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2010-12-14NFS: Don't SIGBUS if nfs_vm_page_mkwrite races with a cache invalidationTrond Myklebust
commit bc4866b6e0b44f8ea0df22a16e5927714beb4983 upstream. In the case where we lock the page, and then find out that the page has been thrown out of the page cache, we should just return VM_FAULT_NOPAGE. This is what block_page_mkwrite() does in these situations. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Andi Kleen <ak@linux.intel.com>
2010-12-14NFSv4: Fix open recoveryTrond Myklebust
commit b0ed9dbc24f1fd912b2dd08b995153cafc1d5b1c upstream. NFSv4 open recovery is currently broken: since we do not clear the state->flags states before attempting recovery, we end up with the 'can_open_cached()' function triggering. This again leads to no OPEN call being put on the wire. Reported-by: Sachin Prabhu <sprabhu@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Andi Kleen <ak@linux.intel.com>
2010-12-14NFSv4: Don't call nfs4_state_mark_reclaim_reboot() from error handlersTrond Myklebust
commit ae1007d37e00144b72906a4bdc47d517ae91bcc1 upstream. In the case of a server reboot, the state recovery thread starts by calling nfs4_state_end_reclaim_reboot() in order to avoid edge conditions when the server reboots while the client is in the middle of recovery. However, if the client has already marked the nfs4_state as requiring reboot recovery, then the above behaviour will cause the recovery thread to treat the open as if it was part of such an edge condition: the open will be recovered as if it was part of a lease expiration (and all the locks will be lost). Fix is to remove the call to nfs4_state_mark_reclaim_reboot from nfs4_async_handle_error(), and nfs4_handle_exception(). Instead we leave it to the recovery thread to do this for us. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Andi Kleen <ak@linux.intel.com>
2010-12-14NFSv4: Don't call nfs4_reclaim_complete() on receiving NFS4ERR_STALE_CLIENTIDTrond Myklebust
commit 6eaa61496fb3b93cceface7a296415fc4c030bce upstream. If the server sends us an NFS4ERR_STALE_CLIENTID while the state management thread is busy reclaiming state, we do want to treat all state that wasn't reclaimed before the STALE_CLIENTID as if a network partition occurred (see the edge conditions described in RFC3530 and RFC5661). What we do not want to do is to send an nfs4_reclaim_complete(), since we haven't yet even started reclaiming state after the server rebooted. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Andi Kleen <ak@linux.intel.com>
2010-09-20NFS: Fix a typo in nfs_sockaddr_match_ipaddr6Trond Myklebust
commit b20d37ca9561711c6a3c4b859c2855f49565e061 upstream. Reported-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-09-20statfs() gives ESTALE errorMenyhart Zoltan
commit fbf3fdd2443965d9ba6fb4b5fecd1f6e0847218f upstream. Hi, An NFS client executes a statfs("file", &buff) call. "file" exists / existed, the client has read / written it, but it has already closed it. user_path(pathname, &path) looks up "file" successfully in the directory-cache and restarts the aging timer of the directory-entry. Even if "file" has already been removed from the server, because the lookupcache=positive option I use, keeps the entries valid for a while. nfs_statfs() returns ESTALE if "file" has already been removed from the server. If the user application repeats the statfs("file", &buff) call, we are stuck: "file" remains young forever in the directory-cache. Signed-off-by: Zoltan Menyhart <Zoltan.Menyhart@bull.net> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-26NFS: Fix an Oops in the NFSv4 atomic open codeTrond Myklebust
commit 0a377cff9428af2da2b293d11e07bc4dbf064ee5 upstream. Adam Lackorzynski reports: with 2.6.35.2 I'm getting this reproducible Oops: [ 110.825396] BUG: unable to handle kernel NULL pointer dereference at (null) [ 110.828638] IP: [<ffffffff811247b7>] encode_attrs+0x1a/0x2a4 [ 110.828638] PGD be89f067 PUD bf18f067 PMD 0 [ 110.828638] Oops: 0000 [#1] SMP [ 110.828638] last sysfs file: /sys/class/net/lo/operstate [ 110.828638] CPU 2 [ 110.828638] Modules linked in: rtc_cmos rtc_core rtc_lib amd64_edac_mod i2c_amd756 edac_core i2c_core dm_mirror dm_region_hash dm_log dm_snapshot sg sr_mod usb_storage ohci_hcd mptspi tg3 mptscsih mptbase usbcore nls_base [last unloaded: scsi_wait_scan] [ 110.828638] [ 110.828638] Pid: 11264, comm: setchecksum Not tainted 2.6.35.2 #1 [ 110.828638] RIP: 0010:[<ffffffff811247b7>] [<ffffffff811247b7>] encode_attrs+0x1a/0x2a4 [ 110.828638] RSP: 0000:ffff88003bf5b878 EFLAGS: 00010296 [ 110.828638] RAX: ffff8800bddb48a8 RBX: ffff88003bf5bb18 RCX: 0000000000000000 [ 110.828638] RDX: ffff8800be258800 RSI: 0000000000000000 RDI: ffff88003bf5b9f8 [ 110.828638] RBP: 0000000000000000 R08: ffff8800bddb48a8 R09: 0000000000000004 [ 110.828638] R10: 0000000000000003 R11: ffff8800be779000 R12: ffff8800be258800 [ 110.828638] R13: ffff88003bf5b9f8 R14: ffff88003bf5bb20 R15: ffff8800be258800 [ 110.828638] FS: 0000000000000000(0000) GS:ffff880041e00000(0063) knlGS:00000000556bd6b0 [ 110.828638] CS: 0010 DS: 002b ES: 002b CR0: 000000008005003b [ 110.828638] CR2: 0000000000000000 CR3: 00000000be8ef000 CR4: 00000000000006e0 [ 110.828638] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 110.828638] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 110.828638] Process setchecksum (pid: 11264, threadinfo ffff88003bf5a000, task ffff88003f232210) [ 110.828638] Stack: [ 110.828638] 0000000000000000 ffff8800bfbcf920 0000000000000000 0000000000000ffe [ 110.828638] <0> 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 110.828638] <0> 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 110.828638] Call Trace: [ 110.828638] [<ffffffff81124c1f>] ? nfs4_xdr_enc_setattr+0x90/0xb4 [ 110.828638] [<ffffffff81371161>] ? call_transmit+0x1c3/0x24a [ 110.828638] [<ffffffff813774d9>] ? __rpc_execute+0x78/0x22a [ 110.828638] [<ffffffff81371a91>] ? rpc_run_task+0x21/0x2b [ 110.828638] [<ffffffff81371b7e>] ? rpc_call_sync+0x3d/0x5d [ 110.828638] [<ffffffff8111e284>] ? _nfs4_do_setattr+0x11b/0x147 [ 110.828638] [<ffffffff81109466>] ? nfs_init_locked+0x0/0x32 [ 110.828638] [<ffffffff810ac521>] ? ifind+0x4e/0x90 [ 110.828638] [<ffffffff8111e2fb>] ? nfs4_do_setattr+0x4b/0x6e [ 110.828638] [<ffffffff8111e634>] ? nfs4_do_open+0x291/0x3a6 [ 110.828638] [<ffffffff8111ed81>] ? nfs4_open_revalidate+0x63/0x14a [ 110.828638] [<ffffffff811056c4>] ? nfs_open_revalidate+0xd7/0x161 [ 110.828638] [<ffffffff810a2de4>] ? do_lookup+0x1a4/0x201 [ 110.828638] [<ffffffff810a4733>] ? link_path_walk+0x6a/0x9d5 [ 110.828638] [<ffffffff810a42b6>] ? do_last+0x17b/0x58e [ 110.828638] [<ffffffff810a5fbe>] ? do_filp_open+0x1bd/0x56e [ 110.828638] [<ffffffff811cd5e0>] ? _atomic_dec_and_lock+0x30/0x48 [ 110.828638] [<ffffffff810a9b1b>] ? dput+0x37/0x152 [ 110.828638] [<ffffffff810ae063>] ? alloc_fd+0x69/0x10a [ 110.828638] [<ffffffff81099f39>] ? do_sys_open+0x56/0x100 [ 110.828638] [<ffffffff81027a22>] ? ia32_sysret+0x0/0x5 [ 110.828638] Code: 83 f1 01 e8 f5 ca ff ff 48 83 c4 50 5b 5d 41 5c c3 41 57 41 56 41 55 49 89 fd 41 54 49 89 d4 55 48 89 f5 53 48 81 ec 18 01 00 00 <8b> 06 89 c2 83 e2 08 83 fa 01 19 db 83 e3 f8 83 c3 18 a8 01 8d [ 110.828638] RIP [<ffffffff811247b7>] encode_attrs+0x1a/0x2a4 [ 110.828638] RSP <ffff88003bf5b878> [ 110.828638] CR2: 0000000000000000 [ 112.840396] ---[ end trace 95282e83fd77358f ]--- We need to ensure that the O_EXCL flag is turned off if the user doesn't set O_CREAT. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-26nfs: Add "lookupcache" to displayed mount optionsPatrick J. LoPresti
commit 9b00c64318cc337846a7a08a5678f5f19aeff188 upstream. Running "cat /proc/mounts" fails to display the "lookupcache" option. This oversight cost me a bunch of wasted time recently. The following simple patch fixes it. Signed-off-by: Patrick LoPresti <lopresti@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-01NFS: Fix a typo in include/linux/nfs_fs.hTrond Myklebust
nfs_commit_inode() needs to be defined irrespectively of whether or not we are supporting NFSv3 and NFSv4. Allow the compiler to optimise away code in the NFSv2-only case by converting it into an inlined stub function. Reported-and-tested-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-07-30NFS: Ensure that writepage respects the nonblock flagTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-07-30NFS: kswapd must not block in nfs_release_pageTrond Myklebust
See https://bugzilla.kernel.org/show_bug.cgi?id=16056 If other processes are blocked waiting for kswapd to free up some memory so that they can make progress, then we cannot allow kswapd to block on those processes. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@kernel.org
2010-07-30nfs: include space for the NUL in root pathDan Carpenter
In root_nfs_name() it does the following: if (strlen(buf) + strlen(cp) > NFS_MAXPATHLEN) { printk(KERN_ERR "Root-NFS: Pathname for remote directory too long.\n"); return -1; } sprintf(nfs_export_path, buf, cp); In the original code if (strlen(buf) + strlen(cp) == NFS_MAXPATHLEN) then the sprintf() would lead to an overflow. Generally the rest of the code assumes that the path can have NFS_MAXPATHLEN (1024) characters and a NUL terminator so the fix is to add space to the nfs_export_path[] buffer. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-07-19mm: add context argument to shrinker callbackDave Chinner
The current shrinker implementation requires the registered callback to have global state to work from. This makes it difficult to shrink caches that are not global (e.g. per-filesystem caches). Pass the shrinker structure to the callback so that users can embed the shrinker structure in the context the shrinker needs to operate on and get back to it in the callback via container_of(). Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2010-06-22NFSv4: Fix an embarassing typo in encode_attrs()Trond Myklebust
Apparently, we have never been able to set the atime correctly from the NFSv4 client. Reported-by: 小倉一夫 <ka-ogura@bd6.so-net.ne.jp> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@kernel.org
2010-06-22NFSv4: Ensure that /proc/self/mountinfo displays the minor version numberTrond Myklebust
Currently, we do not display the minor version mount parameter in the /proc mount info. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@kernel.org
2010-06-22NFSv4.1: Ensure that we initialise the session when following a referralTrond Myklebust
Put the code that is common to both the referral and ordinary mount cases into a common helper routine. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22nfs4 use mandatory attribute file type in nfs4_get_rootAndy Adamson
S_ISDIR(fsinfo.fattr->mode) checks the file type rather than the mode bits, so we should be checking for the NFS_ATTR_FATTR_TYPE fattr property. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@kernel.org
2010-05-27drop unused dentry argument to ->fsyncChristoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-26NFS: Fix another nfs_wb_page() deadlockTrond Myklebust
J.R. Okajima reports that the call to sync_inode() in nfs_wb_page() can deadlock with other writeback flush calls. It boils down to the fact that we cannot ever call writeback_single_inode() while holding a page lock (even if we do set nr_to_write to zero) since another process may already be waiting in the call to do_writepages(), and so will deny us the I_SYNC lock. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-26NFS: Ensure that we mark the inode as dirty if we exit early from commitTrond Myklebust
If we exit from nfs_commit_inode() without ensuring that the COMMIT rpc call has been completed, we must re-mark the inode as dirty. Otherwise, future calls to sync_inode() with the WB_SYNC_ALL flag set will fail to ensure that the data is on the disk. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-26NFS: Fix a lock imbalance typo in nfs_access_cache_shrinkerTrond Myklebust
Commit 9c7e7e23371e629dbb3b341610a418cdf1c19d91 (NFS: Don't call iput() in nfs_access_cache_shrinker) unintentionally removed the spin unlock for the inode->i_lock. Reported-by: David Howells <dhowells@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-25kernel-wide: replace USHORT_MAX, SHORT_MAX and SHORT_MIN with USHRT_MAX, ↵Alexey Dobriyan
SHRT_MAX and SHRT_MIN - C99 knows about USHRT_MAX/SHRT_MAX/SHRT_MIN, not USHORT_MAX/SHORT_MAX/SHORT_MIN. - Make SHRT_MIN of type s16, not int, for consistency. [akpm@linux-foundation.org: fix drivers/dma/timb_dma.c] [akpm@linux-foundation.org: fix security/keys/keyring.c] Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-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>
2010-05-14NFS: Don't call iput() in nfs_access_cache_shrinkerTrond Myklebust
iput() can potentially attempt to allocate memory, so we should avoid calling it in a memory shrinker. Instead, rely on the fact that iput() will call nfs_access_zap_cache(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Clean up nfs_access_zap_cache()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Don't run nfs_access_cache_shrinker() when the mask is GFP_NOFSTrond Myklebust
Both iput() and put_rpccred() might allocate memory under certain circumstances, so make sure that we don't recurse and deadlock... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Read requests can use GFP_KERNEL.Trond Myklebust
There is no danger of deadlock should the allocation trigger page writeback. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Clean up nfs_create_request()Trond Myklebust
There is no point in looping if we're out of memory. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFSv4: Don't use GFP_KERNEL allocations in state recoveryTrond Myklebust
We do not want to have the state recovery thread kick off and wait for a memory reclaim, since that may deadlock when the writebacks end up waiting for the state recovery thread to complete. The safe thing is therefore to use GFP_NOFS in all open, close, delegation return, lock, etc. operations that may be called by the state recovery thread. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Calldata for nfs4_renew_done()Chuck Lever
I'm about to change task->tk_start from a jiffies value to a ktime_t value in order to make RPC RTT reporting more precise. Recently (commit dc96aef9) nfs4_renew_done() started to reference task->tk_start so that a jiffies value no longer had to be passed from nfs4_proc_async_renew(). This allowed the calldata to point to an nfs_client instead. Changing task->tk_start to a ktime_t value makes it effectively useless for renew timestamps, so we need to restore the pre-dc96aef9 logic that provided a jiffies "start" timestamp to nfs4_renew_done(). Both an nfs_client pointer and a timestamp need to be passed to nfs4_renew_done(), so create a new nfs_renewdata structure that contains both, resembling what is already done for delegreturn, lock, and unlock. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Squelch compiler warning in nfs_add_server_stats()Chuck Lever
Clean up: fs/nfs/iostat.h: In function ‘nfs_add_server_stats’: fs/nfs/iostat.h:41: warning: comparison between signed and unsigned integer expressions fs/nfs/iostat.h:41: warning: comparison between signed and unsigned integer expressions fs/nfs/iostat.h:41: warning: comparison between signed and unsigned integer expressions fs/nfs/iostat.h:41: warning: comparison between signed and unsigned integer expressions Commit fce22848 replaced the open-coded per-cpu logic in several functions in fs/nfs/iostat.h with a single invocation of this_cpu_ptr(). This macro assumes its second argument is signed, not unsigned. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Clean up fscache_uniq mount optionChuck Lever
Clean up: fscache_uniq takes a string, so it should be included with the other string mount option definitions, by convention. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Squelch compiler warningChuck Lever
Seen with -Wextra: /home/cel/linux/fs/nfs/fscache.c: In function ‘__nfs_readpages_from_fscache’: /home/cel/linux/fs/nfs/fscache.c:479: warning: comparison between signed and unsigned integer expressions The comparison implicitly converts "int" to "unsigned", making it safe. But there's no need for the implicit type conversions here, and the dfprintk() already uses a "%u" formatter for "npages." Better to reduce confusion. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFSv4: Clean up the NFSv4 setclientid operationTrond Myklebust
Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFSv4: Allow attribute caching with 'noac' mounts if client holds a delegationTrond Myklebust
If the server has given us a delegation on a file, we _know_ that we can cache the attribute information even when the user has specified 'noac'. Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFSv4: Fix up the documentation for nfs_do_refmountTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Replace nfsroot on-stack filehandleTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Cleanup file handle allocations in fs/nfs/super.cTrond Myklebust
Use the new helper functions instead of open coding. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Prevent the mount code from looping forever on broken exportsTrond Myklebust
Keep a global count of how many referrals that the current task has traversed on a path lookup. Return ELOOP if the count exceeds MAX_NESTED_LINKS. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce stack footprint of nfs3_proc_getacl() and nfs3_proc_setacl()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce stack footprint of nfs_statfs()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce stack footprint of nfs_setattr()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce stack footprint of nfs4_proc_create()Trond Myklebust
Move the O_EXCL open handling into _nfs4_do_open() where it belongs. Doing so also allows us to reuse the struct fattr from the opendata. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce the stack footprint of nfs_proc_symlink()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce the stack footprint of nfs_proc_createTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce the stack footprint of nfs_rmdirTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce stack footprint of nfs_proc_remove()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce stack footprint of nfs3_proc_readlink()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce the stack footprint of nfs_link()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce stack footprint of nfs_readdir()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14NFS: Reduce stack footprint of nfs3_proc_rename() and nfs4_proc_rename()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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