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mm: cleanup is_highmem()

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It is unnecessary to add CONFIG_HIGHMEM check in is_highmem(), which has
been done in is_highmem_idx(), and move is_highmem() close to
is_highmem_idx().  This has no functional impact.

Link: https://lkml.kernel.org/r/20220726131816.149075-1-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Kefeng Wang 2022-07-26 21:18:16 +08:00 committed by akpm
parent f6c3e1ae01
commit bb077c3ffd
1 changed files with 9 additions and 13 deletions
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22
include/linux/mmzone.h
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@ -1137,15 +1137,6 @@ static inline int is_highmem_idx(enum zone_type idx)
#endif
}
#ifdef CONFIG_ZONE_DMA
bool has_managed_dma(void);
#else
static inline bool has_managed_dma(void)
{
return false;
}
#endif
/**
* is_highmem - helper function to quickly check if a struct zone is a
* highmem zone or not. This is an attempt to keep references
@ -1155,13 +1146,18 @@ static inline bool has_managed_dma(void)
*/
static inline int is_highmem(struct zone *zone)
{
#ifdef CONFIG_HIGHMEM
return is_highmem_idx(zone_idx(zone));
#else
return 0;
#endif
}
#ifdef CONFIG_ZONE_DMA
bool has_managed_dma(void);
#else
static inline bool has_managed_dma(void)
{
return false;
}
#endif
/* These two functions are used to setup the per zone pages min values */
struct ctl_table;