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| author | Huang Pei <huangpei@loongson.cn> | 2021-06-11 10:09:46 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-19 10:44:51 +0300 |
| commit | c7a31ae63e2c9f2c0968a21c6cbe6898efa7ce44 (patch) | |
| tree | 585b18853bee5e36c321317d6daa01683086d0bd | |
| parent | 50ce920fe113007c6ee3eb8ee10f295012d85bc1 (diff) | |
| download | linux-c7a31ae63e2c9f2c0968a21c6cbe6898efa7ce44.tar.xz | |
MIPS: add PMD table accounting into MIPS'pmd_alloc_one
[ Upstream commit ed914d48b6a1040d1039d371b56273d422c0081e ]
This fixes Page Table accounting bug.
MIPS is the ONLY arch just defining __HAVE_ARCH_PMD_ALLOC_ONE alone.
Since commit b2b29d6d011944 (mm: account PMD tables like PTE tables),
"pmd_free" in asm-generic with PMD table accounting and "pmd_alloc_one"
in MIPS without PMD table accounting causes PageTable accounting number
negative, which read by global_zone_page_state(), always returns 0.
Signed-off-by: Huang Pei <huangpei@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/mips/include/asm/pgalloc.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/mips/include/asm/pgalloc.h b/arch/mips/include/asm/pgalloc.h index 8b18424b3120..d0cf997b4ba8 100644 --- a/arch/mips/include/asm/pgalloc.h +++ b/arch/mips/include/asm/pgalloc.h @@ -59,11 +59,15 @@ do { \ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address) { - pmd_t *pmd; + pmd_t *pmd = NULL; + struct page *pg; - pmd = (pmd_t *) __get_free_pages(GFP_KERNEL, PMD_ORDER); - if (pmd) + pg = alloc_pages(GFP_KERNEL | __GFP_ACCOUNT, PMD_ORDER); + if (pg) { + pgtable_pmd_page_ctor(pg); + pmd = (pmd_t *)page_address(pg); pmd_init((unsigned long)pmd, (unsigned long)invalid_pte_table); + } return pmd; } |