diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2023-01-20 12:28:23 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-01-20 12:28:23 -0800 |
| commit | b3c588cd553d6996cc97f3dc0a7081b9a9b36b48 (patch) | |
| tree | 37e51018ad3f74bf91a7b4a54a0893d048440bd1 /mm/khugepaged.c | |
| parent | 7a590bd6b42ffa12b16956f37742cc04ec15545e (diff) | |
| parent | 5deaa98587aca2f0e7605388e89cfa1df4bad5cb (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
drivers/net/ipa/ipa_interrupt.c
drivers/net/ipa/ipa_interrupt.h
9ec9b2a30853 ("net: ipa: disable ipa interrupt during suspend")
8e461e1f092b ("net: ipa: introduce ipa_interrupt_enable()")
d50ed3558719 ("net: ipa: enable IPA interrupt handlers separate from registration")
https://lore.kernel.org/all/20230119114125.5182c7ab@canb.auug.org.au/
https://lore.kernel.org/all/79e46152-8043-a512-79d9-c3b905462774@tessares.net/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'mm/khugepaged.c')
| -rw-r--r-- | mm/khugepaged.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 5cb401aa2b9d..79be13133322 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -1460,14 +1460,6 @@ int collapse_pte_mapped_thp(struct mm_struct *mm, unsigned long addr, if (!hugepage_vma_check(vma, vma->vm_flags, false, false, false)) return SCAN_VMA_CHECK; - /* - * Symmetry with retract_page_tables(): Exclude MAP_PRIVATE mappings - * that got written to. Without this, we'd have to also lock the - * anon_vma if one exists. - */ - if (vma->anon_vma) - return SCAN_VMA_CHECK; - /* Keep pmd pgtable for uffd-wp; see comment in retract_page_tables() */ if (userfaultfd_wp(vma)) return SCAN_PTE_UFFD_WP; @@ -1567,8 +1559,14 @@ int collapse_pte_mapped_thp(struct mm_struct *mm, unsigned long addr, } /* step 4: remove pte entries */ + /* we make no change to anon, but protect concurrent anon page lookup */ + if (vma->anon_vma) + anon_vma_lock_write(vma->anon_vma); + collapse_and_free_pmd(mm, vma, haddr, pmd); + if (vma->anon_vma) + anon_vma_unlock_write(vma->anon_vma); i_mmap_unlock_write(vma->vm_file->f_mapping); maybe_install_pmd: @@ -2649,7 +2647,7 @@ int madvise_collapse(struct vm_area_struct *vma, struct vm_area_struct **prev, goto out_nolock; } - hend = vma->vm_end & HPAGE_PMD_MASK; + hend = min(hend, vma->vm_end & HPAGE_PMD_MASK); } mmap_assert_locked(mm); memset(cc->node_load, 0, sizeof(cc->node_load)); |