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| author | HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com> | 2013-07-03 15:02:17 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-03 16:07:30 -0700 |
| commit | cef2ac3f6c8ab532e49cf69d05f540931ad8ee64 (patch) | |
| tree | dce89fe59f0803b2eb32a1128993e87bb542c023 /mm/vmalloc.c | |
| parent | 7f614cd1e052ebbddee7ea49c725dc75fee74a5a (diff) | |
| download | op-kernel-dev-cef2ac3f6c8ab532e49cf69d05f540931ad8ee64.zip op-kernel-dev-cef2ac3f6c8ab532e49cf69d05f540931ad8ee64.tar.gz | |
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>
Diffstat (limited to 'mm/vmalloc.c')
| -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 d365724..3875fa2 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; |
