Commit 9273a8bb authored by Toshi Kani's avatar Toshi Kani Committed by Linus Torvalds

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: default avatarToshi Kani <toshi.kani@hpe.com>
Acked-by: default avatarDan 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent f8b74815
...@@ -114,7 +114,7 @@ EXPORT_SYMBOL(memunmap); ...@@ -114,7 +114,7 @@ EXPORT_SYMBOL(memunmap);
static void devm_memremap_release(struct device *dev, void *res) static void devm_memremap_release(struct device *dev, void *res)
{ {
memunmap(res); memunmap(*(void **)res);
} }
static int devm_memremap_match(struct device *dev, void *res, void *match_data) static int devm_memremap_match(struct device *dev, void *res, void *match_data)
......
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