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Wrap the ia64-specific freebsd32_mmap_partial() hack in Giant for now

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since it calls into VFS and VM.  This makes the freebsd32_mmap() routine
MP safe and the extra Giants here can be revisited later.

Glanced at by:	marcel
MFC after:	3 days
This commit is contained in:
John Baldwin 2005-07-13 15:12:19 +00:00
parent e6e34c5689
commit fa34d9b7a5
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=147964
1 changed files with 6 additions and 1 deletions
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7
sys/compat/freebsd32/freebsd32_misc.c
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@ -397,6 +397,7 @@ freebsd32_mmap(struct thread *td, struct freebsd32_mmap_args *uap)
start = addr;
end = addr + len;
mtx_lock(&Giant);
if (start != trunc_page(start)) {
error = freebsd32_mmap_partial(td, start,
round_page(start), prot,
@ -427,11 +428,14 @@ freebsd32_mmap(struct thread *td, struct freebsd32_mmap_args *uap)
prot |= VM_PROT_WRITE;
map = &td->td_proc->p_vmspace->vm_map;
rv = vm_map_remove(map, start, end);
if (rv != KERN_SUCCESS)
if (rv != KERN_SUCCESS) {
mtx_unlock(&Giant);
return (EINVAL);
}
rv = vm_map_find(map, 0, 0,
&start, end - start, FALSE,
prot, VM_PROT_ALL, 0);
mtx_unlock(&Giant);
if (rv != KERN_SUCCESS)
return (EINVAL);
r.fd = fd;
@ -445,6 +449,7 @@ freebsd32_mmap(struct thread *td, struct freebsd32_mmap_args *uap)
td->td_retval[0] = addr;
return (0);
}
mtx_unlock(&Giant);
if (end == start) {
/*
* After dealing with the ragged ends, there