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Commit acef2e55 authored by Paolo 'Blaisorblade' Giarrusso's avatar Paolo 'Blaisorblade' Giarrusso Committed by Linus Torvalds
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[PATCH] uml: commentary about forking flag 



Add some commentary about UML internals, for a strange trick.

Signed-off-by: default avatarPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent ffa0aea6

include/asm-um/processor-generic.h

+4 −0
Original line number Diff line number Diff line
@@ -17,6 +17,10 @@ struct task_struct; 
struct mm_struct;



struct thread_struct {

	/* This flag is set to 1 before calling do_fork (and analyzed in

	 * copy_thread) to mark that we are begin called from userspace (fork /

	 * vfork / clone), and reset to 0 after. It is left to 0 when called

	 * from kernelspace (i.e. kernel_thread() or fork_idle(), as of 2.6.11). */

	int forking;

	int nsyscalls;

	struct pt_regs regs;