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authorArtem Bityutskiy <artem.bityutskiy@linux.intel.com>2012-06-01 17:18:08 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2012-06-01 10:37:36 -0400
commit033369d1af1264abc23bea2e174aa47cdd212f6f (patch)
treeb00e709d1e9270b1708488da7a596a8dff72541d /fs/reiserfs/journal.c
parent5c5fd81962271d4ee2984837fef4ec37e689aa41 (diff)
downloadop-kernel-dev-033369d1af1264abc23bea2e174aa47cdd212f6f.zip
op-kernel-dev-033369d1af1264abc23bea2e174aa47cdd212f6f.tar.gz
reiserfs: get rid of resierfs_sync_super
This patch stops reiserfs using the VFS 'write_super()' method along with the s_dirt flag, because they are on their way out. The whole "superblock write-out" VFS infrastructure is served by the 'sync_supers()' kernel thread, which wakes up every 5 (by default) seconds and writes out all dirty superblock using the '->write_super()' call-back. But the problem with this thread is that it wastes power by waking up the system every 5 seconds, even if there are no diry superblocks, or there are no client file-systems which would need this (e.g., btrfs does not use '->write_super()'). So we want to kill it completely and thus, we need to make file-systems to stop using the '->write_super()' VFS service, and then remove it together with the kernel thread. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/reiserfs/journal.c')
-rw-r--r--fs/reiserfs/journal.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index e5e06dd..afcadcc 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -1923,6 +1923,8 @@ static int do_journal_release(struct reiserfs_transaction_handle *th,
* the workqueue job (flush_async_commit) needs this lock
*/
reiserfs_write_unlock(sb);
+
+ cancel_delayed_work_sync(&REISERFS_SB(sb)->old_work);
flush_workqueue(commit_wq);
if (!reiserfs_mounted_fs_count) {
@@ -3314,7 +3316,7 @@ int journal_mark_dirty(struct reiserfs_transaction_handle *th,
journal->j_first = cn;
journal->j_last = cn;
}
- sb->s_dirt = 1;
+ reiserfs_schedule_old_flush(sb);
return 0;
}
@@ -3952,7 +3954,7 @@ static int do_journal_end(struct reiserfs_transaction_handle *th,
** it tells us if we should continue with the journal_end, or just return
*/
if (!check_journal_end(th, sb, nblocks, flags)) {
- sb->s_dirt = 1;
+ reiserfs_schedule_old_flush(sb);
wake_queued_writers(sb);
reiserfs_async_progress_wait(sb);
goto out;
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