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Revert "make mmap try to reserve memory areas with (size/2)-aligned virtual addresses"

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This reverts commit 4ecc9ea5a587eb1c56440c484a12b22a77ef5c2b.
This commit is contained in:
Masamichi Takagi m-takagi@ab.jp.nec.com
2012-11-26 13:46:06 +09:00
parent a1490da112
commit cf975e1926
1 changed files with 0 additions and 11 deletions
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11
kernel/syscall.c
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@@ -395,18 +395,7 @@ SYSCALL_DECLARE(mmap)
// #define MAP_ANONYMOUS 0x20
kprintf("syscall.c,!MAP_FIXED,MAP_ANONYMOUS\n");
unsigned long flags = aal_mc_spinlock_lock(&cpu_local_var(current)->vm->memory_range_lock);
#if 1
unsigned long sz = aal_mc_syscall_arg1(ctx);
unsigned long amt_align = (sz & (PAGE_SIZE*2-1)) ? PAGE_SIZE : sz/2;
unsigned long s = ((region->map_end + amt_align - 1) & ~(amt_align - 1));
kprintf("(%d),syscall.c,!MAP_FIXED,MAP_ANONYMOUS,sz=%lx,amt_align=%lx,s=%lx\n", aal_mc_get_processor_id(), sz, amt_align, s);
unsigned long map_end_aligned = ((region->map_end + amt_align - 1) & ~(amt_align - 1));
#else
unsigned long s = (region->map_end + PAGE_SIZE - 1) & PAGE_MASK;
unsigned long map_end_aligned = region->map_end;
#endif
unsigned long len = (aal_mc_syscall_arg1(ctx) + PAGE_SIZE - 1) & PAGE_MASK;
region->map_end =
extend_process_region(cpu_local_var(current),