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khugepaged: add parameter explanations for kernel-doc markup

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Add missed parameter explanation for some kernel-doc warnings:

  mm/khugepaged.c:102: warning: Function parameter or member 'nr_pte_mapped_thp' not described in 'mm_slot'
  mm/khugepaged.c:102: warning: Function parameter or member 'pte_mapped_thp' not described in 'mm_slot'
  mm/khugepaged.c:1424: warning: Function parameter or member 'mm' not described in 'collapse_pte_mapped_thp'
  mm/khugepaged.c:1424: warning: Function parameter or member 'addr' not described in 'collapse_pte_mapped_thp'
  mm/khugepaged.c:1626: warning: Function parameter or member 'mm' not described in 'collapse_file'
  mm/khugepaged.c:1626: warning: Function parameter or member 'file' not described in 'collapse_file'
  mm/khugepaged.c:1626: warning: Function parameter or member 'start' not described in 'collapse_file'
  mm/khugepaged.c:1626: warning: Function parameter or member 'hpage' not described in 'collapse_file'
  mm/khugepaged.c:1626: warning: Function parameter or member 'node' not described in 'collapse_file'

Link: https://lkml.kernel.org/r/1605597325-25284-1-git-send-email-alex.shi@linux.alibaba.com
Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alex Shi 2020-12-14 19:12:01 -08:00 committed by Linus Torvalds
parent ebfe1b8f6e
commit 336e6b53d9
1 changed files with 13 additions and 1 deletions
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14
mm/khugepaged.c
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@ -90,6 +90,8 @@ static struct kmem_cache *mm_slot_cache __read_mostly;
* @hash: hash collision list
* @mm_node: khugepaged scan list headed in khugepaged_scan.mm_head
* @mm: the mm that this information is valid for
* @nr_pte_mapped_thp: number of pte mapped THP
* @pte_mapped_thp: address array corresponding pte mapped THP
*/
struct mm_slot {
struct hlist_node hash;
@ -1414,7 +1416,11 @@ static int khugepaged_add_pte_mapped_thp(struct mm_struct *mm,
}
/**
* Try to collapse a pte-mapped THP for mm at address haddr.
* collapse_pte_mapped_thp - Try to collapse a pte-mapped THP for mm at
* address haddr.
*
* @mm: process address space where collapse happens
* @addr: THP collapse address
*
* This function checks whether all the PTEs in the PMD are pointing to the
* right THP. If so, retract the page table so the THP can refault in with
@ -1605,6 +1611,12 @@ static void retract_page_tables(struct address_space *mapping, pgoff_t pgoff)
/**
* collapse_file - collapse filemap/tmpfs/shmem pages into huge one.
*
* @mm: process address space where collapse happens
* @file: file that collapse on
* @start: collapse start address
* @hpage: new allocated huge page for collapse
* @node: appointed node the new huge page allocate from
*
* Basic scheme is simple, details are more complex:
* - allocate and lock a new huge page;
* - scan page cache replacing old pages with the new one