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author | Yu Kuai <yukuai3@huawei.com> | 2023-03-10 10:38:51 +0300 |
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committer | Song Liu <song@kernel.org> | 2023-04-14 08:20:24 +0300 |
commit | 6efddf1e32e2a264694766ca485a4f5e04ee82a7 (patch) | |
tree | b8968b451ff3df4ba17a17eceb6453f0f04e0961 /tools/perf/scripts/python/export-to-sqlite.py | |
parent | c31fea2f8e2a72c817f318016bbc327095175a9f (diff) | |
download | linux-6efddf1e32e2a264694766ca485a4f5e04ee82a7.tar.xz |
md: fix soft lockup in status_resync
status_resync() will calculate 'curr_resync - recovery_active' to show
user a progress bar like following:
[============>........] resync = 61.4%
'curr_resync' and 'recovery_active' is updated in md_do_sync(), and
status_resync() can read them concurrently, hence it's possible that
'curr_resync - recovery_active' can overflow to a huge number. In this
case status_resync() will be stuck in the loop to print a large amount
of '=', which will end up soft lockup.
Fix the problem by setting 'resync' to MD_RESYNC_ACTIVE in this case,
this way resync in progress will be reported to user.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20230310073855.1337560-3-yukuai1@huaweicloud.com
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions