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mm: fix ambiguous comments for better code readability

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commit 552657b7b3343851916fde7e4fd6bfb6516d2bcb upstream.

The parameter of remap_pfn_range() @pfn passed from the caller is actually
a page-frame number converted by corresponding physical address of kernel
memory, the original comment is ambiguous that may mislead the users.

Meanwhile, there is an ambiguous typo "VMM" in the comment of
vm_area_struct.  So fixing them will make the code more readable.

Signed-off-by: chenqiwu <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Linus Torvalds <[email protected]>
Signed-off-by: Harshvardhan Jha <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
chenqiwu 2020-04-06 20:08:33 -07:00 • committed by Greg Kroah-Hartman
commit e681c83006
2 changed files with 3 additions and 3 deletions
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2
mm/memory.c
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@ -1922,7 +1922,7 @@ static inline int remap_p4d_range(struct mm_struct *mm, pgd_t *pgd,
* @vma: user vma to map to
* @addr: target user address to start at
* @pfn: page frame number of kernel physical memory address
* @size: size of map area
* @size: size of mapping area
* @prot: page protection flags for this mapping
*
* Note: this is only safe if the mm semaphore is held when called.