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2010-09-25net: fix a lockdep splatEric Dumazet1-14/+14
We have for each socket : One spinlock (sk_slock.slock) One rwlock (sk_callback_lock) Possible scenarios are : (A) (this is used in net/sunrpc/xprtsock.c) read_lock(&sk->sk_callback_lock) (without blocking BH) <BH> spin_lock(&sk->sk_slock.slock); ... read_lock(&sk->sk_callback_lock); ... (B) write_lock_bh(&sk->sk_callback_lock) stuff write_unlock_bh(&sk->sk_callback_lock) (C) spin_lock_bh(&sk->sk_slock) ... write_lock_bh(&sk->sk_callback_lock) stuff write_unlock_bh(&sk->sk_callback_lock) spin_unlock_bh(&sk->sk_slock) This (C) case conflicts with (A) : CPU1 [A] CPU2 [C] read_lock(callback_lock) <BH> spin_lock_bh(slock) <wait to spin_lock(slock)> <wait to write_lock_bh(callback_lock)> We have one problematic (C) use case in inet_csk_listen_stop() : local_bh_disable(); bh_lock_sock(child); // spin_lock_bh(&sk->sk_slock) WARN_ON(sock_owned_by_user(child)); ... sock_orphan(child); // write_lock_bh(&sk->sk_callback_lock) lockdep is not happy with this, as reported by Tetsuo Handa It seems only way to deal with this is to use read_lock_bh(callbacklock) everywhere. Thanks to Jarek for pointing a bug in my first attempt and suggesting this solution. Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Tested-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Jarek Poplawski <jarkao2@gmail.com> Tested-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-24net: return operator cleanupEric Dumazet5-26/+26
Change "return (EXPR);" to "return EXPR;" return is not a function, parentheses are not required. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-23net/sunrpc/rpc_pipe.c: Remove unnecessary casts of private_dataJoe Perches1-2/+2
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-09-22sunrpc/cache: fix recent breakage of cache_clean_deferredNeilBrown1-1/+3
commit 6610f720e9e8103c22d1f1ccf8fbb695550a571f broke cache_clean_deferred as entries are no longer added to the pending list for subsequent revisiting. So put those requests back on the pending list. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2010-09-22sunrpc/cache: don't use custom hex_to_bin() converterAndy Shevchenko1-7/+13
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: linux-nfs@vger.kernel.org Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2010-09-22sunrpc/cache: change deferred-request hash table to use hlist.NeilBrown1-18/+10
Being a hash table, hlist is the best option. There is currently some ugliness were we treat "->next == NULL" as a special case to avoid having to initialise the whole array. This change nicely gets rid of that case. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2010-09-22svcauth_gss: replace a trivial 'switch' with an 'if'NeilBrown1-22/+19
Code like: switch(xxx) { case -error1: case -error2: .. return; case 0: stuff; } can more naturally be written: if (xxx < 0) return; stuff; Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2010-09-22sunrpc: close connection when a request is irretrievably lost.NeilBrown3-9/+17
If we drop a request in the sunrpc layer, either due kmalloc failure, or due to a cache miss when we could not queue the request for later replay, then close the connection to encourage the client to retry sooner. Note that if the drop happens in the NFS layer, NFSERR_JUKEBOX (aka NFS4ERR_DELAY) is returned to guide the client concerning replay. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2010-09-22SUNRPC: Refactor logic to NUL-terminate strings in pagesChuck Lever1-0/+17
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>
2010-09-22SUNRPC: Correct an rpcbind debugging messageChuck Lever1-2/+3
Clean up. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-22SUNRPC: Convert rpciod to use the alloc_workqueue() interfaceTrond Myklebust1-1/+1
create_workqueue() is a deprecated function. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-20nfsd4: fix hang on fast-booting nfs serversJ. Bruce Fields1-4/+20
The last_close field of a cache_detail is initialized to zero, so the condition detail->last_close < seconds_since_boot() - 30 may be false even for a cache that was never opened. However, we want to immediately fail upcalls to caches that were never opened: in the case of the auth_unix_gid cache, especially, which may never be opened by mountd (if the --manage-gids option is not set), we want to fail the upcall immediately. Otherwise client requests will be dropped unnecessarily on reboot. Also document these conditions. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2010-09-20Merge remote branch 'trond/bugfixes' into for-2.6.37J. Bruce Fields6-76/+86
Without some client-side fixes, server testing is currently difficult.
2010-09-17SUNRPC: Remove rpcb_getport_sync()Chuck Lever1-51/+0
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>
2010-09-13sunrpc: increase MAX_HASHTABLE_BITS to 14Miquel van Smoorenburg1-1/+1
The maximum size of the authcache is now set to 1024 (10 bits), but on our server we need at least 4096 (12 bits). Increase MAX_HASHTABLE_BITS to 14. This is a maximum of 16384 entries, each containing a pointer (8 bytes on x86_64). This is exactly the limit of kmalloc() (128K). Signed-off-by: Miquel van Smoorenburg <mikevs@xs4all.net> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-13gss:spkm3 miss returning error to caller when import security contextBian Naimeng1-1/+4
spkm3 miss returning error to up layer when import security context, it may be return ok though it has failed to import security context. Signed-off-by: Bian Naimeng <biannm@cn.fujitsu.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-13gss:krb5 miss returning error to caller when import security contextBian Naimeng1-2/+8
krb5 miss returning error to up layer when import security context, it may be return ok though it has failed to import security context. Signed-off-by: Bian Naimeng <biannm@cn.fujitsu.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-13SUNRPC: cleanup state-machine orderingJ. Bruce Fields1-42/+42
This is just a minor cleanup: net/sunrpc/clnt.c clarifies the rpc client state machine by commenting each state and by laying out the functions implementing each state in the order that each state is normally executed (in the absence of errors). The previous patch "Fix null dereference in call_allocate" changed the order of the states. Move the functions and update the comments to reflect the change. Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-13SUNRPC: Fix a race in rpc_info_openTrond Myklebust2-20/+20
There is a race between rpc_info_open and rpc_release_client() in that nothing stops a process from opening the file after the clnt->cl_kref goes to zero. Fix this by using atomic_inc_unless_zero()... Reported-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@kernel.org
2010-09-13SUNRPC: Fix race corrupting rpc upcallTrond Myklebust2-7/+8
If rpc_queue_upcall() adds a new upcall to the rpci->pipe list just after rpc_pipe_release calls rpc_purge_list(), but before it calls gss_pipe_release (as rpci->ops->release_pipe(inode)), then the latter will free a message without deleting it from the rpci->pipe list. We will be left with a freed object on the rpc->pipe list. Most frequent symptoms are kernel crashes in rpc.gssd system calls on the pipe in question. Reported-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@kernel.org
2010-09-13Fix null dereference in call_allocateJ. Bruce Fields1-4/+4
In call_allocate we need to reach the auth in order to factor au_cslack into the allocation. As of a17c2153d2e271b0cbacae9bed83b0eaa41db7e1 "SUNRPC: Move the bound cred to struct rpc_rqst", call_allocate attempts to do this by dereferencing tk_client->cl_auth, however this is not guaranteed to be defined--cl_auth can be zero in the case of gss context destruction (see rpc_free_auth). Reorder the client state machine to bind credentials before allocating, so that we can instead reach the auth through the cred. Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@kernel.org
2010-09-08svcrpc: cache deferral cleanupJ. Bruce Fields1-64/+79
Attempt to make obvious the first-try-sleeping-then-try-deferral logic by putting that logic into a top-level function that calls helpers. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2010-09-08svcrpc: minor cache cleanupJ. Bruce Fields2-21/+25
Pull out some code into helper functions, fix a typo. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2010-09-08sunrpc/cache: allow threads to block while waiting for cache update.NeilBrown2-1/+69
The current practice of waiting for cache updates by queueing the whole request to be retried has (at least) two problems. 1/ With NFSv4, requests can be quite complex and re-trying a whole request when a later part fails should only be a last-resort, not a normal practice. 2/ Large requests, and in particular any 'write' request, will not be queued by the current code and doing so would be undesirable. In many cases only a very sort wait is needed before the cache gets valid data. So, providing the underlying transport permits it by setting ->thread_wait, arrange to wait briefly for an upcall to be completed (as reflected in the clearing of CACHE_PENDING). If the short wait was not long enough and CACHE_PENDING is still set, fall back on the old approach. The 'thread_wait' value is set to 5 seconds when there are spare threads, and 1 second when there are no spare threads. These values are probably much higher than needed, but will ensure some forward progress. Note that as we only request an update for a non-valid item, and as non-valid items are updated in place it is extremely unlikely that cache_check will return -ETIMEDOUT. Normally cache_defer_req will sleep for a short while and then find that the item is_valid. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2010-09-08sunrpc: use seconds since boot in expiry cacheNeilBrown1-17/+19
This protects us from confusion when the wallclock time changes. We convert to and from wallclock when setting or reading expiry times. Also use seconds since boot for last_clost time. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2010-08-29SUNRPC: Don't truncate tail data unnecessarily in xdr_shrink_pagelenTrond Myklebust1-1/+10
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 Halevy1-4/+3
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 Halevy1-2/+1
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 Halevy1-2/+1
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 Halevy1-2/+1
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>
2010-08-19Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds4-15/+46
* '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 the selection of security flavours in KconfigTrond Myklebust1-4/+5
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>
2010-08-11rpcrdma: Fix SQ size calculation when memreg is FRMRTom Tucker2-4/+18
This patch updates the computation to include the worst case situation where three FRMR are required to map a single RPC REQ. Signed-off-by: Tom Tucker <tom@ogc.us> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-11xprtrdma: Do not truncate iova_start values in frmr registrations.Steve Wise1-1/+1
A bad cast causes the iova_start, which in this case is a 64b DMA bus address, to be truncated on 32b systems. This breaks frmrs on 32b systems. No cast is needed. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-11nfs: update for module_param_named API changeStephen Rothwell1-2/+7
After merging the rr tree, today's linux-next build (powerpc ppc64_defconfig) failed like this: net/sunrpc/auth.c:74: error: 'param_ops_hashtbl_sz' undeclared here (not in a function) Caused by commit 0685652df0929cec7d78efa85127f6eb34962132 ("param:param_ops") interacting with commit f8f853ab19fcc415b6eadd273373edc424916212 ("SUNRPC: Make the credential cache hashtable size configurable") from the nfs tree. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-08-11param: use ops in struct kernel_param, rather than get and set fns directlyRusty Russell1-11/+15
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
2010-08-10SUNRPC: fix NFS client over TCP hangs due to packet loss (Bug 16494)Andy Chittenden1-6/+22
When reusing a TCP connection, ensure that it's aborted if a previous shutdown attempt has been made on that connection so that the RPC over TCP recovery mechanism succeeds. Signed-off-by: Andy Chittenden <andyc.bluearc@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-08Merge branch 'for-2.6.36' of git://linux-nfs.org/~bfields/linuxLinus Torvalds2-2/+7
* 'for-2.6.36' of git://linux-nfs.org/~bfields/linux: (34 commits) nfsd4: fix file open accounting for RDWR opens nfsd: don't allow setting maxblksize after svc created nfsd: initialize nfsd versions before creating svc net: sunrpc: removed duplicated #include nfsd41: Fix a crash when a callback is retried nfsd: fix startup/shutdown order bug nfsd: minor nfsd read api cleanup gcc-4.6: nfsd: fix initialized but not read warnings nfsd4: share file descriptors between stateid's nfsd4: fix openmode checking on IO using lock stateid nfsd4: miscellaneous process_open2 cleanup nfsd4: don't pretend to support write delegations nfsd: bypass readahead cache when have struct file nfsd: minor nfsd_svc() cleanup nfsd: move more into nfsd_startup() nfsd: just keep single lockd reference for nfsd nfsd: clean up nfsd_create_serv error handling nfsd: fix error handling in __write_ports_addxprt nfsd: fix error handling when starting nfsd with rpcbind down nfsd4: fix v4 state shutdown error paths ...
2010-08-08Merge branch 'nfs-for-2.6.36' of ↵Linus Torvalds9-235/+301
git://git.linux-nfs.org/projects/trondmy/nfs-2.6 * '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 ...
2010-08-07net: sunrpc: removed duplicated #includeAndrea Gelmini1-1/+0
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2010-08-04SUNRPC: Defer deleting the security context until gss_do_free_ctx()Trond Myklebust1-6/+1
There is no need to delete the gss context separately from the rest of the security context information, and doing so gives rise to a an rcu_dereference_check() warning. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-04SUNRPC: prevent task_cleanup running on freed xprtJ. Bruce Fields1-0/+1
We saw a report of a NULL dereference in xprt_autoclose: https://bugzilla.redhat.com/show_bug.cgi?id=611938 This appears to be the result of an xprt's task_cleanup running after the xprt is destroyed. Nothing in the current code appears to prevent that. Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-04SUNRPC: Reduce asynchronous RPC task stack usageTrond Myklebust1-2/+3
We should just farm out asynchronous RPC tasks immediately to rpciod... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-04SUNRPC: Move the bound cred to struct rpc_rqstTrond Myklebust7-85/+83
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>
2010-08-04SUNRPC: Clean up of rpc_bindcred()Trond Myklebust3-29/+21
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-04SUNRPC: Move remaining RPC client related task initialisation into clnt.cTrond Myklebust2-73/+88
Now that rpc_run_task() is the sole entry point for RPC calls, we can move the remaining rpc_client-related initialisation of struct rpc_task from sched.c into clnt.c. Also move rpc_killall_tasks() into the same file, since that too is relative to the rpc_clnt. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-04SUNRPC: Ensure that rpc_exit() always wakes up a sleeping taskTrond Myklebust1-11/+9
Make rpc_exit() non-inline, and ensure that it always wakes up a task that has been queued. Kill off the now unused rpc_wake_up_task(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-04SUNRPC: Make the credential cache hashtable size configurableTrond Myklebust1-5/+55
This patch allows the user to configure the credential cache hashtable size using a new module parameter: auth_hashtable_size When set, this parameter will be rounded up to the nearest power of two, with a maximum allowed value of 1024 elements. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-04SUNRPC: Store the hashtable size in struct rpc_cred_cacheTrond Myklebust1-3/+7
Cleanup in preparation for allowing the user to determine the maximum hash table size. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-04NFS: Ensure the AUTH_UNIX credcache is allocated dynamicallyTrond Myklebust4-25/+36
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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