[SCSI] libfc: Remove page flags check for sglist

I don't believe this check is needed any more in the current kernel, which,
if I understand correctly, is for compound page where only the first page
is supposed to get ref-counted.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 0 insertions, 27 deletions

diff --git a/drivers/scsi/libfc/fc_fcp.c b/drivers/scsi/libfc/fc_fcp.c
index 2069edf80268..7d5ffcbbf39b 100644
--- a/drivers/scsi/libfc/fc_fcp.c
+++ b/drivers/scsi/libfc/fc_fcp.c
@@ -507,33 +507,6 @@ static int fc_fcp_send_data(struct fc_fcp_pkt *fsp, struct fc_seq *seq,
         f_ctl = FC_FC_REL_OFF;
         WARN_ON(!seq);
 
-        /*
-         * If a get_page()/put_page() will fail, don't use sg lists
-         * in the fc_frame structure.
-         *
-         * The put_page() may be long after the I/O has completed
-         * in the case of FCoE, since the network driver does it
-         * via free_skb().  See the test in free_pages_check().
-         *
-         * Test this case with 'dd </dev/zero >/dev/st0 bs=64k'.
-         */
-        if (using_sg) {
-                for (sg = scsi_sglist(sc); sg; sg = sg_next(sg)) {
-                        if (page_count(sg_page(sg)) == 0 ||
-                            (sg_page(sg)->flags & (1 << PG_lru |
-                                                   1 << PG_private |
-                                                   1 << PG_locked |
-                                                   1 << PG_active |
-                                                   1 << PG_slab |
-                                                   1 << PG_swapcache |
-                                                   1 << PG_writeback |
-                                                   1 << PG_reserved |
-                                                   1 << PG_buddy))) {
-                                using_sg = 0;
-                                break;
-                        }
-                }
-        }
         sg = scsi_sglist(sc);
 
         while (remaining > 0 && sg) {