Commit Graph

419 Commits

Author SHA1 Message Date
Martin Brandenburg 1d50361788 orangefs: rename most remaining global variables
Only op_timeout_secs, slot_timeout_secs, and hash_table_size are left
because they are exposed as module parameters. All other global
variables have the orangefs_ prefix.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-16 11:41:24 -04:00
Martin Brandenburg 889d5f1bac orangefs: g_orangefs_stats -> orangefs_stats for consistency
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-15 15:33:42 -04:00
Martin Brandenburg a0fe051592 orangefs: make devreq_mutex static
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-15 15:21:16 -04:00
Martin Brandenburg c27889cdb4 orangefs: describe organization of sysfs
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-15 15:11:32 -04:00
Martin Brandenburg 4a3436647a orangefs: remove duplicated sysfs_ops structures
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-15 15:01:30 -04:00
Martin Brandenburg 7b0cae60ff orangefs: consolidate sysfs show and store functions
Remove a good bit of obfuscated and duplicated code.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-15 14:51:31 -04:00
Martin Brandenburg 2e9f80da07 orangefs: reorganize duplicated sysfs attribute structs
We had a separate struct type for each type of attribute, but they all
did the exact same thing. Consolidate them into one
struct orangefs_attribute type.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-15 14:02:39 -04:00
Martin Brandenburg dc3012a7af orangefs: remove dead code in sysfs
We had a pageful of structures containing kobjects and variables to store
sysfs entries. However only the kobjects were in use. Replace them with
kobjects.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-15 13:28:51 -04:00
Martin Brandenburg 44f4641073 orangefs: clean up debugfs globals
Mostly this is moving code into orangefs-debugfs.c so that globals turn
into static globals.

Then gossip_debug_mask is renamed orangefs_gossip_debug_mask but keeps
global visibility, so it can be used from a macro.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-15 11:38:36 -04:00
Martin Brandenburg c51e012942 orangefs: do not allow client readahead cache without feature bit
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-12 16:12:09 -04:00
Martin Brandenburg 482664ddba orangefs: add features op
This is a new userspace operation, which will be done if the client-core
version is greater than or equal to 2.9.6. This will provide a way to
implement optional features and to determine which features are
supported by the client-core. If the client-core version is older than
2.9.6, no optional features are supported and the op will not be done.

The intent is to allow protocol extensions without relying on the
client-core's current behavior of ignoring what it doesn't understand.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-12 15:12:54 -04:00
Martin Brandenburg f2ee3b7595 orangefs: record userspace version for feature compatbility
The client reports its version to the kernel on startup. We already test
that it is above the minimum version. Now we record it in a global
variable so code elsewhere can consult it before making a request the
client may not understand.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-09 16:25:51 -04:00
Martin Brandenburg 4d20a75677 orangefs: add readahead count and size to sysfs
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-08 15:12:29 -04:00
Martin Brandenburg ed1e158777 orangefs: re-add flush_racache from out-of-tree
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-08 15:12:29 -04:00
Martin Brandenburg 680908e504 orangefs: turn param response value into union
This will support a upcoming request where two related values need to be
updated atomically.

This was done without a union in the OrangeFS server source already. Since
that will break the kernel protocol, it has been fixed there and done here
in a way that does not break the kernel protocol.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-08 15:12:28 -04:00
Martin Brandenburg a6dff80a96 orangefs: add missing param request ops
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-08 15:12:27 -04:00
Martin Brandenburg 6eaff8c777 orangefs: rename remaining bits of mmap readahead cache
This has been dormant code for many years. Parts of it were removed from
the OrangeFS kernel code when it went into mainline. These bits were missed.
Now the readahead cache has been resurrected in the OrangeFS userspace
portions. It was renamed there, since it doesn't really have anything to do
with mmap specifically, so it will be renamed here.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-08 15:12:27 -04:00
Al Viro f66debf1b3 orangefs: use %pd/%pD
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-08-07 23:38:47 -04:00
Martin Brandenburg 8bbb20a863 orangefs: Account for jiffies wraparound.
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-02 15:39:13 -04:00
Martin Brandenburg 957ee43718 orangefs: Change default dcache and getattr timeout to 50 msec.
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-02 15:38:47 -04:00
Martin Brandenburg 4cd8f31944 orangefs: Allow dcache and getattr cache time to be configured.
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-02 15:38:46 -04:00
Martin Brandenburg 71680c18c8 orangefs: Cache getattr results.
The userspace component attempts to do this, but this will prevent
us from even needing to go into userspace to satisfy certain getattr
requests.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-02 15:38:45 -04:00
Martin Brandenburg 31b7c1ab4e orangefs: Use d_time to avoid excessive lookups
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-02 15:38:21 -04:00
Linus Torvalds 6784725ab0 Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs updates from Al Viro:
 "Assorted cleanups and fixes.

  Probably the most interesting part long-term is ->d_init() - that will
  have a bunch of followups in (at least) ceph and lustre, but we'll
  need to sort the barrier-related rules before it can get used for
  really non-trivial stuff.

  Another fun thing is the merge of ->d_iput() callers (dentry_iput()
  and dentry_unlink_inode()) and a bunch of ->d_compare() ones (all
  except the one in __d_lookup_lru())"

* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (26 commits)
  fs/dcache.c: avoid soft-lockup in dput()
  vfs: new d_init method
  vfs: Update lookup_dcache() comment
  bdev: get rid of ->bd_inodes
  Remove last traces of ->sync_page
  new helper: d_same_name()
  dentry_cmp(): use lockless_dereference() instead of smp_read_barrier_depends()
  vfs: clean up documentation
  vfs: document ->d_real()
  vfs: merge .d_select_inode() into .d_real()
  unify dentry_iput() and dentry_unlink_inode()
  binfmt_misc: ->s_root is not going anywhere
  drop redundant ->owner initializations
  ufs: get rid of redundant checks
  orangefs: constify inode_operations
  missed comment updates from ->direct_IO() prototype change
  file_inode(f)->i_mapping is f->f_mapping
  trim fsnotify hooks a bit
  9p: new helper - v9fs_parent_fid()
  debugfs: ->d_parent is never NULL or negative
  ...
2016-07-28 12:59:05 -07:00
Linus Torvalds 0e06f5c0de Merge branch 'akpm' (patches from Andrew)
Merge updates from Andrew Morton:

 - a few misc bits

 - ocfs2

 - most(?) of MM

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (125 commits)
  thp: fix comments of __pmd_trans_huge_lock()
  cgroup: remove unnecessary 0 check from css_from_id()
  cgroup: fix idr leak for the first cgroup root
  mm: memcontrol: fix documentation for compound parameter
  mm: memcontrol: remove BUG_ON in uncharge_list
  mm: fix build warnings in <linux/compaction.h>
  mm, thp: convert from optimistic swapin collapsing to conservative
  mm, thp: fix comment inconsistency for swapin readahead functions
  thp: update Documentation/{vm/transhuge,filesystems/proc}.txt
  shmem: split huge pages beyond i_size under memory pressure
  thp: introduce CONFIG_TRANSPARENT_HUGE_PAGECACHE
  khugepaged: add support of collapse for tmpfs/shmem pages
  shmem: make shmem_inode_info::lock irq-safe
  khugepaged: move up_read(mmap_sem) out of khugepaged_alloc_page()
  thp: extract khugepaged from mm/huge_memory.c
  shmem, thp: respect MADV_{NO,}HUGEPAGE for file mappings
  shmem: add huge pages support
  shmem: get_unmapped_area align huge page
  shmem: prepare huge= mount option and sysfs knob
  mm, rmap: account shmem thp pages
  ...
2016-07-26 19:55:54 -07:00
Michal Hocko 8a5c743e30 mm, memcg: use consistent gfp flags during readahead
Vladimir has noticed that we might declare memcg oom even during
readahead because read_pages only uses GFP_KERNEL (with mapping_gfp
restriction) while __do_page_cache_readahead uses
page_cache_alloc_readahead which adds __GFP_NORETRY to prevent from
OOMs.  This gfp mask discrepancy is really unfortunate and easily
fixable.  Drop page_cache_alloc_readahead() which only has one user and
outsource the gfp_mask logic into readahead_gfp_mask and propagate this
mask from __do_page_cache_readahead down to read_pages.

This alone would have only very limited impact as most filesystems are
implementing ->readpages and the common implementation mpage_readpages
does GFP_KERNEL (with mapping_gfp restriction) again.  We can tell it to
use readahead_gfp_mask instead as this function is called only during
readahead as well.  The same applies to read_cache_pages.

ext4 has its own ext4_mpage_readpages but the path which has pages !=
NULL can use the same gfp mask.  Btrfs, cifs, f2fs and orangefs are
doing a very similar pattern to mpage_readpages so the same can be
applied to them as well.

[akpm@linux-foundation.org: coding-style fixes]
[mhocko@suse.com: restrict gfp mask in mpage_alloc]
  Link: http://lkml.kernel.org/r/20160610074223.GC32285@dhcp22.suse.cz
Link: http://lkml.kernel.org/r/1465301556-26431-1-git-send-email-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Cc: Vladimir Davydov <vdavydov@parallels.com>
Cc: Chris Mason <clm@fb.com>
Cc: Steve French <sfrench@samba.org>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Jan Kara <jack@suse.cz>
Cc: Mike Marshall <hubcap@omnibond.com>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Changman Lee <cm224.lee@samsung.com>
Cc: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-07-26 16:19:19 -07:00
Jann Horn 78fee0b684 orangefs: fix namespace handling
In orangefs_inode_getxattr(), an fsuid is written to dmesg. The kuid is
converted to a userspace uid via from_kuid(current_user_ns(), [...]), but
since dmesg is global, init_user_ns should be used here instead.

In copy_attributes_from_inode(), op_alloc() and fill_default_sys_attrs(),
upcall structures are populated with uids/gids that have been mapped into
the caller's namespace. However, those upcall structures are read by
another process (the userspace filesystem driver), and that process might
be running in another namespace. This effectively lets any user spoof its
uid and gid as seen by the userspace filesystem driver.

To fix the second issue, I just construct the opcall structures with
init_user_ns uids/gids and require the filesystem server to run in the
init namespace. Since orangefs is full of global state anyway (as the error
message in DUMP_DEVICE_ERROR explains, there can only be one userspace
orangefs filesystem driver at once), that shouldn't be a problem.

[
Why does orangefs even exist in the kernel if everything does upcalls into
userspace? What does orangefs do that couldn't be done with the FUSE
interface? If there is no good answer to those questions, I'd prefer to see
orangefs kicked out of the kernel. Can that be done for something that
shipped in a release?

According to commit f7ab093f74 ("Orangefs: kernel client part 1"), they
even already have a FUSE daemon, and the only rational reason (apart from
"but most of our users report preferring to use our kernel module instead")
given for not wanting to use FUSE is one "in-the-works" feature that could
probably be integated into FUSE instead.
]

This patch has been compile-tested.

Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-07-05 15:47:43 -04:00
Mike Marshall 3903f15008 Orangefs: allow O_DIRECT in open
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-07-05 15:47:35 -04:00
Andreas Gruenbacher d373a712c1 orangefs: Remove useless xattr prefix arguments
Mike,

On Fri, Jun 3, 2016 at 9:44 PM, Mike Marshall <hubcap@omnibond.com> wrote:
> We use the return value in this one line you changed, our userspace code gets
> ill when we send it (-ENOMEM +1) as a key length...

ah, my mistake.  Here's a fixed version.

Thanks,
Andreas

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-07-05 15:47:27 -04:00
Andreas Gruenbacher 2ce8272a10 orangefs: Remove redundant "trusted." xattr handler
Orangefs has a catch-all xattr handler that effectively does what the
trusted handler does already.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-07-05 15:47:22 -04:00
Andreas Gruenbacher 972a7344fc orangefs: Remove useless defines
The ORANGEFS_XATTR_INDEX_ defines are unused; the ORANGEFS_XATTR_NAME_
defines only obfuscate the code.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-07-05 15:47:16 -04:00
Al Viro 6f3fc1070b orangefs: constify inode_operations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-05-29 19:07:00 -04:00
Al Viro 96b0cffbaf orangefs: don't open-code %pd2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-05-29 16:22:07 -04:00
Al Viro 5930122683 switch xattr_handler->set() to passing dentry and inode separately
preparation for similar switch in ->setxattr() (see the next commit for
rationale).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-05-27 15:39:43 -04:00
Al Viro 5ecfcb265f orangefs: don't open-code inode_lock/inode_unlock
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-05-02 19:47:23 -04:00
Al Viro 84695ffee7 Merge getxattr prototype change into work.lookups
The rest of work.xattr stuff isn't needed for this branch
2016-05-02 19:45:47 -04:00
Al Viro b296821a7c xattr_handler: pass dentry and inode as separate arguments of ->get()
... and do not assume they are already attached to each other

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-04-10 20:48:24 -04:00
Linus Torvalds 6759212640 Orangefs: cleanups and a strncpy vulnerability fix.
Cleanups:
 
   - remove an unused variable from orangefs_readdir.
   - clean up printk wrapper used for ofs "gossip" debugging.
   - clean up truncate ctime and mtime setting in inode.c
   - remove a useless null check found by coccinelle.
   - optimize some memcpy/memset boilerplate code.
   - remove some useless sanity checks from xattr.c
 
 Fix:
 
   - fix a potential strncpy vulnerability.
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Merge tag 'for-linus-4.6-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux

Pull orangefs fixes from Mike Marshall:
 "Orangefs cleanups and a strncpy vulnerability fix.

  Cleanups:
   - remove an unused variable from orangefs_readdir.
   - clean up printk wrapper used for ofs "gossip" debugging.
   - clean up truncate ctime and mtime setting in inode.c
   - remove a useless null check found by coccinelle.
   - optimize some memcpy/memset boilerplate code.
   - remove some useless sanity checks from xattr.c

  Fix:
   - fix a potential strncpy vulnerability"

* tag 'for-linus-4.6-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux:
  orangefs: remove unused variable
  orangefs: Add KERN_<LEVEL> to gossip_<level> macros
  orangefs: strncpy -> strscpy
  orangefs: clean up truncate ctime and mtime setting
  Orangefs: fix ifnullfree.cocci warnings
  Orangefs: optimize boilerplate code.
  Orangefs: xattr.c cleanup
2016-04-09 10:33:58 -07:00
Martin Brandenburg e56f498142 orangefs: remove unused variable
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-04-08 15:50:44 -04:00
Joe Perches 1917a69328 orangefs: Add KERN_<LEVEL> to gossip_<level> macros
Emit the logging messages at the appropriate levels.

Miscellanea:

o Change format to fmt
o Use the more common ##__VA_ARGS__

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-04-08 14:10:45 -04:00
Martin Brandenburg 2eacea74cc orangefs: strncpy -> strscpy
It would have been possible for a rogue client-core to send in a symlink
target which is not NUL terminated. This returns EIO if the client-core
gives us corrupt data.

Leave debugfs and superblock code as is for now.

Other dcache.c and namei.c strncpy instances are safe because
ORANGEFS_NAME_MAX = NAME_MAX + 1; there is always enough space for a
name plus a NUL byte.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-04-08 14:10:34 -04:00
Martin Brandenburg f83140c146 orangefs: clean up truncate ctime and mtime setting
The ctime and mtime are always updated on a successful ftruncate and
only updated on a successful truncate where the size changed.

We handle the ``if the size changed'' bit.

This matches FUSE's behavior.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-04-08 14:10:31 -04:00
kbuild test robot 2fa37fd713 Orangefs: fix ifnullfree.cocci warnings
fs/orangefs/orangefs-debugfs.c:130:2-26: WARNING: NULL check before freeing functions like kfree, debugfs_remove, debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider reorganizing relevant code to avoid passing NULL values.

 NULL check before some freeing functions is not needed.

 Based on checkpatch warning
 "kfree(NULL) is safe this check is probably not required"
 and kfreeaddr.cocci by Julia Lawall.

Generated by: scripts/coccinelle/free/ifnullfree.cocci

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-04-08 14:08:38 -04:00
Mike Marshall a9bb3ba81f Orangefs: optimize boilerplate code.
Suggested by David Binderman <dcb314@hotmail.com>
The former can potentially be a performance win over the latter.

memcpy(d, s, len);
memset(d+len, c, size-len);

memset(d, c, size);
memcpy(d, s, len);

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-04-08 14:08:27 -04:00
Mike Marshall 2d09a2ca6a Orangefs: xattr.c cleanup
1. It is nonsense to test for negative size_t, suggested by
   David Binderman <dcb314@hotmail.com>

2. By the time Orangefs gets called, the vfs has ensured that
   name != NULL, and that buffer and size are sane.

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-04-08 14:08:27 -04:00
Linus Torvalds 4a2d057e4f Merge branch 'PAGE_CACHE_SIZE-removal'
Merge PAGE_CACHE_SIZE removal patches from Kirill Shutemov:
 "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.

  Let's stop pretending that pages in page cache are special.  They are
  not.

  The first patch with most changes has been done with coccinelle.  The
  second is manual fixups on top.

  The third patch removes macros definition"

[ I was planning to apply this just before rc2, but then I spaced out,
  so here it is right _after_ rc2 instead.

  As Kirill suggested as a possibility, I could have decided to only
  merge the first two patches, and leave the old interfaces for
  compatibility, but I'd rather get it all done and any out-of-tree
  modules and patches can trivially do the converstion while still also
  working with older kernels, so there is little reason to try to
  maintain the redundant legacy model.    - Linus ]

* PAGE_CACHE_SIZE-removal:
  mm: drop PAGE_CACHE_* and page_cache_{get,release} definition
  mm, fs: remove remaining PAGE_CACHE_* and page_cache_{get,release} usage
  mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros
2016-04-04 10:50:24 -07:00
Kirill A. Shutemov 09cbfeaf1a mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros
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>
2016-04-04 10:41:08 -07:00
Martin Brandenburg 878dfd3210 orangefs: minimum userspace version is 2.9.3
Version 2.9.4 isn't even released yet.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-03-31 12:06:00 -04:00
Martin Brandenburg 641bb3246d orangefs: don't put readdir slot twice
This was quite an oversight. After a readdir, the module could not be
unloaded, the number of slots is wrong, and memory near the slot bitmap
is possibly corrupt. Oops.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-03-31 12:06:00 -04:00
Al Viro 45996492e5 orangefs: fix orangefs_superblock locking
* switch orangefs_remount() to taking ORANGEFS_SB(sb) instead of sb
* remove from the list _before_ orangefs_unmount() - request_mutex
in the latter will make sure that nothing observed in the loop in
ORANGEFS_DEV_REMOUNT_ALL handling will get freed until the end
of loop
* on removal, keep the forward pointer and zero the back one.  That
way we can drop and regain the spinlock in the loop body (again,
ORANGEFS_DEV_REMOUNT_ALL one) and still be able to get to the
rest of the list.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-26 07:22:00 -04:00
Al Viro 6d4c1a30b3 orangefs: fix do_readv_writev() handling of error halfway through
Error should only be returned if nothing had been read/written.
Otherwise we need to report a short read/write instead.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-25 22:30:54 -04:00
Al Viro 524b1d3095 orangefs: have ->kill_sb() evict the VFS side of things first
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-25 22:30:54 -04:00
Al Viro 177f8fc491 orangefs: sanitize ->llseek()
a) open files can't have NULL inodes
b) it's SEEK_END, not ORANGEFS_SEEK_END; no need to get cute.
c) make_bad_inode() on lseek()?

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-25 22:30:54 -04:00
Al Viro 7df240d771 orangefs-bufmap.h: trim unused junk
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-25 22:30:54 -04:00
Al Viro b8a99a8f9f orangefs: saner calling conventions for getting a slot
just have it return the slot number or -E... - the caller checks
the sign anyway

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-25 22:30:54 -04:00
Al Viro bf6bf606e5 orangefs_copy_{to,from}_bufmap(): don't pass bufmap pointer
it's always __orangefs_bufmap

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-25 22:30:54 -04:00
Al Viro 9f5e2f7f1b orangefs: get rid of readdir_handle_s
no point, really - we couldn't keep those across the calls of
getdents(); it would be too easy to DoS, having all slots exhausted.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-25 22:30:54 -04:00
Martin Brandenburg fecd86aac5 ornagefs: ensure that truncate has an up to date inode size
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-23 17:36:16 -04:00
Martin Brandenburg e8da254c41 orangefs: move code which sets i_link to orangefs_inode_getattr
Everything else setting inode->i_ values is in there.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-23 17:36:16 -04:00
Martin Brandenburg 05d31c5cb3 orangefs: remove needless wrapper around GFP_KERNEL
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-23 17:36:15 -04:00
Martin Brandenburg 93d53a4885 orangefs: remove wrapper around mutex_lock(&inode->i_mutex)
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-23 17:36:15 -04:00
Martin Brandenburg 266626339b orangefs: refactor inode type or link_target change detection
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-23 17:36:15 -04:00
Martin Brandenburg 5859d77e56 orangefs: use new getattr for revalidate and remove old getattr
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-23 17:36:15 -04:00
Martin Brandenburg 8f24928d19 orangefs: use new getattr in inode getattr and permission
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-23 17:36:15 -04:00
Martin Brandenburg e2f7f0d798 orangefs: use new orangefs_inode_getattr to get size in write and llseek
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-23 17:36:14 -04:00
Martin Brandenburg 075cca50b6 orangefs: use new orangefs_inode_getattr to create new inodes
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-23 17:36:14 -04:00
Martin Brandenburg 3c9cf98d7b orangefs: rename orangefs_inode_getattr to orangefs_inode_old_getattr
This is motivated by orangefs_inode_old_getattr's habit of writing over
live inodes.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-23 17:36:14 -04:00
Martin Brandenburg d57521a653 orangefs: remove inode->i_lock wrapper
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-23 17:36:13 -04:00
Martin Brandenburg 2f83ace371 orangefs: put register_chrdev immediately before register_filesystem
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-17 14:34:10 -04:00
Martin Brandenburg a4c680a027 orangefs: remove paranoia in orangefs_set_inode
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-17 14:33:56 -04:00
Martin Brandenburg 02a5cc537d orangefs: sanitize listxattr and return EIO on impossible values
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-17 14:33:47 -04:00
Martin Brandenburg 5e06664f29 orangefs: remove unused reference to xattr key length
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-17 14:33:47 -04:00
Mike Marshall 1a0ce16d71 Orangefs: adjust unwind on module init failure.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-17 13:24:34 -04:00
Mike Marshall 2180c52cc7 Orangefs: fix sloppy cleanups of debugfs and sysfs init failures.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-14 15:48:28 -04:00
Mike Marshall a7d3e78ab5 Orangefs: follow_link -> get_link change
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-14 15:48:28 -04:00
Mike Marshall 53f57fef43 Orangefs: Extra sanity insurance on buffer before using string functions on it.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-14 15:48:28 -04:00
Martin Brandenburg acfcbaf192 orangefs: make fs_mount_pending static
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-09 13:26:39 -05:00
Martin Brandenburg c62da5853d orangefs: Avoid symlink upcall if target is too long.
Previously the client-core detected this condition by sheer luck!

Since we used strncpy, no NUL byte would be included on the name. The
client-core would call strlen, which would read past the end of its
buffer, but return a number large enough that the client-core would
return ENAMETOOLONG.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-09 13:26:39 -05:00
Mike Marshall 162ada7764 Orangefs: improve the POSIXness of interrupted writes...
Don't return EINTR on interrupted writes if some data has already
been written.

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-09 13:12:37 -05:00
Mike Marshall cf07c0bf88 Orangefs: add a new gossip statement
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-09 13:11:45 -05:00
Mike Marshall 9d9e7ba9ee Orangefs: improve gossip statements
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-03 13:46:48 -05:00
Mike Marshall 9f08cfe944 Orangefs: update orangefs.txt
Al Viro has cleaned up the way ops are processed and waited for,
now orangefs.txt has an overview of how it works. Several recent
related commits have added to the comments in the code as well.

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-26 14:39:08 -05:00
Mike Marshall ca9f518ead Orangefs: code sanitation.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-26 10:21:12 -05:00
Arnd Bergmann 401898eed7 orangefs: remove unused 'diff' function
orangefs contains a helper function to calculate the difference
between two timeval structures. We are trying to remove all
instances of timespec from the kernel, and this one is not
used at all, so let's remove it now.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-26 10:18:43 -05:00
Arnd Bergmann be81ce48b2 orangefs: avoid time conversion function
The new orangefs code uses a helper function to read a time field to
its private structures from struct iattr. This will conflict with the
move to 64-bit timestamps in the kernel and is generally not necessary.

This replaces the conversion with a simple cast to time64_t that shows
what is going on. As the orangefs-internal representation already uses
64-bit timestamps, there should be no ambiguity to negative values,
and the cast ensures that we treat them as times before 1970 on both
32-bit and 64-bit architectures, rather than times after 2038. This
patch keeps that behavior.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-26 10:18:39 -05:00
Martin Brandenburg 69a23de2f3 orangefs: clean up fill_default_sys_attrs
Size and type are read-only and not in the mask. The times were left
unset despite being in the mask.

We zero-fill the times since the server will fill them in and we will
get the correct time when we fill the inode with getattr.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-24 17:07:51 -05:00
Martin Brandenburg 6ceaf7818f orangefs: we never lookup with sym_follow set
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-24 17:07:51 -05:00
Martin Brandenburg 9c2bcf288e orangefs: remove vestigial async io code
I have verified that there is nothing in the userspace daemon version we
are implementing this protocol against that ever looks at this field.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-24 17:07:50 -05:00
Martin Brandenburg 47b4948fdb orangefs: use ORANGEFS_NAME_LEN everywhere; remove ORANGEFS_NAME_MAX
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-24 17:07:50 -05:00
Martin Brandenburg ee70fca0bc orangefs: don't d_drop in d_revalidate since the caller will
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-24 17:07:50 -05:00
Martin Brandenburg ee3b8d377c orangefs: free readdir buffer index before the dir_emit loop
We only need it while the service operation is actually in progress
since it is only used to co-ordinate the client-core's memory use. The
kernel allocates its own space.

Also clean up some comments which mislead the reader into thinking
the readdir buffers are shared memory.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-24 17:07:50 -05:00
Mike Marshall adcf34a289 Orangefs: code sanitation
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-24 16:54:27 -05:00
Mike Marshall d37c0f307a Orangefs: clean up orangefs_kernel_op_s comments.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-24 13:24:14 -05:00
Al Viro c1223ca48b orangefs: get rid of op refcounts
not needed anymore

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19 13:45:56 -05:00
Al Viro 05a50a5be8 orangefs: have ..._clean_interrupted_...() wait for copy to/from daemon
* turn all those list_del(&op->list) into list_del_init()
* don't pick ops that are already given up in control device
  ->read()/->write_iter().
* have orangefs_clean_interrupted_operation() notice if op is currently
  being copied to/from daemon (by said ->read()/->write_iter()) and
  wait for that to finish.
* when we are done copying to/from daemon and find that it had been
  given up while we were doing that, wake the waiting ..._clean_interrupted_...

As the result, we are guaranteed that orangefs_clean_interrupted_operation(op)
doesn't return until nobody else can see op.  Moreover, we don't need to play
with op refcounts anymore.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19 13:45:56 -05:00
Al Viro 5964c1b839 orangefs: set correct ->downcall.status on failing to copy reply from daemon
... and clean the end of control device ->write_iter() while we are at it

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19 13:45:55 -05:00
Mike Marshall ddb84da38d Orangefs: remove vestigial ASYNC code
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19 13:45:55 -05:00
Mike Marshall 5253487e04 Orangefs: make some gossip statements more helpful.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19 13:45:55 -05:00
Al Viro 897c5df6cf orangefs: get rid of op->done
shouldn't be needed now

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19 13:45:55 -05:00
Al Viro 82d37f19ff orangefs_readdir_index_put(): get rid of bufmap argument
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19 13:45:54 -05:00
Al Viro ea2c9c9f65 orangefs: bufmap rewrite
new waiting-for-slot logics:
	* make request for slot wait for bufmap to be set up if it
comes before it's installed *OR* while it's running down
	* make closing control device wait for all slots to be freed
	* waiting itself rewritten to (open-coded) analogues of wait_event_...
primitives - we would need wait_event_locked() and, pardon an obscenely
long name, wait_event_interruptible_exclusive_timeout_locked().
	* we never wait for more than slot_timeout_secs in total and,
if during the wait the daemon goes away, we only allow
ORANGEFS_BUFMAP_WAIT_TIMEOUT_SECS for it to come back.
	* (cosmetical) bitmap is used instead of an array of zeroes and ones
	* old (and only reached if we are about to corrupt memory) waiting
for daemon restart in service_operation() removed.

[Martin's fixes folded]

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19 13:45:54 -05:00
Al Viro 178041848a orangefs_bufmap_..._query(): don't bother with refcounts
... just hold the spinlock while fetching the field in question.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19 13:45:54 -05:00
Al Viro 05b39a8b5c orangefs: lift handling of timeouts and attempts count to service_operation()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19 13:45:54 -05:00
Al Viro c72f15b7d9 service_operation(): don't block signals, just use ..._killable
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19 13:45:53 -05:00
Al Viro 98815ade9e orangefs: sanitize handling of request list
* checking that daemon is running (to decide whether we want to limit
the timeout) should be done *after* the damn thing is included into
the list; doing that before means that if the daemon gets shut down
in between, we'll end up waiting indefinitely (== up to kill -9).

* cancels should go into the head of the queue - the sooner they
are picked, the less work daemon has to do and the sooner we get to
free the slot held by aborted operation.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19 13:45:53 -05:00
Al Viro d2d87a3b6d orangefs: get rid of loop in wait_for_matching_downcall()
turn op->waitq into struct completion...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19 13:45:53 -05:00
Martin Brandenburg cf22644a0e orangefs: use S_ISREG(mode) and friends instead of mode & S_IFREG.
Suggestion from Dan Carpenter.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19 13:45:53 -05:00
Al Viro 78699e29fd orangefs: delay freeing slot until cancel completes
Make cancels reuse the aborted read/write op, to make sure they do not
fail on lack of memory.

Don't issue a cancel unless the daemon has seen our read/write, has not
replied and isn't being shut down.

If cancel *is* issued, don't wait for it to complete; stash the slot
in there and just have it freed when cancel is finally replied to or
purged (and delay dropping the reference until then, obviously).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-19 13:45:53 -05:00
Al Viro 1357d06d49 get rid of bufmap argument of orangefs_bufmap_put()
it's always equal to __orangefs_bufmap and the latter can't change
until we are done

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-12 15:05:33 -05:00
Al Viro c0eae8cd77 orangefs: get rid of handle_io_error()
the second caller never needs to cancel, actually

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-12 15:05:32 -05:00
Al Viro 7b9761af86 orangefs: wait_for_direct_io(): restore the position in iter when restarting
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-12 15:05:32 -05:00
Al Viro e17be9fd4d orangefs: avoid freeing a slot twice in wait_for_direct_io()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-12 15:05:32 -05:00
Mike Marshall 6ebcc3fcda Orangefs: added a couple of WARN_ONs, perhaps just temporarily.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-04 16:28:31 -05:00
Martin Brandenburg 237f8282c0 orangefs: Do not retrieve size from servers unless it it necessary.
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-04 14:12:43 -05:00
Martin Brandenburg 933287da75 orangefs: Implement inode_operations->permission().
Thus d_revalidate is not obliged to check on as much, which will
eventually lead the way to hammering the filesystem servers much less.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-04 14:12:37 -05:00
Martin Brandenburg fe88adc366 orangefs: Only compare attributes specified in orangefs_inode_getattr.
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-04 14:12:17 -05:00
Mike Marshall 2d4cae0d17 Orangefs: clean up slab allocation.
A couple of caches were no longer needed:

 - iov_iter improvements to orangefs_devreq_write_iter eliminated
   the need for the dev_req_cache.

 - removal (months ago) of the old AIO code eliminated the need
   for the kiocb_cache.

Also, deobfuscation of use of GFP_KERNEL when calling kmem_cache_(z)alloc
for remaining caches.

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-04 13:48:16 -05:00
Mike Marshall 5090c9670d Orangefs: improve gossip statement
There were two just alike, making it hard maybe to tell which one
you were looking at in syslog... so I changed it a little by adding
some extra interesting tidbits to it...

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-02-04 13:29:27 -05:00
Martin Brandenburg 99109822f5 orangefs: Fix revalidate.
Previously, it would update a live inode. This was fixed, but it did not
ever check that the inode attributes in the dcache are correct. This
checks all inode attributes and rejects any that are not correct, which
causes a lookup and thus a new getattr.

Perhaps inode_operations->permission should replace or augment some of
this.

There is no actual caching, and this does a rather excessive amount of
network operations back to the filesystem server.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-28 15:08:40 -05:00
Martin Brandenburg 394f647e3a orangefs: Util functions shouldn't operate on inode where it can be avoided.
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-28 15:08:39 -05:00
Al Viro 115b93a859 orangefs: clean up op_alloc()
fold orangefs_op_initialize() in there, don't bother locking something
nobody else could've seen yet, use kmem_cache_zalloc() instead of
explicit memset()...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 15:20:11 -05:00
Al Viro b0bc3a7b62 orangefs: move handle_io_error() to file.c
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 15:20:11 -05:00
Al Viro 2a9e5c2260 orangefs: don't reinvent completion.h...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 15:20:11 -05:00
Al Viro 4f55e39732 if ORANGEFS_VFS_OP_FILE_IO request had been given up, don't bother waiting
... we are not going to get woken up anyway, so it's just going to time out
and whine.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 15:20:11 -05:00
Al Viro 727cbfea62 orangefs: get rid of MSECS_TO_JIFFIES
All timeouts are in _seconds_, so all calls are of form
MSECS_TO_JIFFIES(n * 1000), which is a convoluted way to
spell n * HZ.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 15:20:11 -05:00
Al Viro eab9b38939 orangefs_clean_up_interrupted_operation: call with op->lock held
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 15:15:09 -05:00
Al Viro 70c6ea26ff orangefs: reduce nesting in wait_for_matching_downcall()
reorder if branches...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 15:15:09 -05:00
Al Viro e1056a9cc3 orangefs: remove cargo-culting spin_lock_irqsave() in service_operation()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 15:15:09 -05:00
Al Viro ed42fe0593 orangefs: hopefully saner op refcounting and locking
* create with refcount 1
* make op_release() decrement and free if zero (i.e. old put_op()
  has become that).
* mark when submitter has given up waiting; from that point nobody
  else can move between the lists, change state, etc.
* have daemon read/write_iter grab a reference when picking op
  and *always* give it up in the end
* don't put into hash until we know it's been successfully passed to
  daemon

* move op->lock _lower_ than htab_in_progress_lock (and make sure
  to take it in purge_inprogress_ops())

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 13:03:12 -05:00
Al Viro fee25ce125 orangefs: make sure that reopening pvfs2-req won't overlap with the end of close
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 12:55:24 -05:00
Al Viro 96acf9d65e orangefs: nothing should remain in request list and in hash
... otherwise some thread is running in .text that is about to
be freed.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 12:55:24 -05:00
Al Viro 60831949cc orangefs: move wakeups into set_op_state_{serviced,purged}()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 12:55:24 -05:00
Al Viro ade3d78104 orangefs: make wait_for_...downcall() static
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 12:48:02 -05:00
Al Viro 831d094979 orangefs: move wakeups into set_op_state_{serviced,purged}()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 12:42:43 -05:00
Al Viro b7ae37b09e orangefs: make wait_for_...downcall() static
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 12:42:43 -05:00
Al Viro e07db0a2c2 make orangefs_clean_up_interrupted_operation() static
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 12:42:43 -05:00
Al Viro 1264ddfdb7 orangefs: kill orangefs_inode_s ->list
no users...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 12:42:43 -05:00
Al Viro fc916da52d orangefs: get rid of <censored> macros
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 12:42:43 -05:00
Al Viro 90e54e36c9 orangefs: ->poll() doesn't need spinlock
not just for list_empty()...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 12:42:43 -05:00
Al Viro 8016387ce7 orangefs: kill ioctl32 rudiments
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 12:42:43 -05:00
Al Viro 83595db052 orangefs: ->poll() is only called between successful ->open() and ->release()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 12:42:43 -05:00
Al Viro fb6d2526e9 orangefs: generic_file_open() is pointless for character devices
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 12:42:43 -05:00
Al Viro 3e1dd9aa82 orangefs: use DEFINE_MUTEX (and mutex_init() had been too late)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-23 12:42:43 -05:00
Mike Marshall cf0c27715b Orangefs: make gossip statement more palatable to xtensa
Thanks to Intel's kbuild test robot

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-19 12:04:40 -05:00
Mike Marshall 1808f8cc6c Orangefs: add verification to decode_dirents
Also add comments to decode_dirents and make it more readable.

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-15 13:10:52 -05:00
Mike Marshall be57366e14 Orangefs: make .statfs gossip_debug more complete.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-13 11:38:14 -05:00
Mike Marshall 569dbfc6b3 Orangefs: define a minimum compatible userspace version.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-13 11:36:25 -05:00
Mike Marshall 4c27b327b8 Orangefs: change ORANGEFS_VERSION from "Unknown" to "upstream"
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-13 11:34:59 -05:00
Mike Marshall c817e266e4 Orangefs: rename orangefs_kernel_op_s.aio_ref_count to just ref_count.
The op structure's ref_count member hasn't got anything to do with
asynchronous I/O.

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-13 11:29:05 -05:00
Mike Marshall b3ae4755f5 Orangefs: implement .write_iter
Until now, orangefs_devreq_write_iter has just been a wrapper for
the old-fashioned orangefs_devreq_writev... linux would call
.write_iter with "struct kiocb *iocb" and "struct iov_iter *iter"
and .write_iter would just:

        return pvfs2_devreq_writev(iocb->ki_filp,
                                   iter->iov,
                                   iter->nr_segs,
                                   &iocb->ki_pos);

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-13 11:18:12 -05:00
Martin Brandenburg 7d2214858f orangefs: Fix some more global namespace pollution.
This only changes the names of things, so there is no functional change.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-04 16:21:46 -05:00
Richard Weinberger c146c0b87f orangefs: Don't pollute global namespace
Prefix public functions with "orangefs_" do don't
pollute the global namespace.

This fixes a build issue on UML which also has block_signals().

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-04 16:21:37 -05:00
Julia Lawall acaca36dd9 OrangeFS: constify export_operations structures
This export_operations structure is never modified, so declare it as const.
Most other structures of this type are already const.

Done with the help of Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-01-04 11:06:12 -05:00
Mike Marshall f987f4c28a Orangefs: don't trigger copy_attributes_to_inode from d_revalidate.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-12-30 13:04:28 -05:00
Arnd Bergmann eb57bcc271 orangefs: fix typo in ornagefs_inode_lock
Orangefs fails to build on 32-bit SMP configurations due to a simple
misspelling, this does the obvious fix.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 575e946125 ("Orangefs: change pvfs2 filenames to orangefs")
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-12-28 10:31:21 -05:00
Nicholas Mc Guire dde58ca436 Orangefs: use kzalloc for kmalloc + memset 0
This is an API consolidation only. The use of kmalloc + memset to 0
should be equivalent to kzalloc in this case.

Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-12-28 10:30:51 -05:00
Mike Marshall 62441fa53b Orangefs: validate resp.listxattr.returned_count
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-12-17 16:11:40 -05:00
Mike Marshall fef8b67ce6 Orangefs: don't use deprecated xattr defines.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-12-17 14:36:34 -05:00
Martin Brandenburg b09d10df5a orangefs: Do not unref if there is no bufmap.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2015-12-17 14:35:45 -05:00
Martin Brandenburg 765a75b34a orangefs: Remove useless inline qualifier from bufmap functions.
All callers were outside of the file these functions were declared in,
so nothing was ever inlined anyway.

Further this happens before I/O and any speedup by not having to do a
call will be dwarfed by the time it takes to talk to the server.

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2015-12-17 14:34:53 -05:00
Martin Brandenburg bf89f58432 orangefs: Change visibility of several bufmap helpers to static.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2015-12-17 14:34:17 -05:00
Martin Brandenburg a762ae6dc5 orangefs: Remove ``aligned'' upcall and downcall length macros.
There was previously MAX_ALIGNED_DEV_REQ_(UP|DOWN)SIZE macros which
evaluated to MAX_DEV_REQ_(UP|DOWN)SIZE+8. As it is unclear what this is
for, other than creating a situation where we accept more data than we
can parse, it is removed.

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2015-12-17 14:33:38 -05:00
Martin Brandenburg 90d26aa808 Orangefs: do not finalize bufmap if it was never initialized.
Found by the infant Orangefs fuzzer...

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-12-15 15:37:53 -05:00
Mike Marshall ce6c414e17 Orangefs: Don't wait the old-fashioned way.
Get rid of add_wait_queue, set_current_state, etc, and use the
wait_event() model.

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-12-14 14:54:46 -05:00
Mike Marshall 97f100277c Orangefs: de-uglify orangefs_devreq_writev, and devorangefs-req.c in general
AV dislikes many parts of orangefs_devreq_writev. Besides making
orangefs_devreq_writev more easily readable and better commented,
this patch makes an effort to address some of the problems:

 > The 5th is quietly ignored unless trailer_size is positive and
 > status is zero. If trailer_size > 0 && status == 0, you verify that
 > the length of the 5th segment is no more than trailer_size and copy
 > it to vmalloc'ed buffer. Without bothering to zero the rest of that
 > buffer out.

It was just wrong to allow a 5th segment that is not exactly equal to
trailer_size. Now that that's fixed, there's nothing to zero out in
the vmalloced buffer - it is exactly the right size to hold the
5th segment.

 > Another API bogosity: when the 5th segment is present, successful writev()
 > returns the sum of sizes of the first 4.

Added size of 5th segment to writev return...

 > if concatenation of the first 4 segments is longer than
 > 16 + sizeof(struct pvfs2_downcall_s) by no more than sizeof(long) => whine
 > and proceed with garbage.

If 4th segment isn't exactly sizeof(struct pvfs2_downcall_s), whine and fail.

 > if the 32bit value 4 bytes into op->downcall is zero and 64bit
 > value following it is non-zero, the latter is interpreted as the size of
 > trailer data.

The latter is what userspace claimed was the length of the trailer data.
The kernel module now compares it to the trailer iovec's iov_len as a
sanity check.

 > if there's no trailer, the 5th segment (if present) is completely ignored.

Whine and fail if there should be no trailer, yet a 5th segment is present.

 > if vmalloc fails, act as if status (32bit at offset 5 into
 > op->downcall) had been -ENOMEM and don't look at the 5th segment at all.

whine and fail with -ENOMEM.

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-12-14 13:32:05 -05:00
Mike Marshall b4cf67a2ba Orangef: remove overlooked old-style userspace debug parts
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-12-11 11:00:12 -05:00
Mike Marshall b5e376ea8b Orangefs: improve comments
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-12-11 10:50:42 -05:00
Mike Marshall 7cec28e91d Orangefs: don't keep checking stuff in on Friday afternoon.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-12-11 10:46:22 -05:00
Mike Marshall e91f1c8043 Orangefs: don't expose internal details of pathname resolution to userspace.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-12-04 13:06:55 -05:00
Mike Marshall 575e946125 Orangefs: change pvfs2 filenames to orangefs
Also changed references within source files that referred to
header files whose names had changed.

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-12-04 12:56:14 -05:00
Yi Liu 8bb8aefd5a OrangeFS: Change almost all instances of the string PVFS2 to OrangeFS.
OrangeFS was formerly known as PVFS2 and retains the name in many places.

I leave the device /dev/pvfs2-req since this affects userspace.

I leave the filesystem type pvfs2 since this affects userspace. Further
the OrangeFS sysint library reads fstab for an entry of type pvfs2
independently of kernel mounts.

I leave extended attribute keys user.pvfs2 and system.pvfs2 as the
sysint library understands these.

I leave references to userspace binaries still named pvfs2.

I leave the filenames.

Signed-off-by: Yi Liu <yi9@clemson.edu>
[martin@omnibond.com: clairify above constraints and merge]
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-12-03 14:45:44 -05:00
Al Viro 555fa0fa61 fs: out of bounds on stack in iov_iter_advance
On Wed, Nov 11, 2015 at 10:19:48AM +0000, Al Viro wrote:

> I'll cook the minimal fixup for API change after I get some sleep and
> send it your way, unless somebody gets there first...

This should do it - switches ->ioctl() to pvfs2_inode_[gs]etxattr() and
converts xattr_handler ->[gs]et() to new API.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-16 11:27:24 -05:00
Martin Brandenburg 24c8d0804b Orangefs: Clean up pvfs2_devreq_read.
* Kick invalid arguments out early, so handling them does not clutter
  the code.
* Avoid possibility of race by not releasing lock until completely done.
* Do not leak ops (memory) in certain error condition.
* Check for more error conditions.
* Put module name in all error and debug logs.
* Document behavior.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 14:50:20 -05:00
Martin Brandenburg f0ed4418d4 Orangefs: Remove upcall trailers which are not used.
Also removes remnants of iox (readx/writex) which previously used
trailers, but no longer exist.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 14:43:11 -05:00
Mike Marshall b5bbc84328 Orangefs: fix gossip statement
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 14:39:15 -05:00
Martin Brandenburg 6d0dd7684c Orangefs: Remove unused #defines from signal blocking code.
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 13:36:51 -05:00
Mike Marshall 3f1b6947dc Orangefs: set pos after generic_write_checks
if we are appending, generic_write_checks would have updated
pos to the end of the file...

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 13:05:11 -05:00
Al Viro 8092895f75 orangefs: validate the response in decode_dirents()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 12:02:12 -05:00
Al Viro ade1d48b78 orangefs: don't leave uninitialized data in ->trailer_buf
minimal fix; it would be better to reject such requests outright.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 11:57:34 -05:00
Al Viro 9be68b0871 orangefs: get rid of dec_string and enc_string
The latter is never used, the former has one user and would be
better off spelled out right there.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 11:56:17 -05:00
Al Viro ef4af94edc orangefs: switch decode_dirents() to use of kcalloc()
gets rid of multiplication overflow

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 11:55:39 -05:00
Al Viro 5714156be2 orangefs: sanitize pvfs2_convert_time_field()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 11:54:05 -05:00
Al Viro aada5c5872 orangefs: kill pointless ->link() and ->mknod()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 11:53:24 -05:00
Al Viro 75992b0fa9 pvfs2_fill_sb(): use kzalloc()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 11:52:52 -05:00
Al Viro 5c0dbbc64b orangefs: kill struct pvfs2_mount_sb_info_s
The only reason for that thing used to be the API of mount_nodev()
callback;  since we are calling pvfs2_fill_sb() ourselves now,
we don't have to shove everything into a single structure.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 11:39:31 -05:00
Al Viro b05a785109 orangefs: double iput() in case of d_make_root() failure
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 11:38:51 -05:00
Al Viro 16742f2d7c orangefs: use get_user_pages_fast(), not get_user_pages()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 11:38:02 -05:00
Al Viro a0435ca18e orangefs: kill kmap/kunmap wrappers
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 11:37:19 -05:00
Al Viro 74f68fce2a orangefs: make pvfs2_inode_read() take iov_iter
... and make the only caller use page-backed iov_iter,
getting rid of kmap/kunmap *and* of the bug with
attempted use of iovec-backed copy_page_to_iter()
on a kernel pointer.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 11:36:31 -05:00
Al Viro 0071ed1ec6 orangefs: make do_readv_writev() take iov_iter
no need to build a copy of what the caller already has;
what's more, we want the one given to caller properly
advanced *and* we shouldn't depend upon it being an
iovec-backed one.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 11:35:28 -05:00
Al Viro dc4067f671 orangefs: don't bother with splitting iovecs
copy_page_{to,from}_iter() advances it just fine *and* it has no
problem with partially consumed segments.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 11:23:02 -05:00
Al Viro 3c2fcfcb68 orangefs: make wait_for_direct_io() take iov_iter
incidentally, insane or compromised server returning *more* than
requested on read should not oops the kernel - initialize the
iov_iter for read according to the iovec we've got.  That's why
pvfs_bufmap_copy_to_iovec() needed a separate size argument - we
shouldn't abuse iov_iter_count(iter) for passing that.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 11:21:37 -05:00
Al Viro a5c126a522 orangefs: make precopy_buffers() take iov_iter
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 11:18:50 -05:00
Al Viro 5f0e3c953f orangefs: make postcopy_buffers() take iov_iter
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 11:11:55 -05:00
Al Viro 34204fde4c pvfs_bufmap_copy_from_iovec(): don't rely upon size being equal to iov_iter_count(iter)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 10:57:53 -05:00
Al Viro 5c278228bb orangefs: explicitly pass the size to pvfs_bufmap_copy_to_iovec()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13 10:25:01 -05:00
Mike Marshall 548049495c Orangefs: fix some checkpatch.pl complaints that had creeped in.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-05 13:44:24 -04:00
Martin Brandenburg 894ac432b4 Orangefs: Clean up error decoding.
Errors from the server need to be decoded. A bunch of code was imported from
the server to do this but much of it is convoluted and not even needed. The
result is better but still as convoluted as required by the protocol.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 12:04:46 -04:00
Martin Brandenburg 353908035f Orangefs: Use readonly mmap since writepage is not implemented.
Previously the code silently failed to update the disk. Now it will not
allow writable and shared mmaps.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:44:39 -04:00
Mike Marshall 1be21f865a Orangefs: don't use mount_nodev, use sget directly.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:44:37 -04:00
Mike Marshall 8c3905adea Orangefs: update signal blocking code before Oleg sees it.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:44:36 -04:00
Mike Marshall 50e01586f4 Orangefs: Don't opencode memcpy.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:44:35 -04:00
Mike Marshall f957ae2dec Orangefs: choose return codes from among the expected ones.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:44:34 -04:00
Mike Marshall d6fe654b7b Orangefs: put PVFS_util_min out of its misery.
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:44:33 -04:00
Mike Marshall 88309aae3d Orangefs: fix dir_emit code in pvfs2_readdir.
Al Viro glanced at readdir and surmised that getdents
would misbehave the way it was written... and sure enough.

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:44:32 -04:00
Mike Marshall 4d1c44043b Orangefs: use iov_iter interface
replace opencoded pvfs_bufmap_copy_to_kernel_iovec,
pvfs_bufmap_copy_to_user_iovec, pvfs_bufmap_copy_iovec_from_kernel,
and pvfs_bufmap_copy_iovec_from_user with pvfs_bufmap_copy_to_iovec
and pvfs_bufmap_copy_from_iovec, which both use the iov_iter
interface.

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:44:00 -04:00
Guenter Roeck 81b784b11e Orangefs: Swap order of include files
spinlock_types.h requires types from linux/types.h.
Including spinlock_types.h first may result in the following build errors,
as seen with arm:allmodconfig.

arch/arm/include/asm/spinlock_types.h:12:3: error: unknown type name 'u32'
arch/arm/include/asm/spinlock_types.h:16:4: error: unknown type name 'u16'

Fixes: deb4fb58ff73 ("Orangefs: kernel client part 2")
Cc: Mark Brown <broonie@kernel.org>
Cc: Mike Marshall <hubcap@omnibond.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:40:08 -04:00
Sasha Levin cb987f3cbe fs: orangefs: remove execute priviliges from module params
This makes no sense and causes warnings on boot.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:40:06 -04:00
Mike Marshall f0566532fe Orangefs: use inode_set_bytes for directories
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:40:05 -04:00
Mike Marshall c36316b74e Orangefs: large integer implicitly truncated to unsigned type
make.cross ARCH=tile doesn't like "inode->i_bytes = PAGE_CACHE_SIZE;",
so cast PAGE_CACHE_SIZE to unsigned short.

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:40:04 -04:00
Mike Marshall eeaa3d448c Orangefs: address problems found by static checker
Don't check for negative rc from boolean.

  Don't pointlessly initialize variables, it short-circuits
  gcc's uninitialized variable warnings. And max_new_nr_segs
  can never be zero, so don't check for it.

  Preserve original kstrdup pointer for freeing later.

  Don't check for negative value in unsigned variable.

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:40:03 -04:00
Mike Marshall 84d02150de Orangefs: sooth most sparse complaints
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:40:02 -04:00
Mike Marshall 2c590d5fb6 Orangefs: kernel client update 1.
Stephen Rothwell noticed that orangefs would not compile
on powerpc...

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:40:01 -04:00
Mike Marshall 07f01962e3 Orangefs: kernel client part 7
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:40:00 -04:00
Mike Marshall 1182fca3bc Orangefs: kernel client part 5
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:39:57 -04:00
Mike Marshall f7be4ee07f Orangefs: kernel client part 4
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:39:56 -04:00
Mike Marshall 274dcf55bd Orangefs: kernel client part 3
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:39:55 -04:00
Mike Marshall 5db11c21a9 Orangefs: kernel client part 2
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:39:54 -04:00
Mike Marshall f7ab093f74 Orangefs: kernel client part 1
OrangeFS (formerly PVFS) is an lgpl licensed userspace networked parallel
file system. OrangeFS can be accessed through included system utilities,
user integration libraries, MPI-IO and can be used by the Hadoop
ecosystem as an alternative to the HDFS filesystem. OrangeFS is used
widely for parallel science, data analytics and engineering applications.

While applications often don't require Orangefs to be mounted into
the VFS, users do like to be able to access their files in the normal way.
The Orangefs kernel client allows Orangefs filesystems to be mounted as
a VFS. The kernel client communicates with a userspace daemon which in
turn communicates with the Orangefs server daemons that implement the
filesystem. The server daemons (there's almost always more than one)
need not be running on the same host as the kernel client.

Orangefs filesystems can also be mounted with FUSE, and we
ship code and instructions to facilitate that, but most of our users
report preferring to use our kernel module instead. Further, as an example
of a problem we can't solve with fuse, we have in the works a
not-yet-ready-for-prime-time version of a file_operations lock function
that accounts for the server daemons being distributed across more
than one running kernel.

Many people and organizations, including Clemson University,
Argonne National Laboratories and Acxiom Corporation have
helped to create what has become Orangefs over more than twenty
years. Some of the more recent contributors to the kernel client
include:

  Mike Marshall
  Christoph Hellwig
  Randy Martin
  Becky Ligon
  Walt Ligon
  Michael Moore
  Rob Ross
  Phil Carnes

Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03 11:39:53 -04:00