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Merge branch 'akpm' (patches from Andrew) 

Merge first patchbomb from Andrew Morton:

 - a few misc things

 - ocfs2 udpates

 - kernel/watchdog.c feature work (took ages to get right)

 - most of MM.  A few tricky bits are held up and probably won't make 4.2.

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (91 commits)
  mm: kmemleak_alloc_percpu() should follow the gfp from per_alloc()
  mm, thp: respect MPOL_PREFERRED policy with non-local node
  tmpfs: truncate prealloc blocks past i_size
  mm/memory hotplug: print the last vmemmap region at the end of hot add memory
  mm/mmap.c: optimization of do_mmap_pgoff function
  mm: kmemleak: optimise kmemleak_lock acquiring during kmemleak_scan
  mm: kmemleak: avoid deadlock on the kmemleak object insertion error path
  mm: kmemleak: do not acquire scan_mutex in kmemleak_do_cleanup()
  mm: kmemleak: fix delete_object_*() race when called on the same memory block
  mm: kmemleak: allow safe memory scanning during kmemleak disabling
  memcg: convert mem_cgroup->under_oom from atomic_t to int
  memcg: remove unused mem_cgroup->oom_wakeups
  frontswap: allow multiple backends
  x86, mirror: x86 enabling - find mirrored memory ranges
  mm/memblock: allocate boot time data structures from mirrored memory
  mm/memblock: add extra "flags" to memblock to allow selection of memory based on attribute
  mm: do not ignore mapping_gfp_mask in page cache allocation paths
  mm/cma.c: fix typos in comments
  mm/oom_kill.c: print points as unsigned int
  mm/hugetlb: handle races in alloc_huge_page and hugetlb_reserve_pages
  ...
This commit is contained in:
Linus Torvalds 2015-06-24 20:47:21 -07:00
parent 266da6f142 8a8c35fadf
commit aefbef10e3
151 changed files with 2281 additions and 1325 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
Documentation/lockup-watchdogs.txt
View File

@ -61,3 +61,21 @@ As explained above, a kernel knob is provided that allows
administrators to configure the period of the hrtimer and the perf
event. The right value for a particular environment is a trade-off
between fast response to lockups and detection overhead.
By default, the watchdog runs on all online cores. However, on a
kernel configured with NO_HZ_FULL, by default the watchdog runs only
on the housekeeping cores, not the cores specified in the "nohz_full"
boot argument. If we allowed the watchdog to run by default on
the "nohz_full" cores, we would have to run timer ticks to activate
the scheduler, which would prevent the "nohz_full" functionality
from protecting the user code on those cores from the kernel.
Of course, disabling it by default on the nohz_full cores means that
when those cores do enter the kernel, by default we will not be
able to detect if they lock up. However, allowing the watchdog
to continue to run on the housekeeping (non-tickless) cores means
that we will continue to detect lockups properly on those cores.
In either case, the set of cores excluded from running the watchdog
may be adjusted via the kernel.watchdog_cpumask sysctl. For
nohz_full cores, this may be useful for debugging a case where the
kernel seems to be hanging on the nohz_full cores.

21
Documentation/sysctl/kernel.txt
View File

@ -923,6 +923,27 @@ and nmi_watchdog.
==============================================================
watchdog_cpumask:
This value can be used to control on which cpus the watchdog may run.
The default cpumask is all possible cores, but if NO_HZ_FULL is
enabled in the kernel config, and cores are specified with the
nohz_full= boot argument, those cores are excluded by default.
Offline cores can be included in this mask, and if the core is later
brought online, the watchdog will be started based on the mask value.
Typically this value would only be touched in the nohz_full case
to re-enable cores that by default were not running the watchdog,
if a kernel lockup was suspected on those cores.
The argument value is the standard cpulist format for cpumasks,
so for example to enable the watchdog on cores 0, 2, 3, and 4 you
might say:
echo 0,2-4 > /proc/sys/kernel/watchdog_cpumask
==============================================================
watchdog_thresh:
This value can be used to control the frequency of hrtimer and NMI

8
Documentation/vm/unevictable-lru.txt
View File

@ -467,7 +467,13 @@ mmap(MAP_LOCKED) SYSTEM CALL HANDLING
In addition the mlock()/mlockall() system calls, an application can request
that a region of memory be mlocked supplying the MAP_LOCKED flag to the mmap()
call. Furthermore, any mmap() call or brk() call that expands the heap by a
call. There is one important and subtle difference here, though. mmap() + mlock()
will fail if the range cannot be faulted in (e.g. because mm_populate fails)
and returns with ENOMEM while mmap(MAP_LOCKED) will not fail. The mmaped
area will still have properties of the locked area - aka. pages will not get
swapped out - but major page faults to fault memory in might still happen.
Furthermore, any mmap() call or brk() call that expands the heap by a
task that has previously called mlockall() with the MCL_FUTURE flag will result
in the newly mapped memory being mlocked. Before the unevictable/mlock
changes, the kernel simply called make_pages_present() to allocate pages and

15
arch/alpha/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_ALPHA_MM_ARCH_HOOKS_H
#define _ASM_ALPHA_MM_ARCH_HOOKS_H
#endif /* _ASM_ALPHA_MM_ARCH_HOOKS_H */

15
arch/arc/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_ARC_MM_ARCH_HOOKS_H
#define _ASM_ARC_MM_ARCH_HOOKS_H
#endif /* _ASM_ARC_MM_ARCH_HOOKS_H */

4
arch/arm/include/asm/hugetlb.h
View File

@ -53,10 +53,6 @@ static inline int prepare_hugepage_range(struct file *file,
return 0;
}
static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm)
{
}
static inline int huge_pte_none(pte_t pte)
{
return pte_none(pte);

15
arch/arm/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_ARM_MM_ARCH_HOOKS_H
#define _ASM_ARM_MM_ARCH_HOOKS_H
#endif /* _ASM_ARM_MM_ARCH_HOOKS_H */

5
arch/arm/mm/hugetlbpage.c
View File

@ -41,11 +41,6 @@ int pud_huge(pud_t pud)
return 0;
}
int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep)
{
return 0;
}
int pmd_huge(pmd_t pmd)
{
return pmd_val(pmd) && !(pmd_val(pmd) & PMD_TABLE_BIT);

4
arch/arm64/include/asm/hugetlb.h
View File

@ -86,10 +86,6 @@ static inline int prepare_hugepage_range(struct file *file,
return 0;
}
static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm)
{
}
static inline int huge_pte_none(pte_t pte)
{
return pte_none(pte);

15
arch/arm64/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_ARM64_MM_ARCH_HOOKS_H
#define _ASM_ARM64_MM_ARCH_HOOKS_H
#endif /* _ASM_ARM64_MM_ARCH_HOOKS_H */

7
arch/arm64/mm/hugetlbpage.c
View File

@ -31,13 +31,6 @@
#include <asm/tlbflush.h>
#include <asm/pgalloc.h>
#ifndef CONFIG_ARCH_WANT_HUGE_PMD_SHARE
int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep)
{
return 0;
}
#endif
int pmd_huge(pmd_t pmd)
{
return !(pmd_val(pmd) & PMD_TABLE_BIT);

15
arch/avr32/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_AVR32_MM_ARCH_HOOKS_H
#define _ASM_AVR32_MM_ARCH_HOOKS_H
#endif /* _ASM_AVR32_MM_ARCH_HOOKS_H */

15
arch/blackfin/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_BLACKFIN_MM_ARCH_HOOKS_H
#define _ASM_BLACKFIN_MM_ARCH_HOOKS_H
#endif /* _ASM_BLACKFIN_MM_ARCH_HOOKS_H */

15
arch/c6x/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_C6X_MM_ARCH_HOOKS_H
#define _ASM_C6X_MM_ARCH_HOOKS_H
#endif /* _ASM_C6X_MM_ARCH_HOOKS_H */

15
arch/cris/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_CRIS_MM_ARCH_HOOKS_H
#define _ASM_CRIS_MM_ARCH_HOOKS_H
#endif /* _ASM_CRIS_MM_ARCH_HOOKS_H */

15
arch/frv/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_FRV_MM_ARCH_HOOKS_H
#define _ASM_FRV_MM_ARCH_HOOKS_H
#endif /* _ASM_FRV_MM_ARCH_HOOKS_H */

15
arch/hexagon/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_HEXAGON_MM_ARCH_HOOKS_H
#define _ASM_HEXAGON_MM_ARCH_HOOKS_H
#endif /* _ASM_HEXAGON_MM_ARCH_HOOKS_H */

4
arch/ia64/include/asm/hugetlb.h
View File

@ -20,10 +20,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
REGION_NUMBER((addr)+(len)-1) == RGN_HPAGE);
}
static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm)
{
}
static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte)
{

15
arch/ia64/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_IA64_MM_ARCH_HOOKS_H
#define _ASM_IA64_MM_ARCH_HOOKS_H
#endif /* _ASM_IA64_MM_ARCH_HOOKS_H */

5
arch/ia64/mm/hugetlbpage.c
View File

@ -65,11 +65,6 @@ huge_pte_offset (struct mm_struct *mm, unsigned long addr)
return pte;
}
int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep)
{
return 0;
}
#define mk_pte_huge(entry) { pte_val(entry) |= _PAGE_P; }
/*

15
arch/m32r/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_M32R_MM_ARCH_HOOKS_H
#define _ASM_M32R_MM_ARCH_HOOKS_H
#endif /* _ASM_M32R_MM_ARCH_HOOKS_H */

15
arch/m68k/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_M68K_MM_ARCH_HOOKS_H
#define _ASM_M68K_MM_ARCH_HOOKS_H
#endif /* _ASM_M68K_MM_ARCH_HOOKS_H */

14
arch/metag/include/asm/dma-mapping.h
View File

@ -134,20 +134,24 @@ dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
}
static inline void
dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sglist, int nelems,
enum dma_data_direction direction)
{
int i;
for (i = 0; i < nelems; i++, sg++)
struct scatterlist *sg;
for_each_sg(sglist, sg, nelems, i)
dma_sync_for_cpu(sg_virt(sg), sg->length, direction);
}
static inline void
dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
enum dma_data_direction direction)
dma_sync_sg_for_device(struct device *dev, struct scatterlist *sglist,
int nelems, enum dma_data_direction direction)
{
int i;
for (i = 0; i < nelems; i++, sg++)
struct scatterlist *sg;
for_each_sg(sglist, sg, nelems, i)
dma_sync_for_device(sg_virt(sg), sg->length, direction);
}

4
arch/metag/include/asm/hugetlb.h
View File

@ -14,10 +14,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
int prepare_hugepage_range(struct file *file, unsigned long addr,
unsigned long len);
static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm)
{
}
static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
unsigned long addr, unsigned long end,
unsigned long floor,

15
arch/metag/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_METAG_MM_ARCH_HOOKS_H
#define _ASM_METAG_MM_ARCH_HOOKS_H
#endif /* _ASM_METAG_MM_ARCH_HOOKS_H */

5
arch/metag/mm/hugetlbpage.c
View File

@ -89,11 +89,6 @@ pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr)
return pte;
}
int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep)
{
return 0;
}
int pmd_huge(pmd_t pmd)
{
return pmd_page_shift(pmd) > PAGE_SHIFT;

15
arch/microblaze/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_MICROBLAZE_MM_ARCH_HOOKS_H
#define _ASM_MICROBLAZE_MM_ARCH_HOOKS_H
#endif /* _ASM_MICROBLAZE_MM_ARCH_HOOKS_H */

4
arch/mips/include/asm/hugetlb.h
View File

@ -38,10 +38,6 @@ static inline int prepare_hugepage_range(struct file *file,
return 0;
}
static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm)
{
}
static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
unsigned long addr,
unsigned long end,

15
arch/mips/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_MIPS_MM_ARCH_HOOKS_H
#define _ASM_MIPS_MM_ARCH_HOOKS_H
#endif /* _ASM_MIPS_MM_ARCH_HOOKS_H */

6
arch/mips/include/asm/pgtable.h
View File

@ -568,11 +568,11 @@ static inline pmd_t pmd_mknotpresent(pmd_t pmd)
}
/*
* The generic version pmdp_get_and_clear uses a version of pmd_clear() with a
* The generic version pmdp_huge_get_and_clear uses a version of pmd_clear() with a
* different prototype.
*/
#define __HAVE_ARCH_PMDP_GET_AND_CLEAR
static inline pmd_t pmdp_get_and_clear(struct mm_struct *mm,
#define __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR
static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
unsigned long address, pmd_t *pmdp)
{
pmd_t old = *pmdp;

5
arch/mips/mm/hugetlbpage.c
View File

@ -51,11 +51,6 @@ pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr)
return (pte_t *) pmd;
}
int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep)
{
return 0;
}
/*
* This function checks for proper alignment of input addr and len parameters.
*/

15
arch/mn10300/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_MN10300_MM_ARCH_HOOKS_H
#define _ASM_MN10300_MM_ARCH_HOOKS_H
#endif /* _ASM_MN10300_MM_ARCH_HOOKS_H */

15
arch/nios2/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_NIOS2_MM_ARCH_HOOKS_H
#define _ASM_NIOS2_MM_ARCH_HOOKS_H
#endif /* _ASM_NIOS2_MM_ARCH_HOOKS_H */

15
arch/openrisc/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_OPENRISC_MM_ARCH_HOOKS_H
#define _ASM_OPENRISC_MM_ARCH_HOOKS_H
#endif /* _ASM_OPENRISC_MM_ARCH_HOOKS_H */

15
arch/parisc/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_PARISC_MM_ARCH_HOOKS_H
#define _ASM_PARISC_MM_ARCH_HOOKS_H
#endif /* _ASM_PARISC_MM_ARCH_HOOKS_H */

27
arch/parisc/kernel/pci-dma.c
View File

@ -478,14 +478,16 @@ static void pa11_dma_unmap_single(struct device *dev, dma_addr_t dma_handle, siz
static int pa11_dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, enum dma_data_direction direction)
{
int i;
struct scatterlist *sg;
BUG_ON(direction == DMA_NONE);
for (i = 0; i < nents; i++, sglist++ ) {
unsigned long vaddr = (unsigned long)sg_virt(sglist);
sg_dma_address(sglist) = (dma_addr_t) virt_to_phys(vaddr);
sg_dma_len(sglist) = sglist->length;
flush_kernel_dcache_range(vaddr, sglist->length);
for_each_sg(sglist, sg, nents, i) {
unsigned long vaddr = (unsigned long)sg_virt(sg);
sg_dma_address(sg) = (dma_addr_t) virt_to_phys(vaddr);
sg_dma_len(sg) = sg->length;
flush_kernel_dcache_range(vaddr, sg->length);
}
return nents;
}
@ -493,6 +495,7 @@ static int pa11_dma_map_sg(struct device *dev, struct scatterlist *sglist, int n
static void pa11_dma_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents, enum dma_data_direction direction)
{
int i;
struct scatterlist *sg;
BUG_ON(direction == DMA_NONE);
@ -501,8 +504,8 @@ static void pa11_dma_unmap_sg(struct device *dev, struct scatterlist *sglist, in
/* once we do combining we'll need to use phys_to_virt(sg_dma_address(sglist)) */
for (i = 0; i < nents; i++, sglist++ )
flush_kernel_vmap_range(sg_virt(sglist), sglist->length);
for_each_sg(sglist, sg, nents, i)
flush_kernel_vmap_range(sg_virt(sg), sg->length);
return;
}
@ -523,21 +526,23 @@ static void pa11_dma_sync_single_for_device(struct device *dev, dma_addr_t dma_h
static void pa11_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sglist, int nents, enum dma_data_direction direction)
{
int i;
struct scatterlist *sg;
/* once we do combining we'll need to use phys_to_virt(sg_dma_address(sglist)) */
for (i = 0; i < nents; i++, sglist++ )
flush_kernel_vmap_range(sg_virt(sglist), sglist->length);
for_each_sg(sglist, sg, nents, i)
flush_kernel_vmap_range(sg_virt(sg), sg->length);
}
static void pa11_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sglist, int nents, enum dma_data_direction direction)
{
int i;
struct scatterlist *sg;
/* once we do combining we'll need to use phys_to_virt(sg_dma_address(sglist)) */
for (i = 0; i < nents; i++, sglist++ )
flush_kernel_vmap_range(sg_virt(sglist), sglist->length);
for_each_sg(sglist, sg, nents, i)
flush_kernel_vmap_range(sg_virt(sg), sg->length);
}
struct hppa_dma_ops pcxl_dma_ops = {

5
arch/powerpc/include/asm/hugetlb.h
View File

@ -112,11 +112,6 @@ static inline int prepare_hugepage_range(struct file *file,
return 0;
}
static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm)
{
}
static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte)
{

28
arch/powerpc/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,28 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_POWERPC_MM_ARCH_HOOKS_H
#define _ASM_POWERPC_MM_ARCH_HOOKS_H
static inline void arch_remap(struct mm_struct *mm,
unsigned long old_start, unsigned long old_end,
unsigned long new_start, unsigned long new_end)
{
/*
* mremap() doesn't allow moving multiple vmas so we can limit the
* check to old_start == vdso_base.
*/
if (old_start == mm->context.vdso_base)
mm->context.vdso_base = new_start;
}
#define arch_remap arch_remap
#endif /* _ASM_POWERPC_MM_ARCH_HOOKS_H */

23
arch/powerpc/include/asm/mmu_context.h
View File

@ -8,7 +8,6 @@
#include <linux/spinlock.h>
#include <asm/mmu.h>
#include <asm/cputable.h>
#include <asm-generic/mm_hooks.h>
#include <asm/cputhreads.h>
/*
@ -127,5 +126,27 @@ static inline void enter_lazy_tlb(struct mm_struct *mm,
#endif
}
static inline void arch_dup_mmap(struct mm_struct *oldmm,
struct mm_struct *mm)
{
}
static inline void arch_exit_mmap(struct mm_struct *mm)
{
}
static inline void arch_unmap(struct mm_struct *mm,
struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
if (start <= mm->context.vdso_base && mm->context.vdso_base < end)
mm->context.vdso_base = 0;
}
static inline void arch_bprm_mm_init(struct mm_struct *mm,
struct vm_area_struct *vma)
{
}
#endif /* __KERNEL__ */
#endif /* __ASM_POWERPC_MMU_CONTEXT_H */

12
arch/powerpc/include/asm/pgtable-ppc64.h
View File

@ -569,14 +569,10 @@ extern int pmdp_test_and_clear_young(struct vm_area_struct *vma,
extern int pmdp_clear_flush_young(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp);
#define __HAVE_ARCH_PMDP_GET_AND_CLEAR
extern pmd_t pmdp_get_and_clear(struct mm_struct *mm,
#define __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR
extern pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
unsigned long addr, pmd_t *pmdp);
#define __HAVE_ARCH_PMDP_CLEAR_FLUSH
extern pmd_t pmdp_clear_flush(struct vm_area_struct *vma, unsigned long address,
pmd_t *pmdp);
#define __HAVE_ARCH_PMDP_SET_WRPROTECT
static inline void pmdp_set_wrprotect(struct mm_struct *mm, unsigned long addr,
pmd_t *pmdp)
@ -592,6 +588,10 @@ static inline void pmdp_set_wrprotect(struct mm_struct *mm, unsigned long addr,
extern void pmdp_splitting_flush(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp);
extern pmd_t pmdp_collapse_flush(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp);
#define pmdp_collapse_flush pmdp_collapse_flush
#define __HAVE_ARCH_PGTABLE_DEPOSIT
extern void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp,
pgtable_t pgtable);

10
arch/powerpc/kernel/vio.c
View File

@ -557,11 +557,11 @@ static int vio_dma_iommu_map_sg(struct device *dev, struct scatterlist *sglist,
struct vio_dev *viodev = to_vio_dev(dev);
struct iommu_table *tbl;
struct scatterlist *sgl;
int ret, count = 0;
int ret, count;
size_t alloc_size = 0;
tbl = get_iommu_table_base(dev);
for (sgl = sglist; count < nelems; count++, sgl++)
for_each_sg(sglist, sgl, nelems, count)
alloc_size += roundup(sgl->length, IOMMU_PAGE_SIZE(tbl));
if (vio_cmo_alloc(viodev, alloc_size)) {
@ -577,7 +577,7 @@ static int vio_dma_iommu_map_sg(struct device *dev, struct scatterlist *sglist,
return ret;
}
for (sgl = sglist, count = 0; count < ret; count++, sgl++)
for_each_sg(sglist, sgl, ret, count)
alloc_size -= roundup(sgl->dma_length, IOMMU_PAGE_SIZE(tbl));
if (alloc_size)
vio_cmo_dealloc(viodev, alloc_size);
@ -594,10 +594,10 @@ static void vio_dma_iommu_unmap_sg(struct device *dev,
struct iommu_table *tbl;
struct scatterlist *sgl;
size_t alloc_size = 0;
int count = 0;
int count;
tbl = get_iommu_table_base(dev);
for (sgl = sglist; count < nelems; count++, sgl++)
for_each_sg(sglist, sgl, nelems, count)
alloc_size += roundup(sgl->dma_length, IOMMU_PAGE_SIZE(tbl));
dma_iommu_ops.unmap_sg(dev, sglist, nelems, direction, attrs);

5
arch/powerpc/mm/hugetlbpage.c
View File

@ -439,11 +439,6 @@ int alloc_bootmem_huge_page(struct hstate *hstate)
}
#endif
int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep)
{
return 0;
}
#ifdef CONFIG_PPC_FSL_BOOK3E
#define HUGEPD_FREELIST_SIZE \
((PAGE_SIZE - sizeof(struct hugepd_freelist)) / sizeof(pte_t))

13
arch/powerpc/mm/pgtable_64.c
View File

@ -554,18 +554,14 @@ unsigned long pmd_hugepage_update(struct mm_struct *mm, unsigned long addr,
return old;
}
pmd_t pmdp_clear_flush(struct vm_area_struct *vma, unsigned long address,
pmd_t pmdp_collapse_flush(struct vm_area_struct *vma, unsigned long address,
pmd_t *pmdp)
{
pmd_t pmd;
VM_BUG_ON(address & ~HPAGE_PMD_MASK);
if (pmd_trans_huge(*pmdp)) {
pmd = pmdp_get_and_clear(vma->vm_mm, address, pmdp);
} else {
/*
* khugepaged calls this for normal pmd
*/
VM_BUG_ON(pmd_trans_huge(*pmdp));
pmd = *pmdp;
pmd_clear(pmdp);
/*
@ -594,7 +590,6 @@ pmd_t pmdp_clear_flush(struct vm_area_struct *vma, unsigned long address,
* the old content.
*/
flush_tlb_pmd_range(vma->vm_mm, &pmd, address);
}
return pmd;
}
@ -817,7 +812,7 @@ void update_mmu_cache_pmd(struct vm_area_struct *vma, unsigned long addr,
return;
}
pmd_t pmdp_get_and_clear(struct mm_struct *mm,
pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
unsigned long addr, pmd_t *pmdp)
{
pmd_t old_pmd;

1
arch/s390/include/asm/hugetlb.h
View File

@ -35,7 +35,6 @@ static inline int prepare_hugepage_range(struct file *file,
return 0;
}
#define hugetlb_prefault_arch_hook(mm) do { } while (0)
#define arch_clear_hugepage_flags(page) do { } while (0)
int arch_prepare_hugepage(struct page *page);

15
arch/s390/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_S390_MM_ARCH_HOOKS_H
#define _ASM_S390_MM_ARCH_HOOKS_H
#endif /* _ASM_S390_MM_ARCH_HOOKS_H */

22
arch/s390/include/asm/pgtable.h
View File

@ -1498,8 +1498,8 @@ static inline int pmdp_test_and_clear_young(struct vm_area_struct *vma,
return pmd_young(pmd);
}
#define __HAVE_ARCH_PMDP_GET_AND_CLEAR
static inline pmd_t pmdp_get_and_clear(struct mm_struct *mm,
#define __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR
static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
unsigned long address, pmd_t *pmdp)
{
pmd_t pmd = *pmdp;
@ -1509,8 +1509,8 @@ static inline pmd_t pmdp_get_and_clear(struct mm_struct *mm,
return pmd;
}
#define __HAVE_ARCH_PMDP_GET_AND_CLEAR_FULL
static inline pmd_t pmdp_get_and_clear_full(struct mm_struct *mm,
#define __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR_FULL
static inline pmd_t pmdp_huge_get_and_clear_full(struct mm_struct *mm,
unsigned long address,
pmd_t *pmdp, int full)
{
@ -1522,11 +1522,11 @@ static inline pmd_t pmdp_get_and_clear_full(struct mm_struct *mm,
return pmd;
}
#define __HAVE_ARCH_PMDP_CLEAR_FLUSH
static inline pmd_t pmdp_clear_flush(struct vm_area_struct *vma,
#define __HAVE_ARCH_PMDP_HUGE_CLEAR_FLUSH
static inline pmd_t pmdp_huge_clear_flush(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp)
{
return pmdp_get_and_clear(vma->vm_mm, address, pmdp);
return pmdp_huge_get_and_clear(vma->vm_mm, address, pmdp);
}
#define __HAVE_ARCH_PMDP_INVALIDATE
@ -1548,6 +1548,14 @@ static inline void pmdp_set_wrprotect(struct mm_struct *mm,
}
}
static inline pmd_t pmdp_collapse_flush(struct vm_area_struct *vma,
unsigned long address,
pmd_t *pmdp)
{
return pmdp_huge_get_and_clear(vma->vm_mm, address, pmdp);
}
#define pmdp_collapse_flush pmdp_collapse_flush
#define pfn_pmd(pfn, pgprot) mk_pmd_phys(__pa((pfn) << PAGE_SHIFT), (pgprot))
#define mk_pmd(page, pgprot) pfn_pmd(page_to_pfn(page), (pgprot))

5
arch/s390/kernel/crash_dump.c
View File

@ -33,11 +33,12 @@ static struct memblock_type oldmem_type = {
};
#define for_each_dump_mem_range(i, nid, p_start, p_end, p_nid) \
for (i = 0, __next_mem_range(&i, nid, &memblock.physmem, \
for (i = 0, __next_mem_range(&i, nid, MEMBLOCK_NONE, \
&memblock.physmem, \
&oldmem_type, p_start, \
p_end, p_nid); \
i != (u64)ULLONG_MAX; \
__next_mem_range(&i, nid, &memblock.physmem, \
__next_mem_range(&i, nid, MEMBLOCK_NONE, &memblock.physmem,\
&oldmem_type, \
p_start, p_end, p_nid))

5
arch/s390/mm/hugetlbpage.c
View File

@ -193,11 +193,6 @@ pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr)
return (pte_t *) pmdp;
}
int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep)
{
return 0;
}
int pmd_huge(pmd_t pmd)
{
if (!MACHINE_HAS_HPAGE)

15
arch/score/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_SCORE_MM_ARCH_HOOKS_H
#define _ASM_SCORE_MM_ARCH_HOOKS_H
#endif /* _ASM_SCORE_MM_ARCH_HOOKS_H */

3
arch/sh/include/asm/hugetlb.h
View File

@ -26,9 +26,6 @@ static inline int prepare_hugepage_range(struct file *file,
return 0;
}
static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) {
}
static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
unsigned long addr, unsigned long end,
unsigned long floor,

15
arch/sh/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_SH_MM_ARCH_HOOKS_H
#define _ASM_SH_MM_ARCH_HOOKS_H
#endif /* _ASM_SH_MM_ARCH_HOOKS_H */

5
arch/sh/mm/hugetlbpage.c
View File

@ -62,11 +62,6 @@ pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr)
return pte;
}
int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep)
{
return 0;
}
int pmd_huge(pmd_t pmd)
{
return 0;

4
arch/sparc/include/asm/hugetlb.h
View File

@ -11,10 +11,6 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
pte_t *ptep);
static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm)
{
}
static inline int is_hugepage_only_range(struct mm_struct *mm,
unsigned long addr,
unsigned long len) {

15
arch/sparc/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_SPARC_MM_ARCH_HOOKS_H
#define _ASM_SPARC_MM_ARCH_HOOKS_H
#endif /* _ASM_SPARC_MM_ARCH_HOOKS_H */

4
arch/sparc/include/asm/pgtable_64.h
View File

@ -865,8 +865,8 @@ static inline unsigned long pud_pfn(pud_t pud)
void tlb_batch_add(struct mm_struct *mm, unsigned long vaddr,
pte_t *ptep, pte_t orig, int fullmm);
#define __HAVE_ARCH_PMDP_GET_AND_CLEAR
static inline pmd_t pmdp_get_and_clear(struct mm_struct *mm,
#define __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR
static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
unsigned long addr,
pmd_t *pmdp)
{

8
arch/sparc/kernel/ldc.c
View File

@ -2086,6 +2086,7 @@ int ldc_map_sg(struct ldc_channel *lp,
struct cookie_state state;
struct ldc_iommu *iommu;
int err;
struct scatterlist *s;
if (map_perm & ~LDC_MAP_ALL)
return -EINVAL;
@ -2112,9 +2113,10 @@ int ldc_map_sg(struct ldc_channel *lp,
state.pte_idx = (base - iommu->page_table);
state.nc = 0;
for (i = 0; i < num_sg; i++)
fill_cookies(&state, page_to_pfn(sg_page(&sg[i])) << PAGE_SHIFT,
sg[i].offset, sg[i].length);
for_each_sg(sg, s, num_sg, i) {
fill_cookies(&state, page_to_pfn(sg_page(s)) << PAGE_SHIFT,
s->offset, s->length);
}
return state.nc;
}

5
arch/sparc/mm/hugetlbpage.c
View File

@ -172,11 +172,6 @@ pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr)
return pte;
}
int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep)
{
return 0;
}
void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t entry)
{

6
arch/sparc/mm/init_64.c
View File

@ -1966,7 +1966,8 @@ static phys_addr_t __init available_memory(void)
phys_addr_t pa_start, pa_end;
u64 i;
for_each_free_mem_range(i, NUMA_NO_NODE, &pa_start, &pa_end, NULL)
for_each_free_mem_range(i, NUMA_NO_NODE, MEMBLOCK_NONE, &pa_start,
&pa_end, NULL)
available = available + (pa_end - pa_start);
return available;
@ -1992,7 +1993,8 @@ static void __init reduce_memory(phys_addr_t limit_ram)
if (limit_ram >= avail_ram)
return;
for_each_free_mem_range(i, NUMA_NO_NODE, &pa_start, &pa_end, NULL) {
for_each_free_mem_range(i, NUMA_NO_NODE, MEMBLOCK_NONE, &pa_start,
&pa_end, NULL) {
phys_addr_t region_size = pa_end - pa_start;
phys_addr_t clip_start = pa_start;

4
arch/tile/include/asm/hugetlb.h
View File

@ -40,10 +40,6 @@ static inline int prepare_hugepage_range(struct file *file,
return 0;
}
static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm)
{
}
static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
unsigned long addr, unsigned long end,
unsigned long floor,

15
arch/tile/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_TILE_MM_ARCH_HOOKS_H
#define _ASM_TILE_MM_ARCH_HOOKS_H
#endif /* _ASM_TILE_MM_ARCH_HOOKS_H */

4
arch/tile/include/asm/pgtable.h
View File

@ -414,8 +414,8 @@ static inline void pmdp_set_wrprotect(struct mm_struct *mm,
}
#define __HAVE_ARCH_PMDP_GET_AND_CLEAR
static inline pmd_t pmdp_get_and_clear(struct mm_struct *mm,
#define __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR
static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
unsigned long address,
pmd_t *pmdp)
{

5
arch/tile/mm/hugetlbpage.c
View File

@ -160,11 +160,6 @@ int pud_huge(pud_t pud)
return !!(pud_val(pud) & _PAGE_HUGE_PAGE);
}
int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep)
{
return 0;
}
#ifdef HAVE_ARCH_HUGETLB_UNMAPPED_AREA
static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *file,
unsigned long addr, unsigned long len,

15
arch/um/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_UM_MM_ARCH_HOOKS_H
#define _ASM_UM_MM_ARCH_HOOKS_H
#endif /* _ASM_UM_MM_ARCH_HOOKS_H */

15
arch/unicore32/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_UNICORE32_MM_ARCH_HOOKS_H
#define _ASM_UNICORE32_MM_ARCH_HOOKS_H
#endif /* _ASM_UNICORE32_MM_ARCH_HOOKS_H */

3
arch/x86/include/asm/hugetlb.h
View File

@ -26,9 +26,6 @@ static inline int prepare_hugepage_range(struct file *file,
return 0;
}
static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) {
}
static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
unsigned long addr, unsigned long end,
unsigned long floor,

15
arch/x86/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_X86_MM_ARCH_HOOKS_H
#define _ASM_X86_MM_ARCH_HOOKS_H
#endif /* _ASM_X86_MM_ARCH_HOOKS_H */

4
arch/x86/include/asm/pgtable.h
View File

@ -805,8 +805,8 @@ static inline int pmd_write(pmd_t pmd)
return pmd_flags(pmd) & _PAGE_RW;
}
#define __HAVE_ARCH_PMDP_GET_AND_CLEAR
static inline pmd_t pmdp_get_and_clear(struct mm_struct *mm, unsigned long addr,
#define __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR
static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm, unsigned long addr,
pmd_t *pmdp)
{
pmd_t pmd = native_pmdp_get_and_clear(pmdp);

3
arch/x86/kernel/check.c
View File

@ -91,7 +91,8 @@ void __init setup_bios_corruption_check(void)
corruption_check_size = round_up(corruption_check_size, PAGE_SIZE);
for_each_free_mem_range(i, NUMA_NO_NODE, &start, &end, NULL) {
for_each_free_mem_range(i, NUMA_NO_NODE, MEMBLOCK_NONE, &start, &end,
NULL) {
start = clamp_t(phys_addr_t, round_up(start, PAGE_SIZE),
PAGE_SIZE, corruption_check_size);
end = clamp_t(phys_addr_t, round_down(end, PAGE_SIZE),

3
arch/x86/kernel/e820.c
View File

@ -1123,7 +1123,8 @@ void __init memblock_find_dma_reserve(void)
nr_pages += end_pfn - start_pfn;
}
for_each_free_mem_range(u, NUMA_NO_NODE, &start, &end, NULL) {
for_each_free_mem_range(u, NUMA_NO_NODE, MEMBLOCK_NONE, &start, &end,
NULL) {
start_pfn = min_t(unsigned long, PFN_UP(start), MAX_DMA_PFN);
end_pfn = min_t(unsigned long, PFN_DOWN(end), MAX_DMA_PFN);
if (start_pfn < end_pfn)

3
arch/x86/kernel/setup.c
View File

@ -1105,6 +1105,9 @@ void __init setup_arch(char **cmdline_p)
memblock_set_current_limit(ISA_END_ADDRESS);
memblock_x86_fill();
if (efi_enabled(EFI_BOOT))
efi_find_mirror();
/*
* The EFI specification says that boot service code won't be called
* after ExitBootServices(). This is, in fact, a lie.

2
arch/x86/mm/init_32.c
View File

@ -433,7 +433,7 @@ void __init add_highpages_with_active_regions(int nid,
phys_addr_t start, end;
u64 i;
for_each_free_mem_range(i, nid, &start, &end, NULL) {
for_each_free_mem_range(i, nid, MEMBLOCK_NONE, &start, &end, NULL) {
unsigned long pfn = clamp_t(unsigned long, PFN_UP(start),
start_pfn, end_pfn);
unsigned long e_pfn = clamp_t(unsigned long, PFN_DOWN(end),

21
arch/x86/platform/efi/efi.c
View File

@ -117,6 +117,27 @@ void efi_get_time(struct timespec *now)
now->tv_nsec = 0;
}
void __init efi_find_mirror(void)
{
void *p;
u64 mirror_size = 0, total_size = 0;
for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
efi_memory_desc_t *md = p;
unsigned long long start = md->phys_addr;
unsigned long long size = md->num_pages << EFI_PAGE_SHIFT;
total_size += size;
if (md->attribute & EFI_MEMORY_MORE_RELIABLE) {
memblock_mark_mirror(start, size);
mirror_size += size;
}
}
if (mirror_size)
pr_info("Memory: %lldM/%lldM mirrored memory\n",
mirror_size>>20, total_size>>20);
}
/*
* Tell the kernel about the EFI memory map. This might include
* more than the max 128 entries that can fit in the e820 legacy

19
arch/xtensa/include/asm/dma-mapping.h
View File

@ -52,14 +52,15 @@ dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
}
static inline int
dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
enum dma_data_direction direction)
{
int i;
struct scatterlist *sg;
BUG_ON(direction == DMA_NONE);
for (i = 0; i < nents; i++, sg++ ) {
for_each_sg(sglist, sg, nents, i) {
BUG_ON(!sg_page(sg));
sg->dma_address = sg_phys(sg);
@ -124,20 +125,24 @@ dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
consistent_sync((void *)bus_to_virt(dma_handle)+offset,size,direction);
}
static inline void
dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sglist, int nelems,
enum dma_data_direction dir)
{
int i;
for (i = 0; i < nelems; i++, sg++)
struct scatterlist *sg;
for_each_sg(sglist, sg, nelems, i)
consistent_sync(sg_virt(sg), sg->length, dir);
}
static inline void
dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
enum dma_data_direction dir)
dma_sync_sg_for_device(struct device *dev, struct scatterlist *sglist,
int nelems, enum dma_data_direction dir)
{
int i;
for (i = 0; i < nelems; i++, sg++)
struct scatterlist *sg;
for_each_sg(sglist, sg, nelems, i)
consistent_sync(sg_virt(sg), sg->length, dir);
}
static inline int

15
arch/xtensa/include/asm/mm-arch-hooks.h Normal file
View File

@ -0,0 +1,15 @@
/*
* Architecture specific mm hooks
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_XTENSA_MM_ARCH_HOOKS_H
#define _ASM_XTENSA_MM_ARCH_HOOKS_H
#endif /* _ASM_XTENSA_MM_ARCH_HOOKS_H */

2
drivers/staging/android/lowmemorykiller.c
View File

@ -165,7 +165,7 @@ static unsigned long lowmem_scan(struct shrinker *s, struct shrink_control *sc)
* infrastructure. There is no real reason why the selected
* task should have access to the memory reserves.
*/
mark_tsk_oom_victim(selected);
mark_oom_victim(selected);
send_sig(SIGKILL, selected, 0);
rem += selected_tasksize;
}

2
drivers/tty/sysrq.c
View File

@ -353,9 +353,11 @@ static struct sysrq_key_op sysrq_term_op = {
static void moom_callback(struct work_struct *ignored)
{
mutex_lock(&oom_lock);
if (!out_of_memory(node_zonelist(first_memory_node, GFP_KERNEL),
GFP_KERNEL, 0, NULL, true))
pr_info("OOM request ignored because killer is disabled\n");
mutex_unlock(&oom_lock);
}
static DECLARE_WORK(moom_work, moom_callback);

8
drivers/xen/tmem.c
View File

@ -381,15 +381,9 @@ static int __init xen_tmem_init(void)
#ifdef CONFIG_FRONTSWAP
if (tmem_enabled && frontswap) {
char *s = "";
struct frontswap_ops *old_ops;
tmem_frontswap_poolid = -1;
old_ops = frontswap_register_ops(&tmem_frontswap_ops);
if (IS_ERR(old_ops) || old_ops) {
if (IS_ERR(old_ops))
return PTR_ERR(old_ops);
s = " (WARNING: frontswap_ops overridden)";
}
frontswap_register_ops(&tmem_frontswap_ops);
pr_info("frontswap enabled, RAM provided by Xen Transcendent Memory%s\n",
s);
}

3
fs/configfs/item.c
View File

@ -47,12 +47,11 @@ static void config_item_release(struct kref *kref);
* config_item_init - initialize item.
* @item: item in question.
*/
void config_item_init(struct config_item *item)
static void config_item_init(struct config_item *item)
{
kref_init(&item->ci_kref);
INIT_LIST_HEAD(&item->ci_entry);
}
EXPORT_SYMBOL(config_item_init);
/**
* config_item_set_name - Set the name of an item

1
fs/hugetlbfs/inode.c
View File

@ -130,7 +130,6 @@ static int hugetlbfs_file_mmap(struct file *file, struct vm_area_struct *vma)
goto out;
ret = 0;
hugetlb_prefault_arch_hook(vma->vm_mm);
if (vma->vm_flags & VM_WRITE && inode->i_size < len)
inode->i_size = len;
out:

3
fs/ntfs/file.c
View File

@ -525,7 +525,8 @@ static inline int __ntfs_grab_cache_pages(struct address_space *mapping,
}
}
err = add_to_page_cache_lru(*cached_page, mapping,
index, GFP_KERNEL);
index,
GFP_KERNEL & mapping_gfp_mask(mapping));
if (unlikely(err)) {
if (err == -EEXIST)
continue;

7
fs/ntfs/malloc.h
View File

@ -85,12 +85,7 @@ static inline void *ntfs_malloc_nofs_nofail(unsigned long size)
static inline void ntfs_free(void *addr)
{
if (!is_vmalloc_addr(addr)) {
kfree(addr);
/* free_page((unsigned long)addr); */
return;
}
vfree(addr);
kvfree(addr);
}
#endif /* _LINUX_NTFS_MALLOC_H */

35
fs/ocfs2/alloc.c
View File

@ -2925,7 +2925,8 @@ static int __ocfs2_rotate_tree_left(handle_t *handle,
struct ocfs2_path *right_path = NULL;
struct super_block *sb = ocfs2_metadata_cache_get_super(et->et_ci);
BUG_ON(!ocfs2_is_empty_extent(&(path_leaf_el(path)->l_recs[0])));
if (!ocfs2_is_empty_extent(&(path_leaf_el(path)->l_recs[0])))
return 0;
*empty_extent_path = NULL;
@ -4311,13 +4312,13 @@ out:
return ret;
}
static enum ocfs2_contig_type
ocfs2_figure_merge_contig_type(struct ocfs2_extent_tree *et,
static int ocfs2_figure_merge_contig_type(struct ocfs2_extent_tree *et,
struct ocfs2_path *path,
struct ocfs2_extent_list *el, int index,
struct ocfs2_extent_rec *split_rec)
struct ocfs2_extent_rec *split_rec,
struct ocfs2_merge_ctxt *ctxt)
{
int status;
int status = 0;
enum ocfs2_contig_type ret = CONTIG_NONE;
u32 left_cpos, right_cpos;
struct ocfs2_extent_rec *rec = NULL;
@ -4336,8 +4337,11 @@ ocfs2_figure_merge_contig_type(struct ocfs2_extent_tree *et,
if (left_cpos != 0) {
left_path = ocfs2_new_path_from_path(path);
if (!left_path)
if (!left_path) {
status = -ENOMEM;
mlog_errno(status);
goto exit;
}
status = ocfs2_find_path(et->et_ci, left_path,
left_cpos);
@ -4392,8 +4396,11 @@ ocfs2_figure_merge_contig_type(struct ocfs2_extent_tree *et,
goto free_left_path;
right_path = ocfs2_new_path_from_path(path);
if (!right_path)
if (!right_path) {
status = -ENOMEM;
mlog_errno(status);
goto free_left_path;
}
status = ocfs2_find_path(et->et_ci, right_path, right_cpos);
if (status)
@ -4433,7 +4440,10 @@ free_right_path:
free_left_path:
ocfs2_free_path(left_path);
exit:
return ret;
if (status == 0)
ctxt->c_contig_type = ret;
return status;
}
static void ocfs2_figure_contig_type(struct ocfs2_extent_tree *et,
@ -5039,9 +5049,14 @@ int ocfs2_split_extent(handle_t *handle,
goto out;
}
ctxt.c_contig_type = ocfs2_figure_merge_contig_type(et, path, el,
ret = ocfs2_figure_merge_contig_type(et, path, el,
split_index,
split_rec);
split_rec,
&ctxt);
if (ret) {
mlog_errno(ret);
goto out;
}
/*
* The core merge / split code wants to know how much room is

23
fs/ocfs2/aops.c
View File

@ -523,7 +523,7 @@ static int ocfs2_direct_IO_get_blocks(struct inode *inode, sector_t iblock,
unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits;
unsigned long max_blocks = bh_result->b_size >> inode->i_blkbits;
unsigned long len = bh_result->b_size;
unsigned int clusters_to_alloc = 0;
unsigned int clusters_to_alloc = 0, contig_clusters = 0;
cpos = ocfs2_blocks_to_clusters(inode->i_sb, iblock);
@ -560,8 +560,10 @@ static int ocfs2_direct_IO_get_blocks(struct inode *inode, sector_t iblock,
/* fill hole, allocate blocks can't be larger than the size
* of the hole */
clusters_to_alloc = ocfs2_clusters_for_bytes(inode->i_sb, len);
if (clusters_to_alloc > contig_blocks)
clusters_to_alloc = contig_blocks;
contig_clusters = ocfs2_clusters_for_blocks(inode->i_sb,
contig_blocks);
if (clusters_to_alloc > contig_clusters)
clusters_to_alloc = contig_clusters;
/* allocate extent and insert them into the extent tree */
ret = ocfs2_extend_allocation(inode, cpos,
@ -619,9 +621,6 @@ static void ocfs2_dio_end_io(struct kiocb *iocb,
/* this io's submitter should not have unlocked this before we could */
BUG_ON(!ocfs2_iocb_is_rw_locked(iocb));
if (ocfs2_iocb_is_sem_locked(iocb))
ocfs2_iocb_clear_sem_locked(iocb);
if (ocfs2_iocb_is_unaligned_aio(iocb)) {
ocfs2_iocb_clear_unaligned_aio(iocb);
@ -925,13 +924,23 @@ clean_orphan:
int update_isize = written > 0 ? 1 : 0;
loff_t end = update_isize ? offset + written : 0;
tmp_ret = ocfs2_del_inode_from_orphan(osb, inode,
tmp_ret = ocfs2_inode_lock(inode, &di_bh, 1);
if (tmp_ret < 0) {
ret = tmp_ret;
mlog_errno(ret);
goto out;
}
tmp_ret = ocfs2_del_inode_from_orphan(osb, inode, di_bh,
update_isize, end);
if (tmp_ret < 0) {
ret = tmp_ret;
mlog_errno(ret);
goto out;
}
ocfs2_inode_unlock(inode, 1);
tmp_ret = jbd2_journal_force_commit(journal);
if (tmp_ret < 0) {
ret = tmp_ret;

7
fs/ocfs2/aops.h
View File

@ -79,7 +79,6 @@ static inline void ocfs2_iocb_set_rw_locked(struct kiocb *iocb, int level)
enum ocfs2_iocb_lock_bits {
OCFS2_IOCB_RW_LOCK = 0,
OCFS2_IOCB_RW_LOCK_LEVEL,
OCFS2_IOCB_SEM,
OCFS2_IOCB_UNALIGNED_IO,
OCFS2_IOCB_NUM_LOCKS
};
@ -88,12 +87,6 @@ enum ocfs2_iocb_lock_bits {
clear_bit(OCFS2_IOCB_RW_LOCK, (unsigned long *)&iocb->private)
#define ocfs2_iocb_rw_locked_level(iocb) \
test_bit(OCFS2_IOCB_RW_LOCK_LEVEL, (unsigned long *)&iocb->private)
#define ocfs2_iocb_set_sem_locked(iocb) \
set_bit(OCFS2_IOCB_SEM, (unsigned long *)&iocb->private)
#define ocfs2_iocb_clear_sem_locked(iocb) \
clear_bit(OCFS2_IOCB_SEM, (unsigned long *)&iocb->private)
#define ocfs2_iocb_is_sem_locked(iocb) \
test_bit(OCFS2_IOCB_SEM, (unsigned long *)&iocb->private)
#define ocfs2_iocb_set_unaligned_aio(iocb) \
set_bit(OCFS2_IOCB_UNALIGNED_IO, (unsigned long *)&iocb->private)

34
fs/ocfs2/cluster/masklog.c
View File

@ -64,6 +64,40 @@ static ssize_t mlog_mask_store(u64 mask, const char *buf, size_t count)
return count;
}
void __mlog_printk(const u64 *mask, const char *func, int line,
const char *fmt, ...)
{
struct va_format vaf;
va_list args;
const char *level;
const char *prefix = "";
if (!__mlog_test_u64(*mask, mlog_and_bits) ||
__mlog_test_u64(*mask, mlog_not_bits))
return;
if (*mask & ML_ERROR) {
level = KERN_ERR;
prefix = "ERROR: ";
} else if (*mask & ML_NOTICE) {
level = KERN_NOTICE;
} else {
level = KERN_INFO;
}
va_start(args, fmt);
vaf.fmt = fmt;
vaf.va = &args;
printk("%s(%s,%u,%u):%s:%d %s%pV",
level, current->comm, task_pid_nr(current),
raw_smp_processor_id(), func, line, prefix, &vaf);
va_end(args);
}
EXPORT_SYMBOL_GPL(__mlog_printk);
struct mlog_attribute {
struct attribute attr;
u64 mask;

42
fs/ocfs2/cluster/masklog.h
View File

@ -162,38 +162,20 @@ extern struct mlog_bits mlog_and_bits, mlog_not_bits;
#endif
__printf(4, 5)
void __mlog_printk(const u64 *m, const char *func, int line,
const char *fmt, ...);
/*
* smp_processor_id() "helpfully" screams when called outside preemptible
* regions in current kernels. sles doesn't have the variants that don't
* scream. just do this instead of trying to guess which we're building
* against.. *sigh*.
* Testing before the __mlog_printk call lets the compiler eliminate the
* call completely when (m & ML_ALLOWED_BITS) is 0.
*/
#define __mlog_cpu_guess ({ \
unsigned long _cpu = get_cpu(); \
put_cpu(); \
_cpu; \
})
/* In the following two macros, the whitespace after the ',' just
* before ##args is intentional. Otherwise, gcc 2.95 will eat the
* previous token if args expands to nothing.
*/
#define __mlog_printk(level, fmt, args...) \
printk(level "(%s,%u,%lu):%s:%d " fmt, current->comm, \
task_pid_nr(current), __mlog_cpu_guess, \
__PRETTY_FUNCTION__, __LINE__ , ##args)
#define mlog(mask, fmt, args...) do { \
u64 __m = MLOG_MASK_PREFIX | (mask); \
if ((__m & ML_ALLOWED_BITS) && \
__mlog_test_u64(__m, mlog_and_bits) && \
!__mlog_test_u64(__m, mlog_not_bits)) { \
if (__m & ML_ERROR) \
__mlog_printk(KERN_ERR, "ERROR: "fmt , ##args); \
else if (__m & ML_NOTICE) \
__mlog_printk(KERN_NOTICE, fmt , ##args); \
else __mlog_printk(KERN_INFO, fmt , ##args); \
} \
#define mlog(mask, fmt, ...) \
do { \
u64 _m = MLOG_MASK_PREFIX | (mask); \
if (_m & ML_ALLOWED_BITS) \
__mlog_printk(&_m, __func__, __LINE__, fmt, \
##__VA_ARGS__); \
} while (0)
#define mlog_errno(st) ({ \

2
fs/ocfs2/cluster/tcp.c
View File

@ -2204,7 +2204,7 @@ out:
kfree(o2net_hand);
kfree(o2net_keep_req);
kfree(o2net_keep_resp);
o2net_debugfs_exit();
o2quo_exit();
return -ENOMEM;
}

23
fs/ocfs2/dir.c
View File

@ -1617,7 +1617,7 @@ int __ocfs2_add_entry(handle_t *handle,
struct ocfs2_dir_entry *de, *de1;
struct ocfs2_dinode *di = (struct ocfs2_dinode *)parent_fe_bh->b_data;
struct super_block *sb = dir->i_sb;
int retval, status;
int retval;
unsigned int size = sb->s_blocksize;
struct buffer_head *insert_bh = lookup->dl_leaf_bh;
char *data_start = insert_bh->b_data;
@ -1695,26 +1695,26 @@ int __ocfs2_add_entry(handle_t *handle,
}
if (insert_bh == parent_fe_bh)
status = ocfs2_journal_access_di(handle,
retval = ocfs2_journal_access_di(handle,
INODE_CACHE(dir),
insert_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
else {
status = ocfs2_journal_access_db(handle,
retval = ocfs2_journal_access_db(handle,
INODE_CACHE(dir),
insert_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ocfs2_dir_indexed(dir)) {
status = ocfs2_dx_dir_insert(dir,
if (!retval && ocfs2_dir_indexed(dir))
retval = ocfs2_dx_dir_insert(dir,
handle,
lookup);
if (status) {
mlog_errno(status);
}
if (retval) {
mlog_errno(retval);
goto bail;
}
}
}
/* By now the buffer is marked for journaling */
offset += le16_to_cpu(de->rec_len);
@ -3543,13 +3543,10 @@ static void dx_leaf_sort_swap(void *a, void *b, int size)
{
struct ocfs2_dx_entry *entry1 = a;
struct ocfs2_dx_entry *entry2 = b;
struct ocfs2_dx_entry tmp;
BUG_ON(size != sizeof(*entry1));
tmp = *entry1;
*entry1 = *entry2;
*entry2 = tmp;
swap(*entry1, *entry2);
}
static int ocfs2_dx_leaf_same_major(struct ocfs2_dx_leaf *dx_leaf)

1
fs/ocfs2/dlm/dlmcommon.h
View File

@ -1014,7 +1014,6 @@ void dlm_move_lockres_to_recovery_list(struct dlm_ctxt *dlm,
/* will exit holding res->spinlock, but may drop in function */
void __dlm_wait_on_lockres_flags(struct dlm_lock_resource *res, int flags);
void __dlm_wait_on_lockres_flags_set(struct dlm_lock_resource *res, int flags);
/* will exit holding res->spinlock, but may drop in function */
static inline void __dlm_wait_on_lockres(struct dlm_lock_resource *res)

31
fs/ocfs2/file.c
View File

@ -2250,7 +2250,7 @@ out:
static ssize_t ocfs2_file_write_iter(struct kiocb *iocb,
struct iov_iter *from)
{
int direct_io, appending, rw_level, have_alloc_sem = 0;
int direct_io, appending, rw_level;
int can_do_direct, has_refcount = 0;
ssize_t written = 0;
ssize_t ret;
@ -2279,16 +2279,7 @@ static ssize_t ocfs2_file_write_iter(struct kiocb *iocb,
mutex_lock(&inode->i_mutex);
ocfs2_iocb_clear_sem_locked(iocb);
relock:
/* to match setattr's i_mutex -> rw_lock ordering */
if (direct_io) {
have_alloc_sem = 1;
/* communicate with ocfs2_dio_end_io */
ocfs2_iocb_set_sem_locked(iocb);
}
/*
* Concurrent O_DIRECT writes are allowed with
* mount_option "coherency=buffered".
@ -2298,7 +2289,7 @@ relock:
ret = ocfs2_rw_lock(inode, rw_level);
if (ret < 0) {
mlog_errno(ret);
goto out_sems;
goto out_mutex;
}
/*
@ -2347,7 +2338,6 @@ relock:
if (direct_io && !can_do_direct) {
ocfs2_rw_unlock(inode, rw_level);
have_alloc_sem = 0;
rw_level = -1;
direct_io = 0;
@ -2416,7 +2406,6 @@ no_sync:
*/
if ((ret == -EIOCBQUEUED) || (!ocfs2_iocb_is_rw_locked(iocb))) {
rw_level = -1;
have_alloc_sem = 0;
unaligned_dio = 0;
}
@ -2429,10 +2418,7 @@ out:
if (rw_level != -1)
ocfs2_rw_unlock(inode, rw_level);
out_sems:
if (have_alloc_sem)
ocfs2_iocb_clear_sem_locked(iocb);
out_mutex:
mutex_unlock(&inode->i_mutex);
if (written)
@ -2473,7 +2459,7 @@ bail:
static ssize_t ocfs2_file_read_iter(struct kiocb *iocb,
struct iov_iter *to)
{
int ret = 0, rw_level = -1, have_alloc_sem = 0, lock_level = 0;
int ret = 0, rw_level = -1, lock_level = 0;
struct file *filp = iocb->ki_filp;
struct inode *inode = file_inode(filp);
@ -2490,16 +2476,11 @@ static ssize_t ocfs2_file_read_iter(struct kiocb *iocb,
goto bail;
}
ocfs2_iocb_clear_sem_locked(iocb);
/*
* buffered reads protect themselves in ->readpage(). O_DIRECT reads
* need locks to protect pending reads from racing with truncate.
*/
if (iocb->ki_flags & IOCB_DIRECT) {
have_alloc_sem = 1;
ocfs2_iocb_set_sem_locked(iocb);
ret = ocfs2_rw_lock(inode, 0);
if (ret < 0) {
mlog_errno(ret);
@ -2535,13 +2516,9 @@ static ssize_t ocfs2_file_read_iter(struct kiocb *iocb,
/* see ocfs2_file_write_iter */
if (ret == -EIOCBQUEUED || !ocfs2_iocb_is_rw_locked(iocb)) {
rw_level = -1;
have_alloc_sem = 0;
}
bail:
if (have_alloc_sem)
ocfs2_iocb_clear_sem_locked(iocb);
if (rw_level != -1)
ocfs2_rw_unlock(inode, rw_level);

76
fs/ocfs2/journal.c
View File

@ -108,7 +108,7 @@ struct ocfs2_replay_map {
unsigned char rm_replay_slots[0];
};
void ocfs2_replay_map_set_state(struct ocfs2_super *osb, int state)
static void ocfs2_replay_map_set_state(struct ocfs2_super *osb, int state)
{
if (!osb->replay_map)
return;
@ -153,7 +153,7 @@ int ocfs2_compute_replay_slots(struct ocfs2_super *osb)
return 0;
}
void ocfs2_queue_replay_slots(struct ocfs2_super *osb,
static void ocfs2_queue_replay_slots(struct ocfs2_super *osb,
enum ocfs2_orphan_reco_type orphan_reco_type)
{
struct ocfs2_replay_map *replay_map = osb->replay_map;
@ -173,7 +173,7 @@ void ocfs2_queue_replay_slots(struct ocfs2_super *osb,
replay_map->rm_state = REPLAY_DONE;
}
void ocfs2_free_replay_slots(struct ocfs2_super *osb)
static void ocfs2_free_replay_slots(struct ocfs2_super *osb)
{
struct ocfs2_replay_map *replay_map = osb->replay_map;
@ -571,9 +571,7 @@ static void ocfs2_abort_trigger(struct jbd2_buffer_trigger_type *triggers,
(unsigned long)bh,
(unsigned long long)bh->b_blocknr);
/* We aren't guaranteed to have the superblock here - but if we
* don't, it'll just crash. */
ocfs2_error(bh->b_assoc_map->host->i_sb,
ocfs2_error(bh->b_bdev->bd_super,
"JBD2 has aborted our journal, ocfs2 cannot continue\n");
}
@ -775,7 +773,20 @@ void ocfs2_journal_dirty(handle_t *handle, struct buffer_head *bh)
trace_ocfs2_journal_dirty((unsigned long long)bh->b_blocknr);
status = jbd2_journal_dirty_metadata(handle, bh);
BUG_ON(status);
if (status) {
mlog_errno(status);
if (!is_handle_aborted(handle)) {
journal_t *journal = handle->h_transaction->t_journal;
struct super_block *sb = bh->b_bdev->bd_super;
mlog(ML_ERROR, "jbd2_journal_dirty_metadata failed. "
"Aborting transaction and journal.\n");
handle->h_err = status;
jbd2_journal_abort_handle(handle);
jbd2_journal_abort(journal, status);
ocfs2_abort(sb, "Journal already aborted.\n");
}
}
}
#define OCFS2_DEFAULT_COMMIT_INTERVAL (HZ * JBD2_DEFAULT_MAX_COMMIT_AGE)
@ -1884,7 +1895,7 @@ static inline unsigned long ocfs2_orphan_scan_timeout(void)
* hasn't happened. The node queues a scan and increments the
* sequence number in the LVB.
*/
void ocfs2_queue_orphan_scan(struct ocfs2_super *osb)
static void ocfs2_queue_orphan_scan(struct ocfs2_super *osb)
{
struct ocfs2_orphan_scan *os;
int status, i;
@ -1933,7 +1944,7 @@ out:
}
/* Worker task that gets fired every ORPHAN_SCAN_SCHEDULE_TIMEOUT millsec */
void ocfs2_orphan_scan_work(struct work_struct *work)
static void ocfs2_orphan_scan_work(struct work_struct *work)
{
struct ocfs2_orphan_scan *os;
struct ocfs2_super *osb;
@ -2137,6 +2148,8 @@ static int ocfs2_recover_orphans(struct ocfs2_super *osb,
struct inode *inode = NULL;
struct inode *iter;
struct ocfs2_inode_info *oi;
struct buffer_head *di_bh = NULL;
struct ocfs2_dinode *di = NULL;
trace_ocfs2_recover_orphans(slot);
@ -2157,16 +2170,22 @@ static int ocfs2_recover_orphans(struct ocfs2_super *osb,
iter = oi->ip_next_orphan;
oi->ip_next_orphan = NULL;
ret = ocfs2_rw_lock(inode, 1);
if (ret < 0) {
mlog_errno(ret);
goto next;
}
/*
* We need to take and drop the inode lock to
* force read inode from disk.
*/
ret = ocfs2_inode_lock(inode, NULL, 0);
ret = ocfs2_inode_lock(inode, &di_bh, 1);
if (ret) {
mlog_errno(ret);
goto next;
goto unlock_rw;
}
ocfs2_inode_unlock(inode, 0);
di = (struct ocfs2_dinode *)di_bh->b_data;
if (inode->i_nlink == 0) {
spin_lock(&oi->ip_lock);
@ -2174,43 +2193,30 @@ static int ocfs2_recover_orphans(struct ocfs2_super *osb,
* ocfs2_delete_inode. */
oi->ip_flags |= OCFS2_INODE_MAYBE_ORPHANED;
spin_unlock(&oi->ip_lock);
} else if (orphan_reco_type == ORPHAN_NEED_TRUNCATE) {
struct buffer_head *di_bh = NULL;
ret = ocfs2_rw_lock(inode, 1);
if (ret) {
mlog_errno(ret);
goto next;
}
ret = ocfs2_inode_lock(inode, &di_bh, 1);
if (ret < 0) {
ocfs2_rw_unlock(inode, 1);
mlog_errno(ret);
goto next;
}
} else if ((orphan_reco_type == ORPHAN_NEED_TRUNCATE) &&
(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))) {
ret = ocfs2_truncate_file(inode, di_bh,
i_size_read(inode));
ocfs2_inode_unlock(inode, 1);
ocfs2_rw_unlock(inode, 1);
brelse(di_bh);
if (ret < 0) {
if (ret != -ENOSPC)
mlog_errno(ret);
goto next;
goto unlock_inode;
}
ret = ocfs2_del_inode_from_orphan(osb, inode, 0, 0);
ret = ocfs2_del_inode_from_orphan(osb, inode, di_bh, 0, 0);
if (ret)
mlog_errno(ret);
wake_up(&OCFS2_I(inode)->append_dio_wq);
} /* else if ORPHAN_NO_NEED_TRUNCATE, do nothing */
unlock_inode:
ocfs2_inode_unlock(inode, 1);
unlock_rw:
ocfs2_rw_unlock(inode, 1);
next:
iput(inode);
brelse(di_bh);
di_bh = NULL;
inode = iter;
}

33
fs/ocfs2/namei.c
View File

@ -1116,8 +1116,6 @@ static int ocfs2_double_lock(struct ocfs2_super *osb,
int inode1_is_ancestor, inode2_is_ancestor;
struct ocfs2_inode_info *oi1 = OCFS2_I(inode1);
struct ocfs2_inode_info *oi2 = OCFS2_I(inode2);
struct buffer_head **tmpbh;
struct inode *tmpinode;
trace_ocfs2_double_lock((unsigned long long)oi1->ip_blkno,
(unsigned long long)oi2->ip_blkno);
@ -1148,13 +1146,8 @@ static int ocfs2_double_lock(struct ocfs2_super *osb,
(oi1->ip_blkno < oi2->ip_blkno &&
inode2_is_ancestor == 0)) {
/* switch id1 and id2 around */
tmpbh = bh2;
bh2 = bh1;
bh1 = tmpbh;
tmpinode = inode2;
inode2 = inode1;
inode1 = tmpinode;
swap(bh2, bh1);
swap(inode2, inode1);
}
/* lock id2 */
status = ocfs2_inode_lock_nested(inode2, bh2, 1,
@ -2670,30 +2663,22 @@ bail:
}
int ocfs2_del_inode_from_orphan(struct ocfs2_super *osb,
struct inode *inode, int update_isize,
loff_t end)
struct inode *inode, struct buffer_head *di_bh,
int update_isize, loff_t end)
{
struct inode *orphan_dir_inode = NULL;
struct buffer_head *orphan_dir_bh = NULL;
struct buffer_head *di_bh = NULL;
struct ocfs2_dinode *di = NULL;
struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
handle_t *handle = NULL;
int status = 0;
status = ocfs2_inode_lock(inode, &di_bh, 1);
if (status < 0) {
mlog_errno(status);
goto bail;
}
di = (struct ocfs2_dinode *) di_bh->b_data;
orphan_dir_inode = ocfs2_get_system_file_inode(osb,
ORPHAN_DIR_SYSTEM_INODE,
le16_to_cpu(di->i_dio_orphaned_slot));
if (!orphan_dir_inode) {
status = -ENOENT;
mlog_errno(status);
goto bail_unlock_inode;
goto bail;
}
mutex_lock(&orphan_dir_inode->i_mutex);
@ -2702,7 +2687,7 @@ int ocfs2_del_inode_from_orphan(struct ocfs2_super *osb,
mutex_unlock(&orphan_dir_inode->i_mutex);
iput(orphan_dir_inode);
mlog_errno(status);
goto bail_unlock_inode;
goto bail;
}
handle = ocfs2_start_trans(osb,
@ -2749,10 +2734,6 @@ bail_unlock_orphan:
brelse(orphan_dir_bh);
iput(orphan_dir_inode);
bail_unlock_inode:
ocfs2_inode_unlock(inode, 1);
brelse(di_bh);
bail:
return status;
}

4
fs/ocfs2/namei.h
View File

@ -42,8 +42,8 @@ int ocfs2_create_inode_in_orphan(struct inode *dir,
int ocfs2_add_inode_to_orphan(struct ocfs2_super *osb,
struct inode *inode);
int ocfs2_del_inode_from_orphan(struct ocfs2_super *osb,
struct inode *inode, int update_isize,
loff_t end);
struct inode *inode, struct buffer_head *di_bh,
int update_isize, loff_t end);
int ocfs2_mv_orphaned_inode_to_new(struct inode *dir,
struct inode *new_inode,
struct dentry *new_dentry);

10
fs/ocfs2/ocfs2.h
View File

@ -717,6 +717,16 @@ static inline u64 ocfs2_clusters_to_blocks(struct super_block *sb,
return (u64)clusters << c_to_b_bits;
}
static inline u32 ocfs2_clusters_for_blocks(struct super_block *sb,
u64 blocks)
{
int b_to_c_bits = OCFS2_SB(sb)->s_clustersize_bits -
sb->s_blocksize_bits;
blocks += (1 << b_to_c_bits) - 1;
return (u32)(blocks >> b_to_c_bits);
}
static inline u32 ocfs2_blocks_to_clusters(struct super_block *sb,
u64 blocks)
{

6
fs/ocfs2/refcounttree.c
View File

@ -1406,11 +1406,9 @@ static int cmp_refcount_rec_by_cpos(const void *a, const void *b)
static void swap_refcount_rec(void *a, void *b, int size)
{
struct ocfs2_refcount_rec *l = a, *r = b, tmp;
struct ocfs2_refcount_rec *l = a, *r = b;
tmp = *l;
*l = *r;
*r = tmp;
swap(*l, *r);
}
/*

2
fs/ocfs2/xattr.c
View File

@ -7271,7 +7271,7 @@ static int ocfs2_xattr_security_set(struct dentry *dentry, const char *name,
name, value, size, flags);
}
int ocfs2_initxattrs(struct inode *inode, const struct xattr *xattr_array,
static int ocfs2_initxattrs(struct inode *inode, const struct xattr *xattr_array,
void *fs_info)
{
const struct xattr *xattr;

8
fs/proc/array.c
View File

@ -126,6 +126,14 @@ static inline const char *get_task_state(struct task_struct *tsk)
{
unsigned int state = (tsk->state | tsk->exit_state) & TASK_REPORT;
/*
* Parked tasks do not run; they sit in __kthread_parkme().
* Without this check, we would report them as running, which is
* clearly wrong, so we report them as sleeping instead.
*/
if (tsk->state == TASK_PARKED)
state = TASK_INTERRUPTIBLE;
BUILD_BUG_ON(1 + ilog2(TASK_REPORT) != ARRAY_SIZE(task_state_array)-1);
return task_state_array[fls(state)];

2
fs/splice.c
View File

@ -360,7 +360,7 @@ __generic_file_splice_read(struct file *in, loff_t *ppos,
break;
error = add_to_page_cache_lru(page, mapping, index,
GFP_KERNEL);
GFP_KERNEL & mapping_gfp_mask(mapping));
if (unlikely(error)) {
page_cache_release(page);
if (error == -EEXIST)

30
include/asm-generic/pgtable.h
View File

@ -96,9 +96,9 @@ static inline pte_t ptep_get_and_clear(struct mm_struct *mm,
}
#endif
#ifndef __HAVE_ARCH_PMDP_GET_AND_CLEAR
#ifndef __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
static inline pmd_t pmdp_get_and_clear(struct mm_struct *mm,
static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
unsigned long address,
pmd_t *pmdp)
{
@ -109,13 +109,13 @@ static inline pmd_t pmdp_get_and_clear(struct mm_struct *mm,
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
#endif
#ifndef __HAVE_ARCH_PMDP_GET_AND_CLEAR_FULL
#ifndef __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR_FULL
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
static inline pmd_t pmdp_get_and_clear_full(struct mm_struct *mm,
static inline pmd_t pmdp_huge_get_and_clear_full(struct mm_struct *mm,
unsigned long address, pmd_t *pmdp,
int full)
{
return pmdp_get_and_clear(mm, address, pmdp);
return pmdp_huge_get_and_clear(mm, address, pmdp);
}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
#endif
@ -152,8 +152,8 @@ extern pte_t ptep_clear_flush(struct vm_area_struct *vma,
pte_t *ptep);
#endif
#ifndef __HAVE_ARCH_PMDP_CLEAR_FLUSH
extern pmd_t pmdp_clear_flush(struct vm_area_struct *vma,
#ifndef __HAVE_ARCH_PMDP_HUGE_CLEAR_FLUSH
extern pmd_t pmdp_huge_clear_flush(struct vm_area_struct *vma,
unsigned long address,
pmd_t *pmdp);
#endif
@ -189,6 +189,22 @@ extern void pmdp_splitting_flush(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp);
#endif
#ifndef pmdp_collapse_flush
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
extern pmd_t pmdp_collapse_flush(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp);
#else
static inline pmd_t pmdp_collapse_flush(struct vm_area_struct *vma,
unsigned long address,
pmd_t *pmdp)
{
BUILD_BUG();
return *pmdp;
}
#define pmdp_collapse_flush pmdp_collapse_flush
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
#endif
#ifndef __HAVE_ARCH_PGTABLE_DEPOSIT
extern void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp,
pgtable_t pgtable);

10
include/linux/bootmem.h
View File

@ -357,12 +357,12 @@ extern void *alloc_large_system_hash(const char *tablename,
/* Only NUMA needs hash distribution. 64bit NUMA architectures have
* sufficient vmalloc space.
*/
#if defined(CONFIG_NUMA) && defined(CONFIG_64BIT)
#define HASHDIST_DEFAULT 1
#else
#define HASHDIST_DEFAULT 0
#endif
#ifdef CONFIG_NUMA
#define HASHDIST_DEFAULT IS_ENABLED(CONFIG_64BIT)
extern int hashdist; /* Distribute hashes across NUMA nodes? */
#else
#define hashdist (0)
#endif
#endif /* _LINUX_BOOTMEM_H */

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