Re: [PATCH] ia64: including <asm/signal.h> alone causes compilation errors

[Christoph Hellwig]

On Mon, Jan 09, 2006 at 12:15:14PM -0500, Jeff Mahoney wrote:
> 
>  Including *just* <asm/signal.h> on ia64 will result in a compilation failure,
>  where it will succeed on every other architecture.
> 
>  Every other arch includes <linux/compiler.h> either directly or via
>  <linux/types.h> at the top of <asm-*/signal.h>. ia64 includes
>  <linux/types.h> after including <asm-generic/signal.h>, which causes
>  the __user in <asm-generic/signal.h> to get passed through untouched, causing
>  compilation errors.
> 
>  This patch moves the #include <linux/types.h> up to the beginning of signal.h,
>  as found on every other arch.
> 
>  A specific example of where this behavior is observed is the recent addition
>  of OCFS2. fs/ocfs2/cluster/userdlm.c seems alone in only including
>  <asm/signal.h>, which seems to be perfectly valid.

Generally you should only include <asm/signal.h> via <linux/signal.h>, which gets
<linux/compiler.h> via <linux/spinlock.h>

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