Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 9ef258ba authored by Kefeng Wang's avatar Kefeng Wang Committed by Linus Torvalds
Browse files

thp: update split_huge_page_pmd() comment 

According to 78ddc534 ("thp: rename split_huge_page_pmd() to
split_huge_pmd()"), update related comment.

Link: http://lkml.kernel.org/r/20190731033406.185285-1-wangkefeng.wang@huawei.com


Signed-off-by: default avatarKefeng Wang <wangkefeng.wang@huawei.com>
Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 276f756d

arch/powerpc/mm/book3s64/hash_utils.c

+1 −1
Original line number Diff line number Diff line
@@ -1748,7 +1748,7 @@ void flush_hash_hugepage(unsigned long vsid, unsigned long addr, 
	/*

	 * IF we try to do a HUGE PTE update after a withdraw is done.

	 * we will find the below NULL. This happens when we do

	 * split_huge_page_pmd

	 * split_huge_pmd

	 */

	if (!hpte_slot_array)

		return;

include/asm-generic/pgtable.h

+2 −3
Original line number Diff line number Diff line
@@ -1002,9 +1002,8 @@ static inline int pmd_none_or_trans_huge_or_clear_bad(pmd_t *pmd) 
 * need this). If THP is not enabled, the pmd can't go away under the

 * code even if MADV_DONTNEED runs, but if THP is enabled we need to

 * run a pmd_trans_unstable before walking the ptes after

 * split_huge_page_pmd returns (because it may have run when the pmd

 * become null, but then a page fault can map in a THP and not a

 * regular page).

 * split_huge_pmd returns (because it may have run when the pmd become

 * null, but then a page fault can map in a THP and not a regular page).

 */

static inline int pmd_trans_unstable(pmd_t *pmd)

{