target/pscsi: Reject cross page boundary case in pscsi_map_sg
authorAsias He <asias@redhat.com>
Tue, 19 Mar 2013 04:55:16 +0000 (12:55 +0800)
committerNicholas Bellinger <nab@linux-iscsi.org>
Wed, 20 Mar 2013 00:31:14 +0000 (17:31 -0700)
commit8f27d487bcc2bd603c2d87e1729abcbc301f15db
tree64ee7f44b5347c096cac35dcf0f1485707303f8c
parentf002a24388cc460c8a9be7d446a9871f7c9d52b6
target/pscsi: Reject cross page boundary case in pscsi_map_sg

We can only have one page of data in each sg element, so we can not
cross a page boundary. Fail this case.

The 'while (len > 0 && data_len > 0) {}' loop is not necessary. The loop
can only be executed once.

Signed-off-by: Asias He <asias@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
drivers/target/target_core_pscsi.c