linux-kernel - Re: [HPDD-discuss] [PATCH 2/11] Staging: lustre: fld: Use kzalloc and kfree

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Message-ID: <alpine.DEB.2.02.1505020800570.2073@localhost6.localdomain6>
Date:	Sat, 2 May 2015 08:02:02 +0200 (CEST)
From:	Julia Lawall <julia.lawall@...6.fr>
To:	"Drokin, Oleg" <oleg.drokin@...el.com>
cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
	"kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Julia Lawall <Julia.Lawall@...6.fr>,
	"HPDD-discuss@...ts.01.org" <HPDD-discuss@...1.01.org>,
	"Simmons, James A." <simmonsja@...l.gov>,
	Dan Carpenter <dan.carpenter@...cle.com>
Subject: Re: [HPDD-discuss] [PATCH 2/11] Staging: lustre: fld: Use kzalloc
 and kfree

> Yes, I imagine Julia will include that as the new lustre_kvzalloc() define
> to be used in all OBD_ALLOC_LARGE instances.
> I can provide the desired code if necessary (it's actually a bit less than trivial
> because in some cases we also have that numa-aware node thing).

Oleg,

If you could send a patch with the proper definition, that would be very
helpful, thanks.  When that is in place, I can update the uses.

thanks,
julia

> though if we are ok to review that later, then almost a copy of ext4 one would do like this:
> void *lustre_kvzalloc(size_t size, gfp_t flags)
> {
>        void *ret;
> 
>        ret = kzalloc(size, flags | __GFP_NOWARN);
>        if (!ret)
>                ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
>        return ret;
> }
> 
> 
> Bye,
>     Oleg
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