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x86: pat.c final cleanup of loop body in reserve_memtype

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Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Suresh B Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Andreas Herrmann 2008-06-20 22:08:37 +02:00 committed by Ingo Molnar
parent 64fe44c38b
commit 33af9039cb
1 changed files with 11 additions and 19 deletions
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30
arch/x86/mm/pat.c
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@ -281,32 +281,24 @@ int reserve_memtype(u64 start, u64 end, unsigned long req_type,
/* Search for existing mapping that overlaps the current range */ /* Search for existing mapping that overlaps the current range */
where = NULL; where = NULL;
list_for_each_entry(entry, &memtype_list, nd) { list_for_each_entry(entry, &memtype_list, nd) {
if (entry->start >= end) { if (end <= entry->start) {
where = entry->nd.prev; where = entry->nd.prev;
break; break;
} } else if (start <= entry->start) { /* end > entry->start */
if (start <= entry->start && end >= entry->start) {
err = chk_conflict(new, entry, new_type); err = chk_conflict(new, entry, new_type);
if (err) { if (!err) {
break; dprintk("Overlap at 0x%Lx-0x%Lx\n",
entry->start, entry->end);
where = entry->nd.prev;
} }
dprintk("Overlap at 0x%Lx-0x%Lx\n",
entry->start, entry->end);
where = entry->nd.prev;
break; break;
} } else if (start < entry->end) { /* start > entry->start */
if (start < entry->end) {
err = chk_conflict(new, entry, new_type); err = chk_conflict(new, entry, new_type);
if (err) { if (!err) {
break; dprintk("Overlap at 0x%Lx-0x%Lx\n",
entry->start, entry->end);
where = &entry->nd;
} }
dprintk("Overlap at 0x%Lx-0x%Lx\n",
entry->start, entry->end);
where = &entry->nd;
break; break;
} }
} }