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Matthew Wilcox (Oracle) authored
Add filemap_get_read_batch() which returns the head pages which represent a contiguous array of bytes in the file. It also stops when encountering a page marked as Readahead or !Uptodate (but does return that page) so it can be handled appropriately by filemap_get_pages(). That lets us remove the loop in filemap_get_pages() and check only the last page. Link: https://lkml.kernel.org/r/20210122160140.223228-5-willy@infradead.orgSigned-off-by:
Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by:
Kent Overstreet <kent.overstreet@gmail.com> Reviewed-by:
Christoph Hellwig <hch@lst.de> Cc: Miaohe Lin <linmiaohe@huawei.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
cbd59c48