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Code Issues Releases Wiki Activity

mm/zsmalloc: get rid of PAGE_MASK 

Use offset_in_page() macro instead of 'val & ~PAGE_MASK'

Link: https://lkml.kernel.org/r/20230516095029.49036-2-avromanov@sberdevices.ru
Signed-off-by: Alexey Romanov <avromanov@sberdevices.ru>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Alexey Romanov 2023-05-16 12:50:29 +03:00 committed by Andrew Morton
parent b758fe6df5
commit f24f66eef5
1 changed files with 6 additions and 6 deletions
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12
mm/zsmalloc.c
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@ -1341,7 +1341,7 @@ void *zs_map_object(struct zs_pool *pool, unsigned long handle,
spin_unlock(&pool->lock);
class = zspage_class(pool, zspage);
off = (class->size * obj_idx) & ~PAGE_MASK;
off = offset_in_page(class->size * obj_idx);
local_lock(&zs_map_area.lock);
area = this_cpu_ptr(&zs_map_area);
@ -1381,7 +1381,7 @@ void zs_unmap_object(struct zs_pool *pool, unsigned long handle)
obj_to_location(obj, &page, &obj_idx);
zspage = get_zspage(page);
class = zspage_class(pool, zspage);
off = (class->size * obj_idx) & ~PAGE_MASK;
off = offset_in_page(class->size * obj_idx);
area = this_cpu_ptr(&zs_map_area);
if (off + class->size <= PAGE_SIZE)
@ -1438,7 +1438,7 @@ static unsigned long obj_malloc(struct zs_pool *pool,
offset = obj * class->size;
nr_page = offset >> PAGE_SHIFT;
m_offset = offset & ~PAGE_MASK;
m_offset = offset_in_page(offset);
m_page = get_first_page(zspage);
for (i = 0; i < nr_page; i++)
@ -1548,7 +1548,7 @@ static void obj_free(int class_size, unsigned long obj, unsigned long *handle)
void *vaddr;
obj_to_location(obj, &f_page, &f_objidx);
f_offset = (class_size * f_objidx) & ~PAGE_MASK;
f_offset = offset_in_page(class_size * f_objidx);
zspage = get_zspage(f_page);
vaddr = kmap_atomic(f_page);
@ -1640,8 +1640,8 @@ static void zs_object_copy(struct size_class *class, unsigned long dst,
obj_to_location(src, &s_page, &s_objidx);
obj_to_location(dst, &d_page, &d_objidx);
s_off = (class->size * s_objidx) & ~PAGE_MASK;
d_off = (class->size * d_objidx) & ~PAGE_MASK;
s_off = offset_in_page(class->size * s_objidx);
d_off = offset_in_page(class->size * d_objidx);
if (s_off + class->size > PAGE_SIZE)
s_size = PAGE_SIZE - s_off;