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SubjectRe: [PATCH v11 19/33] mm/filemap: Add folio_lock()
Date
Matthew Wilcox (Oracle) <willy@infradead.org> wrote:

> This is like lock_page() but for use by callers who know they have a folio.
> Convert __lock_page() to be __folio_lock(). This saves one call to
> compound_head() per contended call to lock_page().
>
> Saves 455 bytes of text; mostly from improved register allocation and
> inlining decisions. __folio_lock is 59 bytes while __lock_page was 79.
>
> 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>
> Acked-by: Vlastimil Babka <vbabka@suse.cz>
> Reviewed-by: William Kucharski <william.kucharski@oracle.com>

Reviewed-by: David Howells <dhowells@redhat.com>

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