From ebc1ac164560a241d9bf1b7519062910c3f90a01 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 11 May 2009 23:35:03 +0200 Subject: ->write_super lock_super pushdown Push down lock_super into ->write_super instances and remove it from the caller. Following filesystem don't need ->s_lock in ->write_super and are skipped: * bfs, nilfs2 - no other uses of s_lock and have internal locks in ->write_super * ext2 - uses BKL in ext2_write_super and has internal calls without s_lock * reiserfs - no other uses of s_lock as has reiserfs_write_lock (BKL) in ->write_super * xfs - no other uses of s_lock and uses internal lock (buffer lock on superblock buffer) to serialize ->write_super. Also xfs_fs_write_super is superflous and will go away in the next merge window Signed-off-by: Christoph Hellwig Signed-off-by: Al Viro --- fs/sync.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'fs/sync.c') diff --git a/fs/sync.c b/fs/sync.c index 89c37f732afa..e9d56f6c0b74 100644 --- a/fs/sync.c +++ b/fs/sync.c @@ -33,10 +33,8 @@ static int __sync_filesystem(struct super_block *sb, int wait) else sync_quota_sb(sb, -1); sync_inodes_sb(sb, wait); - lock_super(sb); if (sb->s_dirt && sb->s_op->write_super) sb->s_op->write_super(sb); - unlock_super(sb); if (sb->s_op->sync_fs) sb->s_op->sync_fs(sb, wait); return __sync_blockdev(sb->s_bdev, wait); @@ -164,10 +162,8 @@ int file_fsync(struct file *filp, struct dentry *dentry, int datasync) /* sync the superblock to buffers */ sb = inode->i_sb; - lock_super(sb); if (sb->s_dirt && sb->s_op->write_super) sb->s_op->write_super(sb); - unlock_super(sb); /* .. finally sync the buffers to disk */ err = sync_blockdev(sb->s_bdev); -- cgit v1.2.3-58-ga151