lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:	Thu, 17 Jan 2008 11:48:17 -0800
From:	Mingming Cao <>
To:	Andrew Morton <>
	Arjan van de Ven <>
Subject: [PATCH 3/4]JBD2: user of the jiffies rounding code

Ported from JBD changes from Arjan van de Ven <>
Date: Sun, 10 Dec 2006 10:21:26 +0000 (-0800)
Subject: [PATCH] user of the jiffies rounding code: JBD
X-Git-Tag: v2.6.20-rc1~15^2~43

[PATCH] user of the jiffies rounding code: JBD

This patch introduces a user: of the round_jiffies() function; the "5 second"
ext3/jbd wakeup.

While "every 5 seconds" doesn't sound as a problem, there can be many of these
(and these timers do add up over all the kernel).  The "5 second" wakeup isn't
really timing sensitive; in addition even with rounding it'll still happen
every 5 seconds (with the exception of the very first time, which is likely to
be rounded up to somewhere closer to 6 seconds)

Signed-off-by: Mingming Cao <>

 fs/jbd2/transaction.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6.24-rc7/fs/jbd2/transaction.c
--- linux-2.6.24-rc7.orig/fs/jbd2/transaction.c	2008-01-16 15:41:14.000000000 -0800
+++ linux-2.6.24-rc7/fs/jbd2/transaction.c	2008-01-16 17:49:48.000000000 -0800
@@ -54,7 +54,7 @@ jbd2_get_transaction(journal_t *journal,
 	/* Set up the commit timer for the new transaction. */
-	journal->j_commit_timer.expires = transaction->t_expires;
+	journal->j_commit_timer.expires = round_jiffies(transaction->t_expires);
 	J_ASSERT(journal->j_running_transaction == NULL);


To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists