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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-14 10:10:55 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-14 10:10:55 -0700 |
commit | 318222a35bfb0ae9b5ff3e359a583463e6cfcd94 (patch) | |
tree | 6a8d921f7ac9915f3f12dd3fcd7efaaf6f16bb09 /mm/mmu_notifier.c | |
parent | 7e9890a3500d95c01511a4c45b7e7192dfa47ae2 (diff) | |
parent | 640be2d1ffbc1946f1547eb89b5005ed7542de99 (diff) |
Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton:
- a few misc things and hotfixes
- ocfs2
- almost all of MM
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (139 commits)
kernel/memremap.c: remove the unused device_private_entry_fault() export
mm: delete find_get_entries_tag
mm/huge_memory.c: make __thp_get_unmapped_area static
mm/mprotect.c: fix compilation warning because of unused 'mm' variable
mm/page-writeback: introduce tracepoint for wait_on_page_writeback()
mm/vmscan: simplify trace_reclaim_flags and trace_shrink_flags
mm/Kconfig: update "Memory Model" help text
mm/vmscan.c: don't disable irq again when count pgrefill for memcg
mm: memblock: make keeping memblock memory opt-in rather than opt-out
hugetlbfs: always use address space in inode for resv_map pointer
mm/z3fold.c: support page migration
mm/z3fold.c: add structure for buddy handles
mm/z3fold.c: improve compression by extending search
mm/z3fold.c: introduce helper functions
mm/page_alloc.c: remove unnecessary parameter in rmqueue_pcplist
mm/hmm: add ARCH_HAS_HMM_MIRROR ARCH_HAS_HMM_DEVICE Kconfig
mm/vmscan.c: simplify shrink_inactive_list()
fs/sync.c: sync_file_range(2) may use WB_SYNC_ALL writeback
xen/privcmd-buf.c: convert to use vm_map_pages_zero()
xen/gntdev.c: convert to use vm_map_pages()
...
Diffstat (limited to 'mm/mmu_notifier.c')
-rw-r--r-- | mm/mmu_notifier.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/mm/mmu_notifier.c b/mm/mmu_notifier.c index 9c884abc7850..ee36068077b6 100644 --- a/mm/mmu_notifier.c +++ b/mm/mmu_notifier.c @@ -180,7 +180,7 @@ int __mmu_notifier_invalidate_range_start(struct mmu_notifier_range *range) if (_ret) { pr_info("%pS callback failed with %d in %sblockable context.\n", mn->ops->invalidate_range_start, _ret, - !range->blockable ? "non-" : ""); + !mmu_notifier_range_blockable(range) ? "non-" : ""); ret = _ret; } } @@ -395,3 +395,13 @@ void mmu_notifier_unregister_no_release(struct mmu_notifier *mn, mmdrop(mm); } EXPORT_SYMBOL_GPL(mmu_notifier_unregister_no_release); + +bool +mmu_notifier_range_update_to_read_only(const struct mmu_notifier_range *range) +{ + if (!range->vma || range->event != MMU_NOTIFY_PROTECTION_VMA) + return false; + /* Return true if the vma still have the read flag set. */ + return range->vma->vm_flags & VM_READ; +} +EXPORT_SYMBOL_GPL(mmu_notifier_range_update_to_read_only); |