diff options
Diffstat (limited to 'fs/nilfs2/super.c')
| -rw-r--r-- | fs/nilfs2/super.c | 46 |
1 files changed, 1 insertions, 45 deletions
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c index 70e8613a195..ed8ec5718ae 100644 --- a/fs/nilfs2/super.c +++ b/fs/nilfs2/super.c @@ -67,7 +67,6 @@ MODULE_DESCRIPTION("A New Implementation of the Log-structured Filesystem " "(NILFS)"); MODULE_LICENSE("GPL"); -static void nilfs_write_super(struct super_block *sb); static int nilfs_remount(struct super_block *sb, int *flags, char *data); /** @@ -335,49 +334,6 @@ static void nilfs_put_super(struct super_block *sb) unlock_kernel(); } -/** - * nilfs_write_super - write super block(s) of NILFS - * @sb: super_block - * - * nilfs_write_super() gets a fs-dependent lock, writes super block(s), and - * clears s_dirt. This function is called in the section protected by - * lock_super(). - * - * The s_dirt flag is managed by each filesystem and we protect it by ns_sem - * of the struct the_nilfs. Lock order must be as follows: - * - * 1. lock_super() - * 2. down_write(&nilfs->ns_sem) - * - * Inside NILFS, locking ns_sem is enough to protect s_dirt and the buffer - * of the super block (nilfs->ns_sbp[]). - * - * In most cases, VFS functions call lock_super() before calling these - * methods. So we must be careful not to bring on deadlocks when using - * lock_super(); see generic_shutdown_super(), write_super(), and so on. - * - * Note that order of lock_kernel() and lock_super() depends on contexts - * of VFS. We should also note that lock_kernel() can be used in its - * protective section and only the outermost one has an effect. - */ -static void nilfs_write_super(struct super_block *sb) -{ - struct nilfs_sb_info *sbi = NILFS_SB(sb); - struct the_nilfs *nilfs = sbi->s_nilfs; - - down_write(&nilfs->ns_sem); - if (!(sb->s_flags & MS_RDONLY)) { - if (!nilfs_discontinued(nilfs) && - !nilfs_sb_need_update(nilfs)) { - up_write(&nilfs->ns_sem); - return; - } - nilfs_commit_super(sbi, nilfs_altsb_need_update(nilfs)); - } - sb->s_dirt = 0; - up_write(&nilfs->ns_sem); -} - static int nilfs_sync_fs(struct super_block *sb, int wait) { struct nilfs_sb_info *sbi = NILFS_SB(sb); @@ -558,7 +514,7 @@ static struct super_operations nilfs_sops = { /* .drop_inode = nilfs_drop_inode, */ .delete_inode = nilfs_delete_inode, .put_super = nilfs_put_super, - .write_super = nilfs_write_super, + /* .write_super = nilfs_write_super, */ .sync_fs = nilfs_sync_fs, /* .write_super_lockfs */ /* .unlockfs */ |