linux-kernel - Re: [PATCH] drivers/scsi/fnic/fnic

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Message-ID: <CAJr6mf1Og4uNG3gOu56EBrm+2MQGg9=SZ2mCn9hQ=+8Er-WkBw@mail.gmail.com>
Date:   Tue, 13 Nov 2018 21:34:59 +0530
From:   Sabyasachi Gupta <sabyasachi.linux@...il.com>
To:     jthumshirn@...e.de
Cc:     john.garry@...wei.com, satishkh@...co.com, sebaddel@...co.com,
        kartilak@...co.com, jejb@...ux.vnet.ibm.com,
        martin.petersen@...cle.com,
        Souptick Joarder <jrdr.linux@...il.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Brajeswar Ghosh <brajeswar.linux@...il.com>
Subject: Re: [PATCH] drivers/scsi/fnic/fnic_trace.c: Use vzalloc

On Tue, Nov 13, 2018 at 9:23 PM Johannes Thumshirn <jthumshirn@...e.de> wrote:
>
> On 13/11/2018 16:44, John Garry wrote:
> > On 13/11/2018 15:08, Sabyasachi Gupta wrote:
> >> Replaced vmalloc + memset with vzalloc
> >>
> >> Signed-off-by: Sabyasachi Gupta <sabyasachi.linux@...il.com>
> >> ---
> >>  drivers/scsi/fnic/fnic_trace.c | 4 ++--
> >>  1 file changed, 2 insertions(+), 2 deletions(-)
> >>
> >> diff --git a/drivers/scsi/fnic/fnic_trace.c
> >> b/drivers/scsi/fnic/fnic_trace.c
> >> index 8271785..129ab27 100644
> >> --- a/drivers/scsi/fnic/fnic_trace.c
> >> +++ b/drivers/scsi/fnic/fnic_trace.c
> >> @@ -468,14 +468,14 @@ int fnic_trace_buf_init(void)
> >>      fnic_max_trace_entries = (trace_max_pages * PAGE_SIZE)/
> >>                        FNIC_ENTRY_SIZE_BYTES;
> >>
> >> -    fnic_trace_buf_p = (unsigned long)vmalloc((trace_max_pages *
> >> PAGE_SIZE));
> >> +    fnic_trace_buf_p = (unsigned long)vzalloc((trace_max_pages *
> >> +                                PAGE_SIZE));
> >
> > If you remove the extra brackets in vzalloc() argument then you may not
> > spill onto the next line.
>
> And remove the unnecessary cast. vzalloc() (just like vmalloc()) returns
> a void*, so no reason to cast it.
>
> --
> Johannes Thumshirn                                        SUSE Labs
> jthumshirn@...e.de                                +49 911 74053 689
> SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
> GF: Felix Imendörffer, Jane Smithard, Graham Norton
> HRB 21284 (AG Nürnberg)
> Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850
 I will remove it and send v2