From: bugzilla-daemon@bugzilla.kernel.org
To: linux-ext4@vger.kernel.org
Subject: [Bug 201461] ext4 journal stalls write system call
Date: Wed, 17 Oct 2018 15:39:10 +0000 [thread overview]
Message-ID: <bug-201461-13602-xC8NjcnSo2@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-201461-13602@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=201461
Theodore Tso (tytso@mit.edu) changed:
What |Removed |Added
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CC| |tytso@mit.edu
--- Comment #1 from Theodore Tso (tytso@mit.edu) ---
It shouldn't be the case that the journal's data=ordered writeback would be
taking the i_data semaphore for writing.
I'm guessing what is happening is that journal is causing a lot of I/O
operations because of data=ordered mode (e.g., not data=writeback), and this is
delaying a read which a writeback thread was trying to do while it was holding
a write lock on the inode's semaphore.
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next prev parent reply other threads:[~2018-10-17 23:35 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-17 12:56 [Bug 201461] New: ext4 journal stalls write system call bugzilla-daemon
2018-10-17 12:57 ` [Bug 201461] " bugzilla-daemon
2018-10-17 15:39 ` bugzilla-daemon [this message]
2018-10-18 2:02 ` bugzilla-daemon
2018-10-18 2:35 ` bugzilla-daemon
2018-10-18 13:04 ` bugzilla-daemon
2018-10-18 14:12 ` bugzilla-daemon
2018-10-18 14:22 ` bugzilla-daemon
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