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BIO_SPLIT(9) The Linux VFS BIO_SPLIT(9)

NAME

bio_split - split a bio

SYNOPSIS

struct bio * bio_split(struct bio * bio, int sectors, gfp_t gfp, struct bio_set * bs);

ARGUMENTS

bio
bio to split

sectors

number of sectors to split from the front of bio

gfp

gfp mask

bs

bio set to allocate from

DESCRIPTION

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.

COPYRIGHT

April 2019 Kernel Hackers Manual 4.9.