mm: Fix memory size alignment in devm_memremap_pages_release()
The functions devm_memremap_pages() and devm_memremap_pages_release() use
different ways to calculate the section-aligned amount of memory. The
latter function may use an incorrect size if the memory region is small
but straddles a section border.
Use the same code for both.
Cc: <stable@vger.kernel.org>
Fixes: 5f29a77cd9
("mm: fix mixed zone detection in devm_memremap_pages")
Signed-off-by: Jan H. Schönherr <jschoenh@amazon.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Родитель
e697c5b90e
Коммит
10a0cd6e49
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@ -293,7 +293,8 @@ static void devm_memremap_pages_release(void *data)
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/* pages are dead and unused, undo the arch mapping */
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align_start = res->start & ~(SECTION_SIZE - 1);
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align_size = ALIGN(resource_size(res), SECTION_SIZE);
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align_size = ALIGN(res->start + resource_size(res), SECTION_SIZE)
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- align_start;
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mem_hotplug_begin();
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arch_remove_memory(align_start, align_size, pgmap->altmap_valid ?
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