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| author | Uladzislau Rezki (Sony) <urezki@gmail.com> | 2022-06-07 11:34:48 +0200 |
|---|---|---|
| committer | akpm <akpm@linux-foundation.org> | 2022-07-03 18:08:41 -0700 |
| commit | 899c6efe58dbe8cb9768057ffc206d03e5a89ce8 (patch) | |
| tree | d060b0928bc4b523f04f644595c28f74e0a7a2bc /mm/vmalloc.c | |
| parent | 5d7a7c54d3d7ff2f54725881dc7e06a7f5c94dc2 (diff) | |
| download | lwn-899c6efe58dbe8cb9768057ffc206d03e5a89ce8.tar.gz lwn-899c6efe58dbe8cb9768057ffc206d03e5a89ce8.zip | |
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>
Diffstat (limited to 'mm/vmalloc.c')
| -rw-r--r-- | mm/vmalloc.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 58cfecb2ec26..dd6cdb201195 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -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; |