[PATCH 2/4] x86,mm/pat: Cleanup some of the local memtype_rb_* calls

Davidlohr Bueso
2019-10-21T23:21:08Z

Cleanup by both getting rid of passing the rb_root down the helper
calls; there is only one. Secondly rename some of the calls from
memtype_rb_*.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
---
arch/x86/mm/pat_rbtree.c | 20 ++++++++------------
1 file changed, 8 insertions(+), 12 deletions(-)

diff --git a/arch/x86/mm/pat_rbtree.c b/arch/x86/mm/pat_rbtree.c
index 4998d690d927..7974136ea1f6 100644
--- a/arch/x86/mm/pat_rbtree.c
+++ b/arch/x86/mm/pat_rbtree.c
@@ -52,12 +52,11 @@ enum {
MEMTYPE_END_MATCH = 1
};

-static struct memtype *memtype_match(struct rb_root_cached *root,
- u64 start, u64 end, int match_type)
+static struct memtype *memtype_match(u64 start, u64 end, int match_type)
{
struct memtype *match;

- match = memtype_interval_iter_first(root, start, end);
+ match = memtype_interval_iter_first(&memtype_rbroot, start, end);
while (match != NULL && match->start < end) {
if ((match_type == MEMTYPE_EXACT_MATCH) &&
(match->start == start) && (match->end == end))
@@ -73,10 +72,9 @@ static struct memtype *memtype_match(struct rb_root_cached *root,
return NULL; /* Returns NULL if there is no match */
}

-static int memtype_rb_check_conflict(struct rb_root_cached *root,
- u64 start, u64 end,
- enum page_cache_mode reqtype,
- enum page_cache_mode *newtype)
+static int memtype_check_conflict(u64 start, u64 end,
+ enum page_cache_mode reqtype,
+ enum page_cache_mode *newtype)
{
struct memtype *match;
enum page_cache_mode found_type = reqtype;
@@ -116,7 +114,7 @@ int rbt_memtype_check_insert(struct memtype *new,
{
int err = 0;

- err = memtype_rb_check_conflict(&memtype_rbroot, new->start, new->end,
+ err = memtype_check_conflict(new->start, new->end,
new->type, ret_type);
if (err)
goto done;
@@ -139,11 +137,9 @@ struct memtype *rbt_memtype_erase(u64 start, u64 end)
* it then checks with END_MATCH, i.e. shrink the size of a node
* from the end for the mremap case.
*/
- data = memtype_match(&memtype_rbroot, start, end,
- MEMTYPE_EXACT_MATCH);
+ data = memtype_match(start, end, MEMTYPE_EXACT_MATCH);
if (!data) {
- data = memtype_match(&memtype_rbroot, start, end,
- MEMTYPE_END_MATCH);
+ data = memtype_match(start, end, MEMTYPE_END_MATCH);
if (!data)
return ERR_PTR(-EINVAL);
}
--
2.16.4