| Commit message (Collapse) | Author | Age |
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Add a flag so we know if we mounted the NFS server using the legacy
binary interface. If we used the legacy interface, then we should not
show the mountd options.
Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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The delegation is protected by RCU now, so we need to replace the
nfsi->rwsem protection with an rcu protected section.
Reported-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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This will allow us to save the original generic cred in rpc_message, so
that if we migrate from one server to another, we can generate a new bound
cred without having to punt back to the NFS layer.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Fix up those functions that depend on knowing whether or not
rpc_restart_call is successful or not.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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There is no real reason to have RPC_ASSASSINATED() checks in the NFS code.
As far as it is concerned, this is just an RPC error...
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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In RFC5661, an NFS4ERR_DELAY error on a SEQUENCE operation has the special
meaning that the server is not finished processing the request. In this
case we want to just retry the request without touching the slot.
Also fix a bug whereby we would fail to update the sequence id if the
server returned any error other than NFS_OK/NFS4ERR_DELAY.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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We don't really support nfs servers that invalidate the file handle after a
rename, so precautions such as flushing out dirty data before renaming the
file are superfluous.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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There is no need to flush out writes before calling nfs_wb_all().
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Christoph points out that the VFS will always flush out data before calling
nfs_fsync(), so we can dispense with a full call to nfs_wb_all(), and
replace that with a simpler call to nfs_commit_inode().
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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flock locks want to be labelled using the process pid, while posix locks
want to be labelled using the fl_owner.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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This is needed by NFSv4.0 servers in order to keep the number of locking
stateids at a manageable level.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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This patch fixes bugzilla entry 14501:
https://bugzilla.kernel.org/show_bug.cgi?id=14501
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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The 'so_delegations' list appears to be unused.
Also eliminate so_client. If we already have so_server, we can get to the
nfs_client structure.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Set up a flag to ensure that is indeed the case.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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There is no reason to change the nfs_client state every time we allocate a
new session. Move that line into nfs4_init_client_minor_version.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Instead of testing if the nfs_client has a session, we should be testing if
the struct nfs4_sequence_res was set up with one.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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In anticipation of the day when we have per-filesystem sessions, and also
in order to allow the session to change in the event of a filesystem
migration event.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Nobody uses the rpc_status parameter.
It is not obvious why we need the struct nfs_client argument either, when
we already have that information in the session.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Firstly, there is little point in first zeroing out the entire struct
nfs4_sequence_res, and then initialising all fields save one. Just
initialise the last field to zero...
Secondly, nfs41_setup_sequence() has only 2 possible return values: 0, or
-EAGAIN, so there is no 'terminate rpc task' case.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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If the call to rpc_call_async() fails, then the arguments will not be
freed, since there will be no call to nfs41_sequence_call_done
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: add retrieve request
fuse: add store request
fuse: don't use atomic kmap
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Userspace filesystem can request data to be retrieved from the inode's
mapping. This request is synchronous and the retrieved data is queued
as a new request. If the write to the fuse device returns an error
then the retrieve request was not completed and a reply will not be
sent.
Only present pages are returned in the retrieve reply. Retrieving
stops when it finds a non-present page and only data prior to that is
returned.
This request doesn't change the dirty state of pages.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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Userspace filesystem can request data to be stored in the inode's
mapping. This request is synchronous and has no reply. If the write
to the fuse device returns an error then the store request was not
fully completed (but may have updated some pages).
If the stored data overflows the current file size, then the size is
extended, similarly to a write(2) on the filesystem.
Pages which have been completely stored are marked uptodate.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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Don't use atomic kmap for mapping userspace buffers in device
read/write/splice.
This is necessary because the next patch (adding store notify)
requires that caller of fuse_copy_page() may sleep between
invocations. The simplest way to ensure this is to change the atomic
kmaps to non-atomic ones.
Thankfully architectures where kmap() is not a no-op are going out of
fashion, so we can ignore the (probably negligible) performance impact
of this change.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2: (45 commits)
nilfs2: reject filesystem with unsupported block size
nilfs2: avoid rec_len overflow with 64KB block size
nilfs2: simplify nilfs_get_page function
nilfs2: reject incompatible filesystem
nilfs2: add feature set fields to super block
nilfs2: clarify byte offset in super block format
nilfs2: apply read-ahead for nilfs_btree_lookup_contig
nilfs2: introduce check flag to btree node buffer
nilfs2: add btree get block function with readahead option
nilfs2: add read ahead mode to nilfs_btnode_submit_block
nilfs2: fix buffer head leak in nilfs_btnode_submit_block
nilfs2: eliminate inline keywords in btree implementation
nilfs2: get maximum number of child nodes from bmap object
nilfs2: reduce repetitive calculation of max number of child nodes
nilfs2: optimize calculation of min/max number of btree node children
nilfs2: remove redundant pointer checks in bmap lookup functions
nilfs2: get rid of nilfs_bmap_union
nilfs2: unify bmap set_target_v operations
nilfs2: get rid of nilfs_btree uses
nilfs2: get rid of nilfs_direct uses
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This inserts sanity check that refuses to mount a filesystem with
unsupported block size.
Previously, kernel code of nilfs was looking only limitation of
devices though mkfs.nilfs2 limits the range of block sizes; there was
no check that prevents rec_len overflow with larger block sizes.
With this change, block sizes larger than 64KB or smaller than 1KB
will get rejected explicitly by kernel.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
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With 64KB blocksize, a directory entry can have size 64KB which does
not fit into 16 bits we have for entry length. So this patch stores
0xffff instead and converts value when read from / written to disk.
Nilfs derives its directory implementation from ext2 filesystem, and
this draws upon the corresponding change on ext2.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
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Implementation of nilfs_get_page() is a bit old as below:
- A common read_mapping_page inline function is now available instead
of its read_cache_page use.
- wait_on_page_locked() use in the function is eliminable since
read_cache_page function does the same thing through wait_on_page_read().
- PageUptodate() check is eliminable for the same reason.
This renews nilfs_get_page() based on these points.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
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This forces nilfs to check compatibility of feature flags so as to
reject a filesystem with unknown features when it mounts or remounts
the filesystem.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
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This applies read-ahead to nilfs_btree_do_lookup and
nilfs_btree_lookup_contig functions and extends them to read ahead
siblings of level 1 btree nodes that hold data blocks.
At present, the read-ahead is not applied to most btree operations;
only get_block() callback function, which is used during read of
regular files or directories, receives the benefit.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
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nilfs_btree_get_block() now may return untested buffer due to
read-ahead. This adds a new flag for buffer heads so that the btree
code can check whether the buffer is already verified or not.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
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This adds __nilfs_btree_get_block() function that can issue a series
of read-ahead requests for sibling btree nodes.
This read-ahead needs parent node block, so nilfs_btree_readahead_info
structure is added to pass the information that
__nilfs_btree_get_block() needs.
This also replaces the previous nilfs_btree_get_block() implementation
with a wrapper function of __nilfs_btree_get_block().
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
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This adds mode argument to nilfs_btnode_submit_block() function and
allows it to issue a read-ahead request.
An optional submit_ptr argument is also added to store the actual
block address for which bio is sent. submit_ptr is used for a series
of read-ahead requests, and helps to decide if each requested block is
continous to the previous one on disk.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
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nilfs_btnode_submit_block() refers to buffer head just before
returning from the function, but it releases the buffer head earlier
than that if nilfs_dat_translate() gets an error.
This has potential for oops in the erroneous case. This fixes the
issue.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
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This removes all inline uses from btree.c. Gcc now agressively apply
inline expansion even for the functions declared without the keyword;
the inline use in btree.c looks excessive.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
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The patch "reduce repetitive calculation of max number of child nodes"
gathered up the calculation of maximum number of child nodes into
nilfs_btree_nchildren_per_block() function. This makes the function
get resultant value from a private variable in bmap object instead of
calculating it for each call.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
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The current btree implementation repeats the same calculation on the
maximum number of child nodes. This is because a few low level
routines use the calculation for index addressing in a btree node
block.
This reduces the calculation by explicitly passing the maximum number
of child nodes (ncmax) through their argument.
This changes parameter passing of the following functions:
- nilfs_btree_node_dptrs
- nilfs_btree_node_get_ptr
- nilfs_btree_node_set_ptr
- nilfs_btree_node_init
- nilfs_btree_node_move_left
- nilfs_btree_node_move_right
- nilfs_btree_node_insert
- nilfs_btree_node_delete, and
- nilfs_btree_get_node
The following functions are removed:
- nilfs_btree_node_nchildren_min
- nilfs_btree_node_nchildren_max
Most middle level btree operations are rewritten to pass a proper
ncmax value depending on whether each occurrence of node is "root" or
not.
A constant NILFS_BTREE_ROOT_NCHILDREN_MAX is used for the root node,
whereas nilfs_btree_nchildren_per_block() function is used for
non-root nodes. If a node could be either root or a non-root node, an
output argument of nilfs_btree_get_node() is used to set up ncmax.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
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nilfs_btree_node_nchildren_max() and nilfs_btree_node_nchildren_min()
functions switch return value depending on whether target node is the
root or a node block. In most uses of these functions, however, the
node type is fixed, and moreover the same calculation is repeatedly
performed in loop.
This unfold these functions depending on context and move them outside
loops wherever possible.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
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nilfs_bmap_lookup and its variants are supposed to take a valid
pointer argument to return a block address, thus pointer checks in
nilfs_btree_lookup and nilfs_direct_lookup are needless.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
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This removes nilfs_bmap_union and finally unifies three structures and
the union in bmap/btree code into one.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
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