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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/reiserfs.h
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/reiserfs.h')
-rw-r--r--fs/reiserfs/reiserfs.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/reiserfs/reiserfs.h b/fs/reiserfs/reiserfs.h
index 5c70055..33215f5 100644
--- a/fs/reiserfs/reiserfs.h
+++ b/fs/reiserfs/reiserfs.h
@@ -480,6 +480,11 @@ struct reiserfs_sb_info {
struct dentry *priv_root; /* root of /.reiserfs_priv */
struct dentry *xattr_root; /* root of /.reiserfs_priv/xattrs */
int j_errno;
+
+ int work_queued; /* non-zero delayed work is queued */
+ struct delayed_work old_work; /* old transactions flush delayed work */
+ spinlock_t old_work_lock; /* protects old_work and work_queued */
+
#ifdef CONFIG_QUOTA
char *s_qf_names[MAXQUOTAS];
int s_jquota_fmt;
@@ -2487,6 +2492,7 @@ void reiserfs_abort(struct super_block *sb, int errno, const char *fmt, ...);
int reiserfs_allocate_list_bitmaps(struct super_block *s,
struct reiserfs_list_bitmap *, unsigned int);
+void reiserfs_schedule_old_flush(struct super_block *s);
void add_save_link(struct reiserfs_transaction_handle *th,
struct inode *inode, int truncate);
int remove_save_link(struct inode *inode, int truncate);
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