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2010-03-06mm: clean up mm_counterKAMEZAWA Hiroyuki
Presently, per-mm statistics counter is defined by macro in sched.h This patch modifies it to - defined in mm.h as inlinf functions - use array instead of macro's name creation. This patch is for reducing patch size in future patch to modify implementation of per-mm counter. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Reviewed-by: Minchan Kim <minchan.kim@gmail.com> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: Lee Schermerhorn <lee.schermerhorn@hp.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>
2010-03-06infiniband: use for_each_set_bit()Akinobu Mita
Replace open-coded loop with for_each_set_bit(). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Roland Dreier <rolandd@cisco.com> Cc: Sean Hefty <sean.hefty@intel.com> Cc: Hal Rosenstock <hal.rosenstock@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-06bitops: rename for_each_bit() to for_each_set_bit()Akinobu Mita
Rename for_each_bit to for_each_set_bit in the kernel source tree. To permit for_each_clear_bit(), should that ever be added. The patch includes a macro to map the old for_each_bit() onto the new for_each_set_bit(). This is a (very) temporary thing to ease the migration. [akpm@linux-foundation.org: add temporary for_each_bit()] Suggested-by: Alexey Dobriyan <adobriyan@gmail.com> Suggested-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Russell King <rmk@arm.linux.org.uk> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Artem Bityutskiy <dedekind@infradead.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-06timbgpio: fix buildDavid Miller
Use of get_irq_chip_data() et al. requires including linux/irq.h Signed-off-by: David S. Miller <davem@davemloft.net> Cc: Richard Röjfors <richard.rojfors@pelagicore.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-06Fix a dumb typo - use of & instead of &&Al Viro
We managed to lose O_DIRECTORY testing due to a stupid typo in commit 1f36f774b2 ("Switch !O_CREAT case to use of do_last()") Reported-by: Walter Sheets <w41ter@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-05Merge branch 'slab-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6 * 'slab-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6: SLUB: Fix per-cpu merge conflict failslab: add ability to filter slab caches slab: fix regression in touched logic dma kmalloc handling fixes slub: remove impossible condition slab: initialize unused alien cache entry as NULL at alloc_alien_cache(). SLUB: Make slub statistics use this_cpu_inc SLUB: this_cpu: Remove slub kmem_cache fields SLUB: Get rid of dynamic DMA kmalloc cache allocation SLUB: Use this_cpu operations in slub
2010-03-05Merge branch 'nfs-for-2.6.34' of ↵Linus Torvalds
git://git.linux-nfs.org/projects/trondmy/nfs-2.6 * 'nfs-for-2.6.34' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: (44 commits) NFS: Remove requirement for inode->i_mutex from nfs_invalidate_mapping NFS: Clean up nfs_sync_mapping NFS: Simplify nfs_wb_page() NFS: Replace __nfs_write_mapping with sync_inode() NFS: Simplify nfs_wb_page_cancel() NFS: Ensure inode is always marked I_DIRTY_DATASYNC, if it has unstable pages NFS: Run COMMIT as an asynchronous RPC call when wbc->for_background is set NFS: Reduce the number of unnecessary COMMIT calls NFS: Add a count of the number of unstable writes carried by an inode NFS: Cleanup - move nfs_write_inode() into fs/nfs/write.c nfs41 fix NFS4ERR_CLID_INUSE for exchange id NFS: Fix an allocation-under-spinlock bug SUNRPC: Handle EINVAL error returns from the TCP connect operation NFSv4.1: Various fixes to the sequence flag error handling nfs4: renewd renew operations should take/put a client reference nfs41: renewd sequence operations should take/put client reference nfs: prevent backlogging of renewd requests nfs: kill renewd before clearing client minor version NFS: Make close(2) asynchronous when closing NFS O_DIRECT files NFS: Improve NFS iostat byte count accuracy for writes ...
2010-03-05Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs: fs/9p: Add hardlink support to .u extension 9P2010.L handshake: .L protocol negotiation 9P2010.L handshake: Remove "dotu" variable 9P2010.L handshake: Add mount option 9P2010.L handshake: Add VFS flags net/9p: Handle mount errors correctly. net/9p: Remove MAX_9P_CHAN limit net/9p: Add multi channel support.
2010-03-05Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6: (33 commits) quota: stop using QUOTA_OK / NO_QUOTA dquot: cleanup dquot initialize routine dquot: move dquot initialization responsibility into the filesystem dquot: cleanup dquot drop routine dquot: move dquot drop responsibility into the filesystem dquot: cleanup dquot transfer routine dquot: move dquot transfer responsibility into the filesystem dquot: cleanup inode allocation / freeing routines dquot: cleanup space allocation / freeing routines ext3: add writepage sanity checks ext3: Truncate allocated blocks if direct IO write fails to update i_size quota: Properly invalidate caches even for filesystems with blocksize < pagesize quota: generalize quota transfer interface quota: sb_quota state flags cleanup jbd: Delay discarding buffers in journal_unmap_buffer ext3: quota_write cross block boundary behaviour quota: drop permission checks from xfs_fs_set_xstate/xfs_fs_set_xquota quota: split out compat_sys_quotactl support from quota.c quota: split out netlink notification support from quota.c quota: remove invalid optimization from quota_sync_all ... Fixed trivial conflicts in fs/namei.c and fs/ufs/inode.c
2010-03-05Merge branch 'kvm-updates/2.6.34' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
* 'kvm-updates/2.6.34' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (145 commits) KVM: x86: Add KVM_CAP_X86_ROBUST_SINGLESTEP KVM: VMX: Update instruction length on intercepted BP KVM: Fix emulate_sys[call, enter, exit]()'s fault handling KVM: Fix segment descriptor loading KVM: Fix load_guest_segment_descriptor() to inject page fault KVM: x86 emulator: Forbid modifying CS segment register by mov instruction KVM: Convert kvm->requests_lock to raw_spinlock_t KVM: Convert i8254/i8259 locks to raw_spinlocks KVM: x86 emulator: disallow opcode 82 in 64-bit mode KVM: x86 emulator: code style cleanup KVM: Plan obsolescence of kernel allocated slots, paravirt mmu KVM: x86 emulator: Add LOCK prefix validity checking KVM: x86 emulator: Check CPL level during privilege instruction emulation KVM: x86 emulator: Fix popf emulation KVM: x86 emulator: Check IOPL level during io instruction emulation KVM: x86 emulator: fix memory access during x86 emulation KVM: x86 emulator: Add Virtual-8086 mode of emulation KVM: x86 emulator: Add group9 instruction decoding KVM: x86 emulator: Add group8 instruction decoding KVM: do not store wqh in irqfd ... Trivial conflicts in Documentation/feature-removal-schedule.txt
2010-03-05fs/9p: Add hardlink support to .u extensionAneesh Kumar K.V
For regular file and directories we put the link count in th extension field in a tagged string format. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2010-03-059P2010.L handshake: .L protocol negotiationSripathi Kodi
This patch adds 9P2010.L protocol negotiation with the server Signed-off-by: Sripathi Kodi <sripathik@in.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2010-03-059P2010.L handshake: Remove "dotu" variableSripathi Kodi
Removes 'dotu' variable and make everything dependent on 'proto_version' field. Signed-off-by: Sripathi Kodi <sripathik@in.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2010-03-059P2010.L handshake: Add mount optionSripathi Kodi
Add new mount V9FS mount option to specify protocol version This patch adds a new mount option to specify protocol version. With this option it is possible to use "-o version=" switch to specify 9P protocol version to use. Valid options for version are: 9p2000 9p2000.u 9p2010.L Signed-off-by: Sripathi Kodi <sripathik@in.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2010-03-059P2010.L handshake: Add VFS flagsSripathi Kodi
Add 9P2000.u and 9P2010.L protocol flags to V9FS VFS This patch adds 9P2000.u and 9P2010.L protocol flags into V9FS VFS side code and removes the single flag used for 'extended'. Signed-off-by: Sripathi Kodi <sripathik@in.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2010-03-05net/9p: Handle mount errors correctly.Aneesh Kumar K.V
With this patch we have # mount -t 9p -o trans=virtio virtio2 /mnt/ # mount -t 9p -o trans=virtio virtio2 /mnt/ mount: virtio2 already mounted or /mnt/ busy mount: according to mtab, virtio2 is already mounted on /mnt # mount -t 9p -o trans=virtio virtio3 /mnt/ -o debug=0xfff mount: special device virtio3 does not exist Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2010-03-05net/9p: Remove MAX_9P_CHAN limitAneesh Kumar K.V
Use a list to track the channel instead of statically allocated array Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2010-03-05net/9p: Add multi channel support.Aneesh Kumar K.V
This is needed for supporting multiple mount points. We can find out the device names to be used with mount by checking /sys/devices/virtio-pci/virtio*/device file if the device file have value 9 then the specific virtio device can be used for mounting. ex: #cat /sys/devices/virtio-pci/virtio1/device 9 now we can mount using # mount -t 9p -o trans=virtio virtio1 /mnt/ Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
2010-03-05Merge branch 'writeback-for-2.6.34' into nfs-for-2.6.34Trond Myklebust
2010-03-05NFS: Remove requirement for inode->i_mutex from nfs_invalidate_mappingTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-03-05NFS: Clean up nfs_sync_mappingTrond Myklebust
Remove the redundant call to filemap_write_and_wait(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-03-05NFS: Simplify nfs_wb_page()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-03-05NFS: Replace __nfs_write_mapping with sync_inode()Trond Myklebust
Now that we have correct COMMIT semantics in writeback_single_inode, we can reduce and simplify nfs_wb_all(). Also replace nfs_wb_nocommit() with a call to filemap_write_and_wait(), which doesn't need to hold the inode->i_mutex. With that done, we can eliminate nfs_write_mapping() altogether. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-03-05NFS: Simplify nfs_wb_page_cancel()Trond Myklebust
In all cases we should be able to just remove the request and call cancel_dirty_page(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-03-05NFS: Ensure inode is always marked I_DIRTY_DATASYNC, if it has unstable pagesTrond Myklebust
Since nfs_scan_list() doesn't wait for locked pages, we have a race in which it is possible to end up with an inode that needs to send a COMMIT, but which does not have the I_DIRTY_DATASYNC flag set. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-03-05NFS: Run COMMIT as an asynchronous RPC call when wbc->for_background is setTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Wu Fengguang <fengguang.wu@intel.com>
2010-03-05NFS: Reduce the number of unnecessary COMMIT callsTrond Myklebust
If the caller is doing a non-blocking flush, and there are still writebacks pending on the wire, we can usually defer the COMMIT call until those writes are done. Also ensure that we honour the wbc->nonblocking flag. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-03-05NFS: Add a count of the number of unstable writes carried by an inodeTrond Myklebust
In order to know when we should do opportunistic commits of the unstable writes, when the VM is doing a background flush, we add a field to count the number of unstable writes. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-03-05NFS: Cleanup - move nfs_write_inode() into fs/nfs/write.cTrond Myklebust
The sole purpose of nfs_write_inode is to commit unstable writes, so move it into fs/nfs/write.c, and make nfs_commit_inode static. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-03-05Merge branch 'write_inode2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'write_inode2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: pass writeback_control to ->write_inode make sure data is on disk before calling ->write_inode
2010-03-05Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: Switch !O_CREAT case to use of do_last() Get rid of symlink body copying Finish pulling of -ESTALE handling to upper level in do_filp_open() Turn do_link spaghetty into a normal loop Unify exits in O_CREAT handling Kill is_link argument of do_last() Pull handling of LAST_BIND into do_last(), clean up ok: part in do_filp_open() Leave mangled flag only for setting nd.intent.open.flag Get rid of passing mangled flag to do_last() Don't pass mangled open_flag to finish_open() pull more into do_last() bail out with ELOOP earlier in do_link loop pull the common predecessors into do_last() postpone __putname() until after do_last() unroll do_last: loop in do_filp_open() Shift releasing nd->root from do_last() to its caller gut do_filp_open() a bit more (do_last separation) beginning to untangle do_filp_open()
2010-03-05x86: fix mtrr missing kernel-docRandy Dunlap
Fix missing kernel-doc notation in mtrr/main.c: Warning(arch/x86/kernel/cpu/mtrr/main.c:152): No description found for parameter 'info' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-05Merge branch 'perf-probes-for-linus-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-probes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Issue at least one memory barrier in stop_machine_text_poke() perf probe: Correct probe syntax on command line help perf probe: Add lazy line matching support perf probe: Show more lines after last line perf probe: Check function address range strictly in line finder perf probe: Use libdw callback routines perf probe: Use elfutils-libdw for analyzing debuginfo perf probe: Rename probe finder functions perf probe: Fix bugs in line range finder perf probe: Update perf probe document perf probe: Do not show --line option without dwarf support kprobes: Add documents of jump optimization kprobes/x86: Support kprobes jump optimization on x86 x86: Add text_poke_smp for SMP cross modifying code kprobes/x86: Cleanup save/restore registers kprobes/x86: Boost probes when reentering kprobes: Jump optimization sysctl interface kprobes: Introduce kprobes jump optimization kprobes: Introduce generic insn_slot framework kprobes/x86: Cleanup RELATIVEJUMP_INSTRUCTION to RELATIVEJUMP_OPCODE
2010-03-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: padata: Allocate the cpumask for the padata instance crypto: authenc - Move saved IV in front of the ablkcipher request crypto: hash - Fix handling of unaligned buffers crypto: authenc - Use correct ahash complete functions crypto: md5 - Set statesize
2010-03-05Merge branch 'for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (36 commits) ext4: fix up rb_root initializations to use RB_ROOT ext4: Code cleanup for EXT4_IOC_MOVE_EXT ioctl ext4: Fix the NULL reference in double_down_write_data_sem() ext4: Fix insertion point of extent in mext_insert_across_blocks() ext4: consolidate in_range() definitions ext4: cleanup to use ext4_grp_offs_to_block() ext4: cleanup to use ext4_group_first_block_no() ext4: Release page references acquired in ext4_da_block_invalidatepages ext4: Fix ext4_quota_write cross block boundary behaviour ext4: Convert BUG_ON checks to use ext4_error() instead ext4: Use direct_IO_no_locking in ext4 dio read ext4: use ext4_get_block_write in buffer write ext4: mechanical rename some of the direct I/O get_block's identifiers ext4: make "offset" consistent in ext4_check_dir_entry() ext4: Handle non empty on-disk orphan link ext4: explicitly remove inode from orphan list after failed direct io ext4: fix error handling in migrate ext4: deprecate obsoleted mount options ext4: Fix fencepost error in chosing choosing group vs file preallocation. jbd2: clean up an assertion in jbd2_journal_commit_transaction() ...
2010-03-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linusLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus: Squashfs: get rid of obsolete definition in header file Squashfs: get rid of obsolete variable in struct squashfs_sb_info Squashfs: add decompressor entries for lzma and lzo Squashfs: add a decompressor framework Squashfs: factor out remaining zlib dependencies into separate wrapper file Squashfs: move zlib decompression wrapper code into a separate file
2010-03-05pass writeback_control to ->write_inodeChristoph Hellwig
This gives the filesystem more information about the writeback that is happening. Trond requested this for the NFS unstable write handling, and other filesystems might benefit from this too by beeing able to distinguish between the different callers in more detail. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-03-05make sure data is on disk before calling ->write_inodeChristoph Hellwig
Similar to the fsync issue fixed a while ago in commit 2daea67e966dc0c42067ebea015ddac6834cef88 we need to write for data to actually hit the disk before writing out the metadata to guarantee data integrity for filesystems that modify the inode in the data I/O completion path. Currently XFS and NFS handle this manually, and AFS has a write_inode method that does nothing but waiting for data, while others are possibly missing out on this. Fortunately this change has a lot less impact than the fsync change as none of the write_inode methods starts data writeout of any form by itself. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-03-05Squashfs: get rid of obsolete definition in header filePhillip Lougher
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2010-03-05Squashfs: get rid of obsolete variable in struct squashfs_sb_infoPhillip Lougher
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2010-03-05Switch !O_CREAT case to use of do_last()Al Viro
... and now we have all intents crap well localized Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-03-05Get rid of symlink body copyingAl Viro
Now that nd->last stays around until ->put_link() is called, we can just postpone that ->put_link() in do_filp_open() a bit and don't bother with copying. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-03-05Finish pulling of -ESTALE handling to upper level in do_filp_open()Al Viro
Don't bother with path_walk() (and its retry loop); link_path_walk() will do it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-03-05Turn do_link spaghetty into a normal loopAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-03-05Unify exits in O_CREAT handlingAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-03-05Kill is_link argument of do_last()Al Viro
We set it to 1 iff we return NULL Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-03-05Pull handling of LAST_BIND into do_last(), clean up ok: part in do_filp_open()Al Viro
Note that in case of !O_CREAT we know that nd.root has already been given up Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-03-05Leave mangled flag only for setting nd.intent.open.flagAl Viro
Nothing else uses it anymore Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-03-05Get rid of passing mangled flag to do_last()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-03-05Don't pass mangled open_flag to finish_open()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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