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2007-02-11[PATCH] igrab() should check for I_CLEARJan Blunck1-1/+1
When igrab() is calling __iget() on an inode it should check if clear_inode() has been called on the inode already. Otherwise there is a race window between clear_inode() and destroy_inode() where igrab() calls __iget() which leads to already free inodes on the inode lists. Signed-off-by: Vandana Rungta <vandana@novell.com> Signed-off-by: Jan Blunck <jblunck@suse.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] avoid one conditional branch in touch_atime()Eric Dumazet1-3/+1
I added IS_NOATIME(inode) macro definition in include/linux/fs.h, true if the inode superblock is marked readonly or noatime. This new macro is then used in touch_atime() instead of separatly testing MS_RDONLY and MS_NOATIME Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] convert ramfs to use __set_page_dirty_no_writebackKen Chen2-2/+2
As pointed out by Hugh, ramfs would also benefit from using the new set_page_dirty aop method for memory backed file systems. Signed-off-by: Ken Chen <kenchen@google.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Drop get_zone_counts()Christoph Lameter1-7/+2
Values are available via ZVC sums. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Remove final references to deprecated "MAP_ANON" page protection flagRobert P. J. Day2-2/+2
Remove the last vestiges of the long-deprecated "MAP_ANON" page protection flag: use "MAP_ANONYMOUS" instead. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-09[PATCH] uclinux: correctly remap bin_fmtflat exe allocated mem regionsGreg Ungerer1-7/+24
remap() the region we get from mmap() to mark the fact that we are using all of the available slack space. Any slack space is used to form a simple brk region, and potentially more stack space than requested at load time. Any searches of the vma chain may well fail looking for stack (and especially arg) addresses if the remaping is not done. The simplest example is /proc/<pid>/cmdline, since the args are pretty much always at the top of the data/bss/stack region. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-09[PATCH] v9fs_vfs_mkdir(): fix a double freeAdrian Bunk1-5/+2
Fix a double free of "dfid" introduced by commit da977b2c7eb4d6312f063a7b486f2aad99809710 and spotted by the Coverity checker. Signed-off-by: Adrian Bunk <bunk@stusta.de> Cc: Eric Van Hensbergen <ericvh@gmail.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-09[PATCH] hugetlb: preserve hugetlb pte dirty stateKen Chen1-1/+4
__unmap_hugepage_range() is buggy that it does not preserve dirty state of huge_pte when unmapping hugepage range. It causes data corruption in the event of dop_caches being used by sys admin. For example, an application creates a hugetlb file, modify pages, then unmap it. While leaving the hugetlb file alive, comes along sys admin doing a "echo 3 > /proc/sys/vm/drop_caches". drop_pagecache_sb() will happily free all pages that aren't marked dirty if there are no active mapping. Later when application remaps the hugetlb file back and all data are gone, triggering catastrophic flip over on application. Not only that, the internal resv_huge_pages count will also get all messed up. Fix it up by marking page dirty appropriately. Signed-off-by: Ken Chen <kenchen@google.com> Cc: "Nish Aravamudan" <nish.aravamudan@gmail.com> Cc: Adam Litke <agl@us.ibm.com> Cc: David Gibson <david@gibson.dropbear.id.au> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: <stable@kernel.org> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-09[PATCH] ufs: restore back support of openstepEvgeniy Dushistov2-10/+16
This is a fix of regression, which triggered by ~2.6.16. Patch with name ufs-directory-and-page-cache-from-blocks-to-pages.patch: in additional to conversation from block to page cache mechanism added new checks of directory integrity, one of them that directory entry do not across directory chunks. But some kinds of UFS: OpenStep UFS and Apple UFS (looks like these are the same filesystems) have different directory chunk size, then common UFSes(BSD and Solaris UFS). So this patch adds ability to works with variable size of directory chunks, and set it for ufstype=openstep to right size. Tested on darwin ufs. Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-09[PATCH] dlm: use kern_recvmsg()Al Viro1-17/+6
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-08Merge branch 'HEAD' of ↵David S. Miller2-4/+1
master.kernel.org:/pub/scm/linux/kernel/git/herbert/crypto-2.6 Conflicts: crypto/Kconfig
2007-02-08Merge branch 'upstream-linus' of ↵Linus Torvalds17-468/+1211
master.kernel.org:/pub/scm/linux/kernel/git/mfasheh/ocfs2 * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/mfasheh/ocfs2: (22 commits) configfs: Zero terminate data in configfs attribute writes. [PATCH] ocfs2 heartbeat: clean up bio submission code ocfs2: introduce sc->sc_send_lock to protect outbound outbound messages [PATCH] ocfs2: drop INET from Kconfig, not needed ocfs2_dlm: Add timeout to dlm join domain ocfs2_dlm: Silence some messages during join domain ocfs2_dlm: disallow a domain join if node maps mismatch ocfs2_dlm: Ensure correct ordering of set/clear refmap bit on lockres ocfs2: Binds listener to the configured ip address ocfs2_dlm: Calling post handler function in assert master handler ocfs2: Added post handler callable function in o2net message handler ocfs2_dlm: Cookies in locks not being printed correctly in error messages ocfs2_dlm: Silence a failed convert ocfs2_dlm: wake up sleepers on the lockres waitqueue ocfs2_dlm: Dlm dispatch was stopping too early ocfs2_dlm: Drop inflight refmap even if no locks found on the lockres ocfs2_dlm: Flush dlm workqueue before starting to migrate ocfs2_dlm: Fix migrate lockres handler queue scanning ocfs2_dlm: Make dlmunlock() wait for migration to complete ocfs2_dlm: Fixes race between migrate and dirty ...
2007-02-07configfs: Zero terminate data in configfs attribute writes.Joel Becker1-3/+6
Attributes in configfs are text files. As such, most handlers expect to be able to call functions like simple_strtoul() without checking the bounds of the buffer. Change the call to zero terminate the buffer before calling the client's ->store() method. This does reduce the attribute size from PAGE_SIZE to PAGE_SIZE-1. Also, change get_zeroed_page() to alloc_page(), as we are handling the termination. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07[PATCH] ocfs2 heartbeat: clean up bio submission codePhilipp Reisner1-127/+31
As was already pointed out Mathieu Avila on Thu, 07 Sep 2006 03:15:25 -0700 that OCFS2 is expecting bio_add_page() to add pages to BIOs in an easily predictable manner. That is not true, especially for devices with own merge_bvec_fn(). Therefore OCFS2's heartbeat code is very likely to fail on such devices. Move the bio_put() call into the bio's bi_end_io() function. This makes the whole idea of trying to predict the behaviour of bio_add_page() unnecessary. Removed compute_max_sectors() and o2hb_compute_request_limits(). Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2: introduce sc->sc_send_lock to protect outbound outbound messagesZhen Wei2-0/+10
When there is a lot of multithreaded I/O usage, two threads can collide while sending out a message to the other nodes. This is due to the lack of locking between threads while sending out the messages. When a connected TCP send(), sendto(), or sendmsg() arrives in the Linux kernel, it eventually comes through tcp_sendmsg(). tcp_sendmsg() protects itself by acquiring a lock at invocation by calling lock_sock(). tcp_sendmsg() then loops over the buffers in the iovec, allocating associated sk_buff's and cache pages for use in the actual send. As it does so, it pushes the data out to tcp for actual transmission. However, if one of those allocation fails (because a large number of large sends is being processed, for example), it must wait for memory to become available. It does so by jumping to wait_for_sndbuf or wait_for_memory, both of which eventually cause a call to sk_stream_wait_memory(). sk_stream_wait_memory() contains a code path that calls sk_wait_event(). Finally, sk_wait_event() contains the call to release_sock(). The following patch adds a lock to the socket container in order to properly serialize outbound requests. From: Zhen Wei <zwei@novell.com> Acked-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07[PATCH] ocfs2: drop INET from Kconfig, not neededRandy Dunlap1-1/+0
OCFS2: drop 'depends on INET' since local mounts are now allowed. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2_dlm: Add timeout to dlm join domainSunil Mushran1-1/+13
Currently the ocfs2 dlm has no timeout during dlm join domain. While this is not a problem in normal operation, this does become an issue if, say, the other node is refusing to let the node join the domain because of a stuck recovery. This patch adds a 90 sec timeout. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2_dlm: Silence some messages during join domainSunil Mushran1-3/+6
These messages can easily be activated using the mlog infrastructure and don't need to be enabled by default. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2_dlm: disallow a domain join if node maps mismatchSrinivas Eeda3-1/+62
There is a small window where a joining node may not see the node(s) that just died but are still part of the domain. To fix this, we must disallow join requests if the joining node has a different node map. A new field node_map is added to dlm_query_join_request to send the current nodes nodemap along with join request. On the receiving end the nodes that are part of the cluster verifies if this new node sees all the nodes that are still part of the cluster. They disallow the join if the maps mismatch. Signed-off-by: Srinivas Eeda <srinivas.eeda@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2_dlm: Ensure correct ordering of set/clear refmap bit on lockresSunil Mushran2-11/+94
Eventhough the set refmap bit message is sent before the clear refmap message, currently there is no guarentee that the set message will be handled before the clear. This patch prevents the clear refmap to be processed while the node is sending assert master messages to other nodes. (The set refmap message is sent as a response to the assert master request). Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2: Binds listener to the configured ip addressSunil Mushran1-7/+8
This patch binds the o2net listener to the configured ip address instead of INADDR_ANY for security. Fixes oss.oracle.com bugzilla#814. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2_dlm: Calling post handler function in assert master handlerKurt Hackel4-4/+29
This patch prevents the dlm from sending the clear refmap message before the set refmap. We use the newly created post function handler routine to accomplish the task. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2: Added post handler callable function in o2net message handlerKurt Hackel12-60/+112
Currently o2net allows one handler function per message type. This patch adds the ability to call another function to be called after the handler has returned the message to the other node. Handlers are now given the option of returning a context (in the form of a void **) which will be passed back into the post message handler function. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2_dlm: Cookies in locks not being printed correctly in error messagesKurt Hackel5-25/+26
The dlm encodes the node number and a sequence number in the lock cookie. It also stores the cookie in the lockres in the big endian format to avoid swapping 8 bytes on each lock request. The bug here was that it was assuming the cookie to be in the cpu format when decoding it for printing the error message. This patch swaps the bytes before the print. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2_dlm: Silence a failed convertKurt Hackel1-22/+6
When the lockres is in migrate or recovery state, all convert requests are denied with the appropriate error status that is handled on the requester node. This patch silences the erroneous error message printed on the master node. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2_dlm: wake up sleepers on the lockres waitqueueKurt Hackel3-2/+18
The dlm was not waking up threads waiting on the lockres wait queue, waiting for the lockres to be no longer be in the DLM_LOCK_RES_IN_PROGRESS and the DLM_LOCK_RES_MIGRATING states. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2_dlm: Dlm dispatch was stopping too earlyKurt Hackel1-3/+0
dlm_dispatch_work was not processing the queued up tasks at the first sign of the node leaving the domain leading to not only incompleted tasks but also a mismatch in the dlm refcnt. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2_dlm: Drop inflight refmap even if no locks found on the lockresKurt Hackel1-5/+3
Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2_dlm: Flush dlm workqueue before starting to migrateKurt Hackel1-16/+20
This is to prevent the condition in which a previously queued up assert master asserts after we start the migration. Now migration ensures the workqueue is flushed before proceeding with migrating the lock to another node. This condition is typically encountered during parallel umounts. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2_dlm: Fix migrate lockres handler queue scanningKurt Hackel1-6/+20
The migrate lockres handler was only searching for its lock on migrated lockres on the expected queue. This could be problematic as the new master could have also issued a convert request during the migration and thus moved the lock to the convert queue. We now search for the lock on all three queues. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <Sunil.Mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2_dlm: Make dlmunlock() wait for migration to completeKurt Hackel2-0/+5
dlmunlock() was not waiting for migration to complete before releasing locks on locally mastered locks. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <Sunil.Mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2_dlm: Fixes race between migrate and dirtyKurt Hackel3-14/+33
dlmthread was removing lockres' from the dirty list and resetting the dirty flag before shuffling the list. This patch retains the dirty state flag until the lists are shuffled. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <Sunil.Mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07[PATCH] fs/ocfs2/dlm/: make functions staticAdrian Bunk3-10/+7
This patch makes some needlessly global functions static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2_dlm: fix cluster-wide refcounting of lock resourcesKurt Hackel8-174/+729
This was previously broken and migration of some locks had to be temporarily disabled. We use a new (and backward-incompatible) set of network messages to account for all references to a lock resources held across the cluster. once these are all freed, the master node may then free the lock resource memory once its local references are dropped. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07sysfs: Shadow directory supportEric W. Biederman5-36/+189
The problem. When implementing a network namespace I need to be able to have multiple network devices with the same name. Currently this is a problem for /sys/class/net/*. What I want is a separate /sys/class/net directory in sysfs for each network namespace, and I want to name each of them /sys/class/net. I looked and the VFS actually allows that. All that is needed is for /sys/class/net to implement a follow link method to redirect lookups to the real directory you want. Implementing a follow link method that is sensitive to the current network namespace turns out to be 3 lines of code so it looks like a clean approach. Modifying sysfs so it doesn't get in my was is a bit trickier. I am calling the concept of multiple directories all at the same path in the filesystem shadow directories. With the directory entry really at that location the shadow master. The following patch modifies sysfs so it can handle a directory structure slightly different from the kobject tree so I can implement the shadow directories for handling /sys/class/net/. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Maneesh Soni <maneesh@in.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-07sysfs: error handling in sysfs, fill_read_buffer()Oliver Neukum1-4/+6
if a driver returns an error in fill_read_buffer(), the buffer will be marked as filled. Subsequent reads will return eof. But there is no data because of an error, not because it has been read. Not marking the buffer filled is the obvious fix. Signed-off-by: Oliver Neukum <oliver@neukum.name> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-07sysfs: kobject_put cleanupMariusz Kozlowski2-6/+4
This patch removes redundant argument checks for kobject_put(). Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-07sysfs: suppress lockdep warningsFrederik Deweerdt1-2/+2
Lockdep issues the following warning: [ 9.064000] ============================================= [ 9.064000] [ INFO: possible recursive locking detected ] [ 9.064000] 2.6.20-rc3-mm1 #3 [ 9.064000] --------------------------------------------- [ 9.064000] init/1 is trying to acquire lock: [ 9.064000] (&sysfs_inode_imutex_key){--..}, at: [<c03e6afc>] mutex_lock+0x1c/0x1f [ 9.064000] [ 9.064000] but task is already holding lock: [ 9.064000] (&sysfs_inode_imutex_key){--..}, at: [<c03e6afc>] mutex_lock+0x1c/0x1f [ 9.065000] [ 9.065000] other info that might help us debug this: [ 9.065000] 2 locks held by init/1: [ 9.065000] #0: (tty_mutex){--..}, at: [<c03e6afc>] mutex_lock+0x1c/0x1f [ 9.065000] #1: (&sysfs_inode_imutex_key){--..}, at: [<c03e6afc>] mutex_lock+0x1c/0x1f [ 9.065000] [ 9.065000] stack backtrace: [ 9.065000] [<c010390d>] show_trace_log_lvl+0x1a/0x30 [ 9.066000] [<c0103935>] show_trace+0x12/0x14 [ 9.066000] [<c0103a2f>] dump_stack+0x16/0x18 [ 9.066000] [<c0138cb8>] print_deadlock_bug+0xb9/0xc3 [ 9.066000] [<c0138d17>] check_deadlock+0x55/0x5a [ 9.066000] [<c013a953>] __lock_acquire+0x371/0xbf0 [ 9.066000] [<c013b7a9>] lock_acquire+0x69/0x83 [ 9.066000] [<c03e6b7e>] __mutex_lock_slowpath+0x75/0x2d1 [ 9.066000] [<c03e6afc>] mutex_lock+0x1c/0x1f [ 9.066000] [<c01b249c>] sysfs_drop_dentry+0xb1/0x133 [ 9.066000] [<c01b25d1>] sysfs_hash_and_remove+0xb3/0x142 [ 9.066000] [<c01b30ed>] sysfs_remove_file+0xd/0x10 [ 9.067000] [<c02849e0>] device_remove_file+0x23/0x2e [ 9.067000] [<c02850b2>] device_del+0x188/0x1e6 [ 9.067000] [<c028511b>] device_unregister+0xb/0x15 [ 9.067000] [<c0285318>] device_destroy+0x9c/0xa9 [ 9.067000] [<c0261431>] vcs_remove_sysfs+0x1c/0x3b [ 9.067000] [<c0267a08>] con_close+0x5e/0x6b [ 9.067000] [<c02598f2>] release_dev+0x4c4/0x6e5 [ 9.067000] [<c0259faa>] tty_release+0x12/0x1c [ 9.067000] [<c0174872>] __fput+0x177/0x1a0 [ 9.067000] [<c01746f5>] fput+0x3b/0x41 [ 9.068000] [<c0172ee1>] filp_close+0x36/0x65 [ 9.068000] [<c0172f73>] sys_close+0x63/0xa4 [ 9.068000] [<c0102a96>] sysenter_past_esp+0x5f/0x99 [ 9.068000] ======================= This is due to sysfs_hash_and_remove() holding dir->d_inode->i_mutex before calling sysfs_drop_dentry() which calls orphan_all_buffers() which in turn takes node->i_mutex. Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com> Cc: Oliver Neukum <oliver@neukum.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-07Driver core: fix race in sysfs between sysfs_remove_file() and read()/write()Oliver Neukum8-17/+103
This patch prevents a race between IO and removing a file from sysfs. It introduces a list of sysfs_buffers associated with a file at the inode. Upon removal of a file the list is walked and the buffers marked orphaned. IO to orphaned buffers fails with -ENODEV. The driver can safely free associated data structures or be unloaded. Signed-off-by: Oliver Neukum <oliver@neukum.name> Acked-by: Maneesh Soni <maneesh@in.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-07driver core: Allow device_move(dev, NULL).Cornelia Huck1-4/+2
If we allow NULL as the new parent in device_move(), we need to make sure that the device is placed into the same place as it would if it was newly registered: - Consider the device virtual tree. In order to be able to reuse code, setup_parent() has been tweaked a bit. - kobject_move() can fall back to the kset's kobject. - sysfs_move_dir() uses the sysfs root dir as fallback. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-07Merge branch 'for-linus' of ↵Linus Torvalds10-49/+92
git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6: JFS: Remove incorrect kgdb define JFS: call io_schedule() instead of schedule() to avoid deadlock JFS: Add lockdep annotations JFS: Avoid BUG() on a damaged file system
2007-02-07Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmwLinus Torvalds39-1119/+866
* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw: (57 commits) [GFS2] make gfs2_writepages() static [GFS2] Unlock page on prepare_write try lock failure [GFS2] nfsd readdirplus assertion failure [DLM] fix softlockup in dlm_recv [DLM] zero new user lvbs [DLM/GFS2] indent help text [GFS2] Fix unlink deadlocks [GFS2] Put back semaphore to avoid umount problem [GFS2] more CURRENT_TIME_SEC [GFS2/DLM] fix GFS2 circular dependency [GFS2/DLM] use sysfs [GFS2] make lock_dlm drop_count tunable in sysfs [GFS2] increase default lock limit [GFS2] Fix list corruption in lops.c [GFS2] Fix recursive locking attempt with NFS [DLM] can miss clearing resend flag [DLM] saved dlm message can be dropped [DLM] Make sock_sem into a mutex [GFS2] Fix typo in glock.c [GFS2] use CURRENT_TIME_SEC instead of get_seconds in gfs2 ...
2007-02-07[GFS2] make gfs2_writepages() staticAdrian Bunk1-1/+2
On Mon, Jan 29, 2007 at 08:45:28PM -0800, Andrew Morton wrote: >... > Changes since 2.6.20-rc6-mm2: >... > git-gfs2-nmw.patch >... > git trees >... This patch makes the needlessly global gfs2_writepages() static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2007-02-07[GFS2] Unlock page on prepare_write try lock failureSteven Whitehouse1-1/+3
When the try lock of the glock failed in prepare_write we were incorrectly exiting this function with the page still locked. This was resulting in further I/O to this page hanging. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2007-02-06Merge branch 'upstream-linus' of ↵Linus Torvalds1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2 * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2: ocfs2: ocfs2_link() journal credits update
2007-02-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds5-8/+32
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: [CIFS] Minor cleanup [CIFS] Missing free in error path [CIFS] Reduce cifs stack space usage [CIFS] lseek polling returned stale EOF
2007-02-07[CRYPTO] api: Remove deprecated interfaceHerbert Xu2-4/+1
This patch removes the old cipher interface and related code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2007-02-06[CIFS] Minor cleanupSteve French2-3/+5
Missing tab. Missing entry in changelog Signed-off-by: Steve French <sfrench@us.ibm.com>
2007-02-06[GFS2] nfsd readdirplus assertion failureWendy Cheng1-5/+11
Glock assertion failure found in '07 NFS connectathon. One of the NFSDs is doing a "readdirplus" procedure call. It passes the logic into gfs2_readdir() where it obtains its directory inode glock. This is then followed by filehandle construction that invokes lookup code. It hits the assertion failure while trying to obtain the inode glock again inside gfs2_drevalidate(). This patch bypasses the recursive glock call if caller already holds the lock. Signed-off-by: S. Wendy Cheng <wcheng@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2007-02-05[DLM] fix softlockup in dlm_recvPatrick Caulfield1-6/+9
This patch stops the dlm_recv workqueue from busy-waiting when a node disconnects. This can cause soft lockup errors on debug systems and bad performance generally. Signed-Off-By: Patrick Caulfield <pcaulfie@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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