From: Pan Xinhui <xinhuix....@intel.com>
It's safe and more reasonable to unlock memtype_lock right after
rbt_memtype_check_insert.
Signed-off-by: Pan Xinhui <xinhuix....@intel.com>
---
arch/x86/mm/pat.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index 188e3e0..cb75639 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -538,20 +538,17 @@ int reserve_memtype(u64 start, u64 end, enum
page_cache_mode req_type,
new->type = actual_type;
spin_lock(&memtype_lock);
-
err = rbt_memtype_check_insert(new, new_type);
+ spin_unlock(&memtype_lock);
+
if (err) {
pr_info("x86/PAT: reserve_memtype failed [mem %#010Lx-%#010Lx],
track %s, req %s\n",
start, end - 1,
cattr_name(new->type), cattr_name(req_type));
kfree(new);
- spin_unlock(&memtype_lock);
-
return err;
}
- spin_unlock(&memtype_lock);
-
dprintk("reserve_memtype added [mem %#010Lx-%#010Lx], track %s, req %s,
ret %s\n",
start, end - 1, cattr_name(new->type), cattr_name(req_type),
new_type ? cattr_name(*new_type) : "-");
--
1.9.1
--
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