diff options
| author | Mark Lord <kernel@teksavvy.com> | 2010-09-24 09:51:13 -0400 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2010-09-24 15:52:09 +0200 |
| commit | 4b1977698ceb4c4caa800d475127139da49966f9 (patch) | |
| tree | 9302bafc15dfb6d3923febaa982feb2cb12063cb /mm | |
| parent | 749ef9f8423054e326f3a246327ed2db4b6d395f (diff) | |
block: Prevent hang_check firing during long I/O
During long I/O operations, the hang_check timer may fire,
trigger stack dumps that unnecessarily alarm the user.
Eg. hdparm --security-erase NULL /dev/sdb ## can take *hours* to complete
So, if hang_check is armed, we should wake up periodically
to prevent it from triggering. This patch uses a wake-up interval
equal to half the hang_check timer period, which keeps overhead low enough.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions