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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2022-06-17 18:49:59 +0100 |
|---|---|---|
| committer | akpm <akpm@linux-foundation.org> | 2022-07-03 18:08:45 -0700 |
| commit | e3c4cebf3f9db8c9150eb1982da7e353d9938bed (patch) | |
| tree | d61a632c2aad724283bb56eb173cc4d9b8707b04 /include/linux/pagemap.h | |
| parent | a83f0551f49682c81444d682053d49f9dfcbe5fa (diff) | |
| download | lwn-e3c4cebf3f9db8c9150eb1982da7e353d9938bed.tar.gz lwn-e3c4cebf3f9db8c9150eb1982da7e353d9938bed.zip | |
mm: add folios_put()
Patch series "Convert the swap code to be more folio-based".
There's still more to do with the swap code, but this reaps a lot of the
folio benefit. More than 4kB of kernel text saved (with the UEK7 kernel
config). I don't know how much that's going to translate into CPU
savings, but some of those compound_head() calls are on every page free,
so it should be noticable. It might even be noticable just from an
I-cache consumption perspective.
This patch (of 22):
This is just a wrapper around release_pages() for now. Place the
prototype in mm.h along with folio_put() and folio_put_refs().
Link: https://lkml.kernel.org/r/20220617175020.717127-1-willy@infradead.org
Link: https://lkml.kernel.org/r/20220617175020.717127-2-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/pagemap.h')
| -rw-r--r-- | include/linux/pagemap.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index ce96866fbec4..c399a9c5da7d 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -345,8 +345,6 @@ static inline void filemap_nr_thps_dec(struct address_space *mapping) #endif } -void release_pages(struct page **pages, int nr); - struct address_space *page_mapping(struct page *); struct address_space *folio_mapping(struct folio *); struct address_space *swapcache_mapping(struct folio *); |