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authorOllie Wild <aaw@google.com>2007-07-19 04:48:16 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-19 13:04:45 -0400
commitb6a2fea39318e43fee84fa7b0b90d68bed92d2ba (patch)
treec9c3619cb2730b5c10c7427b837146bce3d69156 /mm/mremap.c
parentbdf4c48af20a3b0f01671799ace345e3d49576da (diff)
mm: variable length argument support
Remove the arg+env limit of MAX_ARG_PAGES by copying the strings directly from the old mm into the new mm. We create the new mm before the binfmt code runs, and place the new stack at the very top of the address space. Once the binfmt code runs and figures out where the stack should be, we move it downwards. It is a bit peculiar in that we have one task with two mm's, one of which is inactive. [a.p.zijlstra@chello.nl: limit stack size] Signed-off-by: Ollie Wild <aaw@google.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: <linux-arch@vger.kernel.org> Cc: Hugh Dickins <hugh@veritas.com> [bunk@stusta.de: unexport bprm_mm_init] Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mremap.c')
-rw-r--r--mm/mremap.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/mremap.c b/mm/mremap.c
index bc7c52efc71b..8ea5c2412c6e 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -120,7 +120,7 @@ static void move_ptes(struct vm_area_struct *vma, pmd_t *old_pmd,
120 120
121#define LATENCY_LIMIT (64 * PAGE_SIZE) 121#define LATENCY_LIMIT (64 * PAGE_SIZE)
122 122
123static unsigned long move_page_tables(struct vm_area_struct *vma, 123unsigned long move_page_tables(struct vm_area_struct *vma,
124 unsigned long old_addr, struct vm_area_struct *new_vma, 124 unsigned long old_addr, struct vm_area_struct *new_vma,
125 unsigned long new_addr, unsigned long len) 125 unsigned long new_addr, unsigned long len)
126{ 126{