bio_split — split a bio
struct bio * bio_split ( | struct bio * bio, |
| int sectors, | |
| gfp_t gfp, | |
struct bio_set * bs); |
biobio to split
sectors
number of sectors to split from the front of bio
gfpgfp mask
bsbio set to allocate from
Allocates and returns a new bio which represents sectors from the start of
bio, and updates bio to represent the remaining sectors.
Unless this is a discard request the newly allocated bio will point
to bio's bi_io_vec; it is the caller's responsibility to ensure that
bio is not freed before the split.