Commit Graph

1582 Commits

Author SHA1 Message Date
Trond Myklebust
c48f4f3541 NFSv41: Convert the various reboot recovery ops etc to minor version ops
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:24:02 -04:00
Trond Myklebust
97dc135947 NFSv41: Clean up the NFSv4.1 minor version specific operations
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:24:02 -04:00
Trond Myklebust
a2118c33aa NFSv41: Don't store session state in the nfs_client->cl_state
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:24:02 -04:00
Trond Myklebust
df8964554a NFSv41: Further cleanup for nfs4_sequence_done
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>
2010-06-22 13:24:02 -04:00
Trond Myklebust
035168ab39 NFSv4.1: Make nfs4_setup_sequence take a nfs_server argument
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>
2010-06-22 13:24:02 -04:00
Trond Myklebust
71ac6da994 NFSv4.1: Merge the nfs41_proc_async_sequence() and nfs4_proc_sequence()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:24:01 -04:00
Trond Myklebust
aa5190d0ed NFSv4: Kill nfs4_async_handle_error() abuses by NFSv4.1
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:24:01 -04:00
Trond Myklebust
d185a334c7 NFSv4.1: Simplify nfs41_sequence_done()
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>
2010-06-22 13:24:01 -04:00
Trond Myklebust
2a6e26cdb8 NFSv4.1: Clean up nfs4_setup_sequence
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>
2010-06-22 13:24:01 -04:00
Trond Myklebust
d5f8d3fe72 NFSv41: Fix a memory leak in nfs41_proc_async_sequence()
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>
2010-06-22 13:24:01 -04:00
Trond Myklebust
d3f6baaa34 NFSv4: Fix an embarassing typo in encode_attrs()
Apparently, we have never been able to set the atime correctly from the
NFSv4 client.

Reported-by: 小倉一夫 <ka-ogura@bd6.so-net.ne.jp>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org
2010-06-22 13:22:54 -04:00
Trond Myklebust
0be8189f2c NFSv4: Ensure that /proc/self/mountinfo displays the minor version number
Currently, we do not display the minor version mount parameter in the
/proc mount info.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org
2010-06-22 13:22:53 -04:00
Trond Myklebust
44950b67a6 NFSv4.1: Ensure that we initialise the session when following a referral
Put the code that is common to both the referral and ordinary mount cases
into a common helper routine.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:22:53 -04:00
Andy Adamson
f799bdb355 nfs4 use mandatory attribute file type in nfs4_get_root
S_ISDIR(fsinfo.fattr->mode) checks the file type rather than the mode bits,
so we should be checking for the NFS_ATTR_FATTR_TYPE fattr property.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org
2010-06-22 13:17:43 -04:00
Christoph Hellwig
7ea8085910 drop unused dentry argument to ->fsync
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-27 22:05:02 -04:00
Trond Myklebust
0522f6aded NFS: Fix another nfs_wb_page() deadlock
J.R. Okajima reports that the call to sync_inode() in nfs_wb_page() can
deadlock with other writeback flush calls. It boils down to the fact
that we cannot ever call writeback_single_inode() while holding a page
lock (even if we do set nr_to_write to zero) since another process may
already be waiting in the call to do_writepages(), and so will deny us
the I_SYNC lock.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-26 08:43:53 -04:00
Trond Myklebust
c5efa5fc91 NFS: Ensure that we mark the inode as dirty if we exit early from commit
If we exit from nfs_commit_inode() without ensuring that the COMMIT rpc
call has been completed, we must re-mark the inode as dirty. Otherwise,
future calls to sync_inode() with the WB_SYNC_ALL flag set will fail to
ensure that the data is on the disk.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-26 08:43:52 -04:00
Trond Myklebust
59844a9bd7 NFS: Fix a lock imbalance typo in nfs_access_cache_shrinker
Commit 9c7e7e2337 (NFS: Don't call iput() in
nfs_access_cache_shrinker) unintentionally removed the spin unlock for the
inode->i_lock.

Reported-by: David Howells <dhowells@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-26 08:43:51 -04:00
Alexey Dobriyan
4be929be34 kernel-wide: replace USHORT_MAX, SHORT_MAX and SHORT_MIN with USHRT_MAX, SHRT_MAX and SHRT_MIN
- C99 knows about USHRT_MAX/SHRT_MAX/SHRT_MIN, not
  USHORT_MAX/SHORT_MAX/SHORT_MIN.

- Make SHRT_MIN of type s16, not int, for consistency.

[akpm@linux-foundation.org: fix drivers/dma/timb_dma.c]
[akpm@linux-foundation.org: fix security/keys/keyring.c]
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-25 08:07:02 -07:00
Trond Myklebust
9c7e7e2337 NFS: Don't call iput() in nfs_access_cache_shrinker
iput() can potentially attempt to allocate memory, so we should avoid
calling it in a memory shrinker. Instead, rely on the fact that iput() will
call nfs_access_zap_cache().

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:36 -04:00
Trond Myklebust
1a81bb8a1f NFS: Clean up nfs_access_zap_cache()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:35 -04:00
Trond Myklebust
61d5eb2985 NFS: Don't run nfs_access_cache_shrinker() when the mask is GFP_NOFS
Both iput() and put_rpccred() might allocate memory under certain
circumstances, so make sure that we don't recurse and deadlock...

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:35 -04:00
Trond Myklebust
93870d76fe NFS: Read requests can use GFP_KERNEL.
There is no danger of deadlock should the allocation trigger page
writeback.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:34 -04:00
Trond Myklebust
18eb884282 NFS: Clean up nfs_create_request()
There is no point in looping if we're out of memory.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:34 -04:00
Trond Myklebust
8535b2be51 NFSv4: Don't use GFP_KERNEL allocations in state recovery
We do not want to have the state recovery thread kick off and wait for a
memory reclaim, since that may deadlock when the writebacks end up
waiting for the state recovery thread to complete.

The safe thing is therefore to use GFP_NOFS in all open, close,
delegation return, lock, etc. operations that may be called by the
state recovery thread.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:33 -04:00
Chuck Lever
9bc4e3ca46 NFS: Calldata for nfs4_renew_done()
I'm about to change task->tk_start from a jiffies value to a ktime_t
value in order to make RPC RTT reporting more precise.

Recently (commit dc96aef9) nfs4_renew_done() started to reference
task->tk_start so that a jiffies value no longer had to be passed
from nfs4_proc_async_renew().  This allowed the calldata to point to
an nfs_client instead.

Changing task->tk_start to a ktime_t value makes it effectively
useless for renew timestamps, so we need to restore the pre-dc96aef9
logic that provided a jiffies "start" timestamp to nfs4_renew_done().

Both an nfs_client pointer and a timestamp need to be passed to
nfs4_renew_done(), so create a new nfs_renewdata structure that
contains both, resembling what is already done for delegreturn,
lock, and unlock.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:32 -04:00
Chuck Lever
dfe52c0419 NFS: Squelch compiler warning in nfs_add_server_stats()
Clean up:

fs/nfs/iostat.h: In function ‘nfs_add_server_stats’:
fs/nfs/iostat.h:41: warning: comparison between signed and unsigned integer expressions
fs/nfs/iostat.h:41: warning: comparison between signed and unsigned integer expressions
fs/nfs/iostat.h:41: warning: comparison between signed and unsigned integer expressions
fs/nfs/iostat.h:41: warning: comparison between signed and unsigned integer expressions

Commit fce22848 replaced the open-coded per-cpu logic in several
functions in fs/nfs/iostat.h with a single invocation of
this_cpu_ptr().  This macro assumes its second argument is signed,
not unsigned.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:31 -04:00
Chuck Lever
a6d5ff64ba NFS: Clean up fscache_uniq mount option
Clean up: fscache_uniq takes a string, so it should be included
with the other string mount option definitions, by convention.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:31 -04:00
Chuck Lever
0f15c53d5b NFS: Squelch compiler warning
Seen with -Wextra:

/home/cel/linux/fs/nfs/fscache.c: In function ‘__nfs_readpages_from_fscache’:
/home/cel/linux/fs/nfs/fscache.c:479: warning: comparison between signed and unsigned integer expressions

The comparison implicitly converts "int" to "unsigned", making it
safe.  But there's no need for the implicit type conversions here, and
the dfprintk() already uses a "%u" formatter for "npages."  Better to
reduce confusion.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:31 -04:00
Trond Myklebust
bb8b27e504 NFSv4: Clean up the NFSv4 setclientid operation
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:30 -04:00
Trond Myklebust
d7cf8dd012 NFSv4: Allow attribute caching with 'noac' mounts if client holds a delegation
If the server has given us a delegation on a file, we _know_ that we can
cache the attribute information even when the user has specified 'noac'.

Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:30 -04:00
Trond Myklebust
fd86dfd263 NFSv4: Fix up the documentation for nfs_do_refmount
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:29 -04:00
Trond Myklebust
1b4c6065b9 NFS: Replace nfsroot on-stack filehandle
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:28 -04:00
Trond Myklebust
b157b06ca2 NFS: Cleanup file handle allocations in fs/nfs/super.c
Use the new helper functions instead of open coding.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:28 -04:00
Trond Myklebust
ce587e07ba NFS: Prevent the mount code from looping forever on broken exports
Keep a global count of how many referrals that the current task has
traversed on a path lookup. Return ELOOP if the count exceeds
MAX_NESTED_LINKS.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:28 -04:00
Trond Myklebust
6e94d62993 NFS: Reduce stack footprint of nfs3_proc_getacl() and nfs3_proc_setacl()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:28 -04:00
Trond Myklebust
ca7e9a0df2 NFS: Reduce stack footprint of nfs_statfs()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:27 -04:00
Trond Myklebust
987f8dfc98 NFS: Reduce stack footprint of nfs_setattr()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:27 -04:00
Trond Myklebust
0ab64e0e14 NFS: Reduce stack footprint of nfs4_proc_create()
Move the O_EXCL open handling into _nfs4_do_open() where it belongs. Doing
so also allows us to reuse the struct fattr from the opendata.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:27 -04:00
Trond Myklebust
23a306120f NFS: Reduce the stack footprint of nfs_proc_symlink()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:27 -04:00
Trond Myklebust
eb872f0c8e NFS: Reduce the stack footprint of nfs_proc_create
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:26 -04:00
Trond Myklebust
39967ddf19 NFS: Reduce the stack footprint of nfs_rmdir
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:26 -04:00
Trond Myklebust
d346890bea NFS: Reduce stack footprint of nfs_proc_remove()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:26 -04:00
Trond Myklebust
3b14d6542d NFS: Reduce stack footprint of nfs3_proc_readlink()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:25 -04:00
Trond Myklebust
136f2627c9 NFS: Reduce the stack footprint of nfs_link()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:25 -04:00
Trond Myklebust
aa49b4cf7d NFS: Reduce stack footprint of nfs_readdir()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:25 -04:00
Trond Myklebust
011fff7239 NFS: Reduce stack footprint of nfs3_proc_rename() and nfs4_proc_rename()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:25 -04:00
Trond Myklebust
a3cba2aad9 NFS: Reduce stack footprint of nfs_revalidate_inode()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:24 -04:00
Trond Myklebust
c407d41a16 NFSv4: Reduce stack footprint of nfs4_proc_access() and nfs3_proc_access()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:24 -04:00
Trond Myklebust
4f727296d2 NFSv4: Reduce the stack footprint of nfs4_remote_referral_get_sb
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-05-14 15:09:23 -04:00