Commit 899c6efe authored by Uladzislau Rezki (Sony)'s avatar Uladzislau Rezki (Sony) Committed by akpm

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.comSigned-off-by: default avatarUladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: default avatarBaoquan 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: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 5d7a7c54
...@@ -815,9 +815,9 @@ static struct vmap_area *find_vmap_area_exceed_addr(unsigned long addr) ...@@ -815,9 +815,9 @@ static struct vmap_area *find_vmap_area_exceed_addr(unsigned long addr)
return va; 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); addr = (unsigned long)kasan_reset_tag((void *)addr);
...@@ -1834,7 +1834,7 @@ struct vmap_area *find_vmap_area(unsigned long addr) ...@@ -1834,7 +1834,7 @@ struct vmap_area *find_vmap_area(unsigned long addr)
struct vmap_area *va; struct vmap_area *va;
spin_lock(&vmap_area_lock); spin_lock(&vmap_area_lock);
va = __find_vmap_area(addr); va = __find_vmap_area(addr, &vmap_area_root);
spin_unlock(&vmap_area_lock); spin_unlock(&vmap_area_lock);
return va; return va;
...@@ -2577,7 +2577,7 @@ struct vm_struct *remove_vm_area(const void *addr) ...@@ -2577,7 +2577,7 @@ struct vm_struct *remove_vm_area(const void *addr)
might_sleep(); might_sleep();
spin_lock(&vmap_area_lock); 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) { if (va && va->vm) {
struct vm_struct *vm = va->vm; struct vm_struct *vm = va->vm;
......
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