sysvshm: don't lock proc when calculating attach_va
vm_daddr is constant and RLIMIT_DATA can be obtained from thread's copy of rlimits.
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=285056
@ -380,10 +380,8 @@ kern_shmat_locked(struct thread *td, int shmid, const void *shmaddr,
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* This is just a hint to vm_map_find() about where to
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* put it.
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*/
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PROC_LOCK(p);
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attach_va = round_page((vm_offset_t)p->p_vmspace->vm_daddr +
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lim_max_proc(p, RLIMIT_DATA));
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PROC_UNLOCK(p);
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lim_max(td, RLIMIT_DATA));
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}
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vm_object_reference(shmseg->object);
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