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vmm: fix logic errors

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Matheus
2024-09-16 22:18:13 -03:00
parent 3254cc8061
commit 5ef9fb0cb3
1 changed files with 3 additions and 5 deletions
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kernel-src/mm/vmm.c
+3 -5
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@@ -317,11 +317,9 @@ static int changemap(vmmspace_t *space, void *address, size_t size, bool free, i
int error = 0;
while (range && range->start >= top) {
while (range && range->start < top) {
__assert(range != space->ranges || range->prev == NULL);
void *rangetop = RANGE_TOP(range);
if ((uintptr_t)range->start >= (uintptr_t)address + size)
break;
vmmrange_t *nextsave = range->next;
if (range->start >= address && rangetop <= top) {
@@ -456,7 +454,7 @@ static int changemap(vmmspace_t *space, void *address, size_t size, bool free, i
if (free) {
destroyrange(range, range->size, difference, 0);
} else {
newrange->start = (void *)((uintptr_t)range->start + range->size + difference);
newrange->start = (void *)((uintptr_t)range->start + range->size);
newrange->size = difference;
newrange->flags = range->flags;
newrange->mmuflags = newmmuflags;
@@ -465,7 +463,7 @@ static int changemap(vmmspace_t *space, void *address, size_t size, bool free, i
if (range->flags & VMM_FLAGS_FILE) {
newrange->vnode = range->vnode;
newrange->offset = range->offset + range->size + difference;
newrange->offset = range->offset + range->size;
VOP_HOLD(range->vnode);
}