diff options
| author | Andreas Gruenbacher <agruenba@redhat.com> | 2019-05-17 21:18:43 +0300 |
|---|---|---|
| committer | Andreas Gruenbacher <agruenba@redhat.com> | 2019-05-22 15:09:44 +0300 |
| commit | 5a5ec83d6ac974b12085cd99b196795f14079037 (patch) | |
| tree | ba7ac34e9dbe8e0795b3704e36d5bdb88dc01faa /kernel | |
| parent | a188339ca5a396acc588e5851ed7e19f66b0ebd9 (diff) | |
| download | linux-5a5ec83d6ac974b12085cd99b196795f14079037.tar.xz | |
gfs2: Fix sign extension bug in gfs2_update_stats
Commit 4d207133e9c3 changed the types of the statistic values in struct
gfs2_lkstats from s64 to u64. Because of that, what should be a signed
value in gfs2_update_stats turned into an unsigned value. When shifted
right, we end up with a large positive value instead of a small negative
value, which results in an incorrect variance estimate.
Fixes: 4d207133e9c3 ("gfs2: Make statistics unsigned, suitable for use with do_div()")
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Cc: stable@vger.kernel.org # v4.4+
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions