3.2.46-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Shlomo Pongratz <shlo...@mellanox.com>
commit 3eccfdb01da58fbd0f789ae6ca61cee3769e26de upstream.
Fix two issues in OOO commands processing done at iscsit_attach_ooo_cmdsn.
Handle command serial numbers wrap around by using iscsi_sna_lt and not regular
comparisson.
The routine iterates until it finds an entry whose serial number is greater
than the serial number of
the new one, thus the new entry should be inserted before that entry and not
after.
Signed-off-by: Shlomo Pongratz <shlo...@mellanox.com>
Signed-off-by: Nicholas Bellinger <n...@linux-iscsi.org>
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
drivers/target/iscsi/iscsi_target_erl1.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/drivers/target/iscsi/iscsi_target_erl1.c
+++ b/drivers/target/iscsi/iscsi_target_erl1.c
@@ -824,7 +824,7 @@ static int iscsit_attach_ooo_cmdsn(
/*
* CmdSN is greater than the tail of the list.
*/
- if (ooo_tail->cmdsn < ooo_cmdsn->cmdsn)
+ if (iscsi_sna_lt(ooo_tail->cmdsn, ooo_cmdsn->cmdsn))
list_add_tail(&ooo_cmdsn->ooo_list,
&sess->sess_ooo_cmdsn_list);
else {
@@ -834,11 +834,12 @@ static int iscsit_attach_ooo_cmdsn(
*/
list_for_each_entry(ooo_tmp, &sess->sess_ooo_cmdsn_list,
ooo_list) {
- if (ooo_tmp->cmdsn < ooo_cmdsn->cmdsn)
+ if (iscsi_sna_lt(ooo_tmp->cmdsn,
ooo_cmdsn->cmdsn))
continue;
+ /* Insert before this entry */
list_add(&ooo_cmdsn->ooo_list,
- &ooo_tmp->ooo_list);
+ ooo_tmp->ooo_list.prev);
break;
}
}
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