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authorLinus Torvalds <torvalds@linux-foundation.org>2020-12-15 12:53:37 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2020-12-15 12:53:37 -0800
commitac73e3dc8acd0a3be292755db30388c3580f5674 (patch)
tree5abef6cb82b205b5dbbb69dca950b8a5aae716de /arch/s390
parent148842c98a24e508aecb929718818fbf4c2a6ff3 (diff)
parentdfefd226b0bf7c435a58d75a0ce2f9273b9825f6 (diff)
Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton: - a few random little subsystems - almost all of the MM patches which are staged ahead of linux-next material. I'll trickle to post-linux-next work in as the dependents get merged up. Subsystems affected by this patch series: kthread, kbuild, ide, ntfs, ocfs2, arch, and mm (slab-generic, slab, slub, dax, debug, pagecache, gup, swap, shmem, memcg, pagemap, mremap, hmm, vmalloc, documentation, kasan, pagealloc, memory-failure, hugetlb, vmscan, z3fold, compaction, oom-kill, migration, cma, page-poison, userfaultfd, zswap, zsmalloc, uaccess, zram, and cleanups). * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (200 commits) mm: cleanup kstrto*() usage mm: fix fall-through warnings for Clang mm: slub: convert sysfs sprintf family to sysfs_emit/sysfs_emit_at mm: shmem: convert shmem_enabled_show to use sysfs_emit_at mm:backing-dev: use sysfs_emit in macro defining functions mm: huge_memory: convert remaining use of sprintf to sysfs_emit and neatening mm: use sysfs_emit for struct kobject * uses mm: fix kernel-doc markups zram: break the strict dependency from lzo zram: add stat to gather incompressible pages since zram set up zram: support page writeback mm/process_vm_access: remove redundant initialization of iov_r mm/zsmalloc.c: rework the list_add code in insert_zspage() mm/zswap: move to use crypto_acomp API for hardware acceleration mm/zswap: fix passing zero to 'PTR_ERR' warning mm/zswap: make struct kernel_param_ops definitions const userfaultfd/selftests: hint the test runner on required privilege userfaultfd/selftests: fix retval check for userfaultfd_open() userfaultfd/selftests: always dump something in modes userfaultfd: selftests: make __{s,u}64 format specifiers portable ...
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/Kconfig4
-rw-r--r--arch/s390/configs/debug_defconfig2
-rw-r--r--arch/s390/configs/defconfig2
-rw-r--r--arch/s390/kernel/vdso.c11
4 files changed, 4 insertions, 15 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index a60cc523d810..a9b1328e375d 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -35,9 +35,6 @@ config GENERIC_LOCKBREAK
config PGSTE
def_bool y if KVM
-config ARCH_SUPPORTS_DEBUG_PAGEALLOC
- def_bool y
-
config AUDIT_ARCH
def_bool y
@@ -105,6 +102,7 @@ config S390
select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
select ARCH_STACKWALK
select ARCH_SUPPORTS_ATOMIC_RMW
+ select ARCH_SUPPORTS_DEBUG_PAGEALLOC
select ARCH_SUPPORTS_NUMA_BALANCING
select ARCH_USE_BUILTIN_BSWAP
select ARCH_USE_CMPXCHG_LOCKREF
diff --git a/arch/s390/configs/debug_defconfig b/arch/s390/configs/debug_defconfig
index c52113a238b1..1be32fcf6f2e 100644
--- a/arch/s390/configs/debug_defconfig
+++ b/arch/s390/configs/debug_defconfig
@@ -102,7 +102,7 @@ CONFIG_ZSMALLOC_STAT=y
CONFIG_DEFERRED_STRUCT_PAGE_INIT=y
CONFIG_IDLE_PAGE_TRACKING=y
CONFIG_PERCPU_STATS=y
-CONFIG_GUP_BENCHMARK=y
+CONFIG_GUP_TEST=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_PACKET_DIAG=m
diff --git a/arch/s390/configs/defconfig b/arch/s390/configs/defconfig
index 17d5df2c1eff..e2171a008809 100644
--- a/arch/s390/configs/defconfig
+++ b/arch/s390/configs/defconfig
@@ -95,7 +95,7 @@ CONFIG_ZSMALLOC_STAT=y
CONFIG_DEFERRED_STRUCT_PAGE_INIT=y
CONFIG_IDLE_PAGE_TRACKING=y
CONFIG_PERCPU_STATS=y
-CONFIG_GUP_BENCHMARK=y
+CONFIG_GUP_TEST=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_PACKET_DIAG=m
diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c
index aef2edff9959..8bc269c55fd3 100644
--- a/arch/s390/kernel/vdso.c
+++ b/arch/s390/kernel/vdso.c
@@ -62,17 +62,8 @@ static vm_fault_t vdso_fault(const struct vm_special_mapping *sm,
static int vdso_mremap(const struct vm_special_mapping *sm,
struct vm_area_struct *vma)
{
- unsigned long vdso_pages;
-
- vdso_pages = vdso64_pages;
-
- if ((vdso_pages << PAGE_SHIFT) != vma->vm_end - vma->vm_start)
- return -EINVAL;
-
- if (WARN_ON_ONCE(current->mm != vma->vm_mm))
- return -EFAULT;
-
current->mm->context.vdso_base = vma->vm_start;
+
return 0;
}

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