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x86: Use kmemdup() in copy_thread(), rather than duplicating its implementation

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The semantic patch that makes this change is available
in scripts/coccinelle/api/memdup.cocci.

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Link: http://lkml.kernel.org/r/1321569820.1624.275.camel@localhost.localdomain
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Thomas Meyer 2011-11-17 23:43:40 +01:00 • committed by Ingo Molnar
parent 3f7787b36c
commit cced402299
1 changed files with 2 additions and 3 deletions
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5
arch/x86/kernel/process_64.c
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@ -293,13 +293,12 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
memset(p->thread.ptrace_bps, 0, sizeof(p->thread.ptrace_bps)); memset(p->thread.ptrace_bps, 0, sizeof(p->thread.ptrace_bps));
if (unlikely(test_tsk_thread_flag(me, TIF_IO_BITMAP))) { if (unlikely(test_tsk_thread_flag(me, TIF_IO_BITMAP))) {
p->thread.io_bitmap_ptr = kmalloc(IO_BITMAP_BYTES, GFP_KERNEL); p->thread.io_bitmap_ptr = kmemdup(me->thread.io_bitmap_ptr,
IO_BITMAP_BYTES, GFP_KERNEL);
if (!p->thread.io_bitmap_ptr) { if (!p->thread.io_bitmap_ptr) {
p->thread.io_bitmap_max = 0; p->thread.io_bitmap_max = 0;
return -ENOMEM; return -ENOMEM;
} }
memcpy(p->thread.io_bitmap_ptr, me->thread.io_bitmap_ptr,
IO_BITMAP_BYTES);
set_tsk_thread_flag(p, TIF_IO_BITMAP); set_tsk_thread_flag(p, TIF_IO_BITMAP);
} }