From: bugzilla-daemon@kernel.org
To: linux-f2fs-devel@lists.sourceforge.net
Subject: [f2fs-dev] [Bug 216050] f2fs_gc occupies 100% cpu
Date: Wed, 21 Dec 2022 00:56:27 +0000 [thread overview]
Message-ID: <bug-216050-202145-jmFJp91wh3@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-216050-202145@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=216050
--- Comment #119 from Yuriy Garin (yuriy.garin@gmail.com) ---
Created attachment 303440
--> https://bugzilla.kernel.org/attachment.cgi?id=303440&action=edit
debug patch log - page, folio and ref count
As you see, folio pointer is valid.
And, ref_count is not 1 before going to f2fs_put_page() - I guess, that's why
it does not work.
Silly thought :)
Interestingly, ref count is 514, which looks suspiciously as a binary flag
1000000010. Is it possible that during 5.17/5.18 implementation of a "pin",
somehow binary flag was written to ref count, or something like '1 << ...'
happens?
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Thread overview: 182+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-30 11:28 [f2fs-dev] [Bug 216050] New: fsfs_gc occupies 100% cpu bugzilla-daemon
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