- 14 Dec, 2015 3 commits
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Fan Li authored
map.m_len should be reduced after skip a block Signed-off-by:
Fan li <fanofcode.li@samsung.com> Reviewed-by:
Chao Yu <chao2.yu@samsung.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Fan Li authored
@lend of filemap_write_and_wait_range is supposed to be a "offset in bytes where the range ends (inclusive)". Subtract 1 to avoid writing an extra page. Signed-off-by:
Fan li <fanofcode.li@samsung.com> Reviewed-by:
Chao Yu <chao2.yu@samsung.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Chao Yu authored
If read_node_page return LOCKED_PAGE, in its caller it's better a) skip unneeded 'Update' flag and mapping info verfication; b) check nid value stored in footer structure of node page. Signed-off-by:
Chao Yu <chao2.yu@samsung.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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- 09 Dec, 2015 3 commits
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Jaegeuk Kim authored
When modifying sb contents, we need to use lock its buffer. Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Jaegeuk Kim authored
Previously, f2fs_commit_super hacks the bh->blocknr to write the broken alternate superblock. Instead of it, we should use the correct logic to retrieve its buffer head with locking it appropriately. Reviewed-by:
Chao Yu <chao2.yu@samsung.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Jaegeuk Kim authored
This patch enhances the existing bit operation when f2fs allocates SSR blocks. Reviewed-by:
Chao Yu <chao2.yu@samsung.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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- 04 Dec, 2015 33 commits
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Chao Yu authored
In commit 3c454145 ("f2fs: do not trim preallocated blocks when truncating after i_size"), in order to follow the regulation: "truncate(x) where x > i_size will not trim all blocks past i_size." like other file systems, in ->setattr we invoked truncate_setsize instead of f2fs_truncate to avoid unneeded block trimming in such case, but forgot to call f2fs_convert_inline_inode keep consistency of inline data conversion rule. This patch fixes to convert inline data if necessary. Signed-off-by:
Chao Yu <chao2.yu@samsung.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Chao Yu authored
Use sbi->blocks_per_seg directly to avoid unnecessary calculation when using 1 << sbi->log_blocks_per_seg. Signed-off-by:
Chao Yu <chao2.yu@samsung.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Chao Yu authored
For direct IO, f2fs only allocate new address for the block which is not exist in the disk before, its mapping info should not exist in extent cache previously, so here we do not need to call f2fs_drop_largest_extent to drop related cache. Due to no more callers for f2fs_drop_largest_extent now, kill it. Signed-off-by:
Chao Yu <chao2.yu@samsung.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Chao Yu authored
In recover_data, value of argument 'type' will be CURSEG_WARM_NODE all the time, remove it for cleanup. Signed-off-by:
Chao Yu <chao2.yu@samsung.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Chao Yu authored
Clean up codes in lookup_journal_in_cursum() with __has_cursum_space(). Signed-off-by:
Chao Yu <chao2.yu@samsung.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Chao Yu authored
No logic changes, just clean up the error path. Signed-off-by:
Chao Yu <chao2.yu@samsung.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Jaegeuk Kim authored
If device does not support discard, some obsolete dnodes can be recovered by roll-forward. This patch enhances the recovery flow. Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Jaegeuk Kim authored
While handling extent trees, we can enter into a reclaiming path anytime. If it tries to release some extent nodes in the same extent tree, write_lock(&et->lock) would be hanged. In order to avoid the deadlock, we can just skip it. Note that, if it is an unreferenced tree, we should get write_lock(&et->lock) successfully and release all of therein nodes. Reviewed-by:
Chao Yu <chao2.yu@samsung.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Chao Yu authored
get_lock_data_page in f2fs_readdir can fail due to a lot of reasons (i.e. no memory or IO error...), it's better to report this kind of error to user rather than ignoring it. Signed-off-by:
Chao Yu <chao2.yu@samsung.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Chao Yu authored
We should clear uptodate flag for all pages atomic written when we drop them, otherwise before these cached pages were reclaimed or invalidated eventually, we will see invalid data when hitting them again. Signed-off-by:
Chao Yu <chao2.yu@samsung.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Fan Li authored
1. Skip __reverse_ulong if the bitmap is empty. 2. Reduce branches and codes. According to my test, the performance of this new version is 5% higher on an empty bitmap of 64bytes, and remains about the same in the worst scenario. Signed-off-by:
Fan li <fanofcode.li@samsung.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Chao Yu authored
If last dirty dentry page was writebacked in reclaim path, we should remove its directory inode from global dirty list to avoid unnecessary flush for this inode when doing checkpoint. Signed-off-by:
Chao Yu <chao2.yu@samsung.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Chao Yu authored
In 64-bit kernel f2fs can supports 32-bit ioctl system call by identifying encoded code which is converted from 32-bit one to 64-bit one in ->compat_ioctl. When we introduced new interfaces in ->ioctl, we forgot to enable them in ->compat_ioctl, so enable them for fixing. Signed-off-by:
Chao Yu <chao2.yu@samsung.com> [Jaegeuk Kim: fix wrongly added spaces together] Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Chao Yu authored
f2fs_sb_info::s_kobj should be released in error path of fill_super, otherwise it will lead to memory leak. This bug was found by kmemleak: dmesg: kmemleak: 2 new suspected memory leaks (see /sys/kernel/debug/kmemleak) cat /sys/kernel/debug/kmemleak unreferenced object 0xffff8800838dc358 (size 8): comm "mount", pid 4154, jiffies 4297482839 (age 1911.412s) hex dump (first 8 bytes): 7a 72 61 6d 31 00 ff ff zram1... backtrace: [<ffffffff817a3668>] kmemleak_alloc+0x28/0x50 [<ffffffff811dc99f>] __kmalloc_track_caller+0xef/0x1c0 [<ffffffff8119d1c5>] kstrdup+0x45/0x80 [<ffffffff8119d228>] kstrdup_const+0x28/0x30 [<ffffffff813d2333>] kvasprintf_const+0x63/0xa0 [<ffffffff813c59fc>] kobject_set_name_vargs+0x3c/0xa0 [<ffffffff813c5a85>] kobject_add_varg+0x25/0x60 [<ffffffff813c5b13>] kobject_init_and_add+0x53/0x70 [<ffffffffa07ced19>] f2fs_fill_super+0x9d9/0xc40 [f2fs] [<ffffffff811ff0b2>] mount_bdev+0x192/0x1d0 [<ffffffffa07cd3e5>] f2fs_mount+0x15/0x20 [f2fs] [<ffffffff811fec93>] mount_fs+0x43/0x170 [<ffffffff81220256>] vfs_kern_mount+0x76/0x160 [<ffffffff812211c8>] do_mount+0x258/0xdc0 [<ffffffff81221dab>] SyS_mount+0x7b/0xc0 [<ffffffff817aecd7>] entry_SYSCALL_64_fastpath+0x12/0x6f ... Signed-off-by:
Chao Yu <chao2.yu@samsung.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Masanari Iida authored
This patch fix some typos in Documentation/filesystems/f2fs.txt Signed-off-by:
Masanari Iida <standby24x7@gmail.com> Acked-by:
Randy Dunlap <rdunlap@infradead.org> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Chao Yu authored
This patch introduces a new ioctl F2FS_IOC_DEFRAGMENT to support file defragment in a specified range of regular file. This ioctl can be used in very limited workload: if user expects high sequential read performance in randomly written file, this interface can be used for defragmentation, after that file can be written as continuous as possible in the device. Meanwhile, it has side-effect, it will make holes in segments where blocks located originally, so it's better to trigger GC to eliminate fragment in segments. Signed-off-by:
Chao Yu <chao2.yu@samsung.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Chao Yu authored
We should always commit atomic written pages in LFS mode, otherwise data will become corrupted if we encounter suddent power cut after partial pages committed in IPU mode. Signed-off-by:
Chao Yu <chao2.yu@samsung.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Chao Yu authored
f2fs_create_root_stats can fail due to no memory, report it to user. Signed-off-by:
Chao Yu <chao2.yu@samsung.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimmLinus Torvalds authored
Pull libnvdimm fixes from Dan Williams: - NFIT parsing regression fixes from Linda. The nvdimm hot-add implementation merged in 4.4-rc1 interpreted the specification in a way that breaks actual HPE platforms. We are also closing the loop with the ACPI Working Group to get this clarification added to the spec. - Andy pointed out that his laptop without nvdimm resources is loading the e820-nvdimm module by default, fix that up to only load the module when an e820-type-12 range is present. * 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: nfit: Adjust for different _FIT and NFIT headers nfit: Fix the check for a successful NFIT merge nfit: Account for table size length variation libnvdimm, e820: skip module loading when no type-12
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull ARM KVM fixes from Paolo Bonzini: - a series of fixes to deal with the aliasing between the sp and xzr register - a fix for the cache flush fix that went in -rc3 * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: ARM/arm64: KVM: correct PTE uncachedness check arm64: KVM: Get rid of old vcpu_reg() arm64: KVM: Correctly handle zero register in system register accesses arm64: KVM: Remove const from struct sys_reg_params arm64: KVM: Correctly handle zero register during MMIO
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Paolo Bonzini authored
Merge tag 'kvm-arm-for-v4.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-master KVM/ARM fixes for v4.4-rc4 - A series of fixes to deal with the aliasing between the sp and xzr register - A fix for the cache flush fix that went in -rc3
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/soundLinus Torvalds authored
Pull sound fixes from Takashi Iwai: "This time we've got a larger number of updates, mainly from ASoC world. The only significant LOCs found here are for Realtek codecs, where most of changes are quite systematic replacements. There are also a few fixes in ASoC core side: one is the PM call order fix to ensure the DPAM resume working properly. Another is the proper cleanup call after freeing DAPM widgets, and the correction of the wrong callback set in topology API. The rest are a wide range of driver-specific small fixes, including HD-audio" * tag 'sound-4.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (35 commits) ALSA: hda - Add Conexant CX8200 (14f1:2008) codec entry ALSA: hda - Correct codec names for 14f1:50f1 and 14f1:50f3 ALSA: hda - Skip ELD notification during system suspend ASoC: core: Change power state before rechecking endpoint ASoC: fix kernel-doc warnings in sound/soc/soc-ops.c ASoC: rt5645: Add dmi_system_id "Google Terra" ASoC: rockchip: Fix incorrect VDW value for 24 bit ASoC: fsl: clarify ac97 dependency ASoC: Intel: Skylake: fix memory leak ASoC: davinci-mcasp: Fix master capture only mode ASoC: es8328: Fix shifts for mixer switches ASoC: rt5645: Add dmi_system_id "Google Wizpig" ASoC: sti: set player private data ASoC: sti: rename ST proprietary DT properties ASoC: sti: remove wrong error message ASoC: Intel: Skylake: Add I2C depends for SKL machine ASoC: topology: fix info callback for TLV byte control ASoC: rt5670: fix wrong bit def for pll src ASoC: nau8825: add pm function ASoC: rt5645: Add struct dmi_system_id "Google Edgar" for Chrome OS ...
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull power management and ACPI fixes from Rafael Wysocki: "These fix a recent regression in the ACPI PCI host bridge initialization code, clean up some recent changes (generic power domains framework, ACPI AML debugger support), fix three older but annoying bugs (PCI power management. generic power domains framework, cpufreq) and a build problem (device properties framework), and update a stale MAINTAINERS entry (ACPI backlight driver). Specifics: - Fix a regression in the ACPI PCI host bridge initialization code introduced by the recent consolidation of the host bridge handling on x86 and ia64 that forgot to take one special piece of code related to NUMA on x86 into account (Liu Jiang). - Improve the Kconfig help description of the new ACPI AML debugger support option to avoid possible confusion (Peter Zijlstra). - Remove a piece of code in the generic power domains framework that should have been removed by one of the recent commits modifying that code (Ulf Hansson). - Reduce the log level of a PCI PM message that generates a lot of false-positive log noise for some drivers and improve the message itself while at it (Imre Deak). - Fix the OF-based domain lookup code in the generic power domains framework to make it drop references to DT nodes correctly (Eric Anholt). - Prevent the cpufreq core from setting the policy back to the default after a CPU offline/online cycle for cpufreq drivers providing the ->setpolicy callback (Srinivas Pandruvada). - Fix a build problem for CONFIG_ACPI unset in the device properties framework (Hanjun Guo). - Fix a stale file path in the ACPI backlight driver entry in MAINTAINERS (Dan Carpenter)" * tag 'pm+acpi-4.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM / Domains: Fix bad of_node_put() in failure paths of genpd_dev_pm_attach() cpufreq: use last policy after online for drivers with ->setpolicy PCI / PM: Tune down retryable runtime suspend error messages PM / Domains: Validate cases of a non-bound driver in genpd governor MAINTAINERS: ACPI / video: update a file name in drivers/acpi/ ACPI / property: fix compile error for acpi_node_get_property_reference() when CONFIG_ACPI=n x86/PCI/ACPI: Fix regression caused by commit 4d6b4e69 ACPI: Better describe ACPI_DEBUGGER
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Ard Biesheuvel authored
Commit e6fab544 ("ARM/arm64: KVM: test properly for a PTE's uncachedness") modified the logic to test whether a HYP or stage-2 mapping needs flushing, from [incorrectly] interpreting the page table attributes to [incorrectly] checking whether the PFN that backs the mapping is covered by host system RAM. The PFN number is part of the output of the translation, not the input, so we have to use pte_pfn() on the contents of the PTE, not __phys_to_pfn() on the HYP virtual address or stage-2 intermediate physical address. Fixes: e6fab544 ("ARM/arm64: KVM: test properly for a PTE's uncachedness") Cc: stable@vger.kernel.org Tested-by:
Pavel Fedin <p.fedin@samsung.com> Signed-off-by:
Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by:
Marc Zyngier <marc.zyngier@arm.com>
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Pavel Fedin authored
Using oldstyle vcpu_reg() accessor is proven to be inappropriate and unsafe on ARM64. This patch converts the rest of use cases to new accessors and completely removes vcpu_reg() on ARM64. Signed-off-by:
Pavel Fedin <p.fedin@samsung.com> Reviewed-by:
Marc Zyngier <marc.zyngier@arm.com> Signed-off-by:
Marc Zyngier <marc.zyngier@arm.com>
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Pavel Fedin authored
System register accesses also use zero register for Rt == 31, and therefore using it will also result in getting SP value instead. This patch makes them also using new accessors, introduced by the previous patch. Since register value is no longer directly associated with storage inside vCPU context structure, we introduce a dedicated storage for it in struct sys_reg_params. This refactor also gets rid of "massive hack" in kvm_handle_cp_64(). Signed-off-by:
Pavel Fedin <p.fedin@samsung.com> Reviewed-by:
Marc Zyngier <marc.zyngier@arm.com> Signed-off-by:
Marc Zyngier <marc.zyngier@arm.com>
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Pavel Fedin authored
Further rework is going to introduce a dedicated storage for transfer register value in struct sys_reg_params. Before doing this we have to remove 'const' modifiers from it in all accessor functions and their callers. Signed-off-by:
Pavel Fedin <p.fedin@samsung.com> Reviewed-by:
Marc Zyngier <marc.zyngier@arm.com> Signed-off-by:
Marc Zyngier <marc.zyngier@arm.com>
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Pavel Fedin authored
On ARM64 register index of 31 corresponds to both zero register and SP. However, all memory access instructions, use ZR as transfer register. SP is used only as a base register in indirect memory addressing, or by register-register arithmetics, which cannot be trapped here. Correct emulation is achieved by introducing new register accessor functions, which can do special handling for reg_num == 31. These new accessors intentionally do not rely on old vcpu_reg() on ARM64, because it is to be removed. Since the affected code is shared by both ARM flavours, implementations of these accessors are also added to ARM32 code. This patch fixes setting MMIO register to a random value (actually SP) instead of zero by something like: *((volatile int *)reg) = 0; compilers tend to generate "str wzr, [xx]" here [Marc: Fixed 32bit splat] Signed-off-by:
Pavel Fedin <p.fedin@samsung.com> Reviewed-by:
Marc Zyngier <marc.zyngier@arm.com> Signed-off-by:
Marc Zyngier <marc.zyngier@arm.com>
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Rafael J. Wysocki authored
* pm-domains: PM / Domains: Fix bad of_node_put() in failure paths of genpd_dev_pm_attach() PM / Domains: Validate cases of a non-bound driver in genpd governor * pm-cpufreq: cpufreq: use last policy after online for drivers with ->setpolicy
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Rafael J. Wysocki authored
* acpica: ACPI: Better describe ACPI_DEBUGGER * acpi-video: MAINTAINERS: ACPI / video: update a file name in drivers/acpi/ * device-properties: ACPI / property: fix compile error for acpi_node_get_property_reference() when CONFIG_ACPI=n
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Rafael J. Wysocki authored
* acpi-pci: x86/PCI/ACPI: Fix regression caused by commit 4d6b4e69 * pm-pci: PCI / PM: Tune down retryable runtime suspend error messages
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Eric Anholt authored
It looks like these meant to be unreffing the of_parse_phandle_with_args() node, since the error paths above it don't do of_node_put. That function returns a new ref in pd_args.np, though, not a new ref on dev->of_node. Also, it would have leaked the ref in the success case. Fixes "ERROR: Bad of_node_put()" on bcm2835 in the -EPROBE_DEFER case. Fixes: aa42240a (PM / Domains: Add generic OF-based PM domain look-up) Signed-off-by:
Eric Anholt <eric@anholt.net> Acked-by:
Ulf Hansson <ulf.hansson@linaro.org> Acked-by:
Kevin Hilman <khilman@linaro.org> Cc: 3.18+ <stable@vger.kernel.org> # 3.18+ Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds authored
Pull networking fixes from David Miller: "A lot of Thanksgiving turkey leftovers accumulated, here goes: 1) Fix bluetooth l2cap_chan object leak, from Johan Hedberg. 2) IDs for some new iwlwifi chips, from Oren Givon. 3) Fix rtlwifi lockups on boot, from Larry Finger. 4) Fix memory leak in fm10k, from Stephen Hemminger. 5) We have a route leak in the ipv6 tunnel infrastructure, fix from Paolo Abeni. 6) Fix buffer pointer handling in arm64 bpf JIT,f rom Zi Shen Lim. 7) Wrong lockdep annotations in tcp md5 support, fix from Eric Dumazet. 8) Work around some middle boxes which prevent proper handling of TCP Fast Open, from Yuchung Cheng. 9) TCP repair can do huge kmalloc() requests, build paged SKBs instead. From Eric Dumazet. 10) Fix msg_controllen overflow in scm_detach_fds, from Daniel Borkmann. 11) Fix device leaks on ipmr table destruction in ipv4 and ipv6, from Nikolay Aleksandrov. 12) Fix use after free in epoll with AF_UNIX sockets, from Rainer Weikusat. 13) Fix double free in VRF code, from Nikolay Aleksandrov. 14) Fix skb leaks on socket receive queue in tipc, from Ying Xue. 15) Fix ifup/ifdown crach in xgene driver, from Iyappan Subramanian. 16) Fix clearing of persistent array maps in bpf, from Daniel Borkmann. 17) In TCP, for the cross-SYN case, we don't initialize tp->copied_seq early enough. From Eric Dumazet. 18) Fix out of bounds accesses in bpf array implementation when updating elements, from Daniel Borkmann. 19) Fill gaps in RCU protection of np->opt in ipv6 stack, from Eric Dumazet. 20) When dumping proxy neigh entries, we have to accomodate NULL device pointers properly, from Konstantin Khlebnikov. 21) SCTP doesn't release all ipv6 socket resources properly, fix from Eric Dumazet. 22) Prevent underflows of sch->q.qlen for multiqueue packet schedulers, also from Eric Dumazet. 23) Fix MAC and unicast list handling in bnxt_en driver, from Jeffrey Huang and Michael Chan. 24) Don't actively scan radar channels, from Antonio Quartulli" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (110 commits) net: phy: reset only targeted phy bnxt_en: Setup uc_list mac filters after resetting the chip. bnxt_en: enforce proper storing of MAC address bnxt_en: Fixed incorrect implementation of ndo_set_mac_address net: lpc_eth: remove irq > NR_IRQS check from probe() net_sched: fix qdisc_tree_decrease_qlen() races openvswitch: fix hangup on vxlan/gre/geneve device deletion ipv4: igmp: Allow removing groups from a removed interface ipv6: sctp: implement sctp_v6_destroy_sock() arm64: bpf: add 'store immediate' instruction ipv6: kill sk_dst_lock ipv6: sctp: add rcu protection around np->opt net/neighbour: fix crash at dumping device-agnostic proxy entries sctp: use GFP_USER for user-controlled kmalloc sctp: convert sack_needed and sack_generation to bits ipv6: add complete rcu protection around np->opt bpf: fix allocation warnings in bpf maps and integer overflow mvebu: dts: enable IP checksum with jumbo frames for Armada 38x on Port0 net: mvneta: enable setting custom TX IP checksum limit net: mvneta: fix error path for building skb ...
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- 03 Dec, 2015 1 commit
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git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull block fixes from Jens Axboe: "A collection of fixes from this series. The most important here is a regression fix for an issue that some folks would hit in blk-merge.c, and the NVMe queue depth limit for the screwed up Apple "nvme" controller. In more detail, this pull request contains: - a set of fixes for null_blk, including a fix for a few corner cases where we could hang the device. From Arianna and Paolo. - lightnvm: - A build improvement from Keith. - Update the qemu pci id detection from Matias. - Error handling fixes for leaks and other little fixes from Sudip and Wenwei. - fix from Eric where BLKRRPART would not return EBUSY for whole device mounts, only when partitions were mounted. - fix from Jan Kara, where EOF O_DIRECT reads would return negatively. - remove check for rq_mergeable() when checking limits for cloned requests. The check doesn't make any sense. It's assuming that since NOMERGE is set on the request that we don't have to recalculate limits since the request didn't change, but that's not true if the request has been redirected. From Hannes. - correctly get the bio front segment value set for single segment bio's, fixing a BUG() in blk-merge. From Ming" * 'for-linus' of git://git.kernel.dk/linux-block: nvme: temporary fix for Apple controller reset null_blk: change type of completion_nsec to unsigned long null_blk: guarantee device restart in all irq modes null_blk: set a separate timer for each command blk-merge: fix computing bio->bi_seg_front_size in case of single segment direct-io: Fix negative return from dio read beyond eof block: Always check queue limits for cloned requests lightnvm: missing nvm_lock acquire lightnvm: unconverted ppa returned in get_bb_tbl lightnvm: refactor and change vendor id for qemu lightnvm: do device max sectors boundary check first lightnvm: fix ioctl memory leaks lightnvm: free memory when gennvm register fails lightnvm: Simplify config when disabled Return EBUSY from BLKRRPART for mounted whole-dev fs
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