From: bugme-daemon@bugzilla.kernel.org
To: linux-ide@vger.kernel.org
Subject: [Bug 11497] New: Polling of IDE CD status can make machine unresponsive
Date: Thu, 4 Sep 2008 09:57:18 -0700 (PDT) [thread overview]
Message-ID: <bug-11497-11633@http.bugzilla.kernel.org/> (raw)
http://bugzilla.kernel.org/show_bug.cgi?id=11497
Summary: Polling of IDE CD status can make machine unresponsive
Product: IO/Storage
Version: 2.5
KernelVersion: 2.6.27-rc5
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: IDE
AssignedTo: io_ide@kernel-bugs.osdl.org
ReportedBy: bhutchings@solarflare.com
Whenever a device handled by ide-cd is opened, the driver polls the device
status for up to 5 seconds waiting for a good status value. Since this is done
in the open operation, it is holding the BKL all this time. For unknown reasons
(possibly another driver bug) the DVD-ROM drives in some machines here can get
into a state where they always return status 0xd0 and ide-cd always polls for
the full 5 seconds.
hal-storage-daemon appears to open CD-ROM devices every 5 seconds, with the
result that in this state all other operations requiring the BKL can only run
at 5 second intervals. This is possibly bad behaviour on HAL's part, but the
driver also seems to be at fault in holding the BKL for so long.
--
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.
next reply other threads:[~2008-09-04 16:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-04 16:57 bugme-daemon [this message]
2008-09-05 13:19 ` [Bug 11497] Polling of IDE CD status can make machine unresponsive bugme-daemon
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=bug-11497-11633@http.bugzilla.kernel.org/ \
--to=bugme-daemon@bugzilla.kernel.org \
--cc=linux-ide@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).