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| author | Christoph Hellwig <hch@lst.de> | 2020-06-08 21:35:04 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-09 09:39:16 -0700 |
| commit | 2a71e81d32198785387c8bc0f2cc5d78f84e2e78 (patch) | |
| tree | 8fae2ecb69aa0286ab0e2c7fe9e3ca3678f37251 /mm/page_counter.c | |
| parent | fa94111d94354de76c47fea6e1187d1ee91e23a7 (diff) | |
| download | linux-2a71e81d32198785387c8bc0f2cc5d78f84e2e78.tar.bz2 | |
maccess: return -ERANGE when probe_kernel_read() fails
Allow the callers to distinguish a real unmapped address vs a range
that can't be probed.
Suggested-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20200521152301.2587579-24-hch@lst.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_counter.c')
0 files changed, 0 insertions, 0 deletions