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2009-12-23ext4, jbd2: Add barriers for file systems with exernal journalsTheodore Ts'o
This is a bit complicated because we are trying to optimize when we send barriers to the fs data disk. We could just throw in an extra barrier to the data disk whenever we send a barrier to the journal disk, but that's not always strictly necessary. We only need to send a barrier during a commit when there are data blocks which are must be written out due to an inode written in ordered mode, or if fsync() depends on the commit to force data blocks to disk. Finally, before we drop transactions from the beginning of the journal during a checkpoint operation, we need to guarantee that any blocks that were flushed out to the data disk are firmly on the rust platter before we drop the transaction from the journal. Thanks to Oleg Drokin for pointing out this flaw in ext3/ext4. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-12-22jfs: Fix 32bit build warningAlan Cox
loff_t is a type that isn't entirely dependant upon 32 v 64bit choice Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-12-22Sanitize f_flags helpersAl Viro
* pull ACC_MODE to fs.h; we have several copies all over the place * nightmarish expression calculating f_mode by f_flags deserves a helper too (OPEN_FMODE(flags)) Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-12-22Fix f_flags/f_mode in case of lookup_instantiate_filp() from open(pathname, 3)Al Viro
Just set f_flags when shoving struct file into nameidata; don't postpone that until __dentry_open(). do_filp_open() has correct value; lookup_instantiate_filp() doesn't - we lose the difference between O_RDWR and 3 by that point. We still set .intent.open.flags, so no fs code needs to be changed. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-12-22anonfd: Allow making anon files read-onlyRoland Dreier
It seems a couple places such as arch/ia64/kernel/perfmon.c and drivers/infiniband/core/uverbs_main.c could use anon_inode_getfile() instead of a private pseudo-fs + alloc_file(), if only there were a way to get a read-only file. So provide this by having anon_inode_getfile() create a read-only file if we pass O_RDONLY in flags. Signed-off-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-12-22fs/compat_ioctl.c: fix build error when !BLOCKArnd Bergmann
No driver uses SG_SET_TRANSFORM any more in Linux, since the ide-scsi driver was removed in 2.6.29. The compat-ioctl cleanup series moved the handling for this around, which broke building without CONFIG_BLOCK. Just remove the code handling it for compat mode. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-12-22alloc_file(): simplify handling of mnt_clone_write() errorsRoland Dreier
When alloc_file() and init_file() were combined, the error handling of mnt_clone_write() was taken into alloc_file() in a somewhat obfuscated way. Since we don't use the error code for anything except warning, we might as well warn directly without an extra variable. Signed-off-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-12-21ceph: fix incremental osdmap pg_temp decoding bugSage Weil
An incremental pg_temp wasn't being decoded properly (wrong bound on for loop). Also remove unused local variable, while we're at it. Signed-off-by: Sage Weil <sage@newdream.net>
2009-12-21ceph: fix error paths for corrupt osdmap messagesSage Weil
Both osdmap_decode() and osdmap_apply_incremental() should never return NULL. Signed-off-by: Sage Weil <sage@newdream.net>
2009-12-21ceph: do not drop lease during revalidateSage Weil
We need to hold session s_mutex for __ceph_mdsc_drop_dentry_lease(), which we don't, so skip it. It was purely an optimization. Signed-off-by: Sage Weil <sage@newdream.net>
2009-12-21ceph: ensure rename target dentry fails revalidationSage Weil
This works around a bug in vfs_rename_dir() that rehashes the target dentry. Ensure such dentries always fail revalidation by timing out the dentry lease and kicking it out of the current directory lease gen. This can be reverted when the vfs bug is fixed. Signed-off-by: Sage Weil <sage@newdream.net>
2009-12-21ceph: writeback congestion controlYehuda Sadeh
Set bdi congestion bit when amount of write data in flight exceeds adjustable threshold. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
2009-12-21ceph: writepage grabs and releases inodeYehuda Sadeh
Fixes a deadlock that is triggered due to kswapd, while the page was locked and the iput couldn't tear down the address space. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
2009-12-21ceph: remove unaccessible codeYehuda Sadeh
Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
2009-12-21ceph: include link to bdi in debugfsSage Weil
Signed-off-by: Sage Weil <sage@newdream.net>
2009-12-21ceph: make mds ops interruptibleSage Weil
Signed-off-by: Sage Weil <sage@newdream.net>
2009-12-21ceph: plug leak of incoming message during connection fault/closeSage Weil
If we explicitly close a connection, or there is a socket error, we need to drop any partially received message. Signed-off-by: Sage Weil <sage@newdream.net>
2009-12-21ceph: hex dump corrupt server data to KERN_DEBUGSage Weil
Also, print fsid using standard format, NOT hex dump. Signed-off-by: Sage Weil <sage@newdream.net>
2009-12-21ceph: fix msgpool reservation leakYehuda Sadeh
Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
2009-12-21ceph: don't save sent messages on lossy connectionsSage Weil
For lossy connections we drop all state on socket errors, so there is no reason to keep sent ceph_msg's around. Signed-off-by: Sage Weil <sage@newdream.net>
2009-12-21ceph: detect lossy state of connectionSage Weil
The server indicates whether a connection is lossy; set our LOSSYTX bit appropriately. Do not set lossy bit on outgoing connections. Signed-off-by: Sage Weil <sage@newdream.net>
2009-12-21ceph: plug msg leak in con_faultSage Weil
Signed-off-by: Sage Weil <sage@newdream.net>
2009-12-21ceph: carry explicit msg reference for currently sending messageSage Weil
Carry a ceph_msg reference for connection->out_msg. This will allow us to make out_sent optional. Signed-off-by: Sage Weil <sage@newdream.net>
2009-12-20nfsd: fix "insecure" export optionJ. Bruce Fields
A typo in 12045a6ee9908b "nfsd: let "insecure" flag vary by pseudoflavor" reversed the sense of the "insecure" flag. Reported-by: Michael Guntsche <mike@it-loops.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-20nfsd: fix "insecure" export optionJ. Bruce Fields
A typo in 12045a6ee9908b "nfsd: let "insecure" flag vary by pseudoflavor" reversed the sense of the "insecure" flag. Reported-by: Michael Guntsche <mike@it-loops.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-12-19Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (25 commits) sched: Fix broken assertion sched: Assert task state bits at build time sched: Update task_state_arraypwith new states sched: Add missing state chars to TASK_STATE_TO_CHAR_STR sched: Move TASK_STATE_TO_CHAR_STR near the TASK_state bits sched: Teach might_sleep() about preemptible RCU sched: Make warning less noisy sched: Simplify set_task_cpu() sched: Remove the cfs_rq dependency from set_task_cpu() sched: Add pre and post wakeup hooks sched: Move kthread_bind() back to kthread.c sched: Fix select_task_rq() vs hotplug issues sched: Fix sched_exec() balancing sched: Ensure set_task_cpu() is never called on blocked tasks sched: Use TASK_WAKING for fork wakups sched: Select_task_rq_fair() must honour SD_LOAD_BALANCE sched: Fix task_hot() test order sched: Fix set_cpu_active() in cpu_down() sched: Mark boot-cpu active before smp_init() sched: Fix cpu_clock() in NMIs, on !CONFIG_HAVE_UNSTABLE_SCHED_CLOCK ...
2009-12-18ocfs2: Set i_nlink properly during reflink.Tao Ma
We create a file in orphan dir for reflink so that if there is any error, we don't create any wrong dentry in the dir. But actually the file in orphan dir should be i_nlink = 0 so that it can be replayed and freed successfully. This patch first set i_nlink to 0 when creating the file in orphan dir and then set it to 1(reflink now only works for regular file) when we move it to the dest dir. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
2009-12-18ocfs2: Add reflinked file's inode to inode hash eariler.Tao Ma
We used to add reflinked file's inode to inode hash when we add it to the dest dir. But actually there is a race. Consider the following sequence. 1. reflink happens and create the inode in orphan dir. 2. reflink thread is scheduled out because of some io. 3. recovery begins to work and calls ocfs2_recover_orphans. It calls ocfs2_iget and get a new inode and i_count = 1. It calls iput then and delete inode. the buffer's uptodate state is cleared. This patch move insert_inode_hash to the create function so that it can be found by step 3 and prevented from deleting because i_count > 1. This resolves the bug http://oss.oracle.com/bugzilla/show_bug.cgi?id=1183. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
2009-12-17Ocfs2: Should ocfs2 support fiemap for S_IFDIR inode?Tristan Ye
Let userspace have a chance to get the extent info of a directory just like extN did. Signed-off-by: Tristan Ye <tristan.ye@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
2009-12-17ocfs2: Use FIEMAP_EXTENT_SHAREDSunil Mushran
Adds FIEMAP_EXTENT_SHARED flag to refcounted extents. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Acked-by: Mark Fasheh <mfasheh@suse.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
2009-12-17ocfs2: replace u8 by __u8 in ocfs2_fs.hColy Li
This patch replaces date type 'u8' with '__u8', which follows the coding style of ocfs2_fs.h, and portable to user space for ocfs2-tools. Signed-off-by: Coly Li <coly.li@suse.de> Signed-off-by: Joel Becker <joel.becker@oracle.com>
2009-12-17ocfs2: explicit declare uninitialized var in user_cluster_connect()Coly Li
This patch explicitly declares an uninitialized local variable in user_cluster_connect(), to remove a compiling warning. Signed-off-by: Coly Li <coly.li@suse.de> Signed-off-by: Joel Becker <joel.becker@oracle.com>
2009-12-17Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: Btrfs: make sure fallocate properly starts a transaction Btrfs: make metadata chunks smaller Btrfs: Show discard option in /proc/mounts Btrfs: deny sys_link across subvolumes. Btrfs: fail mount on bad mount options Btrfs: don't add extent 0 to the free space cache v2 Btrfs: Fix per root used space accounting Btrfs: Fix btrfs_drop_extent_cache for skip pinned case Btrfs: Add delayed iput Btrfs: Pass transaction handle to security and ACL initialization functions Btrfs: Make truncate(2) more ENOSPC friendly Btrfs: Make fallocate(2) more ENOSPC friendly Btrfs: Avoid orphan inodes cleanup during committing transaction Btrfs: Avoid orphan inodes cleanup while replaying log Btrfs: Fix disk_i_size update corner case Btrfs: Rewrite btrfs_drop_extents Btrfs: Add btrfs_duplicate_item Btrfs: Avoid superfluous tree-log writeout
2009-12-17mm: introduce coredump parameter structureMasami Hiramatsu
Introduce coredump parameter data structure (struct coredump_params) to simplify binfmt->core_dump() arguments. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Suggested-by: Ingo Molnar <mingo@elte.hu> Cc: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Roland McGrath <roland@redhat.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-17do_wait() optimization: do not place sub-threads on task_struct->children listOleg Nesterov
Thanks to Roland who pointed out de_thread() issues. Currently we add sub-threads to ->real_parent->children list. This buys nothing but slows down do_wait(). With this patch ->children contains only main threads (group leaders). The only complication is that forget_original_parent() should iterate over sub-threads by hand, and de_thread() needs another list_replace() when it changes ->group_leader. Henceforth do_wait_thread() can never see task_detached() && !EXIT_DEAD tasks, we can remove this check (and we can unify do_wait_thread() and ptrace_do_wait()). This change can confuse the optimistic search in mm_update_next_owner(), but this is fixable and minor. Perhaps badness() and oom_kill_process() should be updated, but they should be fixed in any case. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: Roland McGrath <roland@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Ratan Nalumasu <rnalumasu@gmail.com> Cc: Vitaly Mayatskikh <vmayatsk@redhat.com> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-17nommu: ramfs: remove unused local varMike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: David Howells <dhowells@redhat.com> Acked-by: Greg Ungerer <gerg@snapgear.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-17reiserfs: truncate blocks not used by a writeJan Kara
It can happen that write does not use all the blocks allocated in write_begin either because of some filesystem error (like ENOSPC) or because page with data to write has been removed from memory. We truncate these blocks so that we don't have dangling blocks beyond i_size. Cc: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-17Revert "task_struct: make journal_info conditional"Linus Torvalds
This reverts commit e4c570c4cb7a95dbfafa3d016d2739bf3fdfe319, as requested by Alexey: "I think I gave a good enough arguments to not merge it. To iterate: * patch makes impossible to start using ext3 on EXT3_FS=n kernels without reboot. * this is done only for one pointer on task_struct" None of config options which define task_struct are tristate directly or effectively." Requested-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-17Merge branch 'master' of ↵Chris Mason
ssh://master.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable into for-linus
2009-12-17Revert "fix mismerge with Trond's stuff (create_mnt_ns() export is gone now)"Linus Torvalds
This reverts commit e9496ff46a20a8592fdc7bdaaf41b45eb808d310. Quoth Al: "it's dependent on a lot of other stuff not currently in mainline and badly broken with current fs/namespace.c. Sorry, badly out-of-order cherry-pick from old queue. PS: there's a large pending series reworking the refcounting and lifetime rules for vfsmounts that will, among other things, allow to rip a subtree away _without_ dissolving connections in it, to be garbage-collected when all active references are gone. It's considerably saner wrt "is the subtree busy" logics, but it's nowhere near being ready for merge at the moment; this changeset is one of the things becoming possible with that sucker, but it certainly shouldn't have been picked during this cycle. My apologies..." Noticed-by: Eric Paris <eparis@redhat.com> Requested-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-17Btrfs: make sure fallocate properly starts a transactionChris Mason
The recent patch to make fallocate enospc friendly would send down a NULL trans handle to the allocator. This moves the transaction start to properly fix things. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2009-12-17Merge branch btrfs-master into for-linusChris Mason
Conflicts: fs/btrfs/acl.c
2009-12-17Btrfs: make metadata chunks smallerJosef Bacik
This patch makes us a bit less zealous about making sure we have enough free metadata space by pearing down the size of new metadata chunks to 256mb instead of 1gb. Also, we used to try an allocate metadata chunks when allocating data, but that sort of thing is done elsewhere now so we can just remove it. With my -ENOSPC test I used to have 3gb reserved for metadata out of 75gb, now I have 1.7gb. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2009-12-17Btrfs: Show discard option in /proc/mountsMatthew Wilcox
Christoph's patch e244a0aeb6a599c19a7c802cda6e2d67c847b154 doesn't display the discard option in /proc/mounts, leading to some confusion for me. Here's the missing bit. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2009-12-17Btrfs: deny sys_link across subvolumes.TARUISI Hiroaki
I rebased Christian Parpart's patch to deny hard link across subvolumes. Original patch modifies also btrfs_rename, but I excluded it because we can move across subvolumes now and it make no problem. ----------------- Hard link across subvolumes should not allowed in Btrfs. btrfs_link checks root of 'to' directory is same as root of 'from' file. If not same, btrfs_link returns -EPERM. Signed-off-by: TARUISI Hiroaki <taruishi.hiroak@jp.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2009-12-17Btrfs: fail mount on bad mount optionsSage Weil
We shouldn't silently ignore unrecognized options. Signed-off-by: Sage Weil <sage@newdream.net> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2009-12-17Btrfs: don't add extent 0 to the free space cache v2Yan, Zheng
If block group 0 is completely free, btrfs_read_block_groups will add extent [0, BTRFS_SUPER_INFO_OFFSET) to the free space cache. Signed-off-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2009-12-17Btrfs: Fix per root used space accountingYan, Zheng
The bytes_used field in root item was originally planned to trace the amount of used data and tree blocks. But it never worked right since we can't trace freeing of data accurately. This patch changes it to only trace the amount of tree blocks. Signed-off-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2009-12-17Btrfs: Fix btrfs_drop_extent_cache for skip pinned caseYan, Zheng
The check for skip pinned case is wrong, it may breaks the while loop too soon. Signed-off-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2009-12-17Btrfs: Add delayed iputYan, Zheng
iput() can trigger new transactions if we are dropping the final reference, so calling it in btrfs_commit_transaction may end up deadlock. This patch adds delayed iput to avoid the issue. Signed-off-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>