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authorMatthew Wilcox (Oracle) <willy@infradead.org>2019-09-23 15:34:30 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-09-24 15:54:08 -0700
commitd8c6546b1aea843fbeb4d54a1202f1adda6504be (patch)
tree4b0fcc4a1afc9342472d59293b50fce20f2d70e7 /arch
parent94ad9338109fe9d0b8a4a16828719dd6dcaee4c2 (diff)
mm: introduce compound_nr()
Replace 1 << compound_order(page) with compound_nr(page). Minor improvements in readability. Link: http://lkml.kernel.org/r/20190721104612.19120-4-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mm/flush.c4
-rw-r--r--arch/powerpc/mm/hugetlbpage.c2
2 files changed, 3 insertions, 3 deletions
diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c
index 4c7ebe094a83..6d89db7895d1 100644
--- a/arch/arm/mm/flush.c
+++ b/arch/arm/mm/flush.c
@@ -208,13 +208,13 @@ void __flush_dcache_page(struct address_space *mapping, struct page *page)
} else {
unsigned long i;
if (cache_is_vipt_nonaliasing()) {
- for (i = 0; i < (1 << compound_order(page)); i++) {
+ for (i = 0; i < compound_nr(page); i++) {
void *addr = kmap_atomic(page + i);
__cpuc_flush_dcache_area(addr, PAGE_SIZE);
kunmap_atomic(addr);
}
} else {
- for (i = 0; i < (1 << compound_order(page)); i++) {
+ for (i = 0; i < compound_nr(page); i++) {
void *addr = kmap_high_get(page + i);
if (addr) {
__cpuc_flush_dcache_area(addr, PAGE_SIZE);
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index a8953f108808..73d4873fc7f8 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -667,7 +667,7 @@ void flush_dcache_icache_hugepage(struct page *page)
BUG_ON(!PageCompound(page));
- for (i = 0; i < (1UL << compound_order(page)); i++) {
+ for (i = 0; i < compound_nr(page); i++) {
if (!PageHighMem(page)) {
__flush_dcache_icache(page_address(page+i));
} else {