- 02 Dec, 2011 1 commit
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Yasuaki Ishimatsu authored
cfq_cic_link() has race condition. When some processes which shared ioc issue I/O to same block device simultaneously, cfq_cic_link() returns -EEXIST sometimes. The race condition might stop I/O by following steps: step 1: Process A: Issue an I/O to /dev/sda step 2: Process A: Get an ioc (iocA here) in get_io_context() which does not linked with a cic for the device step 3: Process A: Get a new cic for the device (cicA here) in cfq_alloc_io_context() step 4: Process B: Issue an I/O to /dev/sda step 5: Process B: Get iocA in get_io_context() since process A and B share the same ioc step 6: Process B: Get a new cic for the device (cicB here) in cfq_alloc_io_context() since iocA has not been linked with a cic for the device yet step 7: Process A: Link cicA to iocA in cfq_cic_link() step 8: Process A: Dispatch I/O to driver and finish it step 9: Process B: Try to link cicB to iocA in cfq_cic_link() But it fails with showing "cfq: cic link failed!" kernel message, since iocA has already linked with cicA at step 7. step 10: Process B: Wait for finishig I/O in get_request_wait() The function does not wake up, when there is no I/O to the device. When cfq_cic_link() returns -EEXIST, it means ioc has already linked with cic. So when cfq_cic_link() return -EEXIST, retry cfq_cic_lookup(). Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: stable@kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
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- 30 Nov, 2011 1 commit
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majianpeng authored
If we fail allocating the blkpg stats, we free cfqd and cfgq. But we need to free the IDA cfqd->cic_index as well. Signed-off-by: majianpeng <majianpeng@gmail.com> Cc: stable@kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
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- 28 Nov, 2011 2 commits
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Stephen M. Cameron authored
We weren't filling in the transfer length of the flush cache command (it transfers 4 bytes of zeroes). Firmware didn't seem to be bothered by this, but it should be fixed. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Stephen M. Cameron authored
IRQF_SHARED is required for older controllers that don't support MSI(X) and which may end up sharing an interrupt. Also remove deprecated IRQF_DISABLED. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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- 25 Nov, 2011 1 commit
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Dave Young authored
The loop driver does not support discard if encryption is enabled, fix the comment. Signed-off-by: Dave Young <dyoung@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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- 23 Nov, 2011 1 commit
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Mike Snitzer authored
struct request_queue is allocated with __GFP_ZERO so its "node" field is zero before initialization. This causes an oops if node 0 is offline in the page allocator because its zonelists are not initialized. From Dave Young's dmesg: SRAT: Node 1 PXM 2 0-d0000000 SRAT: Node 1 PXM 2 100000000-330000000 SRAT: Node 0 PXM 1 330000000-630000000 Initmem setup node 1 0000000000000000-000000000affb000 ... Built 1 zonelists in Node order, mobility grouping on. ... BUG: unable to handle kernel paging request at 0000000000001c08 IP: [<ffffffff8111c355>] __alloc_pages_nodemask+0xb5/0x870 and __alloc_pages_nodemask+0xb5 translates to a NULL pointer on zonelist->_zonerefs. The fix is to initialize q->node at the time of allocation so the correct node is passed to the slab allocator later. Since blk_init_allocated_queue_node() is no longer needed, merge it with blk_init_allocated_queue(). [rientjes@google.com: changelog, initializing q->node] Cc: stable@vger.kernel.org [2.6.37+] Reported-by: Dave Young <dyoung@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: David Rientjes <rientjes@google.com> Tested-by: Dave Young <dyoung@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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- 22 Nov, 2011 13 commits
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Linus Torvalds authored
This reverts commit dc937280. As requested by Ben Herrenschmidt: "This breaks some powerpc platforms at least. The practice of having a node provide an explicit "interrupt-parent" property pointing to itself is an old trick that we've used in the past to allow a device-node to have interrupts routed to different controllers. In that case, the node also contains an interrupt-map, so the node is its own parent, the interrupt resolution hits the map, which then can route each individual interrupt to a different parent." Grant says: "Ah, nuts, yes that is broken then. Yes, please revert the commit and Rob & I will come up with a better solution. Rob, I think it can be done by explicitly checking for np == desc->interrupt_parent in of_irq_init() instead of relying on of_irq_find_parent() returning NULL." Requested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: devicetree-discuss@lists.ozlabs.org Cc: linuxppc-dev <linuxppc-dev@lists.ozlabs.org> Cc: Tanmay Inamdar <tinamdar@apm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: mount_subtree() pointless use-after-free iio: fix a leak due to improper use of anon_inode_getfd() microblaze: bury asm/namei.h
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Al Viro authored
d'oh... we'd carefully pinned mnt->mnt_sb down, dropped mnt and attempt to grab s_umount on mnt->mnt_sb. The trouble is, *mnt might've been overwritten by now... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/inputLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: ams_delta_serio - include linux/module.h Input: elantech - adjust hw_version detection logic Input: i8042 - add HP Pavilion dv4s to 'notimeout' and 'nomux' blacklists
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git://www.linux-watchdog.org/linux-watchdogLinus Torvalds authored
* git://www.linux-watchdog.org/linux-watchdog: watchdog: fix initialisation printout in s3c2410_wdt watchdog: Don't overwrite error value in wm831x_wdt_set_timeout() watchdog: adx_wdt.c: remove driver
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git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds authored
* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: NFS: Revert pnfs ugliness from the generic NFS read code path SUNRPC: destroy freshly allocated transport in case of sockaddr init error NFS: Fix a regression in the referral code nfs: move nfs_file_operations declaration to bottom of file.c (try #2) nfs: when attempting to open a directory, fall back on normal lookup (try #5)
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git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfsLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: Btrfs: remove free-space-cache.c WARN during log replay Btrfs: sectorsize align offsets in fiemap Btrfs: clear pages dirty for io and set them extent mapped Btrfs: wait on caching if we're loading the free space cache Btrfs: prefix resize related printks with btrfs: btrfs: fix stat blocks accounting Btrfs: avoid unnecessary bitmap search for cluster setup Btrfs: fix to search one more bitmap for cluster setup btrfs: mirror_num should be int, not u64 btrfs: Fix up 32/64-bit compatibility for new ioctls Btrfs: fix barrier flushes Btrfs: fix tree corruption after multi-thread snapshots and inode_cache flush
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git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linuxLinus Torvalds authored
* 'writeback-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux: writeback: remove vm_dirties and task->dirties writeback: hard throttle 1000+ dd on a slow USB stick mm: Make task in balance_dirty_pages() killable
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/stagingLinus Torvalds authored
* 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: staging: fix more ET131X build errors staging: et131x depends on NET staging: slicoss depends on NET linux-next: et131x: Fix build error when CONFIG_PM_SLEEP not enabled
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usbLinus Torvalds authored
* 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (48 commits) USB: Fix Corruption issue in USB ftdi driver ftdi_sio.c USB: option: add PID of Huawei E173s 3G modem OHCI: final fix for NVIDIA problems (I hope) USB: option: release new PID for ZTE 3G modem usb: Netlogic: Fix HC_LENGTH call in ehci-xls.c USB: storage: ene_ub6250: fix compile warnings USB: option: add id for 3G dongle Model VT1000 of Viettel USB: serial: pl2303: rm duplicate id USB: pch_udc: Change company name OKI SEMICONDUCTOR to LAPIS Semiconductor USB: pch_udc: Support new device LAPIS Semiconductor ML7831 IOH usb-storage: Accept 8020i-protocol commands longer than 12 bytes USB: quirks: adding more quirky webcams to avoid squeaky audio powerpc/usb: fix type cast for address of ioremap to compatible with 64-bit USB: at91: at91-ohci: fix set/get power USB: cdc-acm: Fix disconnect() vs close() race USB: add quirk for Logitech C600 web cam USB: EHCI: fix HUB TT scheduling issue with iso transfer USB: XHCI: resume root hubs when the controller resumes USB: workaround for bug in old version of GCC USB: ark3116 initialisation fix ...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/ttyLinus Torvalds authored
* 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: TTY: ldisc, wait for ldisc infinitely in hangup TTY: ldisc, move wait idle to caller TTY: ldisc, allow waiting for ldisc arbitrarily long Revert "tty/serial: Prevent drop of DCD on suspend for Tegra UARTs" RS485: fix inconsistencies in the meaning of some variables pch_uart: Fix DMA resource leak issue serial,mfd: Fix CMSPAR setup tty/serial: Prevent drop of DCD on suspend for Tegra UARTs pch_uart: Change company name OKI SEMICONDUCTOR to LAPIS Semiconductor pch_uart: Support new device LAPIS Semiconductor ML7831 IOH pch_uart: Fix hw-flow control issue tty: hvc_dcc: Fix duplicate character inputs jsm: Change maintainership
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Linus Torvalds authored
Merge branch 'driver-core-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core * 'driver-core-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: drivers/base/node.c: fix compilation error with older versions of gcc uio: documentation fixups device.h: Fix struct member documentation
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-miscLinus Torvalds authored
* 'char-misc-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: misc: ad525x_dpot: Fix AD8400 spi transfer size. pch_phub: Fix MAC address writing issue for LAPIS ML7831 pch_phub: Improve ADE(Address Decode Enable) control pch_phub: Change company name OKI SEMICONDUCTOR to LAPIS Semiconductor pch_phub: Support new device LAPIS Semiconductor ML7831 IOH pcie-gadget-spear: Add "platform:" prefix for platform modalias MAINTAINERS: add CHAR and MISC driver maintainers
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- 21 Nov, 2011 9 commits
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Al Viro authored
it can fail and in that case ->release() will *not* be called... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Al Viro authored
altroot support has been gone for years, along with arch/*/asm/namei.h; looks like a dummy survivor that sat it out in microblaze tree... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4Linus Torvalds authored
* 'dev' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: fix up a undefined error in ext4_free_blocks in debugging code ext4: add blk_finish_plug in error case of writepages. ext4: Remove kernel_lock annotations ext4: ignore journalled data options on remount if fs has no journal
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-clientLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: libceph: Allocate larger oid buffer in request msgs ceph: initialize root dentry ceph: fix iput race when queueing inode work
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: VFS: Log the fact that we've given ELOOP rather than creating a loop minixfs: kill manual hweight(), simplify fs/minix: Verify bitmap block counts before mounting
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Al Viro authored
wrong register returned... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Chris Mason authored
The log replay code only partially loads block groups, since the block group caching code is able to detect and deal with extents the logging code has pinned down. While the logging code is pinning down block groups, there is a bogus WARN_ON we're hitting if the code wasn't able to find an extent in the cache. This commit removes the warning because it can happen any time there isn't a valid free space cache for that block group. Signed-off-by: Chris Mason <chris.mason@oracle.com>
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Yongqiang Yang authored
sbi is not defined, so let ext4_free_blocks use EXT4_SB(sb) instead when EXT4FS_DEBUG is defined. Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
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David Howells authored
To prevent an NFS server from being used to create a directory loop in an NFS superblock on the client, the following patch was committed: commit 18367501 Author: Al Viro <viro@zeniv.linux.org.uk> Date: Tue Jul 12 21:42:24 2011 -0400 Subject: fix loop checks in d_materialise_unique() This causes ELOOP to be reported to anyone trying to access the dentry that would otherwise cause the kernel to complete the loop. However, no indication is given to the caller as to why an operation that ought to work doesn't. The fault is with the kernel, which doesn't want to try and solve the problem as it gets horrendously messy if there's another mountpoint somewhere in the trees being spliced that can't be moved[*]. [*] The real problem is that we don't handle the excision of a subtree that gets moved _out_ of what we can see. This can happen on the server where a directory is merely moved between two other dirs on the same filesystem, but where destination dir is not accessible by the client. So, given the choice to return ELOOP rather than trying to reconfigure the dentry tree, we should give the caller some indication of why they aren't being allowed to make what should be a legitimate request and log a message. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Sachin Prabhu <sprabhu@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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- 20 Nov, 2011 12 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (86 commits) ipv4: fix redirect handling ping: dont increment ICMP_MIB_INERRORS sky2: fix hang in napi_disable sky2: enforce minimum ring size bonding: Don't allow mode change via sysfs with slaves present f_phonet: fix page offset of first received fragment stmmac: fix pm functions avoiding sleep on spinlock stmmac: remove spin_lock in stmmac_ioctl. stmmac: parameters auto-tuning through HW cap reg stmmac: fix advertising 1000Base capabilties for non GMII iface stmmac: use mdelay on timeout of sw reset sky2: version 1.30 sky2: used fixed RSS key sky2: reduce default Tx ring size sky2: rename up/down functions sky2: pci posting issues sky2: fix hang on shutdown (and other irq issues) r6040: fix check against MCRO_HASHEN bit in r6040_multicast_list MAINTAINERS: change email address for shemminger pch_gbe: Move #include of module.h ...
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
* 'kvm-updates/3.2' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM guest: prevent tracing recursion with kvmclock Revert "KVM: PPC: Add support for explicit HIOR setting" KVM: VMX: Check for automatic switch msr table overflow KVM: VMX: Add support for guest/host-only profiling KVM: VMX: add support for switching of PERF_GLOBAL_CTRL KVM: s390: announce SYNC_MMU KVM: s390: Fix tprot locking KVM: s390: handle SIGP sense running intercepts KVM: s390: Fix RUNNING flag misinterpretation
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http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-armLinus Torvalds authored
* 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm: ARM: wire up process_vm_writev and process_vm_readv syscalls ARM: 7160/1: setup: avoid overflowing {elf,arch}_name from proc_info_list ARM: 7158/1: add new MFP implement for NUC900 ARM: 7157/1: fix a building WARNING for nuc900 ARM: 7156/1: l2x0: fix compile error on !CONFIG_USE_OF ARM: 7155/1: arch.h: Declare 'pt_regs' locally ARM: 7154/1: mach-bcmring: fix build error in dma.c ARM: 7153/1: mach-bcmring: fix build error in core.c ARM: 7152/1: distclean: Remove generated .dtb files ARM: 7150/1: Allow kernel unaligned accesses on ARMv6+ processors ARM: 7149/1: spi/pl022: Enable clock in probe Revert "ARM: 7098/1: kdump: copy kernel relocation code at the kexec prepare stage"
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM / Suspend: Fix bug in suspend statistics update PM / Hibernate: Fix the early termination of test modes PM / shmobile: Fix build of sh7372_pm_init() for CONFIG_PM unset PM Sleep: Do not extend wakeup paths to devices with ignore_children set PM / driver core: disable device's runtime PM during shutdown PM / devfreq: correct Kconfig dependency PM / devfreq: fix use after free in devfreq_remove_device PM / shmobile: Avoid restoring the INTCS state during initialization PM / devfreq: Remove compiler error after irq.h update PM / QoS: Properly use the WARN() macro in dev_pm_qos_add_request() PM / Clocks: Only disable enabled clocks in pm_clk_suspend() ARM: mach-shmobile: sh7372 A3SP no_suspend_console fix PM / shmobile: Don't skip debugging output in pd_power_up()
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Josef Bacik authored
We've been hitting BUG()'s in btrfs_cont_expand and btrfs_fallocate and anywhere else that calls btrfs_get_extent while running xfstests 13 in a loop. This is because fiemap is calling btrfs_get_extent with non-sectorsize aligned offsets, which will end up adding mappings that are not sectorsize aligned, which will cause problems in some cases for subsequent calls to btrfs_get_extent for similar areas that are sectorsize aligned. With this patch I ran xfstests 13 in a loop for a couple of hours and didn't hit the problem that I could previously hit in at most 20 minutes. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com>
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Josef Bacik authored
When doing the io_ctl helpers to clean up the free space cache stuff I stopped using our normal prepare_pages stuff, which means I of course forgot to do things like set the pages extent mapped, which will cause us all sorts of wonderful propblems. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com>
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Josef Bacik authored
We've been hitting panics when running xfstest 13 in a loop for long periods of time. And actually this problem has always existed so we've been hitting these things randomly for a while. Basically what happens is we get a thread coming into the allocator and reading the space cache off of disk and adding the entries to the free space cache as we go. Then we get another thread that comes in and tries to allocate from that block group. Since block_group->cached != BTRFS_CACHE_NO it goes ahead and tries to do the allocation. We do this because if we're doing the old slow way of caching we don't want to hold people up and wait for everything to finish. The problem with this is we could end up discarding the space cache at some arbitrary point in the future, which means we could very well end up allocating space that is either bad, or when the real caching happens it could end up thinking the space isn't in use when it really is and cause all sorts of other problems. The solution is to add a new flag to indicate we are loading the free space cache from disk, and always try to cache the block group if cache->cached != BTRFS_CACHE_FINISHED. That way if we are loading the space cache anybody else who tries to allocate from the block group will have to wait until it's finished to make sure it completes successfully. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com>
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Arnd Hannemann authored
For the user it is confusing to find something like: [10197.627710] new size for /dev/mapper/vg0-usr_share is 3221225472 in kernel log, because it doesn't point directly to btrfs. This patch prefixes those messages with "btrfs:" like other btrfs related printks. Signed-off-by: Arnd Hannemann <arnd@arndnet.de> Signed-off-by: Chris Mason <chris.mason@oracle.com>
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David Sterba authored
Round inode bytes and delalloc bytes up to real blocksize before converting to sector size. Otherwise eg. files smaller than 512 are reported with zero blocks due to incorrect rounding. Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@oracle.com>
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Li Zefan authored
setup_cluster_no_bitmap() searches all the extents and bitmaps starting from offset. Therefore if it returns -ENOSPC, all the bitmaps starting from offset are in the bitmaps list, so it's sufficient to search from this list in setup_cluser_bitmap(). Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
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Li Zefan authored
Suppose there are two bitmaps [0, 256], [256, 512] and one extent [100, 120] in the free space cache, and we want to setup a cluster with offset=100, bytes=50. In this case, there will be only one bitmap [256, 512] in the temporary bitmaps list, and then setup_cluster_bitmap() won't search bitmap [0, 256]. The cause is, the list is constructed in setup_cluster_no_bitmap(), and only bitmaps with bitmap_entry->offset >= offset will be added into the list, and the very bitmap that convers offset has bitmap_entry->offset <= offset. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
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Jan Schmidt authored
My previous patch introduced some u64 for failed_mirror variables, this one makes it consistent again. Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net> Signed-off-by: Chris Mason <chris.mason@oracle.com>
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