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Michal Hocko 19809c2da2 mm, vmalloc: use __GFP_HIGHMEM implicitly ... __vmalloc* allows users to provide gfp flags for the underlying allocation. This API is quite popular $ git grep "=[[:space:]]__vmalloc\|return[[:space:]]*__vmalloc" | wc -l 77 The only problem is that many people are not aware that they really want to give __GFP_HIGHMEM along with other flags because there is really no reason to consume precious lowmemory on CONFIG_HIGHMEM systems for pages which are mapped to the kernel vmalloc space. About half of users don't use this flag, though. This signals that we make the API unnecessarily too complex. This patch simply uses __GFP_HIGHMEM implicitly when allocating pages to be mapped to the vmalloc space. Current users which add __GFP_HIGHMEM are simplified and drop the flag. Link: http://lkml.kernel.org/r/20170307141020.29107-1-mhocko@kernel.org Signed-off-by: Michal Hocko <mhocko@suse.com> Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: David Rientjes <rientjes@google.com> Cc: Cristopher Lameter <cl@linux.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		8 years ago
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bpf	mm, vmalloc: use __GFP_HIGHMEM implicitly	8 years ago
cgroup	Merge branch 'for-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	8 years ago
configs	config: android-base: enable hardened usercopy and kernel ASLR	8 years ago
debug	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/debug.h>	8 years ago
events	Merge branch 'perf/urgent' into perf/core, to pick up fixes	8 years ago
gcov	…
irq	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	8 years ago
livepatch	Merge branches 'for-4.12/upstream' and 'for-4.12/klp-hybrid-consistency-model' into for-linus	8 years ago
locking	Merge branch 'akpm' (patches from Andrew)	8 years ago
power	Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	8 years ago
printk	crash: move crashkernel parsing and vmcore related code under CONFIG_CRASH_CORE	8 years ago
rcu	rcu/tracing: Add rcu_disabled to denote when rcu_irq_enter() will not work	8 years ago
sched	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	8 years ago
time	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	8 years ago
trace	New features for this release:	8 years ago
.gitignore	…
Kconfig.freezer	…
Kconfig.hz	…
Kconfig.locks	…
Kconfig.preempt	…
Makefile	crash: move crashkernel parsing and vmcore related code under CONFIG_CRASH_CORE	8 years ago
acct.c	sched/headers: Prepare to move cputime functionality from <linux/sched.h> into <linux/sched/cputime.h>	8 years ago
async.c	…
audit.c	Merge branch 'stable-4.12' of git://git.infradead.org/users/pcmoore/audit	8 years ago
audit.h	audit: Use timespec64 to represent audit timestamps	8 years ago
audit_fsnotify.c	Merge branch 'fsnotify' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	8 years ago
audit_tree.c	Merge branch 'fsnotify' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	8 years ago
audit_watch.c	Merge branch 'fsnotify' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	8 years ago
auditfilter.c	audit: kernel generated netlink traffic should have a portid of 0	8 years ago
auditsc.c	Merge branch 'fsnotify' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	8 years ago
backtracetest.c	…
bounds.c	…
capability.c	capability: export has_capability	8 years ago
compat.c	time: Change k_clock nsleep() to use timespec64	8 years ago
configs.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	8 years ago
context_tracking.c	…
cpu.c	Merge branch 'linus' into locking/core, to pick up fixes	8 years ago
cpu_pm.c	…
crash_core.c	ia64: reuse append_elf_note() and final_note() functions	8 years ago
crash_dump.c	…
cred.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/coredump.h>	8 years ago
delayacct.c	sched/headers: Prepare to move cputime functionality from <linux/sched.h> into <linux/sched/cputime.h>	8 years ago
dma.c	…
elfcore.c	…
exec_domain.c	…
exit.c	userfaultfd: non-cooperative: rollback userfaultfd_exit	8 years ago
extable.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	8 years ago
fork.c	mm, vmalloc: use __GFP_HIGHMEM implicitly	8 years ago
freezer.c	…
futex.c	futex: Clarify mark_wake_futex memory barrier usage	8 years ago
futex_compat.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	8 years ago
groups.c	mm, vmalloc: use __GFP_HIGHMEM implicitly	8 years ago
hung_task.c	kernel/hung_task.c: defer showing held locks	8 years ago
irq_work.c	…
jump_label.c	This release has no new tracing features, just clean ups, minor fixes	8 years ago
kallsyms.c	bpf: make jited programs visible in traces	8 years ago
kcmp.c	…
kcov.c	kcov: simplify interrupt check	8 years ago
kexec.c	…
kexec_core.c	ia64: reuse append_elf_note() and final_note() functions	8 years ago
kexec_file.c	kexec, x86/purgatory: Unbreak it and clean it up	8 years ago
kexec_internal.h	kexec, x86/purgatory: Unbreak it and clean it up	8 years ago
kmod.c	sched/headers, vfs/execve: Prepare to move the do_execve*() prototypes from <linux/sched.h> to <linux/binfmts.h>	8 years ago
kprobes.c	powerpc updates for 4.12 part 1.	8 years ago
ksysfs.c	crash: move crashkernel parsing and vmcore related code under CONFIG_CRASH_CORE	8 years ago
kthread.c	cgroup, kthread: close race window where new kthreads can be migrated to non-root cgroups	8 years ago
latencytop.c	sched/headers: Prepare to move sched_info_on() and force_schedstat_enabled() from <linux/sched.h> to <linux/sched/stat.h>	8 years ago
membarrier.c	Fix: Disable sys_membarrier when nohz_full is enabled	8 years ago
memremap.c	mm, zone_device: Replace {get, put}_zone_device_page() with a single reference to fix pmem crash	8 years ago
module-internal.h	…
module.c	mm, vmalloc: use __GFP_HIGHMEM implicitly	8 years ago
module_signing.c	…
notifier.c	kernel/notifier.c: simplify expression	8 years ago
nsproxy.c	perf: Add PERF_RECORD_NAMESPACES to include namespaces related info	8 years ago
padata.c	padata: get_next is never NULL	8 years ago
panic.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/debug.h>	8 years ago
params.c	boot/param: Move next_arg() function to lib/cmdline.c for later reuse	8 years ago
pid.c	pidns: disable pid allocation if pid_ns_prepare_proc() is failed in alloc_pid()	8 years ago
pid_namespace.c	pidns: expose task pid_ns_for_children to userspace	8 years ago
profile.c	sched/headers: Prepare to move sched_info_on() and force_schedstat_enabled() from <linux/sched.h> to <linux/sched/stat.h>	8 years ago
ptrace.c	ptrace: fix PTRACE_LISTEN race corrupting task->state	8 years ago
range.c	…
reboot.c	…
relay.c	Merge branch 'work.splice' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	8 years ago
resource.c	…
seccomp.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>	8 years ago
signal.c	signal: Make kill_proc_info static	8 years ago
smp.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/idle.h>	8 years ago
smpboot.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task.h>	8 years ago
smpboot.h	…
softirq.c	sched/core: Remove 'task' parameter and rename tsk_restore_flags() to current_restore_flags()	8 years ago
stacktrace.c	stacktrace/x86: add function for detecting reliable stack traces	8 years ago
stop_machine.c	…
sys.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	8 years ago
sys_ni.c	move aio compat to fs/aio.c	8 years ago
sysctl.c	proc/sysctl: fix the int overflow for jiffies conversion	8 years ago
sysctl_binary.c	net: Remove NET_CORE_BUDGET_USECS from sysctl binary interface.	8 years ago
task_work.c	…
taskstats.c	taskstats: add e/u/stime for TGID command	8 years ago
test_kprobes.c	…
torture.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h>	8 years ago
tracepoint.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task.h>	8 years ago
tsacct.c	sched/headers: Prepare to move cputime functionality from <linux/sched.h> into <linux/sched/cputime.h>	8 years ago
ucount.c	ucount: Remove the atomicity from ucount->count	8 years ago
uid16.c	sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>	8 years ago
up.c	…
user-return-notifier.c	…
user.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/user.h>	8 years ago
user_namespace.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>	8 years ago
utsname.c	sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h>	8 years ago
utsname_sysctl.c	sched/headers: Remove <linux/rwsem.h> from <linux/sched.h>	8 years ago
watchdog.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/debug.h>	8 years ago
watchdog_hld.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/debug.h>	8 years ago
workqueue.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	8 years ago
workqueue_internal.h	…