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2012-02-17svcrdma: Cleanup sparse warnings in the svcrdma moduleTom Tucker1-1/+1
The svcrdma transport was un-marshalling requests in-place. This resulted in sparse warnings due to __beXX data containing both NBO and HBO data. The code has been restructured to do byte-swapping as the header is parsed instead of when the header is validated immediately after receipt. Also moved extern declarations for the workqueue and memory pools to the private header file. Signed-off-by: Tom Tucker <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
2012-02-17NFS: include filelayout DS rpc stats in mountstatsWeston Andros Adamson2-2/+5
Include RPC statistics from all data servers in /proc/self/mountstats for pNFS filelayout mounts. Signed-off-by: Weston Andros Adamson <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-02-16SUNRPC: Use KERN_DEFAULT for debugging printk'sChuck Lever1-1/+5
Our dprintk() debugging facility doesn't specify any verbosity level for it's printk() calls, but it should. The default verbosity for printk's is KERN_DEFAULT. You might argue that these are debugging printk's and thus the verbosity should be KERN_DEBUG. That would mean that to see NFS and SUNRPC debugging output an admin would also have to boost the syslog verbosity, which would be insufferably noisy. Signed-off-by: Chuck Lever <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-02-16SUNRPC: add sending,pending queue and max slot to xprt statsAndy Adamson1-2/+5
With static RPC slots, the xprt backlog queue stats were useful in showing when the transport (TCP) was starved by lack of RPC slots. The new dynamic RPC slot code, commit d9ba131d8f58c0d2ff5029e7002ab43f913b36f9, always provides an RPC slot and so only uses the xprt backlog queue when the tcp_max_slot_table_entries value has been hit or when an allocation error occurs. All requests are now placed on the xprt sending or pending queue which need to be monitored for debugging. The max_slot stat shows the maximum number of dynamic RPC slots reached which is useful when debugging performance issues. Add the new fields at the end of the mountstats xprt stanza so that mountstats outputs the previous correct values and ignores the new fields. Bump NFS_IOSTATS_VERS. Signed-off-by: Andy Adamson <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-02-15SUNRPC: Ensure that we can trace waitqueues when !defined(CONFIG_SYSCTL)Trond Myklebust2-2/+16
The tracepoint code relies on the queue->name being defined in order to be able to display the name of the waitqueue on which an RPC task is sleeping. Reported-by: Randy Dunlap <[email protected]> Reported-by: Steven Rostedt <[email protected]> Signed-off-by: Trond Myklebust <[email protected]> Acked-by: Steven Rostedt <[email protected]> Acked-by: Randy Dunlap <[email protected]>
2012-02-15Lockd: per-net up and down routines introducedStanislav Kinsbursky1-0/+2
This patch introduces per-net Lockd initialization and destruction routines. The logic is the same as in global Lockd up and down routines. Probably the solution is not the best one. But at least it looks clear. So per-net "up" routine are called only in case of lockd is running already. If per-net resources are not allocated yet, then service is being registered with local portmapper and lockd sockets created. Per-net "down" routine is called on every lockd_down() call in case of global users counter is not zero. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-02-15SUNRPC: service destruction in network namespace contextStanislav Kinsbursky1-1/+1
v2: Added comment to BUG_ON's in svc_destroy() to make code looks clearer. This patch introduces network namespace filter for service destruction function. Nothing special here - just do exactly the same operations, but only for tranports in passed networks namespace context. BTW, BUG_ON() checks for empty service transports lists were returned into svc_destroy() function. This is because of swithing generic svc_close_all() to networks namespace dependable svc_close_net(). Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-02-06SUNRPC: Change the default limit to the number of TCP slotsTrond Myklebust1-1/+1
Since the scheme of limiting the number of TCP slots to whatever will fit in the current TCP window seems to be working well (Andy reports getting within 20% of the 'iperf' send performance on a 10GigE link) we should just let that be the default mode of operation. Users may still set their own limits using the tcp_max_slot_table_entries parameter if they need to. Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: Add trace events to the sunrpc subsystemTrond Myklebust1-1/+1
Add declarations to allow tracing of RPC call creation, running, sleeping, and destruction. Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: constify the rpc_programTrond Myklebust2-7/+7
Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: constify rpc_program->nameTrond Myklebust1-2/+2
Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: constify rpc_clnt fields cl_server and cl_protnameTrond Myklebust1-5/+4
...and get rid of the superfluous cl_inline_name. Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: search for service transports in network namespace contextStanislav Kinsbursky1-1/+2
Service transports are parametrized by network namespace. And thus lookup of transport instance have to take network namespace into account. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]> Acked-by: J. Bruce Fields <[email protected]>
2012-01-31SUNRPC: register service stats /proc entries in passed network namespace contextStanislav Kinsbursky1-4/+4
This patch makes it possible to create NFSd program entry ("/proc/net/rpc/nfsd") in passed network namespace context instead of hard-coded "init_net". Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31sunrpc: fix stats.h for CONFIG_PROC_FS not enabledRandy Dunlap1-2/+2
Fix build errors in linux/sunrpc/stats.h when CONFIG_PROC_FS is not enabled: - add parameter names to inline functions - fix placement of '(' in rpc_proc_unregister() Fixes these errors: include/linux/sunrpc/stats.h:72:63: error: parameter name omitted include/linux/sunrpc/stats.h:73:46: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'net' Signed-off-by: Randy Dunlap <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: register RPC stats /proc entries in passed network namespace contextStanislav Kinsbursky1-4/+4
This patch makes it possible to create NFS program entry ("/proc/net/rpc/nfs") in passed network namespace context instead of hard-coded "init_net". Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: generic cache register routines removedStanislav Kinsbursky1-2/+0
All cache users now uses network-namespace-aware routines, so generic ones are obsolete. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]> Acked-by: J. Bruce Fields <[email protected]>
2012-01-31SUNRPC: create GSS auth cache per network namespaceStanislav Kinsbursky1-0/+2
This patch makes GSS auth cache details allocated and registered per network namespace context. Thus with this patch rsi_cache and rsc_cache contents for network namespace "X" are controlled from proc file system mount for the same network namespace "X". Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]> Acked-by: J. Bruce Fields <[email protected]>
2012-01-31SUNRPC: cache creation and destruction routines introducedStanislav Kinsbursky1-0/+4
This patch prepares infrastructure for network namespace aware cache detail allocation. One note about adding network namespace link to cache structure. It's going to be used later in NFS DNS cache parsing routine (nfs_dns_parse for rpc_pton() call). Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]> Acked-by: J. Bruce Fields <[email protected]>
2012-01-31SUNRPC: unregister service on creation in current network namespaceStanislav Kinsbursky1-4/+5
On service shutdown we can be sure, that no more users of it left except current. Thus it looks like using current network namespace context is safe in this case. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: pass network namespace to service registering routinesStanislav Kinsbursky1-1/+1
Lockd and NFSd services will handle requests from and to many network nsamespaces. And thus have to be registered and unregistered per network namespace. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: parametrize rpc_uaddr2sockaddr() by network contextStanislav Kinsbursky1-1/+1
Parametrize rpc_uaddr2sockaddr() by network context and thus force it's callers to pass in network context instead of using hard-coded "init_net". Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: parametrize rpc_pton() by network contextStanislav Kinsbursky1-1/+1
Parametrize rpc_pton() by network context and thus force it's callers to pass in network context instead of using hard-coded "init_net". Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: parametrize local rpcbind clients creation with net nsStanislav Kinsbursky1-2/+2
These client are per network namespace and thus can be created for different network namespaces. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: register rpcbind programs in passed network namespase contextStanislav Kinsbursky1-2/+3
Registering rpcbind program requires rpcbind clients, which are per network namespace context. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: Fix potential races in xprt_lock_write_next()Trond Myklebust1-0/+3
We have to ensure that the wake up from the waitqueue and the assignment of xprt->snd_task are atomic. We can do this by assigning the snd_task while under the waitqueue spinlock. Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: kernel PipeFS mount point creation routines removedStanislav Kinsbursky1-2/+0
This patch removes static rpc_mnt variable and its creation and destruction routines, because they are not used anymore. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31NFS: idmap PipeFS notifier introducedStanislav Kinsbursky1-0/+7
v2: 1) Added "nfs_idmap_init" and "nfs_idmap_quit" definitions for kernels built without CONFIG_NFS_V4 option set. This patch subscribes NFS clients to RPC pipefs notifications. Idmap notifier is registering on NFS module load. This notifier callback is responsible for creation/destruction of PipeFS idmap pipe dentry for NFS4 clients. Since ipdmap pipe is created in rpc client pipefs directory, we have make sure, that this directory has been created already. IOW RPC client notifier callback has been called already. To achive this, PipeFS notifier priorities has been introduced (RPC clients notifier priority is greater than NFS idmap one). But this approach gives another problem: unlink for RPC client directory will be called before NFS idmap pipe unlink on UMOUNT event and will fail, because directory is not empty. The solution, introduced in this patch, is to try to remove client directory once again after idmap pipe was unlinked. This looks like ugly hack, so probably it should be replaced in some more elegant way. Note that no locking required in notifier callback because PipeFS superblock pointer is passed as an argument from it's creation or destruction routine and thus we can be sure about it's validity. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: split cache creation and PipeFS registrationStanislav Kinsbursky1-0/+2
This precursor patch splits SUNRPC cache creation and PipeFS registartion. It's required for latter split of NFS DNS resolver cache creation per network namespace context and PipeFS registration/unregistration on MOUNT/UMOUNT events. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: remove RPC PipeFS mount point reference from RPC clientStanislav Kinsbursky1-1/+1
This is a cleanup patch. We don't need this reference anymore. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: subscribe RPC clients to pipefs notificationsStanislav Kinsbursky1-0/+2
This patch subscribes RPC clients to RPC pipefs notifications. RPC clients notifier block is registering with pipefs initialization during SUNRPC module init. This notifier callback is responsible for RPC client PipeFS directory and GSS pipes creation. For pipes creation and destruction two additional callbacks were added to struct rpc_authops. Note that no locking required in notifier callback because PipeFS superblock pointer is passed as an argument from it's creation or destruction routine and thus we can be sure about it's validity. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: make SUNPRC clients list per network namespace contextStanislav Kinsbursky1-1/+2
This patch moves static SUNRPC clients list and it's lock to sunrpc_net structure. Currently this list is used only for debug purposes. But later it will be used also for selecting clients by networks namespace on PipeFS mount/umount events. Per-network namespace lists will make this faster and simplier. Note: client list is taken from "init_net" network namespace context in rpc_show_tasks(). This will be changed some day later with making SUNRPC sysctl's per network namespace context. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: split SUNPRC PipeFS dentry and private pipe data creationStanislav Kinsbursky1-2/+5
This patch is a final step towards to removing PipeFS inode references from kernel code other than PipeFS itself. It makes all kernel SUNRPC PipeFS users depends on pipe private data, which state depend on their specific operations, etc. This patch completes SUNRPC PipeFS preparations and allows to create pipe private data and PipeFS dentries independently. Next step will be making SUNPRC PipeFS dentries allocated by SUNRPC PipeFS network namespace aware routines. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNPRC: cleanup RPC PipeFS pipes upcall interfaceStanislav Kinsbursky1-1/+1
RPC pipe upcall doesn't requires only private pipe data. Thus RPC inode references in this code can be removed. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: split SUNPRC PipeFS pipe data and inode creationStanislav Kinsbursky1-3/+7
Generally, pipe data is used only for pipes, and thus allocating space for it on every RPC inode allocation is redundant. This patch splits private SUNRPC PipeFS pipe data and inode, makes pipe data allocated only for pipe inodes. This patch is also is a next step towards to to removing PipeFS inode references from kernel code other than PipeFS itself. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: replace inode lock with pipe lock for RPC PipeFS operationsStanislav Kinsbursky1-0/+1
Currenly, inode i_lock is used to provide concurrent access to SUNPRC PipeFS pipes. It looks redundant, since now other use of inode is present in most of these places and thus can be easely replaced, which will allow to remove most of inode references from PipeFS code. This is a first step towards to removing PipeFS inode references from kernel code other than PipeFS itself. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: pipefs per-net operations helper introducedStanislav Kinsbursky1-0/+3
During per-net pipes creation and destruction we have to make sure, that pipefs sb exists for the whole creation/destruction cycle. This is done by using special mutex which controls pipefs sb reference on network namespace context. Helper consists of two parts: first of them (rpc_get_dentry_net) searches for dentry with specified name and returns with mutex taken on success. When pipe creation or destructions is completed, caller should release this mutex by rpc_put_dentry_net call. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: pipefs dentry lookup helper introducedStanislav Kinsbursky1-0/+3
In all places, where pipefs dentries are created, only directory inode is actually required to create new dentry. And all this directories has root pipefs dentry as their parent. So we actually don't need this pipefs mount point at all if some pipefs lookup method will be provided. IOW, all we really need is just superblock and simple lookup method to find root's child dentry with appropriate name. And this patch introduces this method. Note, that no locking implemented in rpc_d_lookup_sb(). So it can be used only in case of assurance, that pipefs superblock still exist. IOW, we can use this method only in pipefs mount-umount notification subscribers callbacks. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: send notification events on pipefs sb creation and destructionStanislav Kinsbursky1-0/+8
They will be used to notify subscribers about pipefs superblock creation and destruction. Subcribers will have to create their dentries on passed superblock on mount event and destroy otherwise. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-31SUNRPC: remove non-exclusive pipe creation from RPC pipefsStanislav Kinsbursky1-1/+0
This patch-set was created in context of clone of git branch: git://git.linux-nfs.org/projects/trondmy/nfs-2.6.git. v2: 1) Rebased of current repo state (i.e. all commits were pulled before apply) I feel it is ready for inclusion if no objections will appear. SUNRPC pipefs non-exclusive pipe creation code looks obsolete. IOW, as I see it, all pipes are creating with unique full path and only once. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-14Merge branch 'for-3.3' of git://linux-nfs.org/~bfields/linuxLinus Torvalds2-3/+2
* 'for-3.3' of git://linux-nfs.org/~bfields/linux: (31 commits) nfsd4: nfsd4_create_clid_dir return value is unused NFSD: Change name of extended attribute containing junction svcrpc: don't revert to SVC_POOL_DEFAULT on nfsd shutdown svcrpc: fix double-free on shutdown of nfsd after changing pool mode nfsd4: be forgiving in the absence of the recovery directory nfsd4: fix spurious 4.1 post-reboot failures NFSD: forget_delegations should use list_for_each_entry_safe NFSD: Only reinitilize the recall_lru list under the recall lock nfsd4: initialize special stateid's at compile time NFSd: use network-namespace-aware cache registering routines SUNRPC: create svc_xprt in proper network namespace svcrpc: update outdated BKL comment nfsd41: allow non-reclaim open-by-fh's in 4.1 svcrpc: avoid memory-corruption on pool shutdown svcrpc: destroy server sockets all at once svcrpc: make svc_delete_xprt static nfsd: Fix oops when parsing a 0 length export nfsd4: Use kmemdup rather than duplicating its implementation nfsd4: add a separate (lockowner, inode) lookup nfsd4: fix CONFIG_NFSD_FAULT_INJECTION compile error ...
2012-01-10Merge branch 'nfs-for-3.3' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds3-2/+5
* 'nfs-for-3.3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: NFSv4: Change the default setting of the nfs4_disable_idmapping parameter NFSv4: Save the owner/group name string when doing open NFS: Remove pNFS bloat from the generic write path pnfs-obj: Must return layout on IO error pnfs-obj: pNFS errors are communicated on iodata->pnfs_error NFS: Cache state owners after files are closed NFS: Clean up nfs4_find_state_owners_locked() NFSv4: include bitmap in nfsv4 get acl data nfs: fix a minor do_div portability issue NFSv4.1: cleanup comment and debug printk NFSv4.1: change nfs4_free_slot parameters for dynamic slots NFSv4.1: cleanup init and reset of session slot tables NFSv4.1: fix backchannel slotid off-by-one bug nfs: fix regression in handling of context= option in NFSv4 NFS - fix recent breakage to NFS error handling. NFS: Retry mounting NFSROOT SUNRPC: Clean up the RPCSEC_GSS service ticket requests
2012-01-08Merge branch 'for-linus2' of ↵Linus Torvalds2-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs * 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (165 commits) reiserfs: Properly display mount options in /proc/mounts vfs: prevent remount read-only if pending removes vfs: count unlinked inodes vfs: protect remounting superblock read-only vfs: keep list of mounts for each superblock vfs: switch ->show_options() to struct dentry * vfs: switch ->show_path() to struct dentry * vfs: switch ->show_devname() to struct dentry * vfs: switch ->show_stats to struct dentry * switch security_path_chmod() to struct path * vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb vfs: trim includes a bit switch mnt_namespace ->root to struct mount vfs: take /proc/*/mounts and friends to fs/proc_namespace.c vfs: opencode mntget() mnt_set_mountpoint() vfs: spread struct mount - remaining argument of next_mnt() vfs: move fsnotify junk to struct mount vfs: move mnt_devname vfs: move mnt_list to struct mount vfs: switch pnode.h macros to struct mount * ...
2012-01-05NFSv4: include bitmap in nfsv4 get acl dataAndy Adamson1-0/+2
The NFSv4 bitmap size is unbounded: a server can return an arbitrary sized bitmap in an FATTR4_WORD0_ACL request. Replace using the nfs4_fattr_bitmap_maxsz as a guess to the maximum bitmask returned by a server with the inclusion of the bitmap (xdr length plus bitmasks) and the acl data xdr length to the (cached) acl page data. This is a general solution to commit e5012d1f "NFSv4.1: update nfs4_fattr_bitmap_maxsz" and fixes hitting a BUG_ON in xdr_shrink_bufhead when getting ACLs. Fix a bug in decode_getacl that returned -EINVAL on ACLs > page when getxattr was called with a NULL buffer, preventing ACL > PAGE_SIZE from being retrieved. Cc: [email protected] Signed-off-by: Andy Adamson <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-01-05SUNRPC: Clean up the RPCSEC_GSS service ticket requestsTrond Myklebust2-2/+3
Instead of hacking specific service names into gss_encode_v1_msg, we should just allow the caller to specify the service name explicitly. Signed-off-by: Trond Myklebust <[email protected]> Acked-by: J. Bruce Fields <[email protected]>
2012-01-03sunrpc: propagate umode_tAl Viro2-2/+2
Signed-off-by: Al Viro <[email protected]>
2011-12-11net: use IS_ENABLED(CONFIG_IPV6)Eric Dumazet1-3/+3
Instead of testing defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) Signed-off-by: Eric Dumazet <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-12-06SUNRPC: create svc_xprt in proper network namespaceStanislav Kinsbursky1-1/+1
This patch makes svc_xprt inherit network namespace link from its socket. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
2011-12-06svcrpc: destroy server sockets all at onceJ. Bruce Fields1-1/+1
There's no reason I can see that we need to call sv_shutdown between closing the two lists of sockets. Cc: [email protected] Signed-off-by: J. Bruce Fields <[email protected]>
2011-12-06svcrpc: make svc_delete_xprt staticJ. Bruce Fields1-1/+0
Signed-off-by: J. Bruce Fields <[email protected]>
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