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2016-09-22SUNRPC: Fix setting of buffer length in xdr_set_next_buffer()Trond Myklebust1-2/+2
Use xdr->nwords to tell us how much buffer remains. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2016-09-22SUNRPC: Fix corruption of xdr->nwords in xdr_copy_to_scratchTrond Myklebust1-2/+5
When we copy the first part of the data, we need to ensure that value of xdr->nwords is updated as well. Do so by calling __xdr_inline_decode() Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2016-05-09SUNRPC: init xdr_stream for zero iov_len, page_lenBenjamin Coddington1-0/+2
An xdr_buf with head[0].iov_len = 0 and page_len = 0 will cause xdr_init_decode() to incorrectly setup the xdr_stream. Specifically, xdr->end is never initialized. Signed-off-by: Benjamin Coddington <bcodding@redhat.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2016-04-04mm, fs: remove remaining PAGE_CACHE_* and page_cache_{get,release} usageKirill A. Shutemov1-1/+1
Mostly direct substitution with occasional adjustment or removing outdated comments. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-04-04mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macrosKirill A. Shutemov1-24/+24
PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} macros were introduced *long* time ago with promise that one day it will be possible to implement page cache with bigger chunks than PAGE_SIZE. This promise never materialized. And unlikely will. We have many places where PAGE_CACHE_SIZE assumed to be equal to PAGE_SIZE. And it's constant source of confusion on whether PAGE_CACHE_* or PAGE_* constant should be used in a particular case, especially on the border between fs and mm. Global switching to PAGE_CACHE_SIZE != PAGE_SIZE would cause to much breakage to be doable. Let's stop pretending that pages in page cache are special. They are not. The changes are pretty straight-forward: - <foo> << (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>; - <foo> >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>; - PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} -> PAGE_{SIZE,SHIFT,MASK,ALIGN}; - page_cache_get() -> get_page(); - page_cache_release() -> put_page(); This patch contains automated changes generated with coccinelle using script below. For some reason, coccinelle doesn't patch header files. I've called spatch for them manually. The only adjustment after coccinelle is revert of changes to PAGE_CAHCE_ALIGN definition: we are going to drop it later. There are few places in the code where coccinelle didn't reach. I'll fix them manually in a separate patch. Comments and documentation also will be addressed with the separate patch. virtual patch @@ expression E; @@ - E << (PAGE_CACHE_SHIFT - PAGE_SHIFT) + E @@ expression E; @@ - E >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) + E @@ @@ - PAGE_CACHE_SHIFT + PAGE_SHIFT @@ @@ - PAGE_CACHE_SIZE + PAGE_SIZE @@ @@ - PAGE_CACHE_MASK + PAGE_MASK @@ expression E; @@ - PAGE_CACHE_ALIGN(E) + PAGE_ALIGN(E) @@ expression E; @@ - page_cache_get(E) + get_page(E) @@ expression E; @@ - page_cache_release(E) + put_page(E) Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-01-07rpc: fix xdr_truncate_encode to handle buffer ending on page boundaryJ. Bruce Fields1-3/+3
A struct xdr_stream at a page boundary might point to the end of one page or the beginning of the next, but xdr_truncate_encode isn't prepared to handle the former. This can cause corruption of NFSv4 READDIR replies in the case that a readdir entry that would have exceeded the client's dircount/maxcount limit would have ended exactly on a 4k page boundary. You're more likely to hit this case on large directories. Other xdr_truncate_encode callers are probably also affected. Reported-by: Holger Hoffstätte <holger.hoffstaette@googlemail.com> Tested-by: Holger Hoffstätte <holger.hoffstaette@googlemail.com> Fixes: 3e19ce762b53 "rpc: xdr_truncate_encode" Cc: stable@vger.kernel.org Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2014-10-23rpc: change comments to assertionsJ. Bruce Fields1-2/+3
Reported-by: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2014-10-23RPC: remove unneeded checks from xdr_truncate_encode()J. Bruce Fields1-2/+2
Thanks to Andrea Arcangeli for pointing out these checks are obviously unnecessary given the preceding calculations. Reported-by: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2014-07-18SUNRPC: xdr_get_next_encode_buffer should be declared staticTrond Myklebust1-1/+2
Quell another sparse warning. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2014-06-06nfsd4: simplify server xdr->next_page useJ. Bruce Fields1-4/+5
The rpc code makes available to the NFS server an array of pages to encod into. The server represents its reply as an xdr buf, with the head pointing into the first page in that array, the pages ** array starting just after that, and the tail (if any) sharing any leftover space in the page used by the head. While encoding, we use xdr_stream->page_ptr to keep track of which page we're currently using. Currently we set xdr_stream->page_ptr to buf->pages, which makes the head a weird exception to the rule that page_ptr always points to the page we're currently encoding into. So, instead set it to buf->pages - 1 (the page actually containing the head), and remove the need for a little unintuitive logic in xdr_get_next_encode_buffer() and xdr_truncate_encode. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2014-05-30rpc: define xdr_restrict_buflenJ. Bruce Fields1-0/+29
With this xdr_reserve_space can help us enforce various limits. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2014-05-30nfsd4: allow encoding across page boundariesJ. Bruce Fields1-2/+76
After this we can handle for example getattr of very large ACLs. Read, readdir, readlink are still special cases with their own limits. Also we can't handle a new operation starting close to the end of a page. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2014-05-30rpc: xdr_truncate_encodeJ. Bruce Fields1-0/+66
This will be used in the server side in a few cases: - when certain operations (read, readdir, readlink) fail after encoding a partial response. - when we run out of space after encoding a partial response. - in readlink, where we initially reserve PAGE_SIZE bytes for data, then truncate to the actual size. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2014-03-28rpc: Allow xdr_buf_subsegment to operate in-placeJ. Bruce Fields1-6/+16
Allow xdr_buf_subsegment(&buf, &buf, base, len) to modify an xdr_buf in-place. Also, none of the callers need the iov_base of head or tail to be zeroed out. Also add documentation. (As it turns out, I'm not really using this new guarantee, but it seems a simple way to make this function a bit more robust.) Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2013-08-28SUNRPC: Fix memory corruption issue on 32-bit highmem systemsTrond Myklebust1-3/+6
Some architectures, such as ARM-32 do not return the same base address when you call kmap_atomic() twice on the same page. This causes problems for the memmove() call in the XDR helper routine "_shift_data_right_pages()", since it defeats the detection of overlapping memory ranges, and has been seen to corrupt memory. The fix is to distinguish between the case where we're doing an inter-page copy or not. In the former case of we know that the memory ranges cannot possibly overlap, so we can additionally micro-optimise by replacing memmove() with memcpy(). Reported-by: Mark Young <MYoung@nvidia.com> Reported-by: Matt Craighead <mcraighead@nvidia.com> Cc: Bruce Fields <bfields@fieldses.org> Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Tested-by: Matt Craighead <mcraighead@nvidia.com>
2013-02-08sunrpc: trim off trailing checksum before returning decrypted or integrity ↵Jeff Layton1-0/+41
authenticated buffer When GSSAPI integrity signatures are in use, or when we're using GSSAPI privacy with the v2 token format, there is a trailing checksum on the xdr_buf that is returned. It's checked during the authentication stage, and afterward nothing cares about it. Ordinarily, it's not a problem since the XDR code generally ignores it, but it will be when we try to compute a checksum over the buffer to help prevent XID collisions in the duplicate reply cache. Fix the code to trim off the checksums after verifying them. Note that in unwrap_integ_data, we must avoid trying to reverify the checksum if the request was deferred since it will no longer be present when it's revisited. Signed-off-by: Jeff Layton <jlayton@redhat.com>
2012-11-04SUNRPC: remove BUG_ON in xdr_shrink_bufheadWeston Andros Adamson1-1/+4
Replace bounds checking BUG_ON() with a WARN_ON_ONCE() and resetting the requested len to the max. Signed-off-by: Weston Andros Adamson <dros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-09-28SUNRPC: Optimise away unnecessary data moves in xdr_align_pagesTrond Myklebust1-10/+13
We only have to call xdr_shrink_pagelen() if the remaining RPC message does not fit in the page buffer length that we supplied to xdr_align_pages(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-09-26SUNRPC: Fix the return value of xdr_align_pages()Trond Myklebust1-0/+2
The callers of xdr_align_pages() expect it to return the number of bytes of actual XDR data remaining in the pages. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-07-30Merge tag 'nfs-for-3.6-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds1-58/+69
Pull NFS client updates from Trond Myklebust: "Features include: - More preparatory patches for modularising NFSv2/v3/v4. Split out the various NFSv2/v3/v4-specific code into separate files - More preparation for the NFSv4 migration code - Ensure that OPEN(O_CREATE) observes the pNFS mds threshold parameters - pNFS fast failover when the data servers are down - Various cleanups and debugging patches" * tag 'nfs-for-3.6-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (67 commits) nfs: fix fl_type tests in NFSv4 code NFS: fix pnfs regression with directio writes NFS: fix pnfs regression with directio reads sunrpc: clnt: Add missing braces nfs: fix stub return type warnings NFS: exit_nfs_v4() shouldn't be an __exit function SUNRPC: Add a missing spin_unlock to gss_mech_list_pseudoflavors NFS: Split out NFS v4 client functions NFS: Split out the NFS v4 filesystem types NFS: Create a single nfs_clone_super() function NFS: Split out NFS v4 server creating code NFS: Initialize the NFS v4 client from init_nfs_v4() NFS: Move the v4 getroot code to nfs4getroot.c NFS: Split out NFS v4 file operations NFS: Initialize v4 sysctls from nfs_init_v4() NFS: Create an init_nfs_v4() function NFS: Split out NFS v4 inode operations NFS: Split out NFS v3 inode operations NFS: Split out NFS v2 inode operations NFS: Clean up nfs4_proc_setclientid() and friends ...
2012-07-10net: Fix (nearly-)kernel-doc comments for various functionsBen Hutchings1-5/+7
Fix incorrect start markers, wrapped summary lines, missing section breaks, incorrect separators, and some name mismatches. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-28SUNRPC: Remove unused function xdr_encode_pagesTrond Myklebust1-28/+0
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-06-28SUNRPC: Clean up xdr_enter_pageTrond Myklebust1-3/+3
Use the xdr_align_pages() helper Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-06-28SUNRPC: Clean up xdr_read_pagesTrond Myklebust1-14/+26
Move the page alignment code into a separate helper. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-06-28SUNRPC: Simplify the end-of-buffer calculation in xdr_read_pagesTrond Myklebust1-8/+7
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-06-28SUNRPC: Remove open coded stream position calculation in xdr_read_pagesTrond Myklebust1-3/+3
Use xdr_stream_pos() instead. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-06-28SUNRPC: Add the helper xdr_stream_posTrond Myklebust1-0/+10
Add a helper to report the current offset from the start of the xdr_stream. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-06-28SUNRPC: xdr_read_pages should return the amount of XDR encoded page dataTrond Myklebust1-3/+6
Callers of xdr_read_pages() will want to know exactly how much XDR data is encoded in the pages after the data realignment. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-06-28SUNRPC: Don't decode beyond the end of the RPC reply messageTrond Myklebust1-7/+21
Now that xdr_inline_decode() will automatically cross into the page buffers, we need to ensure that it doesn't exceed the total reply message length. This patch sets up a counter that tracks the number of words remaining in the reply message, and ensures that xdr_inline_decode, xdr_read_pages and xdr_enter_page respect the end of message boundary. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-06-28SUNRPC: Clean up xdr_set_iov()Trond Myklebust1-7/+7
Remove the 'p' argument, since that is only ever set by xdr_init_decode. Add sanity checking of 'p' inside xdr_init_decode itself. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-06-26SUNRPC: xdr_read_pages needs to clear xdr->page_ptr.Trond Myklebust1-0/+1
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-04-15net: cleanup unsigned to unsigned intEric Dumazet1-1/+1
Use of "unsigned int" is preferred to bare "unsigned" in net tree. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-20sunrpc: remove the second argument of k[un]map_atomic()Cong Wang1-10/+10
Signed-off-by: Cong Wang <amwang@redhat.com>
2012-01-05NFSv4: include bitmap in nfsv4 get acl dataAndy Adamson1-1/+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: stable@kernel.org Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-15SUNRPC: Convert the backchannel exports to EXPORT_SYMBOL_GPLTrond Myklebust1-1/+1
Ensure that the backchannel exports conform to the existing sunrpc practice. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-05-29SUNRPC: introduce xdr_init_decode_pagesBenny Halevy1-0/+19
Initialize xdr_stream and xdr_buf using an array of page pointers and length of buffer. Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-01-10NFS: Don't use vm_map_ram() in readdirTrond Myklebust1-31/+124
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]
2010-10-23SUNRPC: Add a helper function xdr_inline_peekTrond Myklebust1-0/+21
We sometimes need to be able to read ahead in an xdr_stream without incrementing the current pointer position. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-09-21SUNRPC: 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>
2010-08-29SUNRPC: 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>
2010-05-14xdr: Add an export for the helper function write_bytes_to_xdr_buf()Kevin Coffman1-0/+1
Signed-off-by: Kevin Coffman <kwc@citi.umich.edu> Signed-off-by: Steve Dickson <steved@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-03-30include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo1-0/+1
implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2009-08-14sunrpc: ntoh -> be*_to_cpuBenny Halevy1-3/+3
ntohl is already defined as be32_to_cpu. be64_to_cpu has architecture specific optimized implementations. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-14sunrpc: hton -> cpu_to_be*Benny Halevy1-3/+3
htonl is already defined as cpu_to_be32. cpu_to_be64 has architecture specific optimized implementations. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-12-23SUNRPC: Convert the xdr helpers and rpc_pipefs to EXPORT_SYMBOL_GPLTrond Myklebust1-25/+25
We've never considered the sunrpc code as part of any ABI to be used by out-of-tree modules. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-04-08SUNRPC: don't call flush_dcache_page() with an invalid pointerTrond Myklebust1-3/+6
Fix a problem in _copy_to_pages(), whereby it may call flush_dcache_page() with an invalid pointer due to the fact that 'pgto' gets incremented beyond the end of the page array. Fix is to exit the loop without this unnecessary increment of pgto. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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