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mm: simplify free_highmem_page() and free_reserved_page()

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adjust_managed_page_count() as called by free_reserved_page() properly
handles pages in a highmem zone, so we can reuse it for
free_highmem_page().

We can now get rid of totalhigh_pages_inc() and simplify
free_reserved_page().

Link: https://lkml.kernel.org/r/20210126182113.19892-3-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Wei Yang <richard.weiyang@linux.alibaba.com>
Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Hildenbrand 2021-02-24 12:06:32 -08:00 • committed by Linus Torvalds
parent b3880c690b
commit a0cd7a7c4b
3 changed files with 2 additions and 30 deletions
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5
include/linux/highmem-internal.h
View file

@ -127,11 +127,6 @@ static inline unsigned long totalhigh_pages(void)
return (unsigned long)atomic_long_read(&_totalhigh_pages);
}
static inline void totalhigh_pages_inc(void)
{
atomic_long_inc(&_totalhigh_pages);
}
static inline void totalhigh_pages_add(long count)
{
atomic_long_add(count, &_totalhigh_pages);