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uml: simplify helper stack handling

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run_helper and run_helper_thread had arguments which were the same in all
callers.  run_helper's stack_out was always NULL and run_helper_thread's
stack_order was always 0.  These are now gone, and the constants folded
into the code.

Also fixed leaks of the helper stack in the AIO and SIGIO code.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeff Dike
2007-07-15 23:38:56 -07:00
committed by Linus Torvalds
parent 42a359e31a
commit c43990162f
13 changed files with 36 additions and 37 deletions
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6
arch/um/include/os.h
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@@ -239,11 +239,9 @@ extern unsigned long __do_user_copy(void *to, const void *from, int n,
/* execvp.c */
extern int execvp_noalloc(char *buf, const char *file, char *const argv[]);
/* helper.c */
extern int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv,
unsigned long *stack_out);
extern int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv);
extern int run_helper_thread(int (*proc)(void *), void *arg,
unsigned int flags, unsigned long *stack_out,
int stack_order);
unsigned int flags, unsigned long *stack_out);
extern int helper_wait(int pid);