NAME
bio_kmalloc - allocate a bio for I/O using kmalloc
SYNOPSIS
struct bio * bio_kmalloc(gfp_t gfp_mask, unsigned int nr_iovecs);
ARGUMENTS
gfp_mask
the GFP_ mask given to the slab allocator
nr_iovecs
number of iovecs to pre-allocate
DESCRIPTION
Allocate a new bio with nr_iovecs bvecs. If gfp_mask contains __GFP_WAIT, the allocation is guaranteed to succeed.