bio_iov_iter_get

Name:_iov_iter_get_pages - add user or kernel pages to a bio*@bio: bio to add pages to*@iter: iov iterator describing the region to be added* This takes either an iterator pointing to user memory, or one pointing to* kernel pages (BVEC iterator)

Proto:int bio_iov_iter_get_pages(struct bio *bio, struct iov_iter *iter)

Type:int

Parameter:

Type	Parameter	Name
struct bio *	bio
struct iov_iter *	iter

985

is_bvec = iov_iter_is_bvec(iter)

988

If WARN_ON_ONCE( how many bio_vec's ) Then Return -EINVAL

991

992

If is_bvec Then ret = __bio_iov_bvec_add_pages(bio, iter)

994

Else ret = __bio_iov_iter_get_pages - pin user or kernel pages and add them to a bio*@bio: bio to add pages to*@iter: iov iterator describing the region to be mapped* Pins pages from *iter and appends them to @bio's bvec array. The

996

When Not ret && iov_iter_count(iter) && Not _full - check if the bio is full*@bio: bio to check*@len: length of one segment to be added* Return true if @bio is full and one segment with @len bytes can't be* added to the bio, otherwise return false cycle

998

If is_bvec Then bio_set_flag(bio, BIO_NO_PAGE_REF)

1000

Return If how many bio_vec's Then 0 Else ret

**Caller**
Name	Describe
__blkdev_direct_IO
iomap_dio_bio_actor

Source code conversion tool public plug-in interface	X
Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion

Function report