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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-09 09:54:46 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-09 09:54:46 -0700 |
| commit | a5ad5742f671de906adbf29fbedf0a04705cebad (patch) | |
| tree | 88d1a4c18e2025a5a8335dbbc9dea8bebeba5789 /mm/huge_memory.c | |
| parent | 013b2deba9a6b80ca02f4fafd7dedf875e9b4450 (diff) | |
| parent | 4fa7252338a56fbc90220e6330f136a379175a7a (diff) | |
Merge branch 'akpm' (patches from Andrew)
Merge even more updates from Andrew Morton:
- a kernel-wide sweep of show_stack()
- pagetable cleanups
- abstract out accesses to mmap_sem - prep for mmap_sem scalability work
- hch's user acess work
Subsystems affected by this patch series: debug, mm/pagemap, mm/maccess,
mm/documentation.
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (93 commits)
include/linux/cache.h: expand documentation over __read_mostly
maccess: return -ERANGE when probe_kernel_read() fails
x86: use non-set_fs based maccess routines
maccess: allow architectures to provide kernel probing directly
maccess: move user access routines together
maccess: always use strict semantics for probe_kernel_read
maccess: remove strncpy_from_unsafe
tracing/kprobes: handle mixed kernel/userspace probes better
bpf: rework the compat kernel probe handling
bpf:bpf_seq_printf(): handle potentially unsafe format string better
bpf: handle the compat string in bpf_trace_copy_string better
bpf: factor out a bpf_trace_copy_string helper
maccess: unify the probe kernel arch hooks
maccess: remove probe_read_common and probe_write_common
maccess: rename strnlen_unsafe_user to strnlen_user_nofault
maccess: rename strncpy_from_unsafe_strict to strncpy_from_kernel_nofault
maccess: rename strncpy_from_unsafe_user to strncpy_from_user_nofault
maccess: update the top of file comment
maccess: clarify kerneldoc comments
maccess: remove duplicate kerneldoc comments
...
Diffstat (limited to 'mm/huge_memory.c')
| -rw-r--r-- | mm/huge_memory.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index d9b2e0e0580a..78c84bee7e29 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1746,7 +1746,7 @@ bool move_huge_pmd(struct vm_area_struct *vma, unsigned long old_addr, /* * We don't have to worry about the ordering of src and dst - * ptlocks because exclusive mmap_sem prevents deadlock. + * ptlocks because exclusive mmap_lock prevents deadlock. */ old_ptl = __pmd_trans_huge_lock(old_pmd, vma); if (old_ptl) { @@ -1833,9 +1833,9 @@ int change_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd, goto unlock; /* - * In case prot_numa, we are under down_read(mmap_sem). It's critical + * In case prot_numa, we are under mmap_read_lock(mm). It's critical * to not clear pmd intermittently to avoid race with MADV_DONTNEED - * which is also under down_read(mmap_sem): + * which is also under mmap_read_lock(mm): * * CPU0: CPU1: * change_huge_pmd(prot_numa=1) @@ -2618,7 +2618,7 @@ int split_huge_page_to_list(struct page *page, struct list_head *list) if (PageAnon(head)) { /* - * The caller does not necessarily hold an mmap_sem that would + * The caller does not necessarily hold an mmap_lock that would * prevent the anon_vma disappearing so we first we take a * reference to it and then lock the anon_vma for write. This * is similar to page_lock_anon_vma_read except the write lock |