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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2020-12-07 23:44:35 +0300 |
|---|---|---|
| committer | Matthew Wilcox (Oracle) <willy@infradead.org> | 2021-09-27 16:27:30 +0300 |
| commit | 4e1364286d0a2dd384bceb6db6185b99c0e2c0bc (patch) | |
| tree | 57e1d10680fc3900a884c40f94dcb308bf5d5123 /include/linux/pagemap.h | |
| parent | 2f52578f9c64d7d9a96ab81c243cc20804fabf2b (diff) | |
| download | linux-4e1364286d0a2dd384bceb6db6185b99c0e2c0bc.tar.xz | |
mm/filemap: Add folio_unlock()
Convert unlock_page() to call folio_unlock(). By using a folio we
avoid a call to compound_head(). This shortens the function from 39
bytes to 25 and removes 4 instructions on x86-64. Because we still
have unlock_page(), it's a net increase of 16 bytes of text for the
kernel as a whole, but any path that uses folio_unlock() will execute
4 fewer instructions.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jeff Layton <jlayton@kernel.org>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: David Howells <dhowells@redhat.com>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Diffstat (limited to 'include/linux/pagemap.h')
| -rw-r--r-- | include/linux/pagemap.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 0ca96a40fabe..8087921641a3 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -657,7 +657,8 @@ extern int __lock_page_killable(struct page *page); extern int __lock_page_async(struct page *page, struct wait_page_queue *wait); extern int __lock_page_or_retry(struct page *page, struct mm_struct *mm, unsigned int flags); -extern void unlock_page(struct page *page); +void unlock_page(struct page *page); +void folio_unlock(struct folio *folio); /* * Return true if the page was successfully locked |