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maccess: rename probe_kernel_address to get_kernel_nofault

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Better describe what this helper does, and match the naming of
copy_from_kernel_nofault.

Also switch the argument order around, so that it acts and looks
like get_user().

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig 2020-06-17 09:37:55 +02:00 • committed by Linus Torvalds
parent c0ee37e85e
commit 25f12ae45f
20 changed files with 40 additions and 40 deletions
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6
lib/test_lockup.c
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@ -419,8 +419,8 @@ static bool test_kernel_ptr(unsigned long addr, int size)
/* should be at least readable kernel address */
if (access_ok(ptr, 1) ||
access_ok(ptr + size - 1, 1) ||
probe_kernel_address(ptr, buf) ||
probe_kernel_address(ptr + size - 1, buf)) {
get_kernel_nofault(buf, ptr) ||
get_kernel_nofault(buf, ptr + size - 1)) {
pr_err("invalid kernel ptr: %#lx\n", addr);
return true;
}
@ -437,7 +437,7 @@ static bool __maybe_unused test_magic(unsigned long addr, int offset,
if (!addr)
return false;
if (probe_kernel_address(ptr, magic) || magic != expected) {
if (get_kernel_nofault(magic, ptr) || magic != expected) {
pr_err("invalid magic at %#lx + %#x = %#x, expected %#x\n",
addr, offset, magic, expected);
return true;