gh0s7/mckernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

hfi1_user_exp_rcv_overlapping(): fix return value when overlapping

Browse Source
This commit is contained in:
Balazs Gerofi
2018-03-24 16:04:35 +09:00
parent 7e7c0f9ed3
commit 3043591e9a
1 changed files with 9 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
kernel/user_exp_rcv.c
View File

@@ -621,7 +621,13 @@ int hfi1_user_exp_rcv_overlapping(unsigned long start, unsigned long end)
" in munmap for 0x%lx:%lu-0x%lx\n", " in munmap for 0x%lx:%lu-0x%lx\n",
__FUNCTION__, node->start, node->len, start, end - start, end); __FUNCTION__, node->start, node->len, start, end - start, end);
tid_rb_invalidate(fd, node); tid_rb_invalidate(fd, node);
node->range = range; if (node->range) {
kprintf("%s: WARNING: node->range is already set for 0x%lx:%lu\n",
__FUNCTION__, start, end);
}
else {
node->range = range;
}
++range->refcnt; ++range->refcnt;
node = __hfi1_search_rb_overlapping_node( node = __hfi1_search_rb_overlapping_node(
@@ -629,11 +635,12 @@ int hfi1_user_exp_rcv_overlapping(unsigned long start, unsigned long end)
start, end); start, end);
} }
if (ret != 0) { if (range->refcnt == 0) {
kfree(range); kfree(range);
} }
else { else {
list_add_tail(&range->list, &vm->vm_deferred_unmap_range_list); list_add_tail(&range->list, &vm->vm_deferred_unmap_range_list);
ret = range->refcnt;
} }
//ihk_mc_spinlock_unlock_noirq(&vm->vm_deferred_unmap_lock); //ihk_mc_spinlock_unlock_noirq(&vm->vm_deferred_unmap_lock);