a_ops->readpages() is only ever used for read-ahead. Ensure that we pass this information down to the block layer. Signed-off-by: Jens Axboe <axboe@xxxxxxxxx> --- fs/btrfs/extent_io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index cce6087d6880..440e2bdc518d 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -3116,7 +3116,7 @@ static inline void __do_contiguous_readpages(struct extent_io_tree *tree, for (index = 0; index < nr_pages; index++) { __do_readpage(tree, pages[index], btrfs_get_extent, em_cached, - bio, 0, bio_flags, 0, prev_em_start); + bio, 0, bio_flags, REQ_RAHEAD, prev_em_start); put_page(pages[index]); } } -- 2.17.1