diff options
| -rw-r--r-- | fs/gfs2/main.c | 9 | ||||
| -rw-r--r-- | fs/gfs2/ops_fstype.c | 58 | ||||
| -rw-r--r-- | fs/gfs2/ops_fstype.h | 1 |
3 files changed, 45 insertions, 23 deletions
diff --git a/fs/gfs2/main.c b/fs/gfs2/main.c index c541777..c8d17b7 100644 --- a/fs/gfs2/main.c +++ b/fs/gfs2/main.c @@ -64,11 +64,17 @@ static int __init init_gfs2_fs(void) if (error) goto fail; + error = register_filesystem(&gfs2meta_fs_type); + if (error) + goto fail_unregister; + printk("GFS2 (built %s %s) installed\n", __DATE__, __TIME__); return 0; - fail: +fail_unregister: + unregister_filesystem(&gfs2_fs_type); +fail: if (gfs2_bufdata_cachep) kmem_cache_destroy(gfs2_bufdata_cachep); @@ -90,6 +96,7 @@ static int __init init_gfs2_fs(void) static void __exit exit_gfs2_fs(void) { unregister_filesystem(&gfs2_fs_type); + unregister_filesystem(&gfs2meta_fs_type); kmem_cache_destroy(gfs2_bufdata_cachep); kmem_cache_destroy(gfs2_inode_cachep); diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index c3b830b..8d6d941 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -113,9 +113,9 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb) return sdp; } -static void init_vfs(struct gfs2_sbd *sdp) +static void init_vfs(struct super_block *sb, unsigned noatime) { - struct super_block *sb = sdp->sd_vfs; + struct gfs2_sbd *sdp = sb->s_fs_info; sb->s_magic = GFS2_MAGIC; sb->s_op = &gfs2_super_ops; @@ -123,18 +123,10 @@ static void init_vfs(struct gfs2_sbd *sdp) sb->s_maxbytes = MAX_LFS_FILESIZE; if (sb->s_flags & (MS_NOATIME | MS_NODIRATIME)) - set_bit(SDF_NOATIME, &sdp->sd_flags); + set_bit(noatime, &sdp->sd_flags); /* Don't let the VFS update atimes. GFS2 handles this itself. */ sb->s_flags |= MS_NOATIME | MS_NODIRATIME; - - /* Set up the buffer cache and fill in some fake block size values - to allow us to read-in the on-disk superblock. */ - sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); - sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; - sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - - GFS2_BASIC_BLOCK_SHIFT; - sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; } static int init_names(struct gfs2_sbd *sdp, int silent) @@ -291,18 +283,16 @@ static struct inode *gfs2_lookup_root(struct gfs2_sbd *sdp, error = gfs2_glock_get(sdp, inum->no_addr, &gfs2_inode_glops, CREATE, &gl); if (!error) { - error = gfs2_inode_get(gl, inum, - CREATE, &ip); + error = gfs2_inode_get(gl, inum, CREATE, &ip); if (!error) { - if (!error) - gfs2_inode_min_init(ip, DT_DIR); + gfs2_inode_min_init(ip, DT_DIR); inode = gfs2_ip2v(ip); gfs2_inode_put(ip); + gfs2_glock_put(gl); return inode; } gfs2_glock_put(gl); } - return ERR_PTR(error); } @@ -310,6 +300,7 @@ static int init_sb(struct gfs2_sbd *sdp, int silent, int undo) { struct super_block *sb = sdp->sd_vfs; struct gfs2_holder sb_gh; + struct gfs2_inum *inum; struct inode *inode; int error = 0; @@ -332,14 +323,15 @@ static int init_sb(struct gfs2_sbd *sdp, int silent, int undo) } /* Set up the buffer cache and SB for real */ - error = -EINVAL; if (sdp->sd_sb.sb_bsize < bdev_hardsect_size(sb->s_bdev)) { + error = -EINVAL; fs_err(sdp, "FS block size (%u) is too small for device " "block size (%u)\n", sdp->sd_sb.sb_bsize, bdev_hardsect_size(sb->s_bdev)); goto out; } if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { + error = -EINVAL; fs_err(sdp, "FS block size (%u) is too big for machine " "page size (%u)\n", sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); @@ -353,7 +345,10 @@ static int init_sb(struct gfs2_sbd *sdp, int silent, int undo) sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); /* Get the root inode */ - inode = gfs2_lookup_root(sdp, &sdp->sd_sb.sb_root_dir); + inum = &sdp->sd_sb.sb_root_dir; + if (sb->s_type == &gfs2meta_fs_type) + inum = &sdp->sd_sb.sb_master_dir; + inode = gfs2_lookup_root(sdp, inum); if (IS_ERR(inode)) { error = PTR_ERR(inode); fs_err(sdp, "can't read in root inode: %d\n", error); @@ -366,10 +361,8 @@ static int init_sb(struct gfs2_sbd *sdp, int silent, int undo) error = -ENOMEM; iput(inode); } - out: gfs2_glock_dq_uninit(&sb_gh); - return error; } @@ -791,7 +784,15 @@ static int fill_super(struct super_block *sb, void *data, int silent) goto fail; } - init_vfs(sdp); + init_vfs(sb, SDF_NOATIME); + + /* Set up the buffer cache and fill in some fake block size values + to allow us to read-in the on-disk superblock. */ + sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); + sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; + sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - + GFS2_BASIC_BLOCK_SHIFT; + sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; error = init_names(sdp, silent); if (error) @@ -881,11 +882,24 @@ static struct super_block *gfs2_get_sb(struct file_system_type *fs_type, return get_sb_bdev(fs_type, flags, dev_name, data, fill_super); } +static void gfs2_kill_sb(struct super_block *sb) +{ + kill_block_super(sb); +} + struct file_system_type gfs2_fs_type = { .name = "gfs2", .fs_flags = FS_REQUIRES_DEV, .get_sb = gfs2_get_sb, - .kill_sb = kill_block_super, + .kill_sb = gfs2_kill_sb, + .owner = THIS_MODULE, +}; + +struct file_system_type gfs2meta_fs_type = { + .name = "gfs2meta", + .fs_flags = FS_REQUIRES_DEV, + .get_sb = gfs2_get_sb, + .kill_sb = gfs2_kill_sb, .owner = THIS_MODULE, }; diff --git a/fs/gfs2/ops_fstype.h b/fs/gfs2/ops_fstype.h index 7008364..c645287 100644 --- a/fs/gfs2/ops_fstype.h +++ b/fs/gfs2/ops_fstype.h @@ -11,5 +11,6 @@ #define __OPS_FSTYPE_DOT_H__ extern struct file_system_type gfs2_fs_type; +extern struct file_system_type gfs2meta_fs_type; #endif /* __OPS_FSTYPE_DOT_H__ */ |