[ros-diffs] [reactos] 01/01: [NTOS:MM] Fix integer arithmetics

[Jérôme Gardou]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=d1d1260f5f59046842707…

commit d1d1260f5f590468427077755d6f121a756e7738
Author:     Jérôme Gardou <jerome.gardou(a)reactos.org>
AuthorDate: Mon Mar 22 10:01:39 2021 +0100
Commit:     Jérôme Gardou <jerome.gardou(a)reactos.org>
CommitDate: Mon Mar 22 10:02:12 2021 +0100

    [NTOS:MM] Fix integer arithmetics
---
 ntoskrnl/mm/ARM3/expool.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/ntoskrnl/mm/ARM3/expool.c b/ntoskrnl/mm/ARM3/expool.c
index 4df9bbde217..74393137162 100644
--- a/ntoskrnl/mm/ARM3/expool.c
+++ b/ntoskrnl/mm/ARM3/expool.c
@@ -29,8 +29,6 @@
  * etc.
  */
 #define POOL_BIG_TABLE_USE_RATE 4
-#define POOL_BIG_TABLE_LOW_THRESHOLD (POOL_BIG_TABLE_USE_RATE * 2)
-#define POOL_BIG_TABLE_HIGH_THRESHOLD ((POOL_BIG_TABLE_USE_RATE - 1) /
POOL_BIG_TABLE_USE_RATE)
 
 typedef struct _POOL_DPC_CONTEXT
 {
@@ -1636,7 +1634,7 @@ Retry:
             // which implies a massive number of concurrent big pool allocations.
             //
             ExpPoolBigEntriesInUse++;
-            if ((i >= 16) && (ExpPoolBigEntriesInUse > (TableSize *
POOL_BIG_TABLE_HIGH_THRESHOLD)))
+            if ((i >= 16) && (ExpPoolBigEntriesInUse > (TableSize *
(POOL_BIG_TABLE_USE_RATE - 1) / POOL_BIG_TABLE_USE_RATE)))
             {
                 DPRINT("Attempting expansion since we now have %lu entries\n",
                         ExpPoolBigEntriesInUse);
@@ -1750,7 +1748,7 @@ ExpFindAndRemoveTagBigPages(IN PVOID Va,
 
     /* If reaching 12.5% of the size (or whatever integer rounding gets us to),
      * halve the allocation size, which will get us to 25% of space used. */
-    if (ExpPoolBigEntriesInUse < (PoolBigPageTableSize /
POOL_BIG_TABLE_LOW_THRESHOLD))
+    if (ExpPoolBigEntriesInUse < (PoolBigPageTableSize / (POOL_BIG_TABLE_USE_RATE *
2)))
     {
         /* Shrink the table. */
         ExpReallocateBigPageTable(OldIrql, TRUE);