranteed to call the ->rpc_release() method. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-17nfs: make sillyrename an async operationJeff Layton
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>
2010-09-17nfs: move nfs_sillyrename to unlink.cJeff Layton
...since that's where most of the sillyrenaming code lives. A comment block is added to the beginning as well to clarify how sillyrenaming works. Also, make nfs_async_unlink static as nfs_sillyrename is the only caller. 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>
2010-09-17nfs: standardize the rename response containerJeff Layton
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>
2010-09-17nfs: standardize the rename args containerJeff Layton
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>
2010-09-17NFS: Add an 'open_context' element to struct nfs_rpc_opsTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-17NFS: Clean up nfs4_proc_create()Trond Myklebust
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>
2010-09-17NFSv4: Further cleanups for nfs4_open_revalidate()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-17NFSv4: Clean up nfs4_open_revalidateTrond Myklebust
Remove references to 'struct nameidata' from the low-level open_revalidate code, and replace them with a struct nfs_open_context which will be correctly initialised upon success. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-17NFSv4: Further minor cleanups for nfs4_atomic_open()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-17NFSv4: Clean up nfs4_atomic_openTrond Myklebust
Start moving the 'struct nameidata' dependent code out of the lower level NFS code in preparation for the removal of open intents. Instead of the struct nameidata, we pass down a partially initialised struct nfs_open_context that will be fully initialised by the atomic open upon success. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-17SUNRPC: Remove rpcb_getport_sync()Chuck Lever
Clean up: rpcb_getport_sync() has no more users, so remove it. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-17NFS: Allow NFSROOT debugging messages to be enabled dynamicallyChuck Lever
As a convenience, introduce a kernel command line option to enable NFSROOT debugging messages. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-17NFS: Clean up nfsroot.cChuck Lever
Clean up: now that mount option parsing for nfsroot is handled in fs/nfs/super.c, remove code in fs/nfs/nfsroot.c that is no longer used. This includes code that constructs the legacy nfs_mount_data structure, and code that does a MNT call to the server. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-17NFS: Use super.c for NFSROOT mount option parsingChuck Lever
Replace duplicate code in NFSROOT for mounting an NFS server on '/' with logic that uses the existing mainline text-based logic in the NFS client. Add documenting comments where appropriate. Note that this means NFSROOT mounts now use the same default settings as v2/v3 mounts done via mount(2) from user space. vers=3,tcp,rsize=<negotiated default>,wsize=<negotiated default> As before, however, no version/protocol negotiation with the server is done. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-17NFS: Clean up NFSROOT command line parsingChuck Lever
Clean up: To reduce confusion, rename nfs_root_name as nfs_root_parms, as this buffer contains more than just the name of the remote server. Introduce documenting comments around nfs_root_setup(). Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-17NFS: Remove \t from mount debugging messageChuck Lever
During boot, a random character is displayed instead of a tab. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-29SUNRPC: Don't truncate tail data unnecessarily in xdr_shrink_pagelenTrond Myklebust
If we have unused buffer space, then we should make use of that rather than unnecessarily truncating the message. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-29sunrpc: simplify xdr_shrink_pagelen use of "copy"Benny Halevy
The "copy" variable value can be computed using the existing logic rather than repeating it. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-29sunrpc: don't use the copy variable in nested blockBenny Halevy
to clean up the code "copy" will be set prior to the block hence it mustn't be used there. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-29sunrpc: clean up xdr_shrink_pagelen use of temporary pointerBenny Halevy
char *p is used only as a shorthand for tail->iov_base + len in a nested block. Move it there. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-29sunrpc: don't shorten buflen twice in xdr_shrink_pagelenBenny Halevy
On Jan. 14, 2009, 2:50 +0200, andros@netapp.com wrote: > From: Andy Adamson <andros@netapp.com> > > The buflen is reset for all cases at the end of xdr_shrink_pagelen. > The data left in the tail after xdr_read_pages is not processed when the > buflen is incorrectly set. Note that in this case we also lose (len - tail->iov_len) bytes from the buffered data in pages. Reported-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-29Linux 2.6.36-rc3v2.6.36-rc3Linus Torvalds
2010-08-29Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: firewire: ohci: work around VIA and NEC PHY packet reception bug firewire: core: do not use del_timer_sync() in interrupt context firewire: net: fix unicast reception RCODE in failure paths firewire: sbp2: fix stall with "Unsolicited response" firewire: sbp2: fix memory leak in sbp2_cancel_orbs or at send error ieee1394: Adjust confusing if indentation
2010-08-29firewire: ohci: work around VIA and NEC PHY packet reception bugStefan Richter
VIA VT6306, VIA VT6308, and NEC OrangeLink controllers do not write packet event codes for received PHY packets (or perhaps write evt_no_status, hard to tell). Work around it by overwriting the packet's ACK by ack_complete, so that upper layers that listen to PHY packet reception get to see these packets. (Also tested: TI TSB82AA2, TI TSB43AB22/A, TI XIO2213A, Agere FW643, JMicron JMB381 --- these do not exhibit this bug.) Clemens proposed a quirks flag for that, IOW whitelist known misbehaving controllers for this workaround. Though to me it seems harmless enough to enable for all controllers. The log_ar_at_event() debug log will continue to show the original status from the DMA unit. Reported-by: Clemens Ladisch <clemens@ladisch.de> (VT6308) Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2010-08-28Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: net/ipv4: Eliminate kstrdup memory leak net/caif/cfrfml.c: use asm/unaligned.h ax25: missplaced sock_put(sk) qlge: reset the chip before freeing the buffers l2tp: test for ethernet header in l2tp_eth_dev_recv() tcp: select(writefds) don't hang up when a peer close connection tcp: fix three tcp sysctls tuning tcp: Combat per-cpu skew in orphan tests. pxa168_eth: silence gcc warnings pxa168_eth: update call to phy_mii_ioctl() pxa168_eth: fix error handling in prope pxa168_eth: remove unneeded null check phylib: Fix race between returning phydev and calling adjust_link caif-driver: add HAS_DMA dependency 3c59x: Fix deadlock between boomerang_interrupt and boomerang_start_tx qlcnic: fix poll implementation netxen: fix poll implementation bridge: netfilter: fix a memory leak
2010-08-28Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: Blackfin: bf52x/bf54x boards: drop unused nand page size Blackfin: punt duplicate SPORT MMR defines
2010-08-28Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ALSA: pcm: add more format names sound: oss: fix uninitialized spinlock ALSA: asihpi - Return hw error directly from oustream_write. ASoC: soc-core: fix debugfs_pop_time file permissions ALSA: hda - Add Sony VAIO quirk for ALC269
2010-08-28Merge branch 's5p-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung * 's5p-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: ARM: S5PV310: Fix on Secondary CPU startup ARM: S5PV310: Bug fix on uclk1 and sclk_pwm ARM: S5PV310: Fix missed uart clocks ARM: S5PV310: Should be clk_sclk_apll not clk_mout_apll ARM: S5PV310: Fix on PLL setting for S5PV310 ARM: S5PV310: Add CMU block for S5PV310 Clock ARM: S5PV310: Fix on typo irqs.h of S5PV310 ARM: S5PV310: Fix on default ZRELADDR of ARCH_S5PV310 ARM: S5PV310: Fix on GPIO base addresses ARM: SAMSUNG: Fix on build warning regarding VMALLOC_END type ARM: S5P: VMALLOC_END should be unsigned long
2010-08-28Merge branch 'for-linus' of git://git.infradead.org/users/eparis/notifyLinus Torvalds
* 'for-linus' of git://git.infradead.org/users/eparis/notify: fsnotify: drop two useless bools in the fnsotify main loop fsnotify: fix list walk order fanotify: Return EPERM when a process is not privileged fanotify: resize pid and reorder structure fanotify: drop duplicate pr_debug statement fanotify: flush outstanding perm requests on group destroy fsnotify: fix ignored mask handling between inode and vfsmount marks fanotify: add MAINTAINERS entry fsnotify: reset used_inode and used_vfsmount on each pass fanotify: do not dereference inode_mark when it is unset
2010-08-28Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ecryptfs/ecryptfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ecryptfs/ecryptfs-2.6: eCryptfs: Fix encrypted file name lookup regression ecryptfs: properly mark init functions fs/ecryptfs: Return -ENOMEM on memory allocation failure
2010-08-28Merge branch 'for-linus' of git://android.git.kernel.org/kernel/tegraLinus Torvalds
* 'for-linus' of git://android.git.kernel.org/kernel/tegra: arm: tegra: VMALLOC_END should be unsigned long arm: tegra: fix compilation of board-harmony.c
2010-08-28Merge branch 'drm-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: vgaarb: Wrap vga_(get|put) in CONFIG_VGA_ARB drm/radeon/kms: add missing scratch update in dp_detect drm/modes: Fix CVT-R modeline generation drm: fix regression in drm locking since BKL removal. drm/radeon/kms: remove stray radeon_i2c_destroy drm: mm: fix range restricted allocations drm/nouveau: drop drm_global_mutex before sleeping in submission path drm: export drm_global_mutex for drivers to use drm/nv20: Don't use pushbuf calls on the original nv20. drm/nouveau: Fix TMDS on some DCB1.5 boards. drm/nouveau: Fix backlight control on PPC machines with an internal TMDS panel. drm/nv30: Apply modesetting to the correct slave encoder drm/nouveau: Use a helper function to match PCI device/subsystem IDs. drm/nv50: add dcb type 14 to enum to prevent compiler complaint
2010-08-28Merge branch 'lguest' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus * 'lguest' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: lguest: Odd Fixes lguest: clean up warnings in demonstration launcher.
2010-08-28Merge branch 'omap-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 * 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: OMAP3: PM: ensure IO wakeups are properly disabled omap: Fix omap_4430sdp_defconfig for make oldconfig omap: Use CONFIG_SMP for test_for_ipi and test_for_ltirq omap: Fix sev instruction usage for multi-omap OMAP3: Fix a cpu type check problem omap3: id: fix 3630 rev detection
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