netdev - Re: [PATCH bpf-next v3 5/5] error-injection: Support fault injection framework

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Date:   Wed, 10 Jan 2018 10:42:50 -0500
From:   Josef Bacik <josef@...icpanda.com>
To:     Masami Hiramatsu <mhiramat@...nel.org>
Cc:     Alexei Starovoitov <ast@...com>, Josef Bacik <jbacik@...com>,
        rostedt@...dmis.org, mingo@...hat.com, davem@...emloft.net,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        ast@...nel.org, kernel-team@...com, daniel@...earbox.net,
        linux-btrfs@...r.kernel.org, darrick.wong@...cle.com,
        Josef Bacik <josef@...icpanda.com>,
        Akinobu Mita <akinobu.mita@...il.com>
Subject: Re: [PATCH bpf-next v3 5/5] error-injection: Support fault injection
 framework

On Wed, Jan 10, 2018 at 07:19:05PM +0900, Masami Hiramatsu wrote:
> Support in-kernel fault-injection framework via debugfs.
> This allows you to inject a conditional error to specified
> function using debugfs interfaces.
> 
> Here is the result of test script described in
> Documentation/fault-injection/fault-injection.txt
> 
>   ===========
>   # ./test_fail_function.sh
>   1+0 records in
>   1+0 records out
>   1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0227404 s, 46.1 MB/s
>   btrfs-progs v4.4
>   See http://btrfs.wiki.kernel.org for more information.
> 
>   Label:              (null)
>   UUID:               bfa96010-12e9-4360-aed0-42eec7af5798
>   Node size:          16384
>   Sector size:        4096
>   Filesystem size:    1001.00MiB
>   Block group profiles:
>     Data:             single            8.00MiB
>     Metadata:         DUP              58.00MiB
>     System:           DUP              12.00MiB
>   SSD detected:       no
>   Incompat features:  extref, skinny-metadata
>   Number of devices:  1
>   Devices:
>      ID        SIZE  PATH
>       1  1001.00MiB  /dev/loop2
> 
>   mount: mount /dev/loop2 on /opt/tmpmnt failed: Cannot allocate memory
>   SUCCESS!
>   ===========
> 
> 
> Signed-off-by: Masami Hiramatsu <mhiramat@...nel.org>

Reviewed-by: Josef Bacik <jbacik@...com>

Thanks,

Josef