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4f66170119
Allow callers of __filemap_get_folio() to specify a preferred folio order in the FGP flags. This is only honoured in the FGP_CREATE path; if there is already a folio in the page cache that covers the index, we will return it, no matter what its order is. No create-around is attempted; we will only create folios which start at the specified index. Unmodified callers will continue to allocate order 0 folios. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
841 lines
25 KiB
841 lines
25 KiB