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2012-02-17nfsd41: share_access_to_flags should consider only nfs4.x share_access flagsBenny Halevy
Currently, it will not correctly ignore any nfsv4.1 signal flags if the client sends them. Signed-off-by: Benny Halevy <bhalevy@tonian.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-02-16ecryptfs: remove the second argument of k[un]map_atomic()Cong Wang
Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
2012-02-16eCryptfs: Copy up lower inode attrs after setting lower xattrTyler Hicks
After passing through a ->setxattr() call, eCryptfs needs to copy the inode attributes from the lower inode to the eCryptfs inode, as they may have changed in the lower filesystem's ->setxattr() path. One example is if an extended attribute containing a POSIX Access Control List is being set. The new ACL may cause the lower filesystem to modify the mode of the lower inode and the eCryptfs inode would need to be updated to reflect the new mode. https://launchpad.net/bugs/926292 Signed-off-by: Tyler Hicks <tyhicks@canonical.com> Reported-by: Sebastien Bacher <seb128@ubuntu.com> Cc: John Johansen <john.johansen@canonical.com> Cc: <stable@vger.kernel.org>
2012-02-16eCryptfs: Improve statfs reportingTyler Hicks
statfs() calls on eCryptfs files returned the wrong filesystem type and, when using filename encryption, the wrong maximum filename length. If mount-wide filename encryption is enabled, the cipher block size and the lower filesystem's max filename length will determine the max eCryptfs filename length. Pre-tested, known good lengths are used when the lower filesystem's namelen is 255 and a cipher with 8 or 16 byte block sizes is used. In other, less common cases, we fall back to a safe rounded-down estimate when determining the eCryptfs namelen. https://launchpad.net/bugs/885744 Signed-off-by: Tyler Hicks <tyhicks@canonical.com> Reported-by: Kees Cook <keescook@chromium.org> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: John Johansen <john.johansen@canonical.com>
2012-02-16nfs: Clean up debugging in nfs_follow_mountpoint()Chuck Lever
Clean up: Fix a debugging message which had an obsolete function name in it (nfs_follow_mountpoint). Introduced by commit 36d43a43 "NFS: Use d_automount() rather than abusing follow_link()" (January 14, 2011) Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-02-16Btrfs: fix a bug on overcommit stuffLiu Bo
When overcommitting, we should check the sum of pinned space and bytes for delayed item. Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
2012-02-16Btrfs: kick out redundant stuff in convert_extent_bitLiu Bo
clear_state_bit will do merge_state for us, so kick out the redundant one. Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
2012-02-16Btrfs: skip states when they does not contain bits to clearLiu Bo
Clearing a range's bits is different with setting them, since we don't need to touch them when states do not contain bits we want. Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
2012-02-16Btrfs: check return value of lookup_extent_mapping() correctlyTsutomu Itoh
This patch corrects error checking of lookup_extent_mapping(). Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
2012-02-16Btrfs: fix deadlock on page lock when doing auto-defragmentMiao Xie
When I ran xfstests circularly on a auto-defragment btrfs, the deadlock happened. Steps to reproduce: [tty0] # export MOUNT_OPTIONS="-o autodefrag" # export TEST_DEV=<partition1> # export TEST_DIR=<mountpoint1> # export SCRATCH_DEV=<partition2> # export SCRATCH_MNT=<mountpoint2> # while [ 1 ] > do > ./check 091 127 263 > sleep 1 > done [tty1] # while [ 1 ] > do > echo 3 > /proc/sys/vm/drop_caches > done Several hours later, the test processes will hang on, and the deadlock will happen on page lock. The reason is that: Auto defrag task Flush thread Test task btrfs_writepages() add ordered extent (including page 1, 2) set page 1 writeback set page 2 writeback endio_fn() end page 2 writeback release page 2 lock page 1 alloc and lock page 2 page 2 is not uptodate btrfs_readpage() start ordered extent() btrfs_writepages() try to lock page 1 so deadlock happens. Fix this bug by unlocking the page which is in writeback, and re-locking it after the writeback end. Signed-off-by: Miao Xie <miax@cn.fujitsu.com>
2012-02-16Btrfs: fix return value check of extent_io_opsTsutomu Itoh
This patch adds the check on the return value of extent_io_ops. Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
2012-02-16btrfs: honor umask when creating subvol rootFlorian Albrechtskirchinger
Set the subvol root inode permissions based on the current umask.
2012-02-15nfsd41: use current stateid by valueTigran Mkrtchyan
Signed-off-by: Tigran Mkrtchyan <kofemann@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-02-15nfsd41: consume current stateid on DELEGRETURN and OPENDOWNGRADETigran Mkrtchyan
Signed-off-by: Tigran Mkrtchyan <kofemann@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-02-15nfsd41: handle current stateid in SETATTR and FREE_STATEIDTigran Mkrtchyan
Signed-off-by: Tigran Mkrtchyan <kofemann@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-02-15nfsd41: mark LOOKUP, LOOKUPP and CREATE to invalidate current stateidTigran Mkrtchyan
Signed-off-by: Tigran Mkrtchyan <kofemann@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-02-15nfsd41: save and restore current stateid with current fhTigran Mkrtchyan
Signed-off-by: Tigran Mkrtchyan <kofemann@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-02-15nfsd41: mark PUTFH, PUTPUBFH and PUTROOTFH to clear current stateidTigran Mkrtchyan
Signed-off-by: Tigran Mkrtchyan <kofemann@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-02-15nfsd41: consume current stateid on read and writeTigran Mkrtchyan
Signed-off-by: Tigran Mkrtchyan <kofemann@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-02-15nfsd41: handle current stateid on lock and lockuTigran Mkrtchyan
Signed-off-by: Tigran Mkrtchyan <kofemann@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-02-15nfsd41: handle current stateid in open and closeTigran Mkrtchyan
Signed-off-by: Tigran Mkrtchyan <kofemann@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-02-15nfsd4: initialize current stateid at compile timeTigran Mkrtchyan
Signed-off-by: Tigran Mkrtchyan <kofemann@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-02-15nfs41: Verify channel's attributes accordingly to RFC v2Vitaliy Gusev
ca_maxoperations: For the backchannel, the server MUST NOT change the value the client offers. For the fore channel, the server MAY change the requested value. ca_maxrequests: For the backchannel, the server MUST NOT change the value the client offers. For the fore channel, the server MAY change the requested value. Signed-off-by: Vitaliy Gusev <gusev.vitaliy@nexenta.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-02-15btrfs: silence warning in raid array setupDavid Sterba
Raid array setup code creates an extent buffer in an usual way. When the PAGE_CACHE_SIZE is > super block size, the extent pages are not marked up-to-date, which triggers a WARN_ON in the following write_extent_buffer call. Add an explicit up-to-date call to silence the warning. Signed-off-by: David Sterba <dsterba@suse.cz>
2012-02-15btrfs: fix structs where bitfields and spinlock/atomic share 8B wordDavid Sterba
On ia64, powerpc64 and sparc64 the bitfield is modified through a RMW cycle and current gcc rewrites the adjacent 4B word, which in case of a spinlock or atomic has disaterous effect. https://lkml.org/lkml/2012/2/1/220 Signed-off-by: David Sterba <dsterba@suse.cz>
2012-02-15btrfs: delalloc for page dirtied out-of-band in fixup workerJeff Mahoney
We encountered an issue that was easily observable on s/390 systems but could really happen anywhere. The timing just seemed to hit reliably on s/390 with limited memory. The gist is that when an unexpected set_page_dirty() happened, we'd run into the BUG() in btrfs_writepage_fixup_worker since it wasn't properly set up for delalloc. This patch does the following: - Performs the missing delalloc in the fixup worker - Allow the start hook to return -EBUSY which informs __extent_writepage that it should mark the page skipped and not to redirty it. This is required since the fixup worker can fail with -ENOSPC and the page will have already been redirtied. That causes an Oops in drop_outstanding_extents later. Retrying the fixup worker could lead to an infinite loop. Deferring the page redirty also saves us some cycles since the page would be stuck in a resubmit-redirty loop until the fixup worker completes. It's not harmful, just wasteful. - If the fixup worker fails, we mark the page and mapping as errored, and end the writeback, similar to what we would do had the page actually been submitted to writeback. Signed-off-by: Jeff Mahoney <jeffm@suse.com>
2012-02-15Btrfs: fix memory leak in load_free_space_cache()Tsutomu Itoh
load_free_space_cache() has forgotten to free path. Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
2012-02-15btrfs: don't check DUP chunks twiceArne Jansen
Because scrub enumerates the dev extent tree to find the chunks to scrub, it currently finds each DUP chunk twice and also scrubs it twice. This patch makes sure that scrub_chunk only checks that part of the chunk the dev extent has been found for. This only changes the behaviour for DUP chunks. Reported-and-tested-by: Stefan Behrens <sbehrens@giantdisaster.de> Signed-off-by: Arne Jansen <sensille@gmx.net>
2012-02-15Btrfs: fix trim 0 bytes after a device deleteLiu Bo
A user reported a bug of btrfs's trim, that is we will trim 0 bytes after a device delete. The reproducer: $ mkfs.btrfs disk1 $ mkfs.btrfs disk2 $ mount disk1 /mnt $ fstrim -v /mnt $ btrfs device add disk2 /mnt $ btrfs device del disk1 /mnt $ fstrim -v /mnt This is because after we delete the device, the block group may start from a non-zero place, which will confuse trim to discard nothing. Reported-by: Lutz Euler <lutz.euler@freenet.de> Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
2012-02-15Btrfs: return the internal error unchanged if btrfs_get_extent_fiemap() call ↵Jeff Liu
failed for SEEK_DATA/SEEK_HOLE inquiry Given that ENXIO only means "offset beyond EOF" for either SEEK_DATA or SEEK_HOLE inquiry in a desired file range, so we should return the internal error unchanged if btrfs_get_extent_fiemap() call failed, rather than ENXIO. Cc: Dave Chinner <david@fromorbit.com> Signed-off-by: Jie Liu <jeff.liu@oracle.com>
2012-02-15Btrfs: avoid positive number with ERR_PTRJan Schmidt
inode_ref_info() returns 1 when the element wasn't found and < 0 on error, just like btrfs_search_slot(). In iref_to_path() it's an error when the inode ref can't be found, thus we return ERR_PTR(ret) in that case. In order to avoid ERR_PTR(1), we now set ret to -ENOENT in that case. Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
2012-02-15btrfs: Sector Size check during MountKeith Mannthey
Gracefully fail when trying to mount a BTRFS file system that has a sectorsize smaller than PAGE_SIZE. On PPC it is possible to build a FS while using a 4k PAGE_SIZE kernel then boot into a 64K PAGE_SIZE kernel. Presently open_ctree fails in an endless loop and hangs the machine in this situation. My debugging has show this Sector size < Page size to be a non trivial situation and a graceful exit from the situation would be nice for the time being. Signed-off-by: Keith Mannthey <kmannth@us.ibm.com>
2012-02-15NFS: dont allow minorversion= opt when vers != 4Weston Andros Adamson
Don't allow invalid 'vers' and 'minorversion' combinations in mount options, such as "vers=3,minorversion=1". Signed-off-by: Weston Andros Adamson <dros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-02-15NFSv4: Further reduce the footprint of the idmapperTrond Myklebust
Don't allocate the legacy idmapper tables until we actually need them. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Reviewed-by: Jeff Layton <jlayton@redhat.com>
2012-02-15NFSv4: The idmapper now depends on keyring functionalityTrond Myklebust
Add the appropriate 'select KEYS' to the NFSv4 Kconfig entry. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-02-15NFSv4: Reduce the footprint of the idmapperTrond Myklebust
Instead of pre-allocating the storage for all the strings, we can significantly reduce the size of that table by doing the allocation when we do the downcall. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Reviewed-by: Jeff Layton <jlayton@redhat.com>
2012-02-15NFS: add mount options 'v4.0' and 'v4.1'Weston Andros Adamson
Signed-off-by: Weston Andros Adamson <dros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-02-15NFS: fix nfs4_find_client_sessionid() arguments listStanislav Kinsbursky
It's not compilable in case of CONFIG_NFS_V4_1 is not set. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-02-15NFS: Initialise the nfs_net->nfs_client_lockTrond Myklebust
Ensure that we initialise the nfs_net->nfs_client_lock spinlock. Also ensure that nfs_server_remove_lists() doesn't try to dereference server->nfs_client before that is initialised. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Stanislav Kinsbursky <skinsbursky@parallels.com>
2012-02-15Lockd: shutdown NLM hosts in network namespace contextStanislav Kinsbursky
Lockd now managed in network namespace context. And this patch introduces network namespace related NLM hosts shutdown in case of releasing per-net Lockd resources. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-02-15LockD: make NSM network namespace awareStanislav Kinsbursky
NLM host is network namespace aware now. So NSM have to take it into account. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-02-15LockD: make nlm hosts network namespace awareStanislav Kinsbursky
This object depends on RPC client, and thus on network namespace. So let's make it's allocation and lookup in network namespace context. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-02-15Lockd: per-net up and down routines introducedStanislav Kinsbursky
This patch introduces per-net Lockd initialization and destruction routines. The logic is the same as in global Lockd up and down routines. Probably the solution is not the best one. But at least it looks clear. So per-net "up" routine are called only in case of lockd is running already. If per-net resources are not allocated yet, then service is being registered with local portmapper and lockd sockets created. Per-net "down" routine is called on every lockd_down() call in case of global users counter is not zero. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-02-15Lockd: pernet usage counter introducedStanislav Kinsbursky
Lockd is going to be shared between network namespaces - i.e. going to be able to handle lock requests from different network namespaces. This means, that network namespace related resources have to be allocated not once (like now), but for every network namespace context, from which service is requested to operate. This patch implements Lockd per-net users accounting. New per-net counter is used to determine, when per-net resources have to be freed. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-02-15Lockd: create permanent lockd sockets in current network namespaceStanislav Kinsbursky
This patch parametrizes Lockd permanent sockets creation routine by network namespace context. It also replaces hard-coded init_net with current network namespace context in Lockd sockets creation routines. This approach looks safe, because Lockd is created during NFS mount (or NFS server start) and thus socket is required exactly in current network namespace context. But in the same time it means, that Lockd sockets inherits first Lockd requester network namespace. This issue will be fixed in further patches of the series. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-02-15NFSv4.1: Add a module parameter to set the number of session slotsTrond Myklebust
Add the module parameter 'max_session_slots' to set the initial number of slots that the NFSv4.1 client will attempt to negotiate with the server. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-02-15NFSv4.1: Convert slotid from u8 to u32Trond Myklebust
It is perfectly legal to negotiate up to 2^32-1 slots in the protocol, and with 10GigE, we are already seeing that 255 slots is far too limiting. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-02-14nfsd4: check for uninitialized slotJ. Bruce Fields
This fixes an oops when a buggy client tries to use an initial seqid of 0 on a new slot, which we may misinterpret as a replay. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-02-14nfsd4: rearrange struct nfsd4_slotJ. Bruce Fields
Combine two booleans into a single flag field, move the smaller fields to the end. (In practice this doesn't make the struct any smaller. But we'll be adding another flag here soon.) Remove some debugging code that doesn't look useful, while we're in the neighborhood. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2012-02-13Merge git://git.samba.org/sfrench/cifs-2.6Linus Torvalds
* git://git.samba.org/sfrench/cifs-2.6: cifs: don't return error from standard_receive3 after marking response malformed cifs: request oplock when doing open on lookup cifs: fix error handling when cifscreds key payload is an error
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