| Message ID | 1358755528-31421-2-git-send-email-asias@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c index 3720604..ca35c16 100644 --- a/drivers/vhost/tcm_vhost.c +++ b/drivers/vhost/tcm_vhost.c @@ -77,6 +77,12 @@ static struct workqueue_struct *tcm_vhost_workqueue; static DEFINE_MUTEX(tcm_vhost_mutex); static LIST_HEAD(tcm_vhost_list); +static inline int iov_num_pages(struct iovec *iov) +{ + return (PAGE_ALIGN((unsigned long)iov->iov_base + iov->iov_len) - + ((unsigned long)iov->iov_base & PAGE_MASK)) >> PAGE_SHIFT; +} + static int tcm_vhost_check_true(struct se_portal_group *se_tpg) { return 1;
Add a helper to calculate the number of pages needed for a iov entry. Signed-off-by: Asias He <asias@redhat.com> --- drivers/vhost/tcm_vhost.c | 6 ++++++ 1 file changed, 6 insertions(+)