Commit 36ee2c78 authored by Miaohe Lin's avatar Miaohe Lin Committed by Andrew Morton
Browse files

mm/khugepaged: trivial typo and codestyle cleanup 

Fix some typos and tweak the code to meet codestyle.  No functional change
intended.

Link: https://lkml.kernel.org/r/20220625092816.4856-4-linmiaohe@huawei.com


Signed-off-by: default avatarMiaohe Lin <linmiaohe@huawei.com>
Reviewed-by: default avatarZach O'Keefe <zokeefe@google.com>
Reviewed-by: default avatarYang Shi <shy828301@gmail.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: NeilBrown <neilb@suse.de>
Cc: Peter Xu <peterx@redhat.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 4d928e20

mm/khugepaged.c

+7 −7
Original line number Diff line number Diff line
@@ -1305,7 +1305,7 @@ static int khugepaged_scan_pmd(struct mm_struct *mm, 
		/*

		 * Check if the page has any GUP (or other external) pins.

		 *

		 * Here the check is racy it may see totmal_mapcount > refcount

		 * Here the check is racy it may see total_mapcount > refcount

		 * in some cases.

		 * For example, one process with one forked child process.

		 * The parent has the PMD split due to MADV_DONTNEED, then
@@ -1553,7 +1553,7 @@ static void retract_page_tables(struct address_space *mapping, pgoff_t pgoff) 
		 * mmap_write_lock(mm) as PMD-mapping is likely to be split

		 * later.

		 *

		 * Not that vma->anon_vma check is racy: it can be set up after

		 * Note that vma->anon_vma check is racy: it can be set up after

		 * the check but before we took mmap_lock by the fault path.

		 * But page lock would prevent establishing any new ptes of the

		 * page, so we are safe.