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2005-12-03NFSv4: Fix an Oops in the synchronous write pathTrond Myklebust
- Missing initialisation of attribute bitmask in _nfs4_proc_write() - On success, _nfs4_proc_write() must return number of bytes written. - Missing post_op_update_inode() in _nfs4_proc_write() - Missing initialisation of attribute bitmask in _nfs4_proc_commit() - Missing post_op_update_inode() in _nfs4_proc_commit() Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-12-03NFS: Fix post-op attribute revalidation...Trond Myklebust
- Missing nfs_mark_for_revalidate in nfs_proc_link() - Missing nfs_mark_for_revalidate in nfs_rename() Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-12-03NFS: use set_page_writeback() in the appropriate placesTrond Myklebust
Ensure that we use set_page_writeback() in the appropriate places to help the VM in keeping its page radix_tree in sync. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-12-03NFS: Fix a few further cache consistency regressionsTrond Myklebust
Steve Dickson writes: Doing the following: 1. On server: $ mkdir ~/t $ echo Hello > ~/t/tmp 2. On client, wait for a string to appear in this file: $ until grep -q foo t/tmp ; do echo -n . ; sleep 1 ; done 3. On server, create a *new* file with the same name containing that string: $ mv ~/t/tmp ~/t/tmp.old; echo foo > ~/t/tmp will show how the client will never (and I mean never ;-) ) see the updated file. The problem is that we do not update nfsi->cache_change_attribute when the file changes on the server (we only update it when our client makes the changes). This again means that functions like nfs_check_verifier() will fail to register when the parent directory has changed and should trigger a dentry lookup revalidation. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-12-03NFS: Fix cache consistency regressionSteve Dickson
Make sure cache_change_attribute is initialized to jiffies so when the mtime changes on directory, the directory will be refreshed. Signed-off by: Steve Dickson <steved@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-25NFS: Fix a spinlock recursion inside nfs_update_inode()Trond Myklebust
In cases where the server has gone insane, nfs_update_inode() may end up calling nfs_invalidate_inode(), which again calls stuff that takes the inode->i_lock that we're already holding. In addition, given the sort of things we have in NFS these days that need to be cleaned up on inode release, I'm not sure we should ever be calling make_bad_inode(). Fix up spinlock recursion, and limit nfs_invalidate_inode() to clearing the caches, and marking the inode as being stale. Thanks to Steve Dickson <SteveD@redhat.com> for spotting this. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-25NFSv4: Fix typo in lock cachingTrond Myklebust
When caching locks due to holding a file delegation, we must always check against local locks before sending anything to the server. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-25NFSv4: Fix buggy nfs_wait_on_sequence()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-07[PATCH] kfree cleanup: fsJesper Juhl
This is the fs/ part of the big kfree cleanup patch. Remove pointless checks for NULL prior to calling kfree() in fs/. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-04NFS,SUNRPC,NLM: fix unused variable warnings when CONFIG_SYSCTL is disabledChuck Lever
Fix some dprintk's so that NLM, NFS client, and RPC client compile cleanly if CONFIG_SYSCTL is disabled. Test plan: Compile kernel with CONFIG_NFS enabled and CONFIG_SYSCTL disabled. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-04NFSv4: Teach NFSv4 to cache locks when we hold a delegationTrond Myklebust
Now that we have a method of dealing with delegation recalls, actually enable the caching of posix and BSD locks. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-04NFSv4: Recover locks too when returning a delegationTrond Myklebust
Delegations allow us to cache posix and BSD locks, however when the delegation is recalled, we need to "flush the cache" and send the cached LOCK requests to the server. This patch sets up the mechanism for doing so. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-04NFSv4: Fix recovery of flock() locks.Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-04NFSv4: Return any delegations before sillyrenaming the fileTrond Myklebust
I missed this one... Any form of rename will result in a delegation recall, so it is more efficient to return the one we hold before trying the rename. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-04NFSv4: Fix the handling of the error NFS4ERR_OLD_STATEIDTrond Myklebust
Ensure that we retry the failed operation... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-04NFSv4: Fix problem with OPEN_DOWNGRADETrond Myklebust
RFC 3530 states that for OPEN_DOWNGRADE "The share_access and share_deny bits specified must be exactly equal to the union of the share_access and share_deny bits specified for some subset of the OPENs in effect for current openowner on the current file. Setattr is currently violating the NFSv4 rules for OPEN_DOWNGRADE in that it may cause a downgrade from OPEN4_SHARE_ACCESS_BOTH to OPEN4_SHARE_ACCESS_WRITE despite the fact that there exists no open file with O_WRONLY access mode. Fix the problem by replacing nfs4_find_state() with a modified version of nfs_find_open_context(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-11-04NFSv4: Fix a race between open() and close()Trond Myklebust
We must not remove the nfs4_state structure from the inode open lists before we are in sequence lock. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-30[PATCH] NFS: Remove unbalanced spin_unlock() calls from nfs_refresh_inode()Trond Myklebust
Doh! Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-27NFS: Allow files that are open for write to invalidate cachesTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFSv4: Convert unnecessary XDR warning messages into dprintk()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFSv4: Add post-op attributes to NFSv4 write and commit callbacks.Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFSv4: Add post-op attributes to nfs4_proc_remove()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFSv4: Add post-op attributes to nfs4_proc_rename()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFSv4: Add post-op attributes to nfs4_proc_link()Trond Myklebust
Optimise attribute revalidation when hardlinking. Add post-op attributes for the directory and the original inode. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFS: Ensure that nfs_link() instantiates the dentry correctlyTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFS: Add optional post-op getattr instruction to the NFSv4 file close.Trond Myklebust
"Optional" means that the close call will not fail if the getattr at the end of the compound fails. If it does succeed, try to refresh inode attributes. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFS: Optimise attribute revalidation on close().Trond Myklebust
Only force a getattr in nfs_file_flush() if the attribute cache is stale. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFSv4: Add directory post-op attributes to the CREATE operations.Trond Myklebust
Since the directory attributes change every time we CREATE a file, we might as well pick up the new directory attributes in the same compound. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFS: nfs_lookup doesn't need to revalidate the parent directory's inodeChuck Lever
nfs_lookup() used to consult a lookup cache before trying an actual wire lookup operation. The lookup cache would be invalid, of course, if the parent directory's mtime had changed, so nfs_lookup performed an inode revalidation on the parent. Since nfs_lookup() doesn't use a cache anymore, the revalidation is no longer necessary. There are cases where it will generate a lot of unnecessary GETATTR traffic. See http://bugzilla.linux-nfs.org/show_bug.cgi?id=9 Test-plan: Use lndir and "rm -rf" and watch for excess GETATTR traffic or application level errors. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFS: Don't let nfs_end_data_update() clobber attribute update informationTrond Myklebust
Since we almost always call nfs_end_data_update() after we called nfs_refresh_inode(), we now end up marking the inode metadata as needing revalidation immediately after having updated it. This patch rearranges things so that we mark the inode as needing revalidation _before_ we call nfs_refresh_inode() on those operations that need it. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFS: Optimise inode attribute cache updatesTrond Myklebust
Allow nfs_refresh_inode() also to update attributes on the inode if the RPC call was sent after the last call to nfs_update_inode(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFS: Convert cache_change_attribute into a jiffy-based valueTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFS: Cleanup initialisation of struct nfs_fattrTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-27NFS: Fix a bad cast in nfs3_read_doneTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-20NFSv4: Fix up locking for nfs4_state_ownerTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-20NFSv4: Final tweak to sequence idTrond Myklebust
Sacrifice queueing fairness for performance. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Fix acl buffer sizeJ. Bruce Fields
resp_len is passed in as buffer size to decode routine; make sure it's set right in case where userspace provides less than a page's worth of buffer. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: handle no acl attrJ. Bruce Fields
Stop handing garbage to userspace in the case where a weird server clears the acl bit in the getattr return (despite the fact that they've already claimed acl support.) Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Fix an oopsable condition in nfs_free_seqidTrond Myklebust
Storing a pointer to the struct rpc_task in the nfs_seqid is broken since the nfs_seqid may be freed well after the task has been destroyed. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFS: Fix rename of directory onto empty directoryTrond Myklebust
If someone tries to rename a directory onto an empty directory, we currently fail and return EBUSY. This patch ensures that we try the rename if both source and target are directories, and that we fail with a correct error of EISDIR if the source is not a directory. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Ensure that we recover from the OPEN + OPEN_CONFIRM BAD_STATEID raceTrond Myklebust
If the server is in the unconfirmed OPEN state for a given open owner and receives a second OPEN for the same open owner, it will cancel the state of the first request and set up an OPEN_CONFIRM for the second. This can cause a race that is discussed in rfc3530 on page 181. The following patch allows the client to recover by retrying the original open request. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: If a delegated open fails, ensure that we return the delegationTrond Myklebust
Unless of course the open fails due to permission issues. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Return delegations in case we're changing ACLsTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Return delegation upon rename or removal of file.Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18[NFS]: Check that the server returns a valid regular file to our OPEN requestTrond Myklebust
Since it appears that some servers don't... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Eliminate nfsv4 open race...Trond Myklebust
Make NFSv4 return the fully initialized file pointer with the stateid that it created in the lookup w/intent. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18 NFS: Fix up a race in the NFS implementation of GETLKTrond Myklebust
...and fix a memory corruption bug due to improper use of memcpy() on a struct file_lock. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Fix up handling of open_to_lock sequence idsTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Make NFS clean up byte range locks asynchronouslyTrond Myklebust
Currently we fail to do so if the process was signalled. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Add missing handling of OPEN_CONFIRM requests on CLAIM_DELEGATE_CUR.Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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