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| author | Roland McGrath <roland@redhat.com> | 2008-07-26 04:45:50 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-26 21:00:09 +0200 |
| commit | fa8e26ccd485216fc45c8c2dd1ec3b7ef1a0a2f8 (patch) | |
| tree | b6c3059593d7d185aaf7f5b69c363a48b18c5bb1 /mm | |
| parent | tracehook: tracehook_tracer_task (diff) | |
| download | linux-fa8e26ccd485216fc45c8c2dd1ec3b7ef1a0a2f8.tar.xz linux-fa8e26ccd485216fc45c8c2dd1ec3b7ef1a0a2f8.zip | |
tracehook: tracehook_expect_breakpoints
This adds tracehook_expect_breakpoints() as a formal hook for the nommu
code to use for its, "Is text-poking likely?" check at mmap time. This
names the actual semantics the code means to test, and documents it.
Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/nommu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/nommu.c b/mm/nommu.c index 4462b6a3fcb9..5edccd9c9218 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -22,7 +22,7 @@ #include <linux/pagemap.h> #include <linux/slab.h> #include <linux/vmalloc.h> -#include <linux/ptrace.h> +#include <linux/tracehook.h> #include <linux/blkdev.h> #include <linux/backing-dev.h> #include <linux/mount.h> @@ -745,7 +745,7 @@ static unsigned long determine_vm_flags(struct file *file, * it's being traced - otherwise breakpoints set in it may interfere * with another untraced process */ - if ((flags & MAP_PRIVATE) && (current->ptrace & PT_PTRACED)) + if ((flags & MAP_PRIVATE) && tracehook_expect_breakpoints(current)) vm_flags &= ~VM_MAYSHARE; return vm_flags; |