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mm/vmalloc: extend __find_vmap_area() with one more argument 

__find_vmap_area() finds a "vmap_area" based on passed address.  It scan
the specific "vmap_area_root" rb-tree.  Extend the function with one extra
argument, so any tree can be specified where the search has to be done.

There is no functional change as a result of this patch.

Link: https://lkml.kernel.org/r/20220607093449.3100-5-urezki@gmail.com
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Baoquan He <bhe@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sony.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Uladzislau Rezki (Sony) 2022-06-07 11:34:48 +02:00 committed by akpm
parent 5d7a7c54d3
commit 899c6efe58
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
mm/vmalloc.c
View File

@ -815,9 +815,9 @@ static struct vmap_area *find_vmap_area_exceed_addr(unsigned long addr)
return va;
}
static struct vmap_area *__find_vmap_area(unsigned long addr)
static struct vmap_area *__find_vmap_area(unsigned long addr, struct rb_root *root)
{
struct rb_node *n = vmap_area_root.rb_node;
struct rb_node *n = root->rb_node;
addr = (unsigned long)kasan_reset_tag((void *)addr);
@ -1834,7 +1834,7 @@ struct vmap_area *find_vmap_area(unsigned long addr)
struct vmap_area *va;
spin_lock(&vmap_area_lock);
va = __find_vmap_area(addr);
va = __find_vmap_area(addr, &vmap_area_root);
spin_unlock(&vmap_area_lock);
return va;
@ -2577,7 +2577,7 @@ struct vm_struct *remove_vm_area(const void *addr)
might_sleep();
spin_lock(&vmap_area_lock);
va = __find_vmap_area((unsigned long)addr);
va = __find_vmap_area((unsigned long)addr, &vmap_area_root);
if (va && va->vm) {
struct vm_struct *vm = va->vm;