bio_alloc_bioset

Langue: en

Autres versions - même langue

Version: October 2010 (fedora - 01/12/10)

Section: 9 (Appels noyau Linux)

Sommaire

NAME

bio_alloc_bioset - allocate a bio for I/O

SYNOPSIS

struct bio * bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set * bs);

ARGUMENTS

gfp_mask

the GFP_ mask given to the slab allocator

nr_iovecs

number of iovecs to pre-allocate

bs

the bio_set to allocate from.

DESCRIPTION

bio_alloc_bioset will try its own mempool to satisfy the allocation. If __GFP_WAIT is set then we will block on the internal pool waiting for a struct bio to become free.

Note that the caller must set ->bi_destructor on successful return of a bio, to do the appropriate freeing of the bio once the reference count drops to zero.