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commit cff549e4860f ("scsi: proper state checking and module refcount
handling in scsi_device_get") the reference count of scsi device was
changed, which could lead to when rmmod with at least on drive attached,
SCSI error handle will run into infinite loop, and lockup the system.
Fix it by remove scsi host first, this way scsi core will not send
commands down after detaching SAS transport.
This is a follow up fix for Benjamin's fix for pm80xx.
See also:
http://www.spinics.net/lists/linux-scsi/msg90088.html
Signed-off-by: Jack Wang <jinpu.wang@profitbricks.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2
Pull nios2 updates from Ley Foon Tan:
- nios2: Remove unnecessary #ifdef guards
- nios2: Switch to generic __xchg()
- nios2: Fix unused variable warning
* tag 'nios2-v4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2:
nios2: Remove unnecessary #ifdef guards
nios2: Switch to generic __xchg()
nios2: Fix unused variable warning
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commit cff549e4860f ("scsi: proper state checking and module refcount
handling in scsi_device_get") , the reference count of scsi device was
changed, which could lead to when rmmod with at least on drive attached,
SCSI error handle will run into infinite loop, and lockup the system.
Fix it by remove scsi host first, this way scsi core will not send
commands down after detaching SAS transport.
This is a follow up fix for Benjamin's fix for pm80xx.
See also:
http://www.spinics.net/lists/linux-scsi/msg90088.html
Signed-off-by: Jack Wang <jinpu.wang@profitbricks.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Merging in the few patches I had kept separate from main next/dt, since others
got merged here directly.
* next/arm64:
arm64: defconfig: Enable PCI generic host bridge by default
arm64: Juno: Add support for the PCIe host bridge on Juno R1
Documentation: of: Document the bindings used by Juno R1 PCIe host bridge
arm64: dts: mt8173: Add clocks for SCPSYS unit
arm64: dts: mt8173: Add subsystem clock controller device nodes
+ Linux 4.3-rc5
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Unregister and reregister BDI devices in the proper order. This patch
avoids that the following kernel warning can get triggered:
WARNING: CPU: 7 PID: 203 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x68/0x80()
sysfs: cannot create duplicate filename '/devices/virtual/bdi/8:32'
Workqueue: events_unbound async_run_entry_fn
Call Trace:
[<ffffffff814ff5a4>] dump_stack+0x4c/0x65
[<ffffffff810746ba>] warn_slowpath_common+0x8a/0xc0
[<ffffffff81074736>] warn_slowpath_fmt+0x46/0x50
[<ffffffff81237ca8>] sysfs_warn_dup+0x68/0x80
[<ffffffff81237d8e>] sysfs_create_dir_ns+0x7e/0x90
[<ffffffff81291f58>] kobject_add_internal+0xa8/0x320
[<ffffffff812923a0>] kobject_add+0x60/0xb0
[<ffffffff8138c937>] device_add+0x107/0x5e0
[<ffffffff8138d018>] device_create_groups_vargs+0xd8/0x100
[<ffffffff8138d05c>] device_create_vargs+0x1c/0x20
[<ffffffff8117f233>] bdi_register+0x63/0x2a0
[<ffffffff8117f497>] bdi_register_dev+0x27/0x30
[<ffffffff81281549>] add_disk+0x1a9/0x4e0
[<ffffffffa00c5739>] sd_probe_async+0x119/0x1d0 [sd_mod]
[<ffffffff8109a81a>] async_run_entry_fn+0x4a/0x140
[<ffffffff81091078>] process_one_work+0x1d8/0x7c0
[<ffffffff81091774>] worker_thread+0x114/0x460
[<ffffffff81097878>] kthread+0xf8/0x110
[<ffffffff8150801f>] ret_from_fork+0x3f/0x70
See also patch "block: destroy bdi before blockdev is unregistered"
(commit ID 6cd18e711dd8).
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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Signed-off-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Reviewed-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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We have been getting a warning about non ANSI function.
warning: non-ANSI function declaration of function 'FPT_SccbMgrTableInitAll'
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Acked-by: Khalid Aziz <khalid@gonehiking.org>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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Pull xtensa updates from Chris Zankel:
- fix remaining issues with noMMU cores
- fix build for cores w/o cache or zero overhead loop options
- fix boot of secondary cores in SMP configuration
- add support for DMA to high memory pages
- add dma_to_phys and phys_to_dma functions.
* tag 'xtensa-20151108' of git://github.com/czankel/xtensa-linux:
xtensa: implement dma_to_phys and phys_to_dma
xtensa: support DMA to high memory
Revert "xtensa: cache inquiry and unaligned cache handling functions"
xtensa: drop unused sections and remapped reset handlers
xtensa: fix secondary core boot in SMP
xtensa: add FORCE_MAX_ZONEORDER to Kconfig
xtensa: nommu: provide defconfig for de212 on kc705
xtensa: nommu: xtfpga: add kc705 DTS
xtensa: add de212 core variant
xtensa: nommu: select HAVE_FUTEX_CMPXCHG
xtensa: nommu: fix default memory start address
xtensa: nommu: provide correct KIO addresses
xtensa: nommu: fix USER_RING definition
xtensa: xtfpga: fix integer overflow in TASK_SIZE
xtensa: fix build for configs without cache options
xtensa: fixes for configs without loop option
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Some new adapters require a special Configure Cache Parameters command
to enable the adapter write cache, so send this during the adapter
initialization if the adapter requires it.
Signed-off-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Reviewed-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Add an IOA Inquiry command for Page 0xC4 during IOA initialization to
collect cache capabilities, particularly to check if Sync IOA Write
Cache is supported.
Inquiry will happen right after Cap Inquiry on page 0xD0; and will
execute only if the "Supported Pages" field in Inquiry Page 0x0 shows
support for Page 0xC4. Otherwise, assume Sync IOA Write Cache is
not supported.
Signed-off-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Reviewed-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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According to the IPR specification, Inhibit Underlength Checking bit
must be disabled when issuing commands to vsets. Enabling it in this
case might cause SCSI commands to fail with an Illegal Request, so make
sure we keep this bit cleared when resource is a vset.
Signed-off-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com>
Reviewed-by: Manoj Kumar <manoj@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Reviewed-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Add a holding pattern prior to collecting dump data, to wait for the IOA
indication that the Mailbox register is stable and won't change without
an explicit reset. This ensures we'll be collecting meaningful dump
data, even when dumping right after an adapter reset.
In the event of a timeout, we still force the dump, since a partial dump
still might be useful.
Signed-off-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Reviewed-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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SRB status can have additional information. Mask these out before processing
SRB status.
This patch was sent as part of a collection of patches more than a year ago.
While the rest of the patches in the set were comitted, this patch was not.
I woulod like to thank Olaf for noticing that this patch was not committed
upstream.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Long Li <longli@microsoft.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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Storvsc driver needs to ensure there are no 'holes' in the presented
sg list (all segments in the middle of the list need to be of PAGE_SIZE).
When a hole is detected storvsc driver creates a 'bounce sgl' without
holes and copies data over with copy_{to,from}_bounce_buffer() functions.
Setting virt_boundary_mask to PAGE_SIZE - 1 guarantees we'll never see
such holes so we can significantly simplify the driver. This is also
supposed to bring us some performance improvement for certain workloads
as we eliminate copying.
Reported-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Tested-by: Alex Ng <alexng@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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Don't set the SRB_FLAGS_QUEUE_ACTION_ENABLE flag since we are not specifying
tags. Without this, the qlogic driver doesn't work properly with storvsc.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Cc: stable@vger.kernel.org
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68knommu/coldfire fix from Greg Ungerer:
"Only a single patch, fixes brk area setup problem in nommu
environments"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
fs/binfmt_elf_fdpic.c: fix brk area overlap with stack on NOMMU
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Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Murthy Bhat <Murthy.Bhat@pmcs.com>
Reviewed-by: Karthikeya Sunkesula <Karthikeya.Sunkesula@pmcs.com>
Signed-off-by: Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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As pci_enable_msix() deprecated, replaced with pci_enable_msix_range()
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Murthy Bhat <Murthy.Bhat@pmcs.com>
Reviewed-by: Karthikeya Sunkesula <Karthikeya.Sunkesula@pmcs.com>
Signed-off-by: Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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Driver blocks ioctls once it received shutdown/suspend request during
suspend/hybernation. This patch unblocks ioctls on resume path.
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Murthy Bhat <Murthy.Bhat@pmcs.com>
Reviewed-by: Karthikeya Sunkesula <Karthikeya.Sunkesula@pmcs.com>
Signed-off-by: Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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Reset irq affinity hints before releasing IRQ.
Removed duplicate code of IRQ acquire/release.
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Murthy Bhat <Murthy.Bhat@pmcs.com>
Reviewed-by: Karthikeya Sunkesula <Karthikeya.Sunkesula@pmcs.com>
Signed-off-by: Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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If 'IsFastPath' bit is set, then response path assumes no error and skips
error check.
Reviewed-by: Murthy Bhat <Murthy.Bhat@pmcs.com>
Reviewed-by: Karthikeya Sunkesula <Karthikeya.Sunkesula@pmcs.com>
Signed-off-by: Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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If writeq() not supported, then do atomic two 32bit write
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Murthy Bhat <Murthy.Bhat@pmcs.com>
Reviewed-by: Karthikeya Sunkesula <Karthikeya.Sunkesula@pmcs.com>
Signed-off-by: Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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This change always sets MSI interrupt mode for series-6 controller.
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Murthy Bhat <Murthy.Bhat@pmcs.com>
Reviewed-by: Karthikeya Sunkesula <Karthikeya.Sunkesula@pmcs.com>
Signed-off-by: Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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* .suspend() and .resume() routines implemented in the driver
* aac_release_resources() initiates firmware shutdown
* aac_acquire_resources re-initializes the host interface
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Murthy Bhat <Murthy.Bhat@pmcs.com>
Reviewed-by: Karthikeya Sunkesula <Karthikeya.Sunkesula@pmcs.com>
Signed-off-by: Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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Driver sends the right size of the response buffer.
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Murthy Bhat <Murthy.Bhat@pmcs.com>
Reviewed-by: Karthikeya Sunkesula <Karthikeya.Sunkesula@pmcs.com>
Signed-off-by: Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux
Pull module updates from Rusty Russell:
"Nothing exciting, minor tweaks and cleanups"
* tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
scripts: [modpost] add new sections to white list
modpost: Add flag -E for making section mismatches fatal
params: don't ignore the rest of cmdline if parse_one() fails
modpost: abort if a module symbol is too long
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Signed-off-by: John Soni Jose <sony.john@avagotech.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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While posting WRB the next_pointer of the current WRB should point
to itself and the previous WRB next_pointer should point to the
current WRB.
The next pointer value was retrieved during alloc_pdu and was updated
in wrb before ringing the doorbell. The fix retrieves the
next_pointer just before ringing the doorbell and updates in the WRB.
Signed-off-by: John Soni Jose <sony.john@avagotech.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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The ELF binary loader in binfmt_elf.c requires an MMU, making it
impossible to use regular ELF binaries on NOMMU archs. However, the FDPIC
ELF loader in binfmt_elf_fdpic.c is fully capable as a loader for plain
ELF, which requires constant displacements between LOAD segments, since it
already supports FDPIC ELF files flagged as needing constant displacement.
This patch adjusts the FDPIC ELF loader to accept non-FDPIC ELF files on
NOMMU archs. They are treated identically to FDPIC ELF files with the
constant-displacement flag bit set, except for personality, which must
match the ABI of the program being loaded; the PER_LINUX_FDPIC personality
controls how the kernel interprets function pointers passed to sigaction.
Files that do not set a stack size requirement explicitly are given a
default stack size (matching the amount of committed stack the normal ELF
loader for MMU archs would give them) rather than being rejected; this is
necessary because plain ELF files generally do not declare stack
requirements in theit program headers.
Only ET_DYN (PIE) format ELF files are supported, since loading at a fixed
virtual address is not possible on NOMMU.
This patch was developed and tested on J2 (SH2-compatible) but should
be usable immediately on all archs where binfmt_elf_fdpic is
available. Moreover, by providing dummy definitions of the
elf_check_fdpic() and elf_check_const_displacement() macros for archs
which lack an FDPIC ABI, it should be possible to enable building of
binfmt_elf_fdpic on all other NOMMU archs and thereby give them ELF
binary support, but I have not yet tested this.
The motivation for using binfmt_elf_fdpic.c rather than adapting
binfmt_elf.c to NOMMU is that the former already has all the necessary
code to work properly on NOMMU and has already received widespread
real-world use and testing. I hope this is not controversial.
I'm not really happy with having to unset the FDPIC_FUNCPTRS
personality bit when loading non-FDPIC ELF. This bit should really
reset automatically on execve, since otherwise, executing non-ELF
binaries (e.g. bFLT) from an FDPIC process will leave the personality
in the wrong state and severely break signal handling. But that's a
separate, existing bug and I don't know the right place to fix it.
Signed-off-by: Rich Felker <dalias@libc.org>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Matt Mackall <mpm@selenic.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: David Howells <dhowells@redhat.com>
Cc: Oleg Endo <oleg.endo@t-online.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed. Remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed. Remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed. Remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed. Remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Petr Vandrovec <petr@vandrovec.name>
Cc: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@fb.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() checks are not
needed. Remove them.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Acked-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed. Remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed. Remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Changman Lee <cm224.lee@samsung.com>
Cc: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed. Remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Jan Kara <jack@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed. Remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Acked-by: Boaz Harrosh <ooo@electrozaur.com>
Cc: Benny Halevy <bhalevy@primarydata.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed. Remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Chris Mason <clm@fb.com>
Cc: Josef Bacik <jbacik@fb.com>
Acked-by: David Sterba <dsterba@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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new_valid_dev() always returns 1, so the !new_valid_dev() check is not
needed. Remove it.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Eric Van Hensbergen <ericvh@gmail.com>
Cc: Ron Minnich <rminnich@sandia.gov>
Cc: Latchesar Ionkov <lucho@ionkov.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Make old/new_valid_dev return bool due to these two particular functions
only using either one or zero as their return value.
No functional change.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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There's no user of huge_valid_dev() any more, so remove it.
No functional change.
Signed-off-by: Yaowei Bai <bywxiaobai@163.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Removal started in commit 5bbeed12bdc3 ("sparc32: drop unused
kmap_atomic_to_page"). Let's do it across the whole tree.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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EXTRA_CFLAGS are intended to be used on the command line, not by Kbuild.
In case of cxgbi drivers, use of EXTRA_CFLAGS results in a compilation
failure:
drivers/scsi/cxgbi/cxgb4i/cxgb4i.c:24:21: fatal error: t4_regs.h: No such file or directory
when building like:
$ make drivers/scsi/cxgbi/ EXTRA_CFLAGS=-Wwhatever
Use ccflags-y instead of EXTRA_CFLAGS.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The origin document references to cap_vm_enough_memory is because
cap_vm_enough_memory invoked __vm_enough_memory before and it no longer
does now.
Signed-off-by: Chun Chen <ramichen@tencent.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Switch everything to the new and more capable implementation of abs().
Mainly to give the new abs() a bit of a workout.
Cc: Michal Nazarewicz <mina86@mina86.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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For 64-bit arguments, the abs macro casts it to an int which leads to
lost precision and may cause incorrect results. To deal with 64-bit
types abs64 macro has been introduced but still there are places where
abs macro is used incorrectly.
To deal with the problem, expand abs macro such that it operates on s64
type when dealing with 64-bit types while still returning long when
dealing with smaller types.
This fixes one known bug (per John):
The internal clocksteering done for fine-grained error correction uses a
: logarithmic approximation, so any time adjtimex() adjusts the clock
: steering, timekeeping_freqadjust() quickly approximates the correct clock
: frequency over a series of ticks.
:
: Unfortunately, the logic in timekeeping_freqadjust(), introduced in commit
: dc491596f639438 (Rework frequency adjustments to work better w/ nohz),
: used the abs() function with a s64 error value to calculate the size of
: the approximated adjustment to be made.
:
: Per include/linux/kernel.h: "abs() should not be used for 64-bit types
: (s64, u64, long long) - use abs64()".
:
: Thus on 32-bit platforms, this resulted in the clocksteering to take a
: quite dampended random walk trying to converge on the proper frequency,
: which caused the adjustments to be made much slower then intended (most
: easily observed when large adjustments are made).
Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Reported-by: John Stultz <john.stultz@linaro.org>
Tested-by: John Stultz <john.stultz@linaro.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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