Messages in this thread |  | | | Date | Mon, 11 Jan 2010 13:12:41 +0100 | | Subject | Re: [PATCH] [1/9] Add rcustring ADT for RCU protected strings v2 | | From | Bert Wesarg <> |
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On Tue, Jan 5, 2010 at 03:15, Andi Kleen <andi@firstfloor.org> wrote: > Index: linux-2.6.33-rc2-ak/lib/rcustring.c > =================================================================== > --- /dev/null > +++ linux-2.6.33-rc2-ak/lib/rcustring.c
[ . . . ]
> +/* > + * Get a local private copy of a RCU protected string. > + * Mostly useful to get a string that is stable while sleeping. > + * Caller must free returned string. > + */ > +char *access_rcu_string(char **str, int size, gfp_t gfp) > +{ > + char *copy = kmalloc(size, gfp); No check of return value from kmalloc()?
> + if (!str) > + return NULL; > + rcu_read_lock(); > + strlcpy(copy, rcu_dereference(*str), size); > + rcu_read_unlock(); > + return copy; > +} > +EXPORT_SYMBOL(access_rcu_string); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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