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| author | Baoquan He <bhe@redhat.com> | 2020-04-01 21:09:31 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-04-02 09:35:30 -0700 |
| commit | 3af776f601dc13e1cae1f0f461407533669cf666 (patch) | |
| tree | 9cac3175a153d17a2055209da23efe1a2dbcbb0a | |
| parent | e03d1f78341e8a16f6cb5be5dfcd37ddc31a6839 (diff) | |
| download | linux-stable-3af776f601dc13e1cae1f0f461407533669cf666.tar.gz linux-stable-3af776f601dc13e1cae1f0f461407533669cf666.tar.bz2 linux-stable-3af776f601dc13e1cae1f0f461407533669cf666.zip | |
mm/sparse.c: use kvmalloc/kvfree to alloc/free memmap for the classic sparse
This change makes populate_section_memmap()/depopulate_section_memmap
much simpler.
Suggested-by: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Wei Yang <richard.weiyang@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Link: http://lkml.kernel.org/r/20200316125450.GG3486@MiWiFi-R3L-srv
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/sparse.c | 27 |
1 files changed, 3 insertions, 24 deletions
diff --git a/mm/sparse.c b/mm/sparse.c index 55fe305e8d7b..f0705f4167cb 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -664,35 +664,14 @@ static void free_map_bootmem(struct page *memmap) struct page * __meminit populate_section_memmap(unsigned long pfn, unsigned long nr_pages, int nid, struct vmem_altmap *altmap) { - struct page *page, *ret; - unsigned long memmap_size = sizeof(struct page) * PAGES_PER_SECTION; - - page = alloc_pages(GFP_KERNEL|__GFP_NOWARN, get_order(memmap_size)); - if (page) - goto got_map_page; - - ret = vmalloc(memmap_size); - if (ret) - goto got_map_ptr; - - return NULL; -got_map_page: - ret = (struct page *)pfn_to_kaddr(page_to_pfn(page)); -got_map_ptr: - - return ret; + return kvmalloc(array_size(sizeof(struct page), + PAGES_PER_SECTION), GFP_KERNEL); } static void depopulate_section_memmap(unsigned long pfn, unsigned long nr_pages, struct vmem_altmap *altmap) { - struct page *memmap = pfn_to_page(pfn); - - if (is_vmalloc_addr(memmap)) - vfree(memmap); - else - free_pages((unsigned long)memmap, - get_order(sizeof(struct page) * PAGES_PER_SECTION)); + kvfree(pfn_to_page(pfn)); } static void free_map_bootmem(struct page *memmap) |