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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-09 09:54:46 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-09 09:54:46 -0700 |
commit | a5ad5742f671de906adbf29fbedf0a04705cebad (patch) | |
tree | 88d1a4c18e2025a5a8335dbbc9dea8bebeba5789 /lib/test_hmm.c | |
parent | 013b2deba9a6b80ca02f4fafd7dedf875e9b4450 (diff) | |
parent | 4fa7252338a56fbc90220e6330f136a379175a7a (diff) | |
download | linux-a5ad5742f671de906adbf29fbedf0a04705cebad.tar.gz linux-a5ad5742f671de906adbf29fbedf0a04705cebad.tar.bz2 linux-a5ad5742f671de906adbf29fbedf0a04705cebad.zip |
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 'lib/test_hmm.c')
-rw-r--r-- | lib/test_hmm.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/lib/test_hmm.c b/lib/test_hmm.c index 5c1858e325ba..28528285942c 100644 --- a/lib/test_hmm.c +++ b/lib/test_hmm.c @@ -245,9 +245,9 @@ static int dmirror_range_fault(struct dmirror *dmirror, } range->notifier_seq = mmu_interval_read_begin(range->notifier); - down_read(&mm->mmap_sem); + mmap_read_lock(mm); ret = hmm_range_fault(range); - up_read(&mm->mmap_sem); + mmap_read_unlock(mm); if (ret) { if (ret == -EBUSY) continue; @@ -686,7 +686,7 @@ static int dmirror_migrate(struct dmirror *dmirror, if (!mmget_not_zero(mm)) return -EINVAL; - down_read(&mm->mmap_sem); + mmap_read_lock(mm); for (addr = start; addr < end; addr = next) { vma = find_vma(mm, addr); if (!vma || addr < vma->vm_start || @@ -713,7 +713,7 @@ static int dmirror_migrate(struct dmirror *dmirror, dmirror_migrate_finalize_and_map(&args, dmirror); migrate_vma_finalize(&args); } - up_read(&mm->mmap_sem); + mmap_read_unlock(mm); mmput(mm); /* Return the migrated data for verification. */ @@ -733,7 +733,7 @@ static int dmirror_migrate(struct dmirror *dmirror, return ret; out: - up_read(&mm->mmap_sem); + mmap_read_unlock(mm); mmput(mm); return ret; } @@ -825,9 +825,9 @@ static int dmirror_range_snapshot(struct dmirror *dmirror, range->notifier_seq = mmu_interval_read_begin(range->notifier); - down_read(&mm->mmap_sem); + mmap_read_lock(mm); ret = hmm_range_fault(range); - up_read(&mm->mmap_sem); + mmap_read_unlock(mm); if (ret) { if (ret == -EBUSY) continue; |