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* fs/char_dev.c: remove unused cdev_index()Namhyung Kim2011-01-131-13/+0
| | | | | | | | | | | Commit 66fa12c571d3 ("ieee1394: remove the old IEEE 1394 driver stack") eliminated the only user of cdev_index(). So it can be removed too. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Cc: Stefan Richter <stefanr@s5r6.in-berlin.de> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* /proc/kcore: fix seekingDave Anderson2011-01-131-1/+1
| | | | | | | | | | | | | | | | | | | Commit 34aacb2920 ("procfs: Use generic_file_llseek in /proc/kcore") broke seeking on /proc/kcore. This changes it back to use default_llseek in order to restore the original behavior. The problem with generic_file_llseek is that it only allows seeks up to inode->i_sb->s_maxbytes, which is 2GB-1 on procfs, where the memory file offset values in the /proc/kcore PT_LOAD segments may exceed or start beyond that offset value. A similar revert was made for /proc/vmcore. Signed-off-by: Dave Anderson <anderson@redhat.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc: move proc_console.c to fs/proc/consoles.cAlexey Dobriyan2011-01-132-3/+3
| | | | | | | | | | Filename is supposed to match procfile name for random junk. Add __init while I'm at it. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc: less LOCK/UNLOCK in remove_proc_entry()Alexey Dobriyan2011-01-131-4/+1
| | | | | | | | | For the common case where a proc entry is being removed and nobody is in the process of using it, save a LOCK/UNLOCK pair. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* kpagecount: add slab page checking because _mapcount is in a unionPetr Holasek2011-01-131-1/+1
| | | | | | | | | | | | Add a PageSlab() check before adding the _mapcount value to /kpagecount. page->_mapcount is in a union with the SLAB structure so for pages controlled by SLAB, page_mapcount() returns nonsense. Signed-off-by: Petr Holasek <pholasek@redhat.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Cc: Matt Mackall <mpm@selenic.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc: use single_open() correctlyJovi Zhang2011-01-131-26/+3
| | | | | | | | | | | | single_open()'s third argument is for copying into seq_file->private. Use that, rather than open-coding it. Signed-off-by: Jovi Zhang <bookjovi@gmail.com> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Alexey Dobriyan <adobriyan@gmail.com> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc: ->low_ino cleanupAlexey Dobriyan2011-01-133-15/+6
| | | | | | | | | | | | | | - ->low_ino is write-once field -- reading it under locks is unnecessary. - /proc/$PID stuff never reaches pde_put()/free_proc_entry() -- PROC_DYNAMIC_FIRST check never triggers. - in proc_get_inode(), inode number always matches proc dir entry, so save one parameter. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc: use seq_puts()/seq_putc() where possibleAlexey Dobriyan2011-01-136-31/+31
| | | | | | | | | | | | | | | For string without format specifiers, use seq_puts(). For seq_printf("\n"), use seq_putc('\n'). text data bss dec hex filename 61866 488 112 62466 f402 fs/proc/proc.o 61729 488 112 62329 f379 fs/proc/proc.o ---------------------------------------------------- -139 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc: use unsigned long inside /proc/*/statmAlexey Dobriyan2011-01-134-9/+12
| | | | | | | | | | /proc/*/statm code needlessly truncates data from unsigned long to int. One needs only 8+ TB of RAM to make truncation visible. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Reviewed-by: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/proc/base.c, kernel/latencytop.c: convert sprintf_symbol() to %psJoe Perches2011-01-131-14/+8
| | | | | | | | | | | Use temporary lr for struct latency_record for improved readability and fewer columns used. Removed trailing space from output. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Joe Perches <joe@perches.com> Cc: Jiri Kosina <trivial@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* reiserfs: make sure va_end() is always called after va_start().Jesper Juhl2011-01-131-2/+2
| | | | | | | | | | | | | | | | A call to va_start() must always be followed by a call to va_end() in the same function. In fs/reiserfs/prints.c::print_block() this is not always the case. If 'bh' is NULL we'll return without calling va_end(). One could add a call to va_end() before the 'return' statement, but it's nicer to just move the call to va_start() after the test for 'bh' being NULL. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Acked-by: Edward Shishkin <edward.shishkin@gmail.com> Cc: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* befs: don't pass huge structs by valueJesper Juhl2011-01-132-9/+9
| | | | | | | | | | | | | 'struct befs_disk_data_stream' is huge (~144 bytes) and it's being passed by value in fs/befs/endian.h::cpu_to_fsrun(). It would be better to pass a pointer. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Cc: Will Dyson <will_dyson@pobox.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pipe: use event aware wakeupsDavide Libenzi2011-01-131-5/+5
| | | | | | | | | | | | | Send the events the wakeup refers to, so that epoll, and even the new poll code in fs/select.c can avoid wakeups if the events do not match the requested set. Signed-off-by: Davide Libenzi <davidel@xmailserver.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* binfmt_elf: cleanupsMikael Pettersson2011-01-131-14/+9
| | | | | | | | | | | | | | | | | | | | | This cleans up a few bits in binfmt_elf.c and binfmts.h: - the hasvdso field in struct linux_binfmt is unused, so remove it and the only initialization of it - the elf_map CPP symbol is not defined anywhere in the kernel, so remove an unnecessary #ifndef elf_map - reduce excessive indentation in elf_format's initializer - add missing spaces, remove extraneous spaces No functional changes, but tested on x86 (32 and 64 bit), powerpc (32 and 64 bit), sparc64, arm, and alpha. Signed-off-by: Mikael Pettersson <mikpe@it.uu.se> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* epoll: convert max_user_watches to longRobin Holt2011-01-131-8/+12
| | | | | | | | | | | | On a 16TB machine, max_user_watches has an integer overflow. Convert it to use a long and handle the associated fallout. Signed-off-by: Robin Holt <holt@sgi.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Acked-by: Davide Libenzi <davidel@xmailserver.org> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/select.c: fix information leak to userspaceVasiliy Kulikov2011-01-131-0/+2
| | | | | | | | | | | | | | | On some architectures __kernel_suseconds_t is int. On these archs struct timeval has padding bytes at the end. This struct is copied to userspace with these padding bytes uninitialized. This leads to leaking of contents of kernel stack memory. This bug was added with v2.6.27-rc5-286-gb773ad4. [akpm@linux-foundation.org: avoid the memset on architectures which don't need it] Signed-off-by: Vasiliy Kulikov <segooon@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/ext4/inode.c: use pr_warn_ratelimited()Andrew Morton2011-01-131-1/+2
| | | | | | | | | | pr_warning_ratelimited() doesn't exist. Also include printk.h, which defines these things. Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* NTFS: writev() fix and maintenance/contact details updateAnton Altaparmakov2011-01-123-22/+21
| | | | | | | | | Fix writev() to not keep writing the first segment over and over again instead of moving onto subsequent segments and update the NTFS entry in MAINTAINERS to reflect that Tuxera Inc. now supports the NTFS driver. Signed-off-by: Anton Altaparmakov <anton@tuxera.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'nfs-for-2.6.38' of ↵Linus Torvalds2011-01-1139-3814/+7414
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.linux-nfs.org/projects/trondmy/nfs-2.6 * 'nfs-for-2.6.38' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: (89 commits) NFS fix the setting of exchange id flag NFS: Don't use vm_map_ram() in readdir NFSv4: Ensure continued open and lockowner name uniqueness NFS: Move cl_delegations to the nfs_server struct NFS: Introduce nfs_detach_delegations() NFS: Move cl_state_owners and related fields to the nfs_server struct NFS: Allow walking nfs_client.cl_superblocks list outside client.c pnfs: layout roc code pnfs: update nfs4_callback_recallany to handle layouts pnfs: add CB_LAYOUTRECALL handling pnfs: CB_LAYOUTRECALL xdr code pnfs: change lo refcounting to atomic_t pnfs: check that partial LAYOUTGET return is ignored pnfs: add layout to client list before sending rpc pnfs: serialize LAYOUTGET(openstateid) pnfs: layoutget rpc code cleanup pnfs: change how lsegs are removed from layout list pnfs: change layout state seqlock to a spinlock pnfs: add prefix to struct pnfs_layout_hdr fields pnfs: add prefix to struct pnfs_layout_segment fields ...
| * NFS fix the setting of exchange id flagAndy Adamson2011-01-111-4/+21
| | | | | | | | | | | | | | | | | | | | | | Indicate support for referrals. Do not set any PNFS roles. Check the flags returned by the server for validity. Do not use exchange flags from an old client ID instance when recovering a client ID. Update the EXCHID4_FLAG_XXX set to RFC 5661. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * Merge branch 'bugfixes' into nfs-for-2.6.38Trond Myklebust2011-01-1022-117/+197
| |\ | | | | | | | | | | | | | | | | | | Conflicts: fs/nfs/nfs2xdr.c fs/nfs/nfs3xdr.c fs/nfs/nfs4xdr.c
| | * NFS: Don't use vm_map_ram() in readdirTrond Myklebust2011-01-104-41/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | vm_map_ram() is not available on NOMMU platforms, and causes trouble on incoherrent architectures such as ARM when we access the page data through both the direct and the virtual mapping. The alternative is to use the direct mapping to access page data for the case when we are not crossing a page boundary, but to copy the data into a linear scratch buffer when we are accessing data that spans page boundaries. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Tested-by: Marc Kleine-Budde <mkl@pengutronix.de> Cc: stable@kernel.org [2.6.37]
| * | NFSv4: Ensure continued open and lockowner name uniquenessTrond Myklebust2011-01-062-6/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | NFS: Move cl_delegations to the nfs_server structChuck Lever2011-01-064-92/+250
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Delegations are per-inode, not per-nfs_client. When a server file system is migrated, delegations on the client must be moved from the source to the destination nfs_server. Make it easier to manage a mount point's delegation list across a migration event by moving the list to the nfs_server struct. Clean up: I added documenting comments to public functions I changed in this patch. For consistency I added comments to all the other public functions in fs/nfs/delegation.c. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | NFS: Introduce nfs_detach_delegations()Chuck Lever2011-01-061-21/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clean up: Refactor code that takes clp->cl_lock and calls nfs_detach_delegations_locked() into its own function. While we're changing the call sites, get rid of the second parameter and the logic in nfs_detach_delegations_locked() that uses it, since callers always set that parameter of nfs_detach_delegations_locked() to NULL. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | NFS: Move cl_state_owners and related fields to the nfs_server structChuck Lever2011-01-062-72/+181
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | NFSv4 migration needs to reassociate state owners from the source to the destination nfs_server data structures. To make that easier, move the cl_state_owners field to the nfs_server struct. cl_openowner_id and cl_lockowner_id accompany this move, as they are used in conjunction with cl_state_owners. The cl_lock field in the parent nfs_client continues to protect all three of these fields. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | NFS: Allow walking nfs_client.cl_superblocks list outside client.cChuck Lever2011-01-062-21/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We're about to move some fields from struct nfs_client to struct nfs_server. There is a many-to-one relationship between nfs_servers and nfs_clients. After these fields are moved to the nfs_server struct, to visit all of the data in these fields that is owned by one nfs_client, code will need to visit each nfs_server on the cl_superblocks list for that nfs_client. To serialize changes to the cl_superblocks list during these little expeditions, protect the list with RCU. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | pnfs: layout roc codeFred Isaman2011-01-066-6/+151
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A layout can request return-on-close. How this interacts with the forgetful model of never sending LAYOUTRETURNS is a bit ambiguous. We forget any layouts marked roc, and wait for them to be completely forgotten before continuing with the close. In addition, to compensate for races with any inflight LAYOUTGETs, and the fact that we do not get any layout stateid back from the server, we set the barrier to the worst case scenario of current_seqid + number of outstanding LAYOUTGETS. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | pnfs: update nfs4_callback_recallany to handle layoutsAlexandros Batsakis2011-01-062-3/+34
| | | | | | | | | | | | | | | | | | | | | | | | While here, update the code a bit. Signed-off-by: Alexandros Batsakis <batsakis@netapp.com> Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | pnfs: add CB_LAYOUTRECALL handlingFred Isaman2011-01-064-20/+194
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the heart of the wave 2 submission. Add the code to trigger drain and forget of any afected layouts. In addition, we set a "barrier", below which any LAYOUTGET reply is ignored. This is to compensate for the fact that we do not wait for outstanding LAYOUTGETs to complete as per section 12.5.5.2.1 of RFC 5661. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | pnfs: CB_LAYOUTRECALL xdr codeFred Isaman2011-01-063-1/+93
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the xdr decoding for CB_LAYOUTRECALL. Signed-off-by: Alexandros Batsakis <batsakis@netapp.com> Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: Marc Eshel <eshel@almaden.ibm.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>
| * | pnfs: change lo refcounting to atomic_tFred Isaman2011-01-062-24/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | This will be required to allow us to grab reference outside of i_lock. While we are at it, make put_layout_hdr take the same argument as all the related functions. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | pnfs: check that partial LAYOUTGET return is ignoredFred Isaman2011-01-061-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | Either a bad server reply, or our ignoring of multiple array segments in a reply, can cause a reply to not meet our requirements. Ensure that we ignore such replies. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | pnfs: add layout to client list before sending rpcFred Isaman2011-01-061-8/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since this list will be used to search for layouts to recall, this is necessary to avoid a race where the recall comes in, sees there is nothing in the client list, and prepares to return NOMATCHING, while the LAYOUTGET gets processed before the recall updates the stateid. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | pnfs: serialize LAYOUTGET(openstateid)Fred Isaman2011-01-064-10/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: layoutget rpc code cleanupFred Isaman2011-01-061-9/+10
| | | | | | | | | | | | | | | | | | | | | | | | No functional changes, just some code minor code rearrangement and comments. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | pnfs: change how lsegs are removed from layout listFred Isaman2011-01-063-44/+96
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is to prepare the way for sensible io draining. Instead of just removing the lseg from the list, we instead clear the VALID flag (preventing new io from grabbing references to the lseg) and remove the reference holding it in the list. Thus the lseg will be removed once any io in progress completes and any references still held are dropped. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | pnfs: change layout state seqlock to a spinlockFred Isaman2011-01-063-61/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This prepares for future changes, where the layout state needs to change atomically with several other variables. In particular, it will need to know if lo->segs is empty, as we test that instead of manipulating the NFS_LAYOUT_STATEID_SET bit. Moreover, the layoutstateid is not really a read-mostly structure, as it is written almost as often as it is read. The behavior of pnfs_get_layout_stateid is also slightly changed, so that it no longer changes the stateid. Its name is changed to +pnfs_choose_layoutget_stateid. 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>
| * | pnfs: add prefix to struct pnfs_layout_hdr fieldsFred Isaman2011-01-063-56/+56
| | | | | | | | | | | | | | | Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | pnfs: add prefix to struct pnfs_layout_segment fieldsFred Isaman2011-01-063-39/+39
| | | | | | | | | | | | | | | | | | | | | While we are renaming all the fields, change lo->state to lo->plh_flags. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | pnfs: remove unnecessary field lgp->statusFred Isaman2011-01-061-2/+1
| | | | | | | | | | | | | | | | | | 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>
| * | pnfs: fix incorrect comment in destroy_lsegFred Isaman2011-01-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Comment references get_layout_hdr_locked, which never existed in submitted code. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | NFS rename client back channel transport fieldAndy Adamson2011-01-061-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | Differentiate from server backchannel Signed-off-by: Andy Adamson <andros@netapp.com> Acked-by: Bruce Fields <bfields@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | NFS add session back channel drainingAndy Adamson2011-01-065-15/+85
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently session draining only drains the fore channel. The back channel processing must also be drained. Use the back channel highest_slot_used to indicate that a callback is being processed by the callback thread. Move the session complete to be per channel. When the session is draininig, wait for any current back channel processing to complete and stop all new back channel processing by returning NFS4ERR_DELAY to the back channel client. Drain the back channel, then the fore channel. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | NFS RPC_AUTH_GSS unsupported on v4.1 back channelAndy Adamson2011-01-061-0/+3
| | | | | | | | | | | | | | | | | | Signed-off-by: Andy Adamson <andros@netapp.com> Acked-by: Bruce Fields <bfields@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | NFS refactor nfs_find_client and reference client across callback processingAndy Adamson2011-01-066-188/+245
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes a bug where the nfs_client could be freed during callback processing. Refactor nfs_find_client to use minorversion specific means to locate the correct nfs_client structure. In the NFS layer, V4.0 clients are found using the callback_ident field in the CB_COMPOUND header. V4.1 clients are found using the sessionID in the CB_SEQUENCE operation which is also compared against the sessionID associated with the back channel thread after a successful CREATE_SESSION. Each of these methods finds the one an only nfs_client associated with the incoming callback request - so nfs_find_client_next is not needed. In the RPC layer, the pg_authenticate call needs to find the nfs_client. For the v4.0 callback service, the callback identifier has not been decoded so a search by address, version, and minorversion is used. The sessionid for the sessions based callback service has (usually) not been set for the pg_authenticate on a CB_NULL call which can be sent prior to the return of a CREATE_SESSION call, so the sessionid associated with the back channel thread is not used to find the client in pg_authenticate for CB_NULL calls. Pass the referenced nfs_client to each CB_COMPOUND operation being proceesed via the new cb_process_state structure. The reference is held across cb_compound processing. Use the new cb_process_state struct to move the NFS4ERR_RETRY_UNCACHED_REP processing from process_op into nfs4_callback_sequence where it belongs. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | NFS associate sessionid with callback connectionAndy Adamson2011-01-063-0/+38
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The sessions based callback service is started prior to the CREATE_SESSION call so that it can handle CB_NULL requests which can be sent before the CREATE_SESSION call returns and the session ID is known. Set the callback sessionid after a sucessful CREATE_SESSION. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | NFS implement v4.0 callback_identAndy Adamson2011-01-064-0/+54
| | | | | | | | | | | | | | | | | | | | | | | | | | | Use the small id to pointer translator service to provide a unique callback identifier per SETCLIENTID call used to identify the v4.0 callback service associated with the clientid. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | NFS do not clear minor version at nfs_client freeAndy Adamson2011-01-061-13/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Resetting the client minor version operations causes nfs4_destroy_callback to fail to shutdown the NFSv4.1 callback service. There is no reason to reset the client minorversion operations when the nfs_client struct is being freed. Remove the minorverion reset and rename the function. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | NFS use svc_create_xprt for NFSv4.1 callback serviceAndy Adamson2011-01-061-10/+18
| | | | | | | | | | | | | | | | | | | | | | | | The new back channel transport means we call the normal creation routine as well as svc_xprt_put. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 15:59:07 +0000