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When no interfaces are returned by the server we cannot open multiple
channels. Make it more obvious by reporting that to the user at the
VFS log level.
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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RHBZ: 1795423
This is the SMB1 version of a patch we already have for SMB2
In recent DFS updates we have a new variable controlling how many times we will
retry to reconnect the share.
If DFS is not used, then this variable is initialized to 0 in:
static inline int
dfs_cache_get_nr_tgts(const struct dfs_cache_tgt_list *tl)
{
return tl ? tl->tl_numtgts : 0;
}
This means that in the reconnect loop in smb2_reconnect() we will immediately wrap retries to -1
and never actually get to pass this conditional:
if (--retries)
continue;
The effect is that we no longer reach the point where we fail the commands with -EHOSTDOWN
and basically the kernel threads are virtually hung and unkillable.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
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Makes it easier to debug errors on writeback that happen later,
and are being returned on flush or fsync
For example:
writetest-17829 [002] .... 13583.407859: cifs_flush_err: ino=90 rc=-28
Signed-off-by: Steve French <stfrench@microsoft.com>
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We ran into a confusing problem where an application wasn't checking
return code on close and so user didn't realize that the application
ran out of disk space. log a warning message (once) in these
cases. For example:
[ 8407.391909] Out of space writing to \\oleg-server\small-share
Signed-off-by: Steve French <stfrench@microsoft.com>
Reported-by: Oleg Kravtsov <oleg@tuxera.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
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RHBZ: 1579050
If we have a soft mount we should fail commands for session-setup
failures (such as the password having changed/ account being deleted/ ...)
and return an error back to the application.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Stable <stable@vger.kernel.org>
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Add check for null cifs_sb to create_options helper
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
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When "backup intent" is requested on the mount (e.g. backupuid or
backupgid mount options), the corresponding flag was missing from
some of the operations.
Change all operations to use the macro cifs_create_options() to
set the backup intent flag if needed.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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git://git.samba.org/sfrench/cifs-2.6
Pull cifs fix from Steve French:
"Small SMB3 fix for stable (fixes problem with soft mounts)"
* tag '5.6-rc-small-smb3-fix-for-stable' of git://git.samba.org/sfrench/cifs-2.6:
cifs: update internal module version number
cifs: fix soft mounts hanging in the reconnect code
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Brown paperbag time: fetching ->i_uid/->i_mode really should've been
done from nd->inode. I even suggested that, but the reason for that has
slipped through the cracks and I went for dir->d_inode instead - made
for more "obvious" patch.
Analysis:
- at the entry into do_last() and all the way to step_into(): dir (aka
nd->path.dentry) is known not to have been freed; so's nd->inode and
it's equal to dir->d_inode unless we are already doomed to -ECHILD.
inode of the file to get opened is not known.
- after step_into(): inode of the file to get opened is known; dir
might be pointing to freed memory/be negative/etc.
- at the call of may_create_in_sticky(): guaranteed to be out of RCU
mode; inode of the file to get opened is known and pinned; dir might
be garbage.
The last was the reason for the original patch. Except that at the
do_last() entry we can be in RCU mode and it is possible that
nd->path.dentry->d_inode has already changed under us.
In that case we are going to fail with -ECHILD, but we need to be
careful; nd->inode is pointing to valid struct inode and it's the same
as nd->path.dentry->d_inode in "won't fail with -ECHILD" case, so we
should use that.
Reported-by: "Rantala, Tommi T. (Nokia - FI/Espoo)" <tommi.t.rantala@nokia.com>
Reported-by: syzbot+190005201ced78a74ad6@syzkaller.appspotmail.com
Wearing-brown-paperbag: Al Viro <viro@zeniv.linux.org.uk>
Cc: stable@kernel.org
Fixes: d0cb50185ae9 ("do_last(): fetch directory ->i_mode and ->i_uid before it's too late")
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kconfig updates from Masahiro Yamada:
- add 'yes2modconfig' and 'mod2yesconfig' targets (useful mainly for
turning syzbot configs into more modular ones as a step to minimizing
the result)
- sanitize help text
- various code cleanups
* tag 'kconfig-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kconfig: fix documentation typos
kconfig: fix an "implicit declaration of function" warning
kconfig: fix nesting of symbol help text
kconfig: distinguish between dependencies and visibility in help text
kconfig: list all definitions of a symbol in help text
kconfig: Add yes2modconfig and mod2yesconfig targets.
kconfig: use $(PERL) in Makefile
kconfig: fix too deep indentation in Makefile
kconfig: localmodconfig: fix indentation for closing brace
kconfig: localmodconfig: remove unused $config
kconfig: squash prop_alloc() into menu_add_prop()
kconfig: remove sym from struct property
kconfig: remove 'prompt' argument from menu_add_prop()
kconfig: move prompt handling to menu_add_prompt() from menu_add_prop()
kconfig: remove 'prompt' symbol
kconfig: drop T_WORD from the RHS of 'prompt' symbol
kconfig: use parent->dep as the parentdep of 'menu'
kconfig: remove the rootmenu check in menu_add_prop()
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- detect missing include guard in UAPI headers
- do not create orphan built-in.a or obj-y objects
- generate modules.builtin more simply, and drop tristate.conf
- simplify built-in initramfs creation
- make linux-headers deb package thinner
- optimize the deb package build script
- misc cleanups
* tag 'kbuild-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (34 commits)
builddeb: split libc headers deployment out into a function
builddeb: split kernel headers deployment out into a function
builddeb: remove redundant make for ARCH=um
builddeb: avoid invoking sub-shells where possible
builddeb: remove redundant $objtree/
builddeb: match temporary directory name to the package name
builddeb: remove unneeded files in hdrobjfiles for headers package
kbuild: use -S instead of -E for precise cc-option test in Kconfig
builddeb: allow selection of .deb compressor
kbuild: remove 'Building modules, stage 2.' log
kbuild: remove *.tmp file when filechk fails
kbuild: remove PYTHON2 variable
modpost: assume STT_SPARC_REGISTER is defined
gen_initramfs.sh: remove intermediate cpio_list on errors
initramfs: refactor the initramfs build rules
gen_initramfs.sh: always output cpio even without -o option
initramfs: add default_cpio_list, and delete -d option support
initramfs: generate dependency list and cpio at the same time
initramfs: specify $(src)/gen_initramfs.sh as a prerequisite in Makefile
initramfs: make initramfs compression choice non-optional
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random
Pull random changes from Ted Ts'o:
"Change /dev/random so that it uses the CRNG and only blocking if the
CRNG hasn't initialized, instead of the old blocking pool. Also clean
up archrandom.h, and some other miscellaneous cleanups"
* tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random: (24 commits)
s390x: Mark archrandom.h functions __must_check
powerpc: Mark archrandom.h functions __must_check
powerpc: Use bool in archrandom.h
x86: Mark archrandom.h functions __must_check
linux/random.h: Mark CONFIG_ARCH_RANDOM functions __must_check
linux/random.h: Use false with bool
linux/random.h: Remove arch_has_random, arch_has_random_seed
s390: Remove arch_has_random, arch_has_random_seed
powerpc: Remove arch_has_random, arch_has_random_seed
x86: Remove arch_has_random, arch_has_random_seed
random: remove some dead code of poolinfo
random: fix typo in add_timer_randomness()
random: Add and use pr_fmt()
random: convert to ENTROPY_BITS for better code readability
random: remove unnecessary unlikely()
random: remove kernel.random.read_wakeup_threshold
random: delete code to pull data into pools
random: remove the blocking pool
random: make /dev/random be almost like /dev/urandom
random: ignore GRND_RANDOM in getentropy(2)
...
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"Resource management:
- Improve resource assignment for hot-added nested bridges, e.g.,
Thunderbolt (Nicholas Johnson)
Power management:
- Optionally print config space of devices before suspend (Chen Yu)
- Increase D3 delay for AMD Ryzen5/7 XHCI controllers (Daniel Drake)
Virtualization:
- Generalize DMA alias quirks (James Sewart)
- Add DMA alias quirk for PLX PEX NTB (James Sewart)
- Fix IOV memory leak (Navid Emamdoost)
AER:
- Log which device prevents error recovery (Yicong Yang)
Peer-to-peer DMA:
- Whitelist Intel SkyLake-E (Armen Baloyan)
Broadcom iProc host bridge driver:
- Apply PAXC quirk whether driver is built-in or module (Wei Liu)
Broadcom STB host bridge driver:
- Add Broadcom STB PCIe host controller driver (Jim Quinlan)
Intel Gateway SoC host bridge driver:
- Add driver for Intel Gateway SoC (Dilip Kota)
Intel VMD host bridge driver:
- Add support for DMA aliases on other buses (Jon Derrick)
- Remove dma_map_ops overrides (Jon Derrick)
- Remove now-unused X86_DEV_DMA_OPS (Christoph Hellwig)
NVIDIA Tegra host bridge driver:
- Fix Tegra30 afi_pex2_ctrl register offset (Marcel Ziswiler)
Panasonic UniPhier host bridge driver:
- Remove module code since driver can't be built as a module
(Masahiro Yamada)
Qualcomm host bridge driver:
- Add support for SDM845 PCIe controller (Bjorn Andersson)
TI Keystone host bridge driver:
- Fix "num-viewport" DT property error handling (Kishon Vijay Abraham I)
- Fix link training retries initiation (Yurii Monakov)
- Fix outbound region mapping (Yurii Monakov)
Misc:
- Add Switchtec Gen4 support (Kelvin Cao)
- Add Switchtec Intercomm Notify and Upstream Error Containment
support (Logan Gunthorpe)
- Use dma_set_mask_and_coherent() since Switchtec supports 64-bit
addressing (Wesley Sheng)"
* tag 'pci-v5.6-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (60 commits)
PCI: Allow adjust_bridge_window() to shrink resource if necessary
PCI: Set resource size directly in adjust_bridge_window()
PCI: Rename extend_bridge_window() to adjust_bridge_window()
PCI: Rename extend_bridge_window() parameter
PCI: Consider alignment of hot-added bridges when assigning resources
PCI: Remove local variable usage in pci_bus_distribute_available_resources()
PCI: Pass size + alignment to pci_bus_distribute_available_resources()
PCI: Rename variables
PCI: vmd: Add two VMD Device IDs
PCI: Remove unnecessary braces
PCI: brcmstb: Add MSI support
PCI: brcmstb: Add Broadcom STB PCIe host controller driver
x86/PCI: Remove X86_DEV_DMA_OPS
PCI: vmd: Remove dma_map_ops overrides
iommu/vt-d: Remove VMD child device sanity check
iommu/vt-d: Use pci_real_dma_dev() for mapping
PCI: Introduce pci_real_dma_dev()
x86/PCI: Expose VMD's pci_dev in struct pci_sysdata
x86/PCI: Add to_pci_sysdata() helper
PCI/AER: Initialize aer_fifo
...
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- New staging driver for Rockship ISPv1 unit
- New staging driver for Rockchip MIPI Synopsys DPHY RX0
- y2038 fixes at V4L2 API (backward-compatible)
- A dvb core fix when receiving invalid EIT sections
- Some clang-specific warnings got fixed
- Added support for touch V4L2 interface at vivid
- Several drivers were converted to use the new
i2c_new_scanned_device() kAPI
- Added sm1 support at meson's vdec driver
- Several other driver cleanups, fixes and improvements
* tag 'media/v5.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (207 commits)
media: staging/intel-ipu3: remove TODO item about acronyms
media: v4l2-fwnode: Print the node name while parsing endpoints
media: Revert "media: staging/intel-ipu3: make imgu use fixed running mode"
media: mt9v111: constify copied structure
media: platform: VIDEO_MEDIATEK_JPEG can also depend on MTK_IOMMU
media: uvcvideo: Add a quirk to force GEO GC6500 Camera bits-per-pixel value
media: uvcvideo: Avoid cyclic entity chains due to malformed USB descriptors
media: hantro: fix post-processing NULL pointer dereference
media: rcar-vin: Use correct pixel format when aligning format
media: MAINTAINERS: add entry for Rockchip ISP1 driver
media: staging: rkisp1: add TODO file for staging
media: staging: rkisp1: add document for rkisp1 meta buffer format
media: staging: rkisp1: add output device for parameters
media: staging: rkisp1: add capture device for statistics
media: staging: rkisp1: add user space ABI definitions
media: staging: rkisp1: add streaming paths
media: staging: rkisp1: add Rockchip ISP1 base driver
media: staging: phy-rockchip-dphy-rx0: add Rockchip MIPI Synopsys DPHY RX0 driver
media: staging: dt-bindings: add Rockchip MIPI RX D-PHY RX0 yaml bindings
media: staging: dt-bindings: add Rockchip ISP1 yaml bindings
...
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Pull rdma updates from Jason Gunthorpe:
"A very quiet cycle with few notable changes. Mostly the usual list of
one or two patches to drivers changing something that isn't quite rc
worthy. The subsystem seems to be seeing a larger number of rework and
cleanup style patches right now, I feel that several vendors are
prepping their drivers for new silicon.
Summary:
- Driver updates and cleanup for qedr, bnxt_re, hns, siw, mlx5, mlx4,
rxe, i40iw
- Larger series doing cleanup and rework for hns and hfi1.
- Some general reworking of the CM code to make it a little more
understandable
- Unify the different code paths connected to the uverbs FD scheme
- New UAPI ioctls conversions for get context and get async fd
- Trace points for CQ and CM portions of the RDMA stack
- mlx5 driver support for virtio-net formatted rings as RDMA raw
ethernet QPs
- verbs support for setting the PCI-E relaxed ordering bit on DMA
traffic connected to a MR
- A couple of bug fixes that came too late to make rc7"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (108 commits)
RDMA/core: Make the entire API tree static
RDMA/efa: Mask access flags with the correct optional range
RDMA/cma: Fix unbalanced cm_id reference count during address resolve
RDMA/umem: Fix ib_umem_find_best_pgsz()
IB/mlx4: Fix leak in id_map_find_del
IB/opa_vnic: Spelling correction of 'erorr' to 'error'
IB/hfi1: Fix logical condition in msix_request_irq
RDMA/cm: Remove CM message structs
RDMA/cm: Use IBA functions for complex structure members
RDMA/cm: Use IBA functions for simple structure members
RDMA/cm: Use IBA functions for swapping get/set acessors
RDMA/cm: Use IBA functions for simple get/set acessors
RDMA/cm: Add SET/GET implementations to hide IBA wire format
RDMA/cm: Add accessors for CM_REQ transport_type
IB/mlx5: Return the administrative GUID if exists
RDMA/core: Ensure that rdma_user_mmap_entry_remove() is a fence
IB/mlx4: Fix memory leak in add_gid error flow
IB/mlx5: Expose RoCE accelerator counters
RDMA/mlx5: Set relaxed ordering when requested
RDMA/core: Add the core support field to METHOD_GET_CONTEXT
...
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git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux
Pull thermal fixes from Daniel Lezcano:
- Fix a severe docs build failure for cpu idle cooling device (Randy
Dunlap)
- Fix a spelling mistake in the error message for the stm32 (Colin Ian
King)
* tag 'thermal-v5.6-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux:
thermal: stm32: fix spelling mistake "preprare" -> "prepare"
Documentation: cpu-idle-cooling: fix a SEVERE docs build failure
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more ACPI updates from Rafael Wysocki:
"Fix up MAINTAINERS entires related to ACPI (Andy Shevchenko)"
* tag 'acpi-5.6-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
MAINTAINERS: Sort entries in database for X-POWERS AXP288
MAINTAINERS: Sort entries in database for ACPICA
MAINTAINERS: Sort entries in database for ACPI
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more power manadement updates from Rafael Wysocki:
"Prevent cpufreq from creating excessively large stack frames and fix
the handling of devices deleted during system-wide resume in the PM
core (Rafael Wysocki), revert a problematic commit affecting the
cpupower utility and correct its man page (Thomas Renninger,
Brahadambal Srinivasan), and improve the intel_pstate_tracer utility
(Doug Smythies)"
* tag 'pm-5.6-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
tools/power/x86/intel_pstate_tracer: change several graphs to autoscale y-axis
tools/power/x86/intel_pstate_tracer: changes for python 3 compatibility
Correction to manpage of cpupower
cpufreq: Avoid creating excessively large stack frames
PM: core: Fix handling of devices deleted during system-wide resume
cpupower: Revert library ABI changes from commit ae2917093fb60bdc1ed3e
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To 2.25
Signed-off-by: Steve French <stfrench@microsoft.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull gfs2 updates from Andreas Gruenbacher:
- Fix some corner cases on filesystems with a block size < page size.
- Fix a corner case that could expose incorrect access times over nfs.
- Revert an otherwise sensible revoke accounting cleanup that causes
assertion failures. The revoke accounting is whacky and needs to be
fixed properly before we can add back this cleanup.
- Various other minor cleanups.
In addition, please expect to see another pull request from Bob Peterson
about his gfs2 recovery patch queue shortly.
* tag 'gfs2-for-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
Revert "gfs2: eliminate tr_num_revoke_rm"
gfs2: remove unused LBIT macros
fs/gfs2: remove unused IS_DINODE and IS_LEAF macros
gfs2: Remove GFS2_MIN_LVB_SIZE define
gfs2: Fix incorrect variable name
gfs2: Avoid access time thrashing in gfs2_inode_lookup
gfs2: minor cleanup: remove unneeded variable ret in gfs2_jdata_writepage
gfs2: eliminate ssize parameter from gfs2_struct2blk
gfs2: Another gfs2_find_jhead fix
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Pull iomap fix from Darrick Wong:
"A single patch fixing an off-by-one error when we're checking to see
how far we're gotten into an EOF page"
* tag 'iomap-5.6-merge-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
fs: Fix page_mkwrite off-by-one errors
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Pull updates from Andrew Morton:
"Most of -mm and quite a number of other subsystems: hotfixes, scripts,
ocfs2, misc, lib, binfmt, init, reiserfs, exec, dma-mapping, kcov.
MM is fairly quiet this time. Holidays, I assume"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (118 commits)
kcov: ignore fault-inject and stacktrace
include/linux/io-mapping.h-mapping: use PHYS_PFN() macro in io_mapping_map_atomic_wc()
execve: warn if process starts with executable stack
reiserfs: prevent NULL pointer dereference in reiserfs_insert_item()
init/main.c: fix misleading "This architecture does not have kernel memory protection" message
init/main.c: fix quoted value handling in unknown_bootoption
init/main.c: remove unnecessary repair_env_string in do_initcall_level
init/main.c: log arguments and environment passed to init
fs/binfmt_elf.c: coredump: allow process with empty address space to coredump
fs/binfmt_elf.c: coredump: delete duplicated overflow check
fs/binfmt_elf.c: coredump: allocate core ELF header on stack
fs/binfmt_elf.c: make BAD_ADDR() unlikely
fs/binfmt_elf.c: better codegen around current->mm
fs/binfmt_elf.c: don't copy ELF header around
fs/binfmt_elf.c: fix ->start_code calculation
fs/binfmt_elf.c: smaller code generation around auxv vector fill
lib/find_bit.c: uninline helper _find_next_bit()
lib/find_bit.c: join _find_next_bit{_le}
uapi: rename ext2_swab() to swab() and share globally in swab.h
lib/scatterlist.c: adjust indentation in __sg_alloc_table
...
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git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
Pull module updates from Jessica Yu:
"Summary of modules changes for the 5.6 merge window:
- Add "MS" (SHF_MERGE|SHF_STRINGS) section flags to __ksymtab_strings
to indicate to the linker that it can perform string deduplication
(i.e., duplicate strings are reduced to a single copy in the string
table). This means any repeated namespace string would be merged to
just one entry in __ksymtab_strings.
- Various code cleanups and small fixes (fix small memleak in error
path, improve moduleparam docs, silence rcu warnings, improve error
logging)"
* tag 'modules-for-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
module.h: Annotate mod_kallsyms with __rcu
module: avoid setting info->name early in case we can fall back to info->mod->name
modsign: print module name along with error message
kernel/module: Fix memleak in module_add_modinfo_attrs()
export.h: reduce __ksymtab_strings string duplication by using "MS" section flags
moduleparam: fix kerneldoc
modules: lockdep: Suppress suspicious RCU usage warning
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Pull MIPS changes from Paul Burton:
"Nothing too big or scary in here:
- Support mremap() for the VDSO, primarily to allow CRIU to restore
the VDSO to its checkpointed location.
- Restore the MIPS32 cBPF JIT, after having reverted the enablement
of the eBPF JIT for MIPS32 systems in the 5.5 cycle.
- Improve cop0 counter synchronization behaviour whilst onlining CPUs
by running with interrupts disabled.
- Better match FPU behaviour when emulating multiply-accumulate
instructions on pre-r6 systems that implement IEEE754-2008 style
MACs.
- Loongson64 kernels now build using the MIPS64r2 ISA, allowing them
to take advantage of instructions introduced by r2.
- Support for the Ingenic X1000 SoC & the really nice little CU Neo
development board that's using it.
- Support for WMAC on GARDENA Smart Gateway devices.
- Lots of cleanup & refactoring of SGI IP27 (Origin 2*) support in
preparation for introducing IP35 (Origin 3*) support.
- Various Kconfig & Makefile cleanups"
* tag 'mips_5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (60 commits)
MIPS: PCI: Add detection of IOC3 on IO7, IO8, IO9 and Fuel
MIPS: Loongson64: Disable exec hazard
MIPS: Loongson64: Bump ISA level to MIPSR2
MIPS: Make DIEI support as a config option
MIPS: OCTEON: octeon-irq: fix spelling mistake "to" -> "too"
MIPS: asm: local: add barriers for Loongson
MIPS: Loongson64: Select mac2008 only feature
MIPS: Add MAC2008 Support
Revert "MIPS: Add custom serial.h with BASE_BAUD override for generic kernel"
MIPS: sort MIPS and MIPS_GENERIC Kconfig selects alphabetically (again)
MIPS: make CPU_HAS_LOAD_STORE_LR opt-out
MIPS: generic: don't unconditionally select PINCTRL
MIPS: don't explicitly select LIBFDT in Kconfig
MIPS: sync-r4k: do slave counter synchronization with disabled HW interrupts
MIPS: SGI-IP30: Check for valid pointer before using it
MIPS: syscalls: fix indentation of the 'SYSNR' message
MIPS: boot: fix typo in 'vmlinux.lzma.its' target
MIPS: fix indentation of the 'RELOCS' message
dt-bindings: Document loongson vendor-prefix
MIPS: CU1000-Neo: Refresh defconfig to support HWMON and WiFi.
...
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git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull ARC updates from Vineet Gupta:
- Wire up clone3 syscall
- ARCv2 FPU state save/restore across context switch
- AXS10x platform and misc fixes
* tag 'arc-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
ARCv2: fpu: preserve userspace fpu state
ARC: fpu: declutter code, move bits out into fpu.h
ARC: wireup clone3 syscall
ARC: [plat-axs10x]: Add missing multicast filter number to GMAC node
ARC: update feature support for jump-labels
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Palmer Dabbelt:
"This contains a handful of patches for this merge window:
- Support for kasan
- 32-bit physical addresses on rv32i-based systems
- Support for CONFIG_DEBUG_VIRTUAL
- DT entry for the FU540 GPIO controller, which has recently had a
device driver merged
These boot a buildroot-based system on QEMU's virt board for me"
* tag 'riscv-for-linus-5.6-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: dts: Add DT support for SiFive FU540 GPIO driver
riscv: mm: add support for CONFIG_DEBUG_VIRTUAL
riscv: keep 32-bit kernel to 32-bit phys_addr_t
kasan: Add riscv to KASAN documentation.
riscv: Add KASAN support
kasan: No KASAN's memmove check if archs don't have it.
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Misc fixes:
- three fixes and a cleanup for the resctrl code
- a HyperV fix
- a fix to /proc/kcore contents in live debugging sessions
- a fix for the x86 decoder opcode map"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/decoder: Add TEST opcode to Group3-2
x86/resctrl: Clean up unused function parameter in mkdir path
x86/resctrl: Fix a deadlock due to inaccurate reference
x86/resctrl: Fix use-after-free due to inaccurate refcount of rdtgroup
x86/resctrl: Fix use-after-free when deleting resource groups
x86/hyper-v: Add "polling" bit to hv_synic_sint
x86/crash: Define arch_crash_save_vmcoreinfo() if CONFIG_CRASH_CORE=y
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Don't instrument 3 more files that contain debugging facilities and
produce large amounts of uninteresting coverage for every syscall.
The following snippets are sprinkled all over the place in kcov traces
in a debugging kernel. We already try to disable instrumentation of
stack unwinding code and of most debug facilities. I guess we did not
use fault-inject.c at the time, and stacktrace.c was somehow missed (or
something has changed in kernel/configs). This change both speeds up
kcov (kernel doesn't need to store these PCs, user-space doesn't need to
process them) and frees trace buffer capacity for more useful coverage.
should_fail
lib/fault-inject.c:149
fail_dump
lib/fault-inject.c:45
stack_trace_save
kernel/stacktrace.c:124
stack_trace_consume_entry
kernel/stacktrace.c:86
stack_trace_consume_entry
kernel/stacktrace.c:89
... a hundred frames skipped ...
stack_trace_consume_entry
kernel/stacktrace.c:93
stack_trace_consume_entry
kernel/stacktrace.c:86
Link: http://lkml.kernel.org/r/20200116111449.217744-1-dvyukov@gmail.com
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Reviewed-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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io_mapping_map_atomic_wc()
Use PHYS_PFN() macro in io_mapping_map_atomic_wc() instead of open coded
variant.
Link: http://lkml.kernel.org/r/20191209165624.56351-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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There were few episodes of silent downgrade to an executable stack over
years:
1) linking innocent looking assembly file will silently add executable
stack if proper linker options is not given as well:
$ cat f.S
.intel_syntax noprefix
.text
.globl f
f:
ret
$ cat main.c
void f(void);
int main(void)
{
f();
return 0;
}
$ gcc main.c f.S
$ readelf -l ./a.out
GNU_STACK 0x0000000000000000 0x0000000000000000 0x0000000000000000
0x0000000000000000 0x0000000000000000 RWE 0x10
^^^
2) converting C99 nested function into a closure
https://nullprogram.com/blog/2019/11/15/
void intsort2(int *base, size_t nmemb, _Bool invert)
{
int cmp(const void *a, const void *b)
{
int r = *(int *)a - *(int *)b;
return invert ? -r : r;
}
qsort(base, nmemb, sizeof(*base), cmp);
}
will silently require stack trampolines while non-closure version will
not.
Without doubt this behaviour is documented somewhere, add a warning so
that developers and users can at least notice. After so many years of
x86_64 having proper executable stack support it should not cause too
many problems.
Link: http://lkml.kernel.org/r/20191208171918.GC19716@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Will Deacon <will@kernel.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
The variable inode may be NULL in reiserfs_insert_item(), but there is
no check before accessing the member of inode.
Fix this by adding NULL pointer check before calling reiserfs_debug().
Link: http://lkml.kernel.org/r/79c5135d-ff25-1cc9-4e99-9f572b88cc00@huawei.com
Signed-off-by: Yunfeng Ye <yeyunfeng@huawei.com>
Cc: zhengbin <zhengbin13@huawei.com>
Cc: Hu Shiyuan <hushiyuan@huawei.com>
Cc: Feilong Lin <linfeilong@huawei.com>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
protection" message
This message leads to thinking that memory protection is not implemented
for the said architecture, whereas absence of CONFIG_STRICT_KERNEL_RWX
only means that memory protection has not been selected at compile time.
Don't print this message when CONFIG_ARCH_HAS_STRICT_KERNEL_RWX is
selected by the architecture. Instead, print "Kernel memory protection
not selected by kernel config."
Link: http://lkml.kernel.org/r/62477e446d9685459d4f27d193af6ff1bd69d55f.1578557581.git.christophe.leroy@c-s.fr
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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|
Patch series "init/main.c: minor cleanup/bugfix of envvar handling", v2.
unknown_bootoption passes unrecognized command line arguments to init as
either environment variables or arguments. Some of the logic in the
function is broken for quoted command line arguments.
When an argument of the form param="value" is processed by parse_args
and passed to unknown_bootoption, the command line has
param\0"value\0
with val pointing to the beginning of value. The helper function
repair_env_string is then used to restore the '=' character that was
removed by parse_args, and strip the quotes off fully. This results in
param=value\0\0
and val ends up pointing to the 'a' instead of the 'v' in value. This
bug was introduced when repair_env_string was refactored into a separate
function, and the decrement of val in repair_env_string became dead
code.
This causes two problems in unknown_bootoption in the two places where
the val pointer is used as a substitute for the length of param:
1. An argument of the form param=".value" is misinterpreted as a
potential module parameter, with the result that it will not be
placed in init's environment.
2. An argument of the form param="value" is checked to see if param is
an existing environment variable that should be overwritten, but the
comparison is off-by-one and compares 'param=v' instead of 'param='
against the existing environment. So passing, for example,
TERM="vt100" on the command line results in init being passed both
TERM=linux and TERM=vt100 in its environment.
Patch 1 adds logging for the arguments and environment passed to init
and is independent of the rest: it can be dropped if this is
unnecessarily verbose.
Patch 2 removes repair_env_string from initcall parameter parsing in
do_initcall_level, as that uses a separate copy of the command line now
and the repairing is no longer necessary.
Patch 3 fixes the bug in unknown_bootoption by recording the length of
param explicitly instead of implying it from val-param.
This patch (of 3):
Commit a99cd1125189 ("init: fix bug where environment vars can't be
passed via boot args") introduced two minor bugs in unknown_bootoption
by factoring out the quoted value handling into a separate function.
When value is quoted, repair_env_string will move the value up 1 byte to
strip the quotes, so val in unknown_bootoption no longer points to the
actual location of the value.
The result is that an argument of the form param=".value" is mistakenly
treated as a potential module parameter and is not placed in init's
environment, and an argument of the form param="value" can result in a
duplicate environment variable: eg TERM="vt100" on the command line will
result in both TERM=linux and TERM=vt100 being placed into init's
environment.
Fix this by recording the length of the param before calling
repair_env_string instead of relying on val.
Link: http://lkml.kernel.org/r/20191212180023.24339-4-nivedita@alum.mit.edu
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Krzysztof Mazur <krzysiek@podlesie.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Since commit 08746a65c296 ("init: fix in-place parameter modification
regression"), parse_args in do_initcall_level is called on a copy of
saved_command_line. It is unnecessary to call repair_env_string during
this parsing, as this copy is not used for anything later.
Remove the now unnecessary arguments from repair_env_string as well.
Link: http://lkml.kernel.org/r/20191212180023.24339-3-nivedita@alum.mit.edu
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Cc: Krzysztof Mazur <krzysiek@podlesie.net>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Extend logging in `run_init_process` to also show the arguments and
environment that we are passing to init.
Link: http://lkml.kernel.org/r/20191212180023.24339-2-nivedita@alum.mit.edu
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Krzysztof Mazur <krzysiek@podlesie.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Unmapping whole address space at once with
munmap(0, (1ULL<<47) - 4096)
or equivalent will create empty coredump.
It is silly way to exit, however registers content may still be useful.
The right to coredump is fundamental right of a process!
Link: http://lkml.kernel.org/r/20191222150137.GA1277@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
array_size() macro will do overflow check anyway.
Link: http://lkml.kernel.org/r/20191222144009.GB24341@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Comment says ELF header is "too large to be on stack". 64 bytes on
64-bit is not large by any means.
Link: http://lkml.kernel.org/r/20191222143850.GA24341@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
If some mapping goes past TASK_SIZE it will be rejected by kernel which
means no such userspace binaries exist.
Mark every such check as unlikely.
Link: http://lkml.kernel.org/r/20191215124355.GA21124@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
"current->mm" pointer is stable in general except few cases one of which
execve(2). Compiler can't treat is as stable but it _is_ stable most of
the time. During ELF loading process ->mm becomes stable right after
flush_old_exec().
Help compiler by caching current->mm, otherwise it continues to refetch
it.
add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-141 (-141)
Function old new delta
elf_core_dump 5062 5039 -23
load_elf_binary 5426 5308 -118
Note: other cases are left as is because it is either pessimisation or
no change in binary size.
Link: http://lkml.kernel.org/r/20191215124755.GB21124@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
ELF header is read into bprm->buf[] by generic execve code.
Save a memcpy and allocate just one header for the interpreter instead
of two headers (64 bytes instead of 128 on 64-bit).
Link: http://lkml.kernel.org/r/20191208171242.GA19716@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Only executable segments should be accounted to ->start_code just like
they do to ->end_code (correctly).
Link: http://lkml.kernel.org/r/20191208171410.GB19716@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Filling auxv vector as array with index (auxv[i++] = ...) generates
terrible code. "saved_auxv" should be reworked because it is the worst
member of mm_struct by size/usefullness ratio but do it later.
Meanwhile help gcc a little with *auxv++ idiom.
Space savings on x86_64:
add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-127 (-127)
Function old new delta
load_elf_binary 5470 5343 -127
Link: http://lkml.kernel.org/r/20191208172301.GD19716@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
It saves 25% of .text for arm64, and more for BE architectures.
Before:
$ size lib/find_bit.o
text data bss dec hex filename
1012 56 0 1068 42c lib/find_bit.o
After:
$ size lib/find_bit.o
text data bss dec hex filename
776 56 0 832 340 lib/find_bit.o
Link: http://lkml.kernel.org/r/20200103202846.21616-3-yury.norov@gmail.com
Signed-off-by: Yury Norov <yury.norov@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Allison Randal <allison@lohutok.net>
Cc: William Breathitt Gray <vilhelm.gray@gmail.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
_find_next_bit and _find_next_bit_le are very similar functions. It's
possible to join them by adding 1 parameter and a couple of simple
checks. It's simplify maintenance and make possible to shrink the size
of .text by un-inlining the unified function (in the following patch).
Link: http://lkml.kernel.org/r/20200103202846.21616-2-yury.norov@gmail.com
Signed-off-by: Yury Norov <yury.norov@gmail.com>
Cc: Allison Randal <allison@lohutok.net>
Cc: Joe Perches <joe@perches.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
ext2_swab() is defined locally in lib/find_bit.c However it is not
specific to ext2, neither to bitmaps.
There are many potential users of it, so rename it to just swab() and
move to include/uapi/linux/swab.h
ABI guarantees that size of unsigned long corresponds to BITS_PER_LONG,
therefore drop unneeded cast.
Link: http://lkml.kernel.org/r/20200103202846.21616-1-yury.norov@gmail.com
Signed-off-by: Yury Norov <yury.norov@gmail.com>
Cc: Allison Randal <allison@lohutok.net>
Cc: Joe Perches <joe@perches.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Clang warns:
../lib/scatterlist.c:314:5: warning: misleading indentation; statement
is not part of the previous 'if' [-Wmisleading-indentation]
return -ENOMEM;
^
../lib/scatterlist.c:311:4: note: previous statement is here
if (prv)
^
1 warning generated.
This warning occurs because there is a space before the tab on this
line. Remove it so that the indentation is consistent with the Linux
kernel coding style and clang no longer warns.
Link: http://lkml.kernel.org/r/20191218033606.11942-1-natechancellor@gmail.com
Link: https://github.com/ClangBuiltLinux/linux/issues/830
Fixes: edce6820a9fd ("scatterlist: prevent invalid free when alloc fails")
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
In order to benefit from s390 zlib hardware compression support,
increase the btrfs zlib workspace buffer size from 1 to 4 pages (if s390
zlib hardware support is enabled on the machine).
This brings up to 60% better performance in hardware on s390 compared to
the PAGE_SIZE buffer and much more compared to the software zlib
processing in btrfs. In case of memory pressure, fall back to a single
page buffer during workspace allocation.
The data compressed with larger input buffers will still conform to zlib
standard and thus can be decompressed also on a systems that uses only
PAGE_SIZE buffer for btrfs zlib.
Link: http://lkml.kernel.org/r/20200108105103.29028-1-zaslonko@linux.ibm.com
Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Cc: Chris Mason <clm@fb.com>
Cc: Josef Bacik <josef@toxicpanda.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Eduard Shishkin <edward6@linux.ibm.com>
Cc: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Add a new function to zlib.h checking if s390 Deflate-Conversion
facility is installed and enabled.
Link: http://lkml.kernel.org/r/20200103223334.20669-6-zaslonko@linux.ibm.com
Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Cc: Chris Mason <clm@fb.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Eduard Shishkin <edward6@linux.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ilya Leoshkevich <iii@linux.ibm.com>
Cc: Josef Bacik <josef@toxicpanda.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Add the new kernel command line parameter 'dfltcc=' to configure s390
zlib hardware support.
Format: { on | off | def_only | inf_only | always }
on: s390 zlib hardware support for compression on
level 1 and decompression (default)
off: No s390 zlib hardware support
def_only: s390 zlib hardware support for deflate
only (compression on level 1)
inf_only: s390 zlib hardware support for inflate
only (decompression)
always: Same as 'on' but ignores the selected compression
level always using hardware support (used for debugging)
Link: http://lkml.kernel.org/r/20200103223334.20669-5-zaslonko@linux.ibm.com
Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Cc: Chris Mason <clm@fb.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Eduard Shishkin <edward6@linux.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ilya Leoshkevich <iii@linux.ibm.com>
Cc: Josef Bacik <josef@toxicpanda.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
