diff options
| author | HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com> | 2013-07-03 15:02:17 -0700 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2019-05-02 20:54:56 +0200 |
| commit | 53a9456a51b812d5cec76ec82e77540049b9fe08 (patch) | |
| tree | 21069ea30f015ecb203b966653cbe6b32173f333 | |
| parent | d8d6b890c3e36778be0e6508ccdd165d387ca2cd (diff) | |
vmalloc: make find_vm_area check in range
Currently, __find_vmap_area searches for the kernel VM area starting at
a given address. This patch changes this behavior so that it searches
for the kernel VM area to which the address belongs. This change is
needed by remap_vmalloc_range_partial to be introduced in later patch
that receives any position of kernel VM area as target address.
This patch changes the condition (addr > va->va_start) to the equivalent
(addr >= va->va_end) by taking advantage of the fact that each kernel VM
area is non-overlapping.
Signed-off-by: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Atsushi Kumagai <kumagai-atsushi@mxc.nes.nec.co.jp>
Cc: Lisa Mitchell <lisa.mitchell@hp.com>
Cc: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Change-Id: I3af544abd5fb67bf49f03a241618dcd24fca564e
(cherry picked from commit 2e8110e8fad77bf3f81aedcaaf877ec42a590a39)
| -rw-r--r-- | mm/vmalloc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 277f7f481..41d99f352 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -292,7 +292,7 @@ static struct vmap_area *__find_vmap_area(unsigned long addr) va = rb_entry(n, struct vmap_area, rb_node); if (addr < va->va_start) n = n->rb_left; - else if (addr > va->va_start) + else if (addr >= va->va_end) n = n->rb_right; else return va; |