This is a note to let you know that I've just added the patch titled
target: Fix >= v3.9+ regression in PR APTPL + ALUA metadata write-out
to the 3.10-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:
target-fix-v3.9-regression-in-pr-aptpl-alua-metadata-write-out.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f730f9158f6ee7b5c4d892af6b51a72194445ea4 Mon Sep 17 00:00:00 2001
From: Gera Kazakov <gkazakov@xxxxxxx>
Date: Mon, 9 Sep 2013 15:47:06 -0700
Subject: target: Fix >= v3.9+ regression in PR APTPL + ALUA metadata write-out
From: Gera Kazakov <gkazakov@xxxxxxx>
commit f730f9158f6ee7b5c4d892af6b51a72194445ea4 upstream.
This patch fixes a >= v3.9+ regression in __core_scsi3_write_aptpl_to_file()
+ core_alua_write_tpg_metadata() write-out, where a return value of -EIO was
incorrectly being returned upon success.
This bug was originally introduced in:
commit 0e9b10a90f1c30f25dd6f130130240745ab14010
Author: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Date: Sat Feb 23 15:22:43 2013 -0500
target: writev() on single-element vector is pointless
However, given that the return of core_scsi3_update_and_write_aptpl()
was not used to determine if a command should be returned with non GOOD
status, this bug was not being triggered in PR logic until v3.11-rc1 by
commit:
commit 459f213ba162bd13e113d6f92a8fa6c780fd67ed
Author: Andy Grover <agrover@xxxxxxxxxx>
Date: Thu May 16 10:41:02 2013 -0700
target: Allocate aptpl_buf inside update_and_write_aptpl()
So, go ahead and only return -EIO if kernel_write() returned a
negative value.
Reported-by: Gera Kazakov <gkazakov@xxxxxxx>
Signed-off-by: Gera Kazakov <gkazakov@xxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Andy Grover <agrover@xxxxxxxxxx>
Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/target/target_core_alua.c | 2 +-
drivers/target/target_core_pr.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/target/target_core_alua.c
+++ b/drivers/target/target_core_alua.c
@@ -730,7 +730,7 @@ static int core_alua_write_tpg_metadata(
if (ret < 0)
pr_err("Error writing ALUA metadata file: %s\n", path);
fput(file);
- return ret ? -EIO : 0;
+ return (ret < 0) ? -EIO : 0;
}
/*
--- a/drivers/target/target_core_pr.c
+++ b/drivers/target/target_core_pr.c
@@ -1987,7 +1987,7 @@ static int __core_scsi3_write_aptpl_to_f
pr_debug("Error writing APTPL metadata file: %s\n", path);
fput(file);
- return ret ? -EIO : 0;
+ return (ret < 0) ? -EIO : 0;
}
static int
Patches currently in stable-queue which might be from gkazakov@xxxxxxx are
queue-3.10/target-fix-v3.9-regression-in-pr-aptpl-alua-metadata-write-out.patch
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