affs: add ->sync_fs
Add a ->sync_fs method for data integrity syncs. Factor out common code between affs_put_super, affs_write_super and the new affs_sync_fs into a helper. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Родитель
c475879556
Коммит
e28964365f
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@ -24,6 +24,19 @@ extern struct timezone sys_tz;
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static int affs_statfs(struct dentry *dentry, struct kstatfs *buf);
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static int affs_remount (struct super_block *sb, int *flags, char *data);
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static void
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affs_commit_super(struct super_block *sb, int clean)
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{
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struct affs_sb_info *sbi = AFFS_SB(sb);
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struct buffer_head *bh = sbi->s_root_bh;
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struct affs_root_tail *tail = AFFS_ROOT_TAIL(sb, bh);
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tail->bm_flag = cpu_to_be32(clean);
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secs_to_datestamp(get_seconds(), &tail->disk_change);
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affs_fix_checksum(sb, bh);
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mark_buffer_dirty(bh);
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}
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static void
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affs_put_super(struct super_block *sb)
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{
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@ -32,13 +45,8 @@ affs_put_super(struct super_block *sb)
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lock_kernel();
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if (!(sb->s_flags & MS_RDONLY)) {
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AFFS_ROOT_TAIL(sb, sbi->s_root_bh)->bm_flag = cpu_to_be32(1);
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secs_to_datestamp(get_seconds(),
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&AFFS_ROOT_TAIL(sb, sbi->s_root_bh)->disk_change);
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affs_fix_checksum(sb, sbi->s_root_bh);
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mark_buffer_dirty(sbi->s_root_bh);
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}
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if (!(sb->s_flags & MS_RDONLY))
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affs_commit_super(sb, 1);
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kfree(sbi->s_prefix);
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affs_free_bitmap(sb);
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@ -53,18 +61,13 @@ static void
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affs_write_super(struct super_block *sb)
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{
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int clean = 2;
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struct affs_sb_info *sbi = AFFS_SB(sb);
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lock_super(sb);
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if (!(sb->s_flags & MS_RDONLY)) {
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// if (sbi->s_bitmap[i].bm_bh) {
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// if (buffer_dirty(sbi->s_bitmap[i].bm_bh)) {
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// clean = 0;
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AFFS_ROOT_TAIL(sb, sbi->s_root_bh)->bm_flag = cpu_to_be32(clean);
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secs_to_datestamp(get_seconds(),
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&AFFS_ROOT_TAIL(sb, sbi->s_root_bh)->disk_change);
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affs_fix_checksum(sb, sbi->s_root_bh);
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mark_buffer_dirty(sbi->s_root_bh);
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affs_commit_super(sb, clean);
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sb->s_dirt = !clean; /* redo until bitmap synced */
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} else
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sb->s_dirt = 0;
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@ -73,6 +76,16 @@ affs_write_super(struct super_block *sb)
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pr_debug("AFFS: write_super() at %lu, clean=%d\n", get_seconds(), clean);
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}
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static int
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affs_sync_fs(struct super_block *sb, int wait)
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{
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lock_super(sb);
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affs_commit_super(sb, 2);
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sb->s_dirt = 0;
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unlock_super(sb);
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return 0;
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}
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static struct kmem_cache * affs_inode_cachep;
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static struct inode *affs_alloc_inode(struct super_block *sb)
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@ -130,6 +143,7 @@ static const struct super_operations affs_sops = {
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.clear_inode = affs_clear_inode,
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.put_super = affs_put_super,
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.write_super = affs_write_super,
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.sync_fs = affs_sync_fs,
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.statfs = affs_statfs,
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.remount_fs = affs_remount,
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.show_options = generic_show_options,
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