[Devel] [PATCH rh7 1/3] fs/sync: remove dead code

[Andrey Ryabinin]

Signed-off-by: Andrey Ryabinin <aryabinin at virtuozzo.com>
---
 fs/sync.c | 92 ---------------------------------------------------------------
 1 file changed, 92 deletions(-)

diff --git a/fs/sync.c b/fs/sync.c
index 7ac77bb..cb2c7c2 100644
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -99,98 +99,6 @@ static void fdatawait_one_bdev(struct block_device *bdev, void *arg)
 	filemap_fdatawait(bdev->bd_inode->i_mapping);
 }
 
-#if 0
-
-struct sync_sb {
-	struct list_head list;
-	struct super_block *sb;
-};
-
-static void sync_release_filesystems(struct list_head *sync_list)
-{
-	struct sync_sb *ss, *tmp;
-
-	list_for_each_entry_safe(ss, tmp, sync_list, list) {
-		list_del(&ss->list);
-		put_super(ss->sb);
-		kfree(ss);
-	}
-}
-
-static int sync_filesystem_collected(struct list_head *sync_list, struct super_block *sb)
-{
-	struct sync_sb *ss;
-
-	list_for_each_entry(ss, sync_list, list)
-		if (ss->sb == sb)
-			return 1;
-	return 0;
-}
-
-static int sync_collect_filesystems(struct ve_struct *ve, struct list_head *sync_list)
-{
-	struct vfsmount *root = ve->root_path.mnt;
-	struct vfsmount *mnt;
-	struct sync_sb *ss;
-	int ret = 0;
-
-	BUG_ON(!list_empty(sync_list));
-
-	down_read(&namespace_sem);
-	for (mnt = root; mnt; mnt = next_mnt(mnt, root)) {
-		if (sync_filesystem_collected(sync_list, mnt->mnt_sb))
-			continue;
-
-		ss = kmalloc(sizeof(*ss), GFP_KERNEL);
-		if (ss == NULL) {
-			ret = -ENOMEM;
-			break;
-		}
-		ss->sb = mnt->mnt_sb;
-		/*
-		 * We hold mount point and thus can be sure, that superblock is
-		 * alive. And it means, that we can safely increase it's usage
-		 * counter.
-		 */
-		spin_lock(&sb_lock);
-		ss->sb->s_count++;
-		spin_unlock(&sb_lock);
-		list_add_tail(&ss->list, sync_list);
-	}
-	up_read(&namespace_sem);
-	return ret;
-}
-
-static void sync_filesystems_ve(struct ve_struct *ve, struct user_beancounter *ub, int wait)
-{
-	struct super_block *sb;
-	LIST_HEAD(sync_list);
-	struct sync_sb *ss;
-
-	mutex_lock(&ve->sync_mutex);		/* Could be down_interruptible */
-
-	/*
-	 * We don't need to care about allocating failure here. At least we
-	 * don't need to skip sync on such error.
-	 * Let's sync what we collected already instead.
-	 */
-	sync_collect_filesystems(ve, &sync_list);
-
-	list_for_each_entry(ss, &sync_list, list) {
-		sb = ss->sb;
-		down_read(&sb->s_umount);
-		if (!(sb->s_flags & MS_RDONLY) && sb->s_root && sb->s_bdi)
-			__sync_filesystem(sb, ub, wait);
-		up_read(&sb->s_umount);
-	}
-
-	sync_release_filesystems(&sync_list);
-
-	mutex_unlock(&ve->sync_mutex);
-}
-
-#endif
-
 static int __ve_fsync_behavior(struct ve_struct *ve)
 {
 	if (ve->fsync_enable == 2)
-- 
2.4.10