- 16 Jun, 2012 6 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpcLinus Torvalds authored
Pull PowerPC fix from Paul Mackerras: "Just one commit, and a one-liner at that, but an important one; without it hard_irq_disable() does nothing on powerpc." * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: Make hard_irq_disable() actually hard-disable interrupts
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git://linux-nfs.org/~bfields/linuxLinus Torvalds authored
Pull two nfsd bugfixes from J. Bruce Fields. * 'for-3.5' of git://linux-nfs.org/~bfields/linux: nfsd4: BUG_ON(!is_spin_locked()) no good on UP kernels NFS: hard-code init_net for NFS callback transports
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Linus Torvalds authored
Merge tag 'stable/for-linus-3.5-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen Pull five Xen bug-fixes from Konrad Rzeszutek Wilk: - When booting as PVHVM we would try to use PV console - but would not validate the parameters causing us to crash during restore b/c we re-use the wrong event channel. - When booting on machines with SR-IOV PCI bridge we didn't check for the bridge and tried to use it. - Under AMD machines would advertise the APERFMPERF resulting in needless amount of MSRs from the guest. - A global value (xen_released_pages) was not subtracted at bootup when pages were added back in. This resulted in the balloon worker having the wrong account of how many pages were truly released. - Fix dead-lock when xen-blkfront is run in the same domain as xen-blkback. * tag 'stable/for-linus-3.5-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen: mark local pages as FOREIGN in the m2p_override xen/setup: filter APERFMPERF cpuid feature out xen/balloon: Subtract from xen_released_pages the count that is populated. xen/pci: Check for PCI bridge before using it. xen/events: Add WARN_ON when quick lookup found invalid type. xen/hvc: Check HVM_PARAM_CONSOLE_[EVTCHN|PFN] for correctness. xen/hvc: Fix error cases around HVM_PARAM_CONSOLE_PFN xen/hvc: Collapse error logic.
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usbLinus Torvalds authored
Pull USB fixes from Greg Kroah-Hartman: "Here are a bunch of tiny fixes for the USB core and drivers for 3.5-rc3 A bunch of gadget fixes, and new device ids, as well as some fixes for a number of different regressions that have been reported recently. We also fixed some PCI host controllers to resolve a long-standing bug with a whole class of host controllers that have been plaguing people for a number of kernel releases, preventing their systems from suspending properly. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>" * tag 'usb-3.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (41 commits) USB: fix gathering of interface associations usb: ehci-sh: fix illegal phy_init() running when platform_data is NULL usb: cdc-acm: fix devices not unthrottled on open Fix OMAP EHCI suspend/resume failure (i693) USB: ohci-hub: Mark ohci_finish_controller_resume() as __maybe_unused usb: use usb_serial_put in usb_serial_probe errors USB: EHCI: Fix build warning in xilinx ehci driver USB: fix PS3 EHCI systems xHCI: Increase the timeout for controller save/restore state operation xhci: Don't free endpoints in xhci_mem_cleanup() xhci: Fix invalid loop check in xhci_free_tt_info() xhci: Fix error path return value. USB: Checking the wrong variable in usb_disable_lpm() usb-storage: Add 090c:1000 to unusal-devs USB: serial-generic: use a single set of device IDs USB: serial: Enforce USB driver and USB serial driver match USB: add NO_D3_DURING_SLEEP flag and revert 151b6128 USB: option: add more YUGA device ids USB: mos7840: Fix compilation of usb serial driver USB: option: fix memory leak ...
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/ideLinus Torvalds authored
Pull IDE fixes from David S. Miller: 1) Two fixes to icside, one for a build failure and another for a warning. From Christian Dietrich. 2) Fix a bit operation that did erroneous masking, from Julia Lawall. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide: drivers/ide/ide-cs.c: adjust suspicious bit operation ide: icside.c: fix printk format string compile warning ide: icside.c: Fix compile with CONFIG_BLK_DEV_IDEDMA_ICS=n
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparcLinus Torvalds authored
Pull sparc update from David S. Miller: "This just removes some sparc headers that were never, ever, used." * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sparc: remove two unused headers
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- 15 Jun, 2012 28 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Ingo Molnar. * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/smp: Fix topology checks on AMD MCM CPUs x86/mm: Fix some kernel-doc warnings x86, um: Correct syscall table type attributes breaking gcc 4.8
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Ingo Molnar. * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: watchdog: Quiet down the boot messages perf/x86: Fix broken LBR fixup code tracing: Have tracing_off() actually turn tracing off
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull core updates (RCU and locking) from Ingo Molnar: "Most of the diffstat comes from the RCU slow boot regression fixes, but there's also a debuggability improvements/fixes." * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: memblock: Document memblock_is_region_{memory,reserved}() rcu: Precompute RCU_FAST_NO_HZ timer offsets rcu: Move RCU_FAST_NO_HZ per-CPU variables to rcu_dynticks structure rcu: Update RCU_FAST_NO_HZ tracing for lazy callbacks rcu: RCU_FAST_NO_HZ detection of callback adoption spinlock: Indicate that a lockup is only suspected kdump: Execute kmsg_dump(KMSG_DUMP_PANIC) after smp_send_stop() panic: Make panic_on_oops configurable
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git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pendingLinus Torvalds authored
Pull target updates from Nicholas Bellinger: "This series contains post merge qla_target.c / tcm_qla2xxx bugfixes from the past weeks, including the patch to allow target-core to use an optional session shutdown callback to help address an active I/O shutdown bug in tcm_qla2xxx code (Joern). Also included is a target regression bugfix releated to explict ALUA target port group CDB emulation that is CC'ed to stable (Roland)." * git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: qla2xxx: Remove version.h header file inclusion tcm_qla2xxx: Handle malformed wwn strings properly tcm_qla2xxx: tcm_qla2xxx_handle_tmr() can be static qla2xxx: Don't leak commands we give up on in qlt_do_work() qla2xxx: Don't crash if we can't find cmd for failed CTIO tcm_qla2xxx: Don't insert nacls without sessions into the btree target: Return error to initiator if SET TARGET PORT GROUPS emulation fails tcm_qla2xxx: Clear session s_id + loop_id earlier during shutdown tcm_qla2xxx: Convert to TFO->put_session() usage target: Add TFO->put_session() caller for HW fabric session shutdown
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git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfsLinus Torvalds authored
Pull btrfs update from Chris Mason: "The dates look like I had to rebase this morning because there was a compiler warning for a printk arg that I had missed earlier. These are all fixes, including one to prevent using stale pointers for device names, and lots of fixes around transaction abort cleanups (Josef, Liu Bo). Jan Schmidt also sent in a number of fixes for the new reference number tracking code. Liu Bo beat me to updating the MAINTAINERS file. Since he thought to also fix the git url, I kept his commit." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (24 commits) Btrfs: update MAINTAINERS info for BTRFS FILE SYSTEM Btrfs: destroy the items of the delayed inodes in error handling routine Btrfs: make sure that we've made everything in pinned tree clean Btrfs: avoid memory leak of extent state in error handling routine Btrfs: do not resize a seeding device Btrfs: fix missing inherited flag in rename Btrfs: fix incompat flags setting Btrfs: fix defrag regression Btrfs: call filemap_fdatawrite twice for compression Btrfs: keep inode pinned when compressing writes Btrfs: implement ->show_devname Btrfs: use rcu to protect device->name Btrfs: unlock everything properly in the error case for nocow Btrfs: fix btrfs_destroy_marked_extents Btrfs: abort the transaction if the commit fails Btrfs: wake up transaction waiters when aborting a transaction Btrfs: fix locking in btrfs_destroy_delayed_refs Btrfs: pass locked_page into extent_clear_unlock_delalloc if theres an error Btrfs: fix race in tree mod log addition Btrfs: add btrfs_next_old_leaf ...
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Liu Bo authored
Update to the latest btrfs's maintainer mail and git repo. Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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Miao Xie authored
the items of the delayed inodes were forgotten to be freed, this patch fixes it. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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Liu Bo authored
Since we have two trees for recording pinned extents, we need to go through both of them to make sure that we've done everything clean. Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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Liu Bo authored
We've forgotten to clear extent states in pinned tree, which will results in space counter mismatch and memory leak: WARNING: at fs/btrfs/extent-tree.c:7537 btrfs_free_block_groups+0x1f3/0x2e0 [btrfs]() ... space_info 2 has 8380416 free, is not full space_info total=12582912, used=4096, pinned=4096, reserved=0, may_use=0, readonly=4194304 btrfs state leak: start 29364224 end 29376511 state 1 in tree ffff880075f20090 refs 1 ... Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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Liu Bo authored
Seeding devices are not supposed to change any more. Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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Liu Bo authored
When we move a file into a directory with compression flag, we need to inherite BTRFS_INODE_COMPRESS and clear BTRFS_INODE_NOCOMPRESS as well. But if we move a file into a directory without compression flag, we need to clear both of them. It is the way how our setflags deals with compression flag, so keep the same behaviour here. Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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Paul Mackerras authored
At present, hard_irq_disable() does nothing on powerpc because of this code in include/linux/interrupt.h: #ifndef hard_irq_disable #define hard_irq_disable() do { } while(0) #endif So we need to make our hard_irq_disable be a macro. It was previously a macro until commit 7230c564 ("powerpc: Rework lazy-interrupt handling") changed it to a static inline function. Cc: stable@vger.kernel.org Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org> -- arch/powerpc/include/asm/hw_irq.h | 3 +++ 1 file changed, 3 insertions(+)
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Li Zefan authored
It's a bug, but it happens to work, as BTRFS_COMPRESS_LZO == 2, which has only one bit set. Signed-off-by: Li Zefan <lizefan@huawei.com>
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Li Zefan authored
If a file has 3 small extents: | ext1 | ext2 | ext3 | Running "btrfs fi defrag" will only defrag the last two extents, if those extent mappings hasn't been read into memory from disk. This bug was introduced by commit 17ce6ef8 ("Btrfs: add a check to decide if we should defrag the range") The cause is, that commit looked into previous and next extents using lookup_extent_mapping() only. While at it, remove the code that checks the previous extent, since it's sufficient to check the next extent. Signed-off-by: Li Zefan <lizefan@huawei.com>
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Josef Bacik authored
I removed this in an earlier commit and I was wrong. Because compression can return from filemap_fdatawrite() without having actually set any of it's pages as writeback() it can make filemap_fdatawait() do essentially nothing, and then we won't find any ordered extents because they may not have been created yet. So not only does this make fsync() completely useless, but it will also screw up if you truncate on a non-page aligned offset since we zero out the end and then wait on ordered extents and then call drop caches. We can drop the cache before the io completes and then we try to unpin the extent we just wrote we won't find it and everything goes sideways. So fix this by putting it back and put a giant comment there to keep me from trying to remove it in the future. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com>
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Josef Bacik authored
A user reported lots of problems using compression on the new code and it turns out part of the problem was that igrab() was failing when we added a new ordered extent. This is because when writing out an inode under compression we immediately return without actually doing anything to the pages, and then in another thread at some point down the line actually do the ordered dance. The problem is between the point that we start writeback and we actually add the ordered extent we could be trying to reclaim the inode, which makes igrab() return NULL. So we need to do an igrab() when we create the async extent and then drop it when we are done with it. This makes sure we stay pinned in memory until the ordered extent can get a reference on it and we are good to go. With this patch we no longer panic in btrfs_finish_ordered_io(). Thanks, Signed-off-by: Josef Bacik <josef@redhat.com>
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Josef Bacik authored
Because btrfs can remove the device that was mounted we need to have a ->show_devname so that in this case we can print out some other device in the file system to /proc/mount. So if there are multiple devices in a btrfs file system we will just print the device with the lowest devid that we can find. This will make everything consistent and deal with device removal properly. The drawback is if you mount with a device that is higher than the lowest devicd it won't show up as the mounted device in /proc/mounts, but this is a small price to pay. This was inspired by Miao Xie's patch. Thanks, Reviewed-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Josef Bacik <josef@redhat.com>
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Josef Bacik authored
Al pointed out that we can just toss out the old name on a device and add a new one arbitrarily, so anybody who uses device->name in printk could possibly use free'd memory. Instead of adding locking around all of this he suggested doing it with RCU, so I've introduced a struct rcu_string that does just that and have gone through and protected all accesses to device->name that aren't under the uuid_mutex with rcu_read_lock(). This protects us and I will use it for dealing with removing the device that we used to mount the file system in a later patch. Thanks, Reviewed-by: David Sterba <dsterba@suse.cz> Signed-off-by: Josef Bacik <josef@redhat.com>
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Josef Bacik authored
I was getting hung on umount when a transaction was aborted because a range of one of the free space inodes was still locked. This is because the nocow stuff doesn't unlock anything on error. This fixed the problem and I verified that is what was happening. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com>
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Josef Bacik authored
So we're forcing the eb's to have their ref count set to 1 so invalidatepage works but this breaks lots of things, for example root nodes, and is just plain wrong, we don't need to just evict all of this stuff. Also drop the invalidatepage altogether and add a page_cache_release(). With this patch we no longer hang when trying to access the root nodes after an aborted transaction and we no longer leak memory. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com>
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Josef Bacik authored
If a transaction commit fails we don't abort it so we don't set an error on the file system. This patch fixes that by actually calling the abort stuff and then adding a check for a fs error in the transaction start stuff to make sure it is caught properly. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com>
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Josef Bacik authored
I was getting lots of hung tasks and a NULL pointer dereference because we are not cleaning up the transaction properly when it aborts. First we need to reset the running_transaction to NULL so we don't get a bad dereference for any start_transaction callers after this. Also we cannot rely on waitqueue_active() since it's just a list_empty(), so just call wake_up() directly since that will do the barrier for us and such. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com>
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Josef Bacik authored
The transaction abort stuff was throwing warnings from the list debugging code because we do a list_del_init outside of the delayed_refs spin lock. The delayed refs locking makes baby Jesus cry so it's not hard to get wrong, but we need to take the ref head mutex to make sure it's not being processed currently, and so if it is we need to drop the spin lock and then take and drop the mutex and do the search again. If we can take the mutex then we can safely remove the head from the list and carry on. Now when the transaction aborts I don't get the list debugging warnings. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com>
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Josef Bacik authored
While doing my enospc work I got a transaction abortion that resulted in a panic when we tried to unlock_page() an already unlocked page. This is because we aren't calling extent_clear_unlock_delalloc with the locked page so it was unlocking all the pages in the range. This is wrong since __extent_writepage expects to have the page locked still unless we return *page_started as 1. This should keep us from panicing. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com>
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Daniel Mack authored
TEAC's UD-H01 (and probably other devices) have a gap in the interface number allocation of their descriptors: Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 220 bNumInterfaces 3 [...] Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 [...] Interface Association: bLength 8 bDescriptorType 11 bFirstInterface 2 bInterfaceCount 2 bFunctionClass 1 Audio bFunctionSubClass 0 bFunctionProtocol 32 iFunction 4 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 0 [...] Once a configuration is selected, usb_set_configuration() walks the known interfaces of a given configuration and calls find_iad() on each of them to set the interface association pointer the interface is included in. The problem here is that the loop variable is taken for the interface number in the comparison logic that gathers the association. Which is fine as long as the descriptors are sane. In the case above, however, the logic gets out of sync and the interface association fields of all interfaces beyond the interface number gap are wrong. Fix this by passing the interface's bInterfaceNumber to find_iad() instead. Signed-off-by: Daniel Mack <zonque@gmail.com> Reported-by: bEN <ml_all@circa.be> Reported-by: Ivan Perrone <ivanperrone@hotmail.com> Tested-by: ivan perrone <ivanperrone@hotmail.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Shimoda, Yoshihiro authored
If the platform_data is not set, pdata will be uninitialized value. Since the driver has the following code, if the condition is true when the pdata is uninitialized value, the driver may jump to the illegal phy_init(). if (pdata && pdata->phy_init) pdata->phy_init(); This patch also fixes the following warning: CC drivers/usb/host/ehci-hcd.o drivers/usb/host/ehci-sh.c: In function ‘ehci_hcd_sh_probe’: drivers/usb/host/ehci-sh.c:104: warning: ‘pdata’ may be used uninitialized in this function Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Otto Meta authored
Currently CDC-ACM devices stay throttled when their TTY is closed while throttled, stalling further communication attempts after the next open. Unthrottling during open/activate got lost starting with kernel 3.0.0 and this patch reintroduces it. Signed-off-by: Otto Meta <otto.patches@sister-shadow.de> Cc: stable <stable@vger.kernel.org> Acked-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 14 Jun, 2012 6 commits
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Stefano Stabellini authored
When the frontend and the backend reside on the same domain, even if we add pages to the m2p_override, these pages will never be returned by mfn_to_pfn because the check "get_phys_to_machine(pfn) != mfn" will always fail, so the pfn of the frontend will be returned instead (resulting in a deadlock because the frontend pages are already locked). INFO: task qemu-system-i38:1085 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. qemu-system-i38 D ffff8800cfc137c0 0 1085 1 0x00000000 ffff8800c47ed898 0000000000000282 ffff8800be4596b0 00000000000137c0 ffff8800c47edfd8 ffff8800c47ec010 00000000000137c0 00000000000137c0 ffff8800c47edfd8 00000000000137c0 ffffffff82213020 ffff8800be4596b0 Call Trace: [<ffffffff81101ee0>] ? __lock_page+0x70/0x70 [<ffffffff81a0fdd9>] schedule+0x29/0x70 [<ffffffff81a0fe80>] io_schedule+0x60/0x80 [<ffffffff81101eee>] sleep_on_page+0xe/0x20 [<ffffffff81a0e1ca>] __wait_on_bit_lock+0x5a/0xc0 [<ffffffff81101ed7>] __lock_page+0x67/0x70 [<ffffffff8106f750>] ? autoremove_wake_function+0x40/0x40 [<ffffffff811867e6>] ? bio_add_page+0x36/0x40 [<ffffffff8110b692>] set_page_dirty_lock+0x52/0x60 [<ffffffff81186021>] bio_set_pages_dirty+0x51/0x70 [<ffffffff8118c6b4>] do_blockdev_direct_IO+0xb24/0xeb0 [<ffffffff811e71a0>] ? ext3_get_blocks_handle+0xe00/0xe00 [<ffffffff8118ca95>] __blockdev_direct_IO+0x55/0x60 [<ffffffff811e71a0>] ? ext3_get_blocks_handle+0xe00/0xe00 [<ffffffff811e91c8>] ext3_direct_IO+0xf8/0x390 [<ffffffff811e71a0>] ? ext3_get_blocks_handle+0xe00/0xe00 [<ffffffff81004b60>] ? xen_mc_flush+0xb0/0x1b0 [<ffffffff81104027>] generic_file_aio_read+0x737/0x780 [<ffffffff813bedeb>] ? gnttab_map_refs+0x15b/0x1e0 [<ffffffff811038f0>] ? find_get_pages+0x150/0x150 [<ffffffff8119736c>] aio_rw_vect_retry+0x7c/0x1d0 [<ffffffff811972f0>] ? lookup_ioctx+0x90/0x90 [<ffffffff81198856>] aio_run_iocb+0x66/0x1a0 [<ffffffff811998b8>] do_io_submit+0x708/0xb90 [<ffffffff81199d50>] sys_io_submit+0x10/0x20 [<ffffffff81a18d69>] system_call_fastpath+0x16/0x1b The explanation is in the comment within the code: We need to do this because the pages shared by the frontend (xen-blkfront) can be already locked (lock_page, called by do_read_cache_page); when the userspace backend tries to use them with direct_IO, mfn_to_pfn returns the pfn of the frontend, so do_blockdev_direct_IO is going to try to lock the same pages again resulting in a deadlock. A simplified call graph looks like this: pygrub QEMU ----------------------------------------------- do_read_cache_page io_submit | | lock_page ext3_direct_IO | bio_add_page | lock_page Internally the xen-blkback uses m2p_add_override to swizzle (temporarily) a 'struct page' to have a different MFN (so that it can point to another guest). It also can easily find out whether another pfn corresponding to the mfn exists in the m2p, and can set the FOREIGN bit in the p2m, making sure that mfn_to_pfn returns the pfn of the backend. This allows the backend to perform direct_IO on these pages, but as a side effect prevents the frontend from using get_user_pages_fast on them while they are being shared with the backend. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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J. Bruce Fields authored
Most frequent symptom was a BUG triggering in expire_client, with the server locking up shortly thereafter. Introduced by 508dc6e1 "nfsd41: free_session/free_client must be called under the client_lock". Cc: stable@kernel.org Cc: Benny Halevy <bhalevy@tonian.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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Stanislav Kinsbursky authored
In case of destroying mount namespace on child reaper exit, nsproxy is zeroed to the point already. So, dereferencing of it is invalid. This patch hard-code "init_net" for all network namespace references for NFS callback services. This will be fixed with proper NFS callback containerization. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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Jan Schmidt authored
When adding to the tree modification log, we grab two locks at different stages. We must not drop the outer lock until we're done with section protected by the inner lock. This moves the unlock call for the outer lock to the appropriate position. Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
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Jan Schmidt authored
To make sense of the tree mod log, the backref walker not only needs btrfs_search_old_slot, but it also called btrfs_next_leaf, which in turn was calling btrfs_search_slot. This obviously didn't give the correct result. This commit adds btrfs_next_old_leaf, a drop-in replacement for btrfs_next_leaf with a time_seq parameter. If it is zero, it behaves exactly like btrfs_next_leaf. If it is non-zero, it will use btrfs_search_old_slot with this time_seq parameter. Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
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Jan Schmidt authored
In __tree_mod_log_oldest_root() we must return the found operation even if it's not a ROOT_REPLACE operation. Otherwise, the caller assumes that there are no operations to be rewinded and returns immediately. The code in the caller is modified to improve readability. Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
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