scsi: libiscsi: use sendpage_ok() in iscsi_tcp_segment_map()

In iscsci driver, iscsi_tcp_segment_map() uses the following code to
check whether the page should or not be handled by sendpage:
    if (!recv && page_count(sg_page(sg)) >= 1 && !PageSlab(sg_page(sg)))

The "page_count(sg_page(sg)) >= 1 && !PageSlab(sg_page(sg)" part is to
make sure the page can be sent to network layer's zero copy path. This
part is exactly what sendpage_ok() does.

This patch uses  use sendpage_ok() in iscsi_tcp_segment_map() to replace
the original open coded checks.

Signed-off-by: Coly Li <[email protected]>
Reviewed-by: Lee Duncan <[email protected]>
Acked-by: Martin K. Petersen <[email protected]>
Cc: Vasily Averin <[email protected]>
Cc: Cong Wang <[email protected]>
Cc: Mike Christie <[email protected]>
Cc: Chris Leech <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Hannes Reinecke <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

0 files changed, 0 insertions, 0 deletions