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2016-08-02orangefs: Account for jiffies wraparound.Martin Brandenburg3-8/+8
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-02orangefs: Change default dcache and getattr timeout to 50 msec.Martin Brandenburg1-2/+2
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-02orangefs: Allow dcache and getattr cache time to be configured.Martin Brandenburg6-7/+52
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-02orangefs: Cache getattr results.Martin Brandenburg5-29/+34
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>
2016-08-02orangefs: Use d_time to avoid excessive lookupsMartin Brandenburg2-0/+9
Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-07-28Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds4-12/+8
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 ...
2016-07-26Merge branch 'akpm' (patches from Andrew)Linus Torvalds1-1/+1
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 ...
2016-07-26mm, memcg: use consistent gfp flags during readaheadMichal Hocko1-1/+1
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>
2016-07-05orangefs: fix namespace handlingJann Horn5-8/+15
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 f7ab093f74bf ("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>
2016-07-05Orangefs: allow O_DIRECT in openMike Marshall1-14/+11
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-07-05orangefs: Remove useless xattr prefix argumentsAndreas Gruenbacher4-66/+30
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>
2016-07-05orangefs: Remove redundant "trusted." xattr handlerAndreas Gruenbacher1-37/+0
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>
2016-07-05orangefs: Remove useless definesAndreas Gruenbacher4-28/+12
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>
2016-05-29orangefs: constify inode_operationsAl Viro4-6/+6
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-05-29orangefs: don't open-code %pd2Al Viro1-6/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-05-27switch xattr_handler->set() to passing dentry and inode separatelyAl Viro1-4/+6
preparation for similar switch in ->setxattr() (see the next commit for rationale). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-05-02orangefs: don't open-code inode_lock/inode_unlockAl Viro2-4/+4
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-05-02Merge getxattr prototype change into work.lookupsAl Viro1-4/+6
The rest of work.xattr stuff isn't needed for this branch
2016-04-10xattr_handler: pass dentry and inode as separate arguments of ->get()Al Viro1-4/+6
... and do not assume they are already attached to each other Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-04-09Merge tag 'for-linus-4.6-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linuxLinus Torvalds6-53/+28
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
2016-04-08orangefs: remove unused variableMartin Brandenburg1-3/+1
Signed-off-by: Martin Brandenburg <martin@omnibond.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-04-08orangefs: Add KERN_<LEVEL> to gossip_<level> macrosJoe Perches1-14/+17
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>
2016-04-08orangefs: strncpy -> strscpyMartin Brandenburg1-1/+5
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>
2016-04-08orangefs: clean up truncate ctime and mtime settingMartin Brandenburg1-15/+1
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>
2016-04-08Orangefs: fix ifnullfree.cocci warningskbuild test robot1-2/+1
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>
2016-04-08Orangefs: optimize boilerplate code.Mike Marshall2-2/+2
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>
2016-04-08Orangefs: xattr.c cleanupMike Marshall1-16/+1
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>
2016-04-04Merge branch 'PAGE_CACHE_SIZE-removal'Linus Torvalds3-8/+8
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
2016-04-04mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macrosKirill A. Shutemov3-8/+8
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>
2016-03-31orangefs: minimum userspace version is 2.9.3Martin Brandenburg1-1/+1
Version 2.9.4 isn't even released yet. Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-03-31orangefs: don't put readdir slot twiceMartin Brandenburg1-5/+3
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>
2016-03-26orangefs: fix orangefs_superblock lockingAl Viro3-58/+47
* 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>
2016-03-25orangefs: fix do_readv_writev() handling of error halfway throughAl Viro1-1/+1
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>
2016-03-25orangefs: have ->kill_sb() evict the VFS side of things firstAl Viro1-3/+3
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-25orangefs: sanitize ->llseek()Al Viro2-10/+3
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>
2016-03-25orangefs-bufmap.h: trim unused junkAl Viro1-9/+0
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-25orangefs: saner calling conventions for getting a slotAl Viro4-28/+16
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>
2016-03-25orangefs_copy_{to,from}_bufmap(): don't pass bufmap pointerAl Viro3-23/+14
it's always __orangefs_bufmap Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-25orangefs: get rid of readdir_handle_sAl Viro1-63/+30
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>
2016-03-23ornagefs: ensure that truncate has an up to date inode sizeMartin Brandenburg1-1/+12
Signed-off-by: Martin Brandenburg <martin@omnibond.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-23orangefs: move code which sets i_link to orangefs_inode_getattrMartin Brandenburg2-2/+1
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>
2016-03-23orangefs: remove needless wrapper around GFP_KERNELMartin Brandenburg2-5/+1
Signed-off-by: Martin Brandenburg <martin@omnibond.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-23orangefs: remove wrapper around mutex_lock(&inode->i_mutex)Martin Brandenburg1-6/+2
Signed-off-by: Martin Brandenburg <martin@omnibond.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-23orangefs: refactor inode type or link_target change detectionMartin Brandenburg1-41/+36
Signed-off-by: Martin Brandenburg <martin@omnibond.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-23orangefs: use new getattr for revalidate and remove old getattrMartin Brandenburg3-325/+49
Signed-off-by: Martin Brandenburg <martin@omnibond.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-23orangefs: use new getattr in inode getattr and permissionMartin Brandenburg1-12/+2
Signed-off-by: Martin Brandenburg <martin@omnibond.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-23orangefs: use new orangefs_inode_getattr to get size in write and llseekMartin Brandenburg1-6/+8
Signed-off-by: Martin Brandenburg <martin@omnibond.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-23orangefs: use new orangefs_inode_getattr to create new inodesMartin Brandenburg1-4/+2
Signed-off-by: Martin Brandenburg <martin@omnibond.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-03-23orangefs: rename orangefs_inode_getattr to orangefs_inode_old_getattrMartin Brandenburg5-10/+133
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>
2016-03-23orangefs: remove inode->i_lock wrapperMartin Brandenburg2-7/+4
Signed-off-by: Martin Brandenburg <martin@omnibond.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
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