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2010-05-24pipe: F_SETPIPE_SZ should return -EPERM for non-rootJens Axboe1-1/+1
If the passed in size is larger than what has been set as the system wide limit and the user is not root, we want to return permission denied (not invalid value). Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-05-24block: Adjust elv_iosched_show to return "none" for bio-based DMMike Snitzer1-1/+1
Bio-based DM doesn't use an elevator (queue is !blk_queue_stackable()). Longer-term DM will not allocate an elevator for bio-based DM. But even then there will be small potential for an elevator to be allocated for a request-based DM table only to have a bio-based table be loaded in the end. Displaying "none" for bio-based DM will help avoid user confusion. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-05-24cfq-iosched: compact io_context radix_treeKonstantin Khlebnikov1-5/+39
Use small consequent indexes as radix tree keys instead of sparse cfqd address. This change will reduce radix tree depth from 11 (6 for 32-bit hosts) to 1 if host have <=64 disks under cfq control, or to 0 if there only one disk. So, this patch save 10*560 bytes for each process (5*296 for 32-bit hosts) For each cfqd allocate cic index from ida. To unlink dead cic from tree without cfqd access store index into ->key. (bit 0 -- dead mark, bits 1..30 -- index: ida produce id in range 0..2^31-1) Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-05-24cfq-iosched: remove dead_key from cfq_io_contextKonstantin Khlebnikov2-14/+28
Remove ->dead_key field from cfq_io_context to shrink its size to 128 bytes. (64 bytes for 32-bit hosts) Use lower bit in ->key as dead-mark, instead of moving key to separate field. After this for dead cfq_io_context we got cic->key != cfqd automatically. Thus, io_context's last-hit cache should work without changing. Now to check ->key for non-dead state compare it with cfqd, instead of checking ->key for non-null value as it was before. Plus remove obsolete race protection in cfq_cic_lookup. This race gone after v2.6.24-1728-g4ac845a Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2010-05-21fbmem: avoid printk format warning with 32-bit resourcesRandy Dunlap1-1/+4
Fix printk formats: drivers/video/fbmem.c: In function 'fb_do_apertures_overlap': drivers/video/fbmem.c:1494: warning: format '%llx' expects type 'long long unsigned int', but argument 2 has type 'resource_size_t' drivers/video/fbmem.c:1494: warning: format '%llx' expects type 'long long unsigned int', but argument 3 has type 'resource_size_t' drivers/video/fbmem.c:1494: warning: format '%llx' expects type 'long long unsigned int', but argument 4 has type 'resource_size_t' drivers/video/fbmem.c:1494: warning: format '%llx' expects type 'long long unsigned int', but argument 5 has type 'resource_size_t' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-21linux/elfcore.h: hide kernel functionsRoland McGrath1-2/+2
The declarations for elf_core_extra_phdrs() et al got added on the wrong side of #ifdef __KERNEL__ in linux/elfcore.h so they leak into the user header copy and we get a warning at build time about it. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-21Merge branch 'for-linus' of ↵Linus Torvalds119-1294/+907
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: (69 commits) fix handling of offsets in cris eeprom.c, get rid of fake on-stack files get rid of home-grown mutex in cris eeprom.c switch ecryptfs_write() to struct inode *, kill on-stack fake files switch ecryptfs_get_locked_page() to struct inode * simplify access to ecryptfs inodes in ->readpage() and friends AFS: Don't put struct file on the stack Ban ecryptfs over ecryptfs logfs: replace inode uid,gid,mode initialization with helper function ufs: replace inode uid,gid,mode initialization with helper function udf: replace inode uid,gid,mode init with helper ubifs: replace inode uid,gid,mode initialization with helper function sysv: replace inode uid,gid,mode initialization with helper function reiserfs: replace inode uid,gid,mode initialization with helper function ramfs: replace inode uid,gid,mode initialization with helper function omfs: replace inode uid,gid,mode initialization with helper function bfs: replace inode uid,gid,mode initialization with helper function ocfs2: replace inode uid,gid,mode initialization with helper function nilfs2: replace inode uid,gid,mode initialization with helper function minix: replace inode uid,gid,mode init with helper ext4: replace inode uid,gid,mode init with helper ... Trivial conflict in fs/fs-writeback.c (mark bitfields unsigned)
2010-05-21Merge branch 'linux-next' of ↵Linus Torvalds33-740/+1726
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (36 commits) PCI: hotplug: pciehp: Removed check for hotplug of display devices PCI: read memory ranges out of Broadcom CNB20LE host bridge PCI: Allow manual resource allocation for PCI hotplug bridges x86/PCI: make ACPI MCFG reserved error messages ACPI specific PCI hotplug: Use kmemdup PM/PCI: Update PCI power management documentation PCI: output FW warning in pci_read/write_vpd PCI: fix typos pci_device_dis/enable to pci_dis/enable_device in comments PCI quirks: disable msi on AMD rs4xx internal gfx bridges PCI: Disable MSI for MCP55 on P5N32-E SLI x86/PCI: irq and pci_ids patch for additional Intel Cougar Point DeviceIDs PCI: aerdrv: trivial cleanup for aerdrv_core.c PCI: aerdrv: trivial cleanup for aerdrv.c PCI: aerdrv: introduce default_downstream_reset_link PCI: aerdrv: rework find_aer_service PCI: aerdrv: remove is_downstream PCI: aerdrv: remove magical ROOT_ERR_STATUS_MASKS PCI: aerdrv: redefine PCI_ERR_ROOT_*_SRC PCI: aerdrv: rework do_recovery PCI: aerdrv: rework get_e_source() ...
2010-05-21Merge git://git.infradead.org/iommu-2.6Linus Torvalds13-138/+182
* git://git.infradead.org/iommu-2.6: intel-iommu: Set a more specific taint flag for invalid BIOS DMAR tables intel-iommu: Combine the BIOS DMAR table warning messages panic: Add taint flag TAINT_FIRMWARE_WORKAROUND ('I') panic: Allow warnings to set different taint flags intel-iommu: intel_iommu_map_range failed at very end of address space intel-iommu: errors with smaller iommu widths intel-iommu: Fix boot inside 64bit virtualbox with io-apic disabled intel-iommu: use physfn to search drhd for VF intel-iommu: Print out iommu seq_id intel-iommu: Don't complain that ACPI_DMAR_SCOPE_TYPE_IOAPIC is not supported intel-iommu: Avoid global flushes with caching mode. intel-iommu: Use correct domain ID when caching mode is enabled intel-iommu mistakenly uses offset_pfn when caching mode is enabled intel-iommu: use for_each_set_bit() intel-iommu: Fix section mismatch dmar_ir_support() uses dmar_tbl.
2010-05-21Merge branch 'virtio' of ↵Linus Torvalds10-409/+541
git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus * 'virtio' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: (27 commits) drivers/char: Eliminate use after free virtio: console: Accept console size along with resize control message virtio: console: Store each console's size in the console structure virtio: console: Resize console port 0 on config intr only if multiport is off virtio: console: Add support for nonblocking write()s virtio: console: Rename wait_is_over() to will_read_block() virtio: console: Don't always create a port 0 if using multiport virtio: console: Use a control message to add ports virtio: console: Move code around for future patches virtio: console: Remove config work handler virtio: console: Don't call hvc_remove() on unplugging console ports virtio: console: Return -EPIPE to hvc_console if we lost the connection virtio: console: Let host know of port or device add failures virtio: console: Add a __send_control_msg() that can send messages without a valid port virtio: Revert "virtio: disable multiport console support." virtio: add_buf_gfp trans_virtio: use virtqueue_xxx wrappers virtio-rng: use virtqueue_xxx wrappers virtio_ring: remove a level of indirection virtio_net: use virtqueue_xxx wrappers ... Fix up conflicts in drivers/net/virtio_net.c due to new virtqueue_xxx wrappers changes conflicting with some other cleanups.
2010-05-21Merge branch 'kvm-updates/2.6.35' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds81-2811/+7826
* 'kvm-updates/2.6.35' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (269 commits) KVM: x86: Add missing locking to arch specific vcpu ioctls KVM: PPC: Add missing vcpu_load()/vcpu_put() in vcpu ioctls KVM: MMU: Segregate shadow pages with different cr0.wp KVM: x86: Check LMA bit before set_efer KVM: Don't allow lmsw to clear cr0.pe KVM: Add cpuid.txt file KVM: x86: Tell the guest we'll warn it about tsc stability x86, paravirt: don't compute pvclock adjustments if we trust the tsc x86: KVM guest: Try using new kvm clock msrs KVM: x86: export paravirtual cpuid flags in KVM_GET_SUPPORTED_CPUID KVM: x86: add new KVMCLOCK cpuid feature KVM: x86: change msr numbers for kvmclock x86, paravirt: Add a global synchronization point for pvclock x86, paravirt: Enable pvclock flags in vcpu_time_info structure KVM: x86: Inject #GP with the right rip on efer writes KVM: SVM: Don't allow nested guest to VMMCALL into host KVM: x86: Fix exception reinjection forced to true KVM: Fix wallclock version writing race KVM: MMU: Don't read pdptrs with mmu spinlock held in mmu_alloc_roots KVM: VMX: enable VMXON check with SMX enabled (Intel TXT) ...
2010-05-21Merge branch 'modules' of ↵Linus Torvalds5-30/+64
git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus * 'modules' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: module: drop the lock while waiting for module to complete initialization. MODULE_DEVICE_TABLE(isapnp, ...) does nothing hisax_fcpcipnp: fix broken isapnp device table. isapnp: move definitions to mod_devicetable.h so file2alias can reach them.
2010-05-21Merge branch 'for_linus' of ↵Linus Torvalds11-295/+1710
git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86: (32 commits) Move N014, N051 and CR620 dmi information to load scm dmi table drivers/platform/x86/eeepc-wmi.c: fix build warning X86 platfrom wmi: Add debug facility to dump WMI data in a readable way X86 platform wmi: Also log GUID string when an event happens and debug is set X86 platform wmi: Introduce debug param to log all WMI events Clean up all objects used by scm model when driver initial fail or exit msi-laptop: fix up some coding style issues found by checkpatch msi-laptop: Add i8042 filter to sync sw state with BIOS when function key pressed msi-laptop: Set rfkill init state when msi-laptop intiial msi-laptop: Add MSI CR620 notebook dmi information to scm models table msi-laptop: Add N014 N051 dmi information to scm models table drivers/platform/x86: Use kmemdup drivers/platform/x86: Use kzalloc drivers/platform/x86: Clarify the MRST IPC driver description slightly eeepc-wmi: depends on BACKLIGHT_CLASS_DEVICE IPC driver for Intel Mobile Internet Device (MID) platforms classmate-laptop: Add RFKILL support. thinkpad-acpi: document backlight level writeback at driver init thinkpad-acpi: clean up ACPI handles handling thinkpad-acpi: don't depend on led_path for led firmware type (v2) ...
2010-05-21Merge branch 'next' of ↵Linus Torvalds33-511/+5286
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: DMAENGINE: extend the control command to include an arg async_tx: trim dma_async_tx_descriptor in 'no channel switch' case DMAENGINE: DMA40 fix for allocation of logical channel 0 DMAENGINE: DMA40 support paused channel status dmaengine: mpc512x: Use resource_size DMA ENGINE: Do not reset 'private' of channel ioat: Remove duplicated devm_kzalloc() calls for ioatdma_device ioat3: disable cacheline-unaligned transfers for raid operations ioat2,3: convert to producer/consumer locking ioat: convert to circ_buf DMAENGINE: Support for ST-Ericssons DMA40 block v3 async_tx: use of kzalloc/kfree requires the include of slab.h dmaengine: provide helper for setting txstate DMAENGINE: generic channel status v2 DMAENGINE: generic slave control v2 dma: timb-dma: Update comment and fix compiler warning dma: Add timb-dma DMAENGINE: COH 901 318 fix bytesleft DMAENGINE: COH 901 318 rename confusing vars
2010-05-21Merge branch 'for-linus' of git://neil.brown.name/mdLinus Torvalds14-582/+987
* 'for-linus' of git://neil.brown.name/md: (45 commits) md: don't insist on valid event count for spare devices. md: simplify updating of event count to sometimes avoid updating spares. md/raid6: Fix raid-6 read-error correction in degraded state md: restore ability of spare drives to spin down. md: Fix read balancing in RAID1 and RAID10 on drives > 2TB md/linear: standardise all printk messages md/raid0: tidy up printk messages. md/raid10: tidy up printk messages. md/raid1: improve printk messages md/raid5: improve consistency of error messages. md: remove EXPERIMENTAL designation from RAID10 md: allow integers to be passed to md/level md: notify mdstat waiters of level change md/raid4: permit raid0 takeover md/raid1: delay reads that could overtake behind-writes. md/raid1: fix confusing 'redirect sector' message. md: don't unregister the thread in mddev_suspend md: factor out init code for an mddev md: pass mddev to make_request functions rather than request_queue md: call md_stop_writes from md_stop ...
2010-05-22Merge commit '3ff195b011d7decf501a4d55aeed312731094796' into for-linusNeilBrown9962-200113/+487645
Conflicts: drivers/md/md.c - Resolved conflict in md_update_sb - Added extra 'NULL' arg to new instance of sysfs_get_dirent. Signed-off-by: NeilBrown <neilb@suse.de>
2010-05-21fix handling of offsets in cris eeprom.c, get rid of fake on-stack filesAl Viro1-14/+7
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21get rid of home-grown mutex in cris eeprom.cAl Viro1-19/+8
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21switch ecryptfs_write() to struct inode *, kill on-stack fake filesAl Viro3-45/+11
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21switch ecryptfs_get_locked_page() to struct inode *Al Viro3-15/+7
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21simplify access to ecryptfs inodes in ->readpage() and friendsAl Viro1-4/+3
we can get to them from page->mapping->host, no need to mess with file. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21AFS: Don't put struct file on the stackAl Viro4-36/+41
Don't put struct file on the stack as it takes up quite a lot of space and violates lifetime rules for struct file. Rather than calling afs_readpage() indirectly from the directory routines by way of read_mapping_page(), split afs_readpage() to have afs_page_filler() that's given a key instead of a file and call read_cache_page(), specifying the new function directly. Use it in afs_readpages() as well. Also make use of this in afs_mntpt_check_symlink() too for the same reason. Reported-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David Howells <dhowells@redhat.com>
2010-05-21Ban ecryptfs over ecryptfsAl Viro1-0/+8
This is a seriously simplified patch from Eric Sandeen; copy of rationale follows: === mounting stacked ecryptfs on ecryptfs has been shown to lead to bugs in testing. For crypto info in xattr, there is no mechanism for handling this at all, and for normal file headers, we run into other trouble: BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 IP: [<ffffffffa015b0b3>] ecryptfs_d_revalidate+0x43/0xa0 [ecryptfs] ... There doesn't seem to be any good usecase for this, so I'd suggest just disallowing the configuration. Based on a patch originally, I believe, from Mike Halcrow. === Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21logfs: replace inode uid,gid,mode initialization with helper functionAl Viro1-8/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21ufs: replace inode uid,gid,mode initialization with helper functionDmitry Monakhov1-9/+1
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21udf: replace inode uid,gid,mode init with helperDmitry Monakhov2-17/+4
Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21ubifs: replace inode uid,gid,mode initialization with helper functionDmitry Monakhov1-8/+1
Acked-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21sysv: replace inode uid,gid,mode initialization with helper functionDmitry Monakhov1-10/+1
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21reiserfs: replace inode uid,gid,mode initialization with helper functionDmitry Monakhov1-14/+4
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21ramfs: replace inode uid,gid,mode initialization with helper functionDmitry Monakhov3-32/+16
- seems what ramfs_get_inode is only locally, make it static. [AV: the hell it is; it's used by shmem, so shmem needed conversion too and no, that function can't be made static] Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21omfs: replace inode uid,gid,mode initialization with helper functionDmitry Monakhov1-3/+1
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21bfs: replace inode uid,gid,mode initialization with helper functionDmitry Monakhov1-3/+1
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21ocfs2: replace inode uid,gid,mode initialization with helper functionDmitry Monakhov1-8/+1
Acked-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21nilfs2: replace inode uid,gid,mode initialization with helper functionDmitry Monakhov1-10/+1
Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21minix: replace inode uid,gid,mode init with helperDmitry Monakhov3-12/+6
- also redesign minix_new_inode interface Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21ext4: replace inode uid,gid,mode init with helperDmitry Monakhov1-8/+4
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21ext3: replace inode uid,gid,mode init with helperDmitry Monakhov1-8/+5
Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21ext2: replace inode uid,gid,mode init with helperDmitry Monakhov1-8/+4
Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21exofs: replace inode uid,gid,mode initialization with helper functionDmitry Monakhov1-10/+1
Ack-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21btrfs: replace inode uid,gid,mode initialization with helper functionDmitry Monakhov1-10/+1
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21jfs: replace inode uid,gid,mode init with helperDmitry Monakhov1-10/+2
Acked-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-219p: replace inode uid,gid,mode initialization with helper functionDmitry Monakhov1-3/+1
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21vfs: Add inode uid,gid,mode init helperDmitry Monakhov2-1/+22
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21fs-writeback.c: bitfields should be unsignedH Hartley Sweeten1-3/+3
This fixes sparse noise: error: dubious one-bit signed bitfield Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21namei.c : update mnt when it neededHuang Shijie1-2/+3
update the mnt of the path when it is not equal to the new one. Signed-off-by: Huang Shijie <shijie8@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21vfs: add lockdep annotation to s_vfs_rename_key for ecryptfsRoland Dreier2-0/+2
> ============================================= > [ INFO: possible recursive locking detected ] > 2.6.31-2-generic #14~rbd3 > --------------------------------------------- > firefox-3.5/4162 is trying to acquire lock: > (&s->s_vfs_rename_mutex){+.+.+.}, at: [<ffffffff81139d31>] lock_rename+0x41/0xf0 > > but task is already holding lock: > (&s->s_vfs_rename_mutex){+.+.+.}, at: [<ffffffff81139d31>] lock_rename+0x41/0xf0 > > other info that might help us debug this: > 3 locks held by firefox-3.5/4162: > #0: (&s->s_vfs_rename_mutex){+.+.+.}, at: [<ffffffff81139d31>] lock_rename+0x41/0xf0 > #1: (&sb->s_type->i_mutex_key#11/1){+.+.+.}, at: [<ffffffff81139d5a>] lock_rename+0x6a/0xf0 > #2: (&sb->s_type->i_mutex_key#11/2){+.+.+.}, at: [<ffffffff81139d6f>] lock_rename+0x7f/0xf0 > > stack backtrace: > Pid: 4162, comm: firefox-3.5 Tainted: G C 2.6.31-2-generic #14~rbd3 > Call Trace: > [<ffffffff8108ae74>] print_deadlock_bug+0xf4/0x100 > [<ffffffff8108ce26>] validate_chain+0x4c6/0x750 > [<ffffffff8108d2e7>] __lock_acquire+0x237/0x430 > [<ffffffff8108d585>] lock_acquire+0xa5/0x150 > [<ffffffff81139d31>] ? lock_rename+0x41/0xf0 > [<ffffffff815526ad>] __mutex_lock_common+0x4d/0x3d0 > [<ffffffff81139d31>] ? lock_rename+0x41/0xf0 > [<ffffffff81139d31>] ? lock_rename+0x41/0xf0 > [<ffffffff8120eaf9>] ? ecryptfs_rename+0x99/0x170 > [<ffffffff81552b36>] mutex_lock_nested+0x46/0x60 > [<ffffffff81139d31>] lock_rename+0x41/0xf0 > [<ffffffff8120eb2a>] ecryptfs_rename+0xca/0x170 > [<ffffffff81139a9e>] vfs_rename_dir+0x13e/0x160 > [<ffffffff8113ac7e>] vfs_rename+0xee/0x290 > [<ffffffff8113c212>] ? __lookup_hash+0x102/0x160 > [<ffffffff8113d512>] sys_renameat+0x252/0x280 > [<ffffffff81133eb4>] ? cp_new_stat+0xe4/0x100 > [<ffffffff8101316a>] ? sysret_check+0x2e/0x69 > [<ffffffff8108c34d>] ? trace_hardirqs_on_caller+0x14d/0x190 > [<ffffffff8113d55b>] sys_rename+0x1b/0x20 > [<ffffffff81013132>] system_call_fastpath+0x16/0x1b The trace above is totally reproducible by doing a cross-directory rename on an ecryptfs directory. The issue seems to be that sys_renameat() does lock_rename() then calls into the filesystem; if the filesystem is ecryptfs, then ecryptfs_rename() again does lock_rename() on the lower filesystem, and lockdep can't tell that the two s_vfs_rename_mutexes are different. It seems an annotation like the following is sufficient to fix this (it does get rid of the lockdep trace in my simple tests); however I would like to make sure I'm not misunderstanding the locking, hence the CC list... Signed-off-by: Roland Dreier <rdreier@cisco.com> Cc: Tyler Hicks <tyhicks@linux.vnet.ibm.com> Cc: Dustin Kirkland <kirkland@canonical.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21fs/partitions: use ADDPART_FLAG_RAID instead of magic numberCesar Eduardo Barros3-3/+3
ADDPART_FLAG_RAID was introduced in commit d18d768, and most places were converted to use it instead of a hardcoded value. However, some places seem to have been missed. Change all of them to the symbolic names via the following semantic patch: @@ struct parsed_partitions *state; expression E; @@ ( - state->parts[E].flags = 1 + state->parts[E].flags = ADDPART_FLAG_RAID | - state->parts[E].flags |= 1 + state->parts[E].flags |= ADDPART_FLAG_RAID | - state->parts[E].flags = 2 + state->parts[E].flags = ADDPART_FLAG_WHOLEDISK | - state->parts[E].flags |= 2 + state->parts[E].flags |= ADDPART_FLAG_WHOLEDISK ) Signed-off-by: Cesar Eduardo Barros <cesarb@cesarb.net> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21sanitize vfs_fsync calling conventionsChristoph Hellwig11-54/+24
Now that the last user passing a NULL file pointer is gone we can remove the redundant dentry argument and associated hacks inside vfs_fsynmc_range. The next step will be removig the dentry argument from ->fsync, but given the luck with the last round of method prototype changes I'd rather defer this until after the main merge window. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21nfsd: open a file descriptor for fsync in nfs4 recoveryChristoph Hellwig1-45/+42
Instead of just looking up a path use do_filp_open to get us a file structure for the nfs4 recovery directory. This allows us to get rid of the last non-standard vfs_fsync caller with a NULL file pointer. [AV: should be using fput(), not filp_close()] Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-21fs: inode.c use atomic_inc_return in __igetRichard Kennedy1-4/+2
Using atomic_inc_return in __iget(struct inode *inode) makes the intent of this code clearer and generates less code on processors that have this operation. On x86_64 this patch reduces the text size of inode.o by 12 bytes. Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk> ---- patch against 2.6.34-rc7 compiled & tested on x86_64 AMD X2 I've been running with this patch applied for several weeks with no obvious problems. regards Richard Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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