[PATCH v3 41/55] iscsi: Assume "sendpage" is okay in iscsi_tcp_segment_map()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



As iscsi is now using sendmsg() with MSG_SPLICE_PAGES rather than sendpage,
assume that sendpage_ok() will return true in iscsi_tcp_segment_map() and
leave it to TCP to copy the data if not.

Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
cc: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx>
cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
cc: Eric Dumazet <edumazet@xxxxxxxxxx>
cc: Jakub Kicinski <kuba@xxxxxxxxxx>
cc: Paolo Abeni <pabeni@xxxxxxxxxx>
cc: Jens Axboe <axboe@xxxxxxxxx>
cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
cc: linux-scsi@xxxxxxxxxxxxxxx
cc: target-devel@xxxxxxxxxxxxxxx
cc: netdev@xxxxxxxxxxxxxxx
---
 drivers/scsi/libiscsi_tcp.c | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/drivers/scsi/libiscsi_tcp.c b/drivers/scsi/libiscsi_tcp.c
index c182aa83f2c9..07ba0d864820 100644
--- a/drivers/scsi/libiscsi_tcp.c
+++ b/drivers/scsi/libiscsi_tcp.c
@@ -128,18 +128,11 @@ static void iscsi_tcp_segment_map(struct iscsi_segment *segment, int recv)
 	 * coalescing neighboring slab objects into a single frag which
 	 * triggers one of hardened usercopy checks.
 	 */
-	if (!recv && sendpage_ok(sg_page(sg)))
+	if (!recv)
 		return;
 
-	if (recv) {
-		segment->atomic_mapped = true;
-		segment->sg_mapped = kmap_atomic(sg_page(sg));
-	} else {
-		segment->atomic_mapped = false;
-		/* the xmit path can sleep with the page mapped so use kmap */
-		segment->sg_mapped = kmap(sg_page(sg));
-	}
-
+	segment->atomic_mapped = true;
+	segment->sg_mapped = kmap_atomic(sg_page(sg));
 	segment->data = segment->sg_mapped + sg->offset + segment->sg_offset;
 }
 




[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [NTFS 3]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [NTFS 3]     [Samba]     [Device Mapper]     [CEPH Development]

  Powered by Linux