This is a note to let you know that I've just added the patch titled
tcm_loop: Set residual field for SCSI commands
to the 3.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
tcm_loop-set-residual-field-for-scsi-commands.patch
and it can be found in the queue-3.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 6cf3fa6918baab0c447f1206f1cef9166ad04864 Mon Sep 17 00:00:00 2001
From: Roland Dreier <[email protected]>
Date: Tue, 14 Feb 2012 15:30:31 -0800
Subject: tcm_loop: Set residual field for SCSI commands
From: Roland Dreier <[email protected]>
commit 6cf3fa6918baab0c447f1206f1cef9166ad04864 upstream.
If the target core signals an over- or under-run, tcm_loop should call
scsi_set_resid() to tell the SCSI midlayer about the residual data length.
The difference can be seen by doing something like
strace -eioctl sg_raw -r 1024 /dev/sda 8 0 0 0 1 0 > /dev/null
and looking at the "resid=" part of the SG_IO ioctl -- after this patch,
the field is correctly reported as 512.
Signed-off-by: Roland Dreier <[email protected]>
Signed-off-by: Nicholas Bellinger <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/target/loopback/tcm_loop.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/drivers/target/loopback/tcm_loop.c
+++ b/drivers/target/loopback/tcm_loop.c
@@ -866,6 +866,9 @@ static int tcm_loop_queue_data_in(struct
sc->result = SAM_STAT_GOOD;
set_host_byte(sc, DID_OK);
+ if ((se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) ||
+ (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT))
+ scsi_set_resid(sc, se_cmd->residual_count);
sc->scsi_done(sc);
return 0;
}
@@ -891,6 +894,9 @@ static int tcm_loop_queue_status(struct
sc->result = se_cmd->scsi_status;
set_host_byte(sc, DID_OK);
+ if ((se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) ||
+ (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT))
+ scsi_set_resid(sc, se_cmd->residual_count);
sc->scsi_done(sc);
return 0;
}
Patches currently in stable-queue which might be from [email protected] are
queue-3.2/ib-iser-post-initial-receive-buffers-before-sending-the-final-login-request.patch
queue-3.2/tcm_loop-set-residual-field-for-scsi-commands.patch
queue-3.2/iscsi-target-fix-iscsit_alloc_buffs-failure-cases.patch
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