Ported from JBD changes from Arjan van de Ven <[EMAIL PROTECTED]>
-------------------------------------------
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
X-Git-Url:
http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=44d306e1508fef6fa7a6eb15a1aba86ef68389a6
[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 <[EMAIL PROTECTED]>
---
---
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,
spin_lock_init(&transaction->t_handle_lock);
/* 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);
add_timer(&journal->j_commit_timer);
J_ASSERT(journal->j_running_transaction == NULL);
--
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