diff options
| -rw-r--r-- | block/bio.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/block/bio.c b/block/bio.c index dbb0bc8e1ef7..ef88fa3afe4c 100644 --- a/block/bio.c +++ b/block/bio.c @@ -1692,12 +1692,15 @@ EXPORT_SYMBOL(bioset_init_from_src); /** * bio_alloc_kiocb - Allocate a bio from bio_set based on kiocb * @kiocb: kiocb describing the IO + * @nr_iovecs: number of iovecs to pre-allocate * @bs: bio_set to allocate from * * Description: * Like @bio_alloc_bioset, but pass in the kiocb. The kiocb is only * used to check if we should dip into the per-cpu bio_set allocation - * cache. The allocation uses GFP_KERNEL internally. + * cache. The allocation uses GFP_KERNEL internally. On return, the + * bio is marked BIO_PERCPU_CACHEABLE, and the final put of the bio + * MUST be done from process context, not hard/soft IRQ. * */ struct bio *bio_alloc_kiocb(struct kiocb *kiocb, unsigned short nr_vecs, |