fs/gfs2/ops_fstype.c

72 static struct gfs2_sbd *init_sbd(struct super_block *sb)
81 	sdp->sd_vfs = sb;
85 	sb->s_fs_info = sdp;
117 	mapping->host = sb->s_bdev->bd_inode;
160 	struct gfs2_sb_host *sb = &sdp->sd_sb;
162 	if (sb->sb_magic != GFS2_MAGIC ||
163 	    sb->sb_type != GFS2_METATYPE_SB) {
169 	if (sb->sb_fs_format < GFS2_FS_FORMAT_MIN ||
170 	    sb->sb_fs_format > GFS2_FS_FORMAT_MAX ||
171 	    sb->sb_multihost_format != GFS2_FORMAT_MULTI) {
176 	if (sb->sb_bsize < 512 || sb->sb_bsize > PAGE_SIZE ||
177 	    (sb->sb_bsize & (sb->sb_bsize - 1))) {
181 	if (sb->sb_bsize_shift != ffs(sb->sb_bsize) - 1) {
190 	struct gfs2_sb_host *sb = &sdp->sd_sb;
193 	sb->sb_magic = be32_to_cpu(str->sb_header.mh_magic);
194 	sb->sb_type = be32_to_cpu(str->sb_header.mh_type);
195 	sb->sb_fs_format = be32_to_cpu(str->sb_fs_format);
196 	sb->sb_multihost_format = be32_to_cpu(str->sb_multihost_format);
197 	sb->sb_bsize = be32_to_cpu(str->sb_bsize);
198 	sb->sb_bsize_shift = be32_to_cpu(str->sb_bsize_shift);
199 	sb->sb_master_dir.no_addr = be64_to_cpu(str->sb_master_dir.no_addr);
200 	sb->sb_master_dir.no_formal_ino = be64_to_cpu(str->sb_master_dir.no_formal_ino);
201 	sb->sb_root_dir.no_addr = be64_to_cpu(str->sb_root_dir.no_addr);
202 	sb->sb_root_dir.no_formal_ino = be64_to_cpu(str->sb_root_dir.no_formal_ino);
204 	memcpy(sb->sb_lockproto, str->sb_lockproto, GFS2_LOCKNAME_LEN);
205 	memcpy(sb->sb_locktable, str->sb_locktable, GFS2_LOCKNAME_LEN);
221  * the sb is read again under the lock to establish the location of
230 	struct super_block *sb = sdp->sd_vfs;
240 	bio_init(&bio, sb->s_bdev, &bvec, 1, REQ_OP_READ | REQ_META);
241 	bio.bi_iter.bi_sector = sector * (sb->s_blocksize >> 9);
434 static int gfs2_lookup_root(struct super_block *sb, struct dentry **dptr,
437 	struct gfs2_sbd *sdp = sb->s_fs_info;
441 	inode = gfs2_inode_lookup(sb, DT_DIR, no_addr, 0,
458 	struct super_block *sb = sdp->sd_vfs;
478 		sb->s_xattr = gfs2_xattr_handlers_max;
482 		sb->s_xattr = gfs2_xattr_handlers_min;
490 	if (sdp->sd_sb.sb_bsize < bdev_logical_block_size(sb->s_bdev)) {
494 		       sdp->sd_sb.sb_bsize, bdev_logical_block_size(sb->s_bdev));
504 	sb_set_blocksize(sb, sdp->sd_sb.sb_bsize);
508 	ret = gfs2_lookup_root(sb, &sdp->sd_root_dir, no_addr, "root");
514 	ret = gfs2_lookup_root(sb, &sdp->sd_master_dir, no_addr, "master");
519 	sb->s_root = dget(sdp->sd_args.ar_meta ? sdp->sd_master_dir : sdp->sd_root_dir);
1072 	struct super_block *sb = sdp->sd_vfs;
1076 	sprintf(ro, "RDONLY=%d", sb_rdonly(sb));
1128  * @sb: The VFS superblock
1133 static int gfs2_fill_super(struct super_block *sb, struct fs_context *fc)
1141 	sdp = init_sbd(sb);
1149                 sb->s_flags |= SB_RDONLY;
1153 		sb->s_flags |= SB_POSIXACL;
1157 	sb->s_flags |= SB_NOSEC;
1158 	sb->s_magic = GFS2_MAGIC;
1159 	sb->s_op = &gfs2_super_ops;
1160 	sb->s_d_op = &gfs2_dops;
1161 	sb->s_export_op = &gfs2_export_ops;
1162 	sb->s_qcop = &gfs2_quotactl_ops;
1163 	sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP;
1164 	sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
1165 	sb->s_time_gran = 1;
1166 	sb->s_maxbytes = MAX_LFS_FILESIZE;
1170 	sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, 512);
1171 	sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits;
1258 	if (!sb_rdonly(sb)) {
1268 	if (!sb_rdonly(sb))
1290 	if (sb->s_root)
1291 		dput(sb->s_root);
1292 	sb->s_root = NULL;
1306 	sb->s_fs_info = NULL;
1535 	struct super_block *sb = fc->root->d_sb;
1536 	struct gfs2_sbd *sdp = sb->s_fs_info;
1542 	sync_filesystem(sb);
1580 	if ((sb->s_flags ^ fc->sb_flags) & SB_RDONLY) {
1592 		sb->s_flags |= SB_POSIXACL;
1594 		sb->s_flags &= ~SB_POSIXACL;
1711  * @sb: the superblock
1729 static void gfs2_evict_inodes(struct super_block *sb)
1732 	struct gfs2_sbd *sdp = sb->s_fs_info;
1736 	spin_lock(&sb->s_inode_list_lock);
1737 	list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
1746 		spin_unlock(&sb->s_inode_list_lock);
1752 		spin_lock(&sb->s_inode_list_lock);
1754 	spin_unlock(&sb->s_inode_list_lock);
1758 static void gfs2_kill_sb(struct super_block *sb)
1760 	struct gfs2_sbd *sdp = sb->s_fs_info;
1763 		kill_block_super(sb);
1772 	shrink_dcache_sb(sb);
1774 	gfs2_evict_inodes(sb);
1785 	kill_block_super(sb);