From 9e6c5829b07c9ba6668807631914efc557fab059 Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Thu, 12 Jul 2012 17:26:31 +0300 Subject: hfsplus: get rid of write_super This patch makes hfsplus stop using the VFS '->write_super()' method along with the 's_dirt' superblock 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 superblocks 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. Tested using fsstress from the LTP project. Signed-off-by: Artem Bityutskiy Signed-off-by: Al Viro --- fs/hfsplus/dir.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/hfsplus/dir.c') diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c index 378ea0c43f19..6b9f921ef2fa 100644 --- a/fs/hfsplus/dir.c +++ b/fs/hfsplus/dir.c @@ -316,7 +316,7 @@ static int hfsplus_link(struct dentry *src_dentry, struct inode *dst_dir, inode->i_ctime = CURRENT_TIME_SEC; mark_inode_dirty(inode); sbi->file_count++; - dst_dir->i_sb->s_dirt = 1; + hfsplus_mark_mdb_dirty(dst_dir->i_sb); out: mutex_unlock(&sbi->vh_mutex); return res; -- cgit v1.2.1