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authorChristoph Hellwig <hch@lst.de>2022-01-22 09:15:10 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2022-01-22 09:33:38 +0300
commit1da0d94a3ec8c5f3793b7be8538b55e60ebeefe3 (patch)
treea2bbcb8160a67bc1ffb709fcb9d37be7849f1912 /include/linux/frontswap.h
parent633423a09cb5cfe61438283e1ce49c23cf4a0611 (diff)
downloadlinux-1da0d94a3ec8c5f3793b7be8538b55e60ebeefe3.tar.xz
frontswap: remove support for multiple ops
There is only a single instance of frontswap ops in the kernel, so simplify the frontswap code by removing support for multiple operations. Link: https://lkml.kernel.org/r/20211224062246.1258487-13-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>
Diffstat (limited to 'include/linux/frontswap.h')
-rw-r--r--include/linux/frontswap.h3
1 files changed, 1 insertions, 2 deletions
diff --git a/include/linux/frontswap.h b/include/linux/frontswap.h
index c5b2848d2240..a631bac12220 100644
--- a/include/linux/frontswap.h
+++ b/include/linux/frontswap.h
@@ -13,10 +13,9 @@ struct frontswap_ops {
int (*load)(unsigned, pgoff_t, struct page *); /* load a page */
void (*invalidate_page)(unsigned, pgoff_t); /* page no longer needed */
void (*invalidate_area)(unsigned); /* swap type just swapoff'ed */
- struct frontswap_ops *next; /* private pointer to next ops */
};
-extern void frontswap_register_ops(struct frontswap_ops *ops);
+int frontswap_register_ops(const struct frontswap_ops *ops);
extern void frontswap_init(unsigned type, unsigned long *map);
extern int __frontswap_store(struct page *page);