Messages in this thread Patch in this message | | | Date | Sun, 12 Oct 2008 21:45:12 +0800 | From | "bibo mao" <> | Subject | [patch 0/1]pat: remove redundant condition check |
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On file pat.c, if (start <= entry->start), it also means (start < entry->end). This patch removes redundant condition check.
Signed-off-by: bibo.mao@gmail.com thanks bibo,mao
------------------------------------------------------ diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c index 2a50e0f..12cac5e 100644 --- a/arch/x86/mm/pat.c +++ b/arch/x86/mm/pat.c @@ -305,27 +305,6 @@ int reserve_memtype(u64 start, u64 end, unsigned long req_type, struct memtype, nd); } break; - } else if (start < entry->end) { /* start > entry->start */ - err = chk_conflict(new, entry, new_type); - if (!err) { - dprintk("Overlap at 0x%Lx-0x%Lx\n", - entry->start, entry->end); - cached_entry = list_entry(entry->nd.prev, - struct memtype, nd); - - /* - * Move to right position in the linked - * list to add this new entry - */ - list_for_each_entry_continue(entry, - &memtype_list, nd) { - if (start <= entry->start) { - where = entry->nd.prev; - break; - } - } - } - break; } }
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