tree dbca348bd6669d01ff60d896aba9de9f2b26f7c0
parent f8b74815a452ff2904b5d7fcce1a5ae2a4d7ca5e
author Toshi Kani <toshi.kani@hpe.com> 1455743489 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1455841404 -0800

devm_memremap_release(): fix memremap'd addr handling

The pmem driver calls devm_memremap() to map a persistent memory range.
When the pmem driver is unloaded, this memremap'd range is not released
so the kernel will leak a vma.

Fix devm_memremap_release() to handle a given memremap'd address
properly.

Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Matthew Wilcox <willy@linux.intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>