diff options
| author | Geert Uytterhoeven <geert@linux-m68k.org> | 2015-09-08 14:58:25 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-08 15:35:28 -0700 |
| commit | af8713b701a74c3784ce6683f64f474a94b1b643 (patch) | |
| tree | 7ee373a83d59a276797c31ad63876208a624c5ea | |
| parent | 61e57c0c3a37539e13af03ce68598034d37c7256 (diff) | |
selftests/userfaultfd: fix compiler warnings on 32-bit
On 32-bit:
userfaultfd.c: In function 'locking_thread':
userfaultfd.c:152: warning: left shift count >= width of type
userfaultfd.c: In function 'uffd_poll_thread':
userfaultfd.c:295: warning: cast to pointer from integer of different size
userfaultfd.c: In function 'uffd_read_thread':
userfaultfd.c:332: warning: cast to pointer from integer of different size
Fix the shift warning by splitting the shift in two parts, and the
integer/pointer warnigns by adding intermediate casts to "unsigned long".
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | tools/testing/selftests/vm/userfaultfd.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/tools/testing/selftests/vm/userfaultfd.c b/tools/testing/selftests/vm/userfaultfd.c index 0c0b83953352..b619f672131e 100644 --- a/tools/testing/selftests/vm/userfaultfd.c +++ b/tools/testing/selftests/vm/userfaultfd.c @@ -147,7 +147,8 @@ static void *locking_thread(void *arg) if (sizeof(page_nr) > sizeof(rand_nr)) { if (random_r(&rand, &rand_nr)) fprintf(stderr, "random_r 2 error\n"), exit(1); - page_nr |= ((unsigned long) rand_nr) << 32; + page_nr |= (((unsigned long) rand_nr) << 16) << + 16; } } else page_nr += 1; @@ -290,7 +291,8 @@ static void *uffd_poll_thread(void *arg) msg.event), exit(1); if (msg.arg.pagefault.flags & UFFD_PAGEFAULT_FLAG_WRITE) fprintf(stderr, "unexpected write fault\n"), exit(1); - offset = (char *)msg.arg.pagefault.address - area_dst; + offset = (char *)(unsigned long)msg.arg.pagefault.address - + area_dst; offset &= ~(page_size-1); if (copy_page(offset)) userfaults++; @@ -327,7 +329,8 @@ static void *uffd_read_thread(void *arg) if (bounces & BOUNCE_VERIFY && msg.arg.pagefault.flags & UFFD_PAGEFAULT_FLAG_WRITE) fprintf(stderr, "unexpected write fault\n"), exit(1); - offset = (char *)msg.arg.pagefault.address - area_dst; + offset = (char *)(unsigned long)msg.arg.pagefault.address - + area_dst; offset &= ~(page_size-1); if (copy_page(offset)) (*this_cpu_userfaults)++; |