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frontswap: simplify frontswap_init

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Just use IS_ENABLED() and remove the __frontswap_init indirection.

Also remove the unused export.

Link: https://lkml.kernel.org/r/20211224062246.1258487-7-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Konrad Rzeszutek Wilk <Konrad.wilk@oracle.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Seth Jennings <sjenning@redhat.com>
Cc: Vitaly Wool <vitaly.wool@konsulko.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig 2022-01-21 22:14:51 -08:00 committed by Linus Torvalds
parent 3e8e1af63d
commit 1cf53c894d
3 changed files with 4 additions and 11 deletions
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9
include/linux/frontswap.h
View File

@ -26,7 +26,7 @@ struct frontswap_ops {
extern void frontswap_register_ops(struct frontswap_ops *ops);
extern bool __frontswap_test(struct swap_info_struct *, pgoff_t);
extern void __frontswap_init(unsigned type, unsigned long *map);
extern void frontswap_init(unsigned type, unsigned long *map);
extern int __frontswap_store(struct page *page);
extern int __frontswap_load(struct page *page);
extern void __frontswap_invalidate_page(unsigned, pgoff_t);
@ -107,11 +107,4 @@ static inline void frontswap_invalidate_area(unsigned type)
__frontswap_invalidate_area(type);
}
static inline void frontswap_init(unsigned type, unsigned long *map)
{
#ifdef CONFIG_FRONTSWAP
__frontswap_init(type, map);
#endif
}
#endif /* _LINUX_FRONTSWAP_H */

3
mm/frontswap.c
View File

@ -156,7 +156,7 @@ EXPORT_SYMBOL(frontswap_register_ops);
/*
* Called when a swap device is swapon'd.
*/
void __frontswap_init(unsigned type, unsigned long *map)
void frontswap_init(unsigned type, unsigned long *map)
{
struct swap_info_struct *sis = swap_info[type];
struct frontswap_ops *ops;
@ -179,7 +179,6 @@ void __frontswap_init(unsigned type, unsigned long *map)
for_each_frontswap_ops(ops)
ops->init(type);
}
EXPORT_SYMBOL(__frontswap_init);
bool __frontswap_test(struct swap_info_struct *sis,
pgoff_t offset)

3
mm/swapfile.c
View File

@ -2463,7 +2463,8 @@ static void enable_swap_info(struct swap_info_struct *p, int prio,
struct swap_cluster_info *cluster_info,
unsigned long *frontswap_map)
{
frontswap_init(p->type, frontswap_map);
if (IS_ENABLED(CONFIG_FRONTSWAP))
frontswap_init(p->type, frontswap_map);
spin_lock(&swap_lock);
spin_lock(&p->lock);
setup_swap_info(p, prio, swap_map, cluster_info);