[RESEND PATCH V5 31/33] block: bio: pass segments to bio if bio_add_page() is bypassed

Under some situations, such as block direct I/O, we can't use bio_add_page() for merging pages into multipage bvec, so a new function is implemented for converting page array into one segment array, then these cases can benefit from multipage bvec too. Signed-off-by: Ming Lei

[RESEND PATCH V5 31/33] block: bio: pass segments to bio if bio_add_page() is bypassed

Under some situations, such as block direct I/O, we can't use bio_add_page() for merging pages into multipage bvec, so a new function is implemented for converting page array into one segment array, then these cases can benefit from multipage bvec too. Signed-off-by: Ming Lei --- block/bio.c |