linux-kernel - Re: Can kmem_cache

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Message-Id: <200803291215.37108.nickpiggin@yahoo.com.au>
Date:	Sat, 29 Mar 2008 12:15:36 +1100
From:	Nick Piggin <nickpiggin@...oo.com.au>
To:	"Steve French" <smfrench@...il.com>
Cc:	lkml <linux-kernel@...r.kernel.org>
Subject: Re: Can kmem_cache_free block?

On Saturday 29 March 2008 06:23, Steve French wrote:
> Is kmem_cache_free safe to call while holding a spinlock (can
> kmem_cache_free ever block or recurse into a file system)?
>
> I see it trying to grab just another spinlock which is probably fine
> (but was worried whether any of the worker functions called a sem) ...
> my assumption is that it would be safe, but the man page doesn't
> mention when it can be used safely.

Yes you can call it from any context.

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