diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2018-01-09 14:39:23 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-13 19:48:31 +0200 |
| commit | 720f6277784d5b53bd5bd4195f7d2ff7447f981b (patch) | |
| tree | 40cbdbd3af5dd75a6921253aee5828ecde50b3b8 | |
| parent | f6df92f22be342118d2eedbbcc5ca1953aab1a13 (diff) | |
perf tools: Fix copyfile_offset update of output offset
[ Upstream commit fa1195ccc0af2d121abe0fe266a1caee8c265eea ]
We need to increase output offset in each iteration, not decrease it as
we currently do.
I guess we were lucky to finish in most cases in first iteration, so the
bug never showed. However it shows a lot when working with big (~4GB)
size data.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Fixes: 9c9f5a2f1944 ("perf tools: Introduce copyfile_offset() function")
Link: http://lkml.kernel.org/r/20180109133923.25406-1-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | tools/perf/util/util.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index 85c56800f17a..dfb010bd29f2 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -207,7 +207,7 @@ int copyfile_offset(int ifd, loff_t off_in, int ofd, loff_t off_out, u64 size) size -= ret; off_in += ret; - off_out -= ret; + off_out += ret; } munmap(ptr, off_in + size); |