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make brk region just follow data region

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This effectively reverts commit d70dd2338c.
This commit is contained in:
NAKAMURA Gou
2015-02-17 18:09:10 +09:00
parent 16af976a71
commit bb137bc9bb
1 changed files with 0 additions and 15 deletions
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15
kernel/host.c
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@ -174,23 +174,8 @@ int prepare_process_ranges_args_envs(struct process *proc,
pn->entry); pn->entry);
} }
#if 1
/*
Fix for the problem where brk grows to hit .bss section
when using dynamically linked executables.
Test code resides in /home/takagi/project/mpich/src/brk_icc_mic.
This is because when using
ld.so (i.e. using shared objects), mckernel/kernel/host.c sets "brk" to
the end of .bss of ld.so (e.g. 0x21f000), and then ld.so places a
main-program after this (e.g. 0x400000), so "brk" will hit .bss
eventually.
*/
proc->vm->region.brk_start = proc->vm->region.brk_end =
(USER_END / 4) & LARGE_PAGE_MASK;
#else
proc->vm->region.brk_start = proc->vm->region.brk_end = proc->vm->region.brk_start = proc->vm->region.brk_end =
proc->vm->region.data_end; proc->vm->region.data_end;
#endif
/* Map, copy and update args and envs */ /* Map, copy and update args and envs */
flags = VR_PROT_READ | VR_PROT_WRITE; flags = VR_PROT_READ | VR_PROT_WRITE;