ext4: Rename ext4dev to ext4

The ext4 filesystem is getting stable enough that it's time to drop
the "dev" prefix.  Also remove the requirement for the TEST_FILESYS
flag.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

10 files changed, 67 insertions, 46 deletions

diff --git a/fs/ext4/Makefile b/fs/ext4/Makefile
index ac6fa8ca0a2f..a8ff003a00f7 100644
--- a/fs/ext4/Makefile
+++ b/fs/ext4/Makefile
@@ -2,12 +2,12 @@
 # Makefile for the linux ext4-filesystem routines.
 #
 
-obj-$(CONFIG_EXT4DEV_FS) += ext4dev.o
+obj-$(CONFIG_EXT4_FS) += ext4.o
 
-ext4dev-y       := balloc.o bitmap.o dir.o file.o fsync.o ialloc.o inode.o \
+ext4-y  := balloc.o bitmap.o dir.o file.o fsync.o ialloc.o inode.o \
                    ioctl.o namei.o super.o symlink.o hash.o resize.o extents.o \
                    ext4_jbd2.o migrate.o mballoc.o
 
-ext4dev-$(CONFIG_EXT4DEV_FS_XATTR)      += xattr.o xattr_user.o xattr_trusted.o
-ext4dev-$(CONFIG_EXT4DEV_FS_POSIX_ACL)  += acl.o
-ext4dev-$(CONFIG_EXT4DEV_FS_SECURITY)   += xattr_security.o
+ext4-$(CONFIG_EXT4_FS_XATTR)            += xattr.o xattr_user.o xattr_trusted.o
+ext4-$(CONFIG_EXT4_FS_POSIX_ACL)        += acl.o
+ext4-$(CONFIG_EXT4_FS_SECURITY)         += xattr_security.o
diff --git a/fs/ext4/acl.h b/fs/ext4/acl.h
index 4c9948f69f8b..cb45257a246e 100644
--- a/fs/ext4/acl.h
+++ b/fs/ext4/acl.h
@@ -51,7 +51,7 @@ static inline int ext4_acl_count(size_t size)
         }
 }
 
-#ifdef CONFIG_EXT4DEV_FS_POSIX_ACL
+#ifdef CONFIG_EXT4_FS_POSIX_ACL
 
 /* Value for inode->u.ext4_i.i_acl and inode->u.ext4_i.i_default_acl
    if the ACL has not been cached */
@@ -62,7 +62,7 @@ extern int ext4_permission(struct inode *, int);
 extern int ext4_acl_chmod(struct inode *);
 extern int ext4_init_acl(handle_t *, struct inode *, struct inode *);
 
-#else  /* CONFIG_EXT4DEV_FS_POSIX_ACL */
+#else  /* CONFIG_EXT4_FS_POSIX_ACL */
 #include <linux/sched.h>
 #define ext4_permission NULL
 
@@ -77,5 +77,5 @@ ext4_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
 {
         return 0;
 }
-#endif  /* CONFIG_EXT4DEV_FS_POSIX_ACL */
+#endif  /* CONFIG_EXT4_FS_POSIX_ACL */
 
diff --git a/fs/ext4/ext4_i.h b/fs/ext4/ext4_i.h
index 2875eeca1727..5c124c0ac6d3 100644
--- a/fs/ext4/ext4_i.h
+++ b/fs/ext4/ext4_i.h
@@ -66,7 +66,7 @@ struct ext4_inode_info {
         __u32   i_state;                /* Dynamic state flags for ext4 */
 
         ext4_lblk_t             i_dir_start_lookup;
-#ifdef CONFIG_EXT4DEV_FS_XATTR
+#ifdef CONFIG_EXT4_FS_XATTR
         /*
          * Extended attributes can be read independently of the main file
          * data. Taking i_mutex even when reading would cause contention
@@ -76,7 +76,7 @@ struct ext4_inode_info {
          */
         struct rw_semaphore xattr_sem;
 #endif
-#ifdef CONFIG_EXT4DEV_FS_POSIX_ACL
+#ifdef CONFIG_EXT4_FS_POSIX_ACL
         struct posix_acl        *i_acl;
         struct posix_acl        *i_default_acl;
 #endif
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 6d5be156202a..6bd11fba71f7 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -165,7 +165,7 @@ const struct inode_operations ext4_file_inode_operations = {
         .truncate       = ext4_truncate,
         .setattr        = ext4_setattr,
         .getattr        = ext4_getattr,
-#ifdef CONFIG_EXT4DEV_FS_XATTR
+#ifdef CONFIG_EXT4_FS_XATTR
         .setxattr       = generic_setxattr,
         .getxattr       = generic_getxattr,
         .listxattr      = ext4_listxattr,
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index a4747867411f..9b4ec9decfd1 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4041,7 +4041,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
                 return inode;
 
         ei = EXT4_I(inode);
-#ifdef CONFIG_EXT4DEV_FS_POSIX_ACL
+#ifdef CONFIG_EXT4_FS_POSIX_ACL
         ei->i_acl = EXT4_ACL_NOT_CACHED;
         ei->i_default_acl = EXT4_ACL_NOT_CACHED;
 #endif
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 5295a9225cf9..92db9e945147 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -1773,7 +1773,7 @@ retry:
         err = PTR_ERR(inode);
         if (!IS_ERR(inode)) {
                 init_special_inode(inode, inode->i_mode, rdev);
-#ifdef CONFIG_EXT4DEV_FS_XATTR
+#ifdef CONFIG_EXT4_FS_XATTR
                 inode->i_op = &ext4_special_inode_operations;
 #endif
                 err = ext4_add_nondir(handle, dentry, inode);
@@ -2456,7 +2456,7 @@ const struct inode_operations ext4_dir_inode_operations = {
         .mknod          = ext4_mknod,
         .rename         = ext4_rename,
         .setattr        = ext4_setattr,
-#ifdef CONFIG_EXT4DEV_FS_XATTR
+#ifdef CONFIG_EXT4_FS_XATTR
         .setxattr       = generic_setxattr,
         .getxattr       = generic_getxattr,
         .listxattr      = ext4_listxattr,
@@ -2467,7 +2467,7 @@ const struct inode_operations ext4_dir_inode_operations = {
 
 const struct inode_operations ext4_special_inode_operations = {
         .setattr        = ext4_setattr,
-#ifdef CONFIG_EXT4DEV_FS_XATTR
+#ifdef CONFIG_EXT4_FS_XATTR
         .setxattr       = generic_setxattr,
         .getxattr       = generic_getxattr,
         .listxattr      = ext4_listxattr,
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 7d865608e817..0e661c569660 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -569,7 +569,7 @@ static struct inode *ext4_alloc_inode(struct super_block *sb)
         ei = kmem_cache_alloc(ext4_inode_cachep, GFP_NOFS);
         if (!ei)
                 return NULL;
-#ifdef CONFIG_EXT4DEV_FS_POSIX_ACL
+#ifdef CONFIG_EXT4_FS_POSIX_ACL
         ei->i_acl = EXT4_ACL_NOT_CACHED;
         ei->i_default_acl = EXT4_ACL_NOT_CACHED;
 #endif
@@ -605,7 +605,7 @@ static void init_once(void *foo)
         struct ext4_inode_info *ei = (struct ext4_inode_info *) foo;
 
         INIT_LIST_HEAD(&ei->i_orphan);
-#ifdef CONFIG_EXT4DEV_FS_XATTR
+#ifdef CONFIG_EXT4_FS_XATTR
         init_rwsem(&ei->xattr_sem);
 #endif
         init_rwsem(&ei->i_data_sem);
@@ -631,7 +631,7 @@ static void destroy_inodecache(void)
 
 static void ext4_clear_inode(struct inode *inode)
 {
-#ifdef CONFIG_EXT4DEV_FS_POSIX_ACL
+#ifdef CONFIG_EXT4_FS_POSIX_ACL
         if (EXT4_I(inode)->i_acl &&
                         EXT4_I(inode)->i_acl != EXT4_ACL_NOT_CACHED) {
                 posix_acl_release(EXT4_I(inode)->i_acl);
@@ -720,7 +720,7 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs)
                 seq_puts(seq, ",debug");
         if (test_opt(sb, OLDALLOC))
                 seq_puts(seq, ",oldalloc");
-#ifdef CONFIG_EXT4DEV_FS_XATTR
+#ifdef CONFIG_EXT4_FS_XATTR
         if (test_opt(sb, XATTR_USER) &&
                 !(def_mount_opts & EXT4_DEFM_XATTR_USER))
                 seq_puts(seq, ",user_xattr");
@@ -729,7 +729,7 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs)
                 seq_puts(seq, ",nouser_xattr");
         }
 #endif
-#ifdef CONFIG_EXT4DEV_FS_POSIX_ACL
+#ifdef CONFIG_EXT4_FS_POSIX_ACL
         if (test_opt(sb, POSIX_ACL) && !(def_mount_opts & EXT4_DEFM_ACL))
                 seq_puts(seq, ",acl");
         if (!test_opt(sb, POSIX_ACL) && (def_mount_opts & EXT4_DEFM_ACL))
@@ -1078,7 +1078,7 @@ static int parse_options(char *options, struct super_block *sb,
                 case Opt_orlov:
                         clear_opt(sbi->s_mount_opt, OLDALLOC);
                         break;
-#ifdef CONFIG_EXT4DEV_FS_XATTR
+#ifdef CONFIG_EXT4_FS_XATTR
                 case Opt_user_xattr:
                         set_opt(sbi->s_mount_opt, XATTR_USER);
                         break;
@@ -1092,7 +1092,7 @@ static int parse_options(char *options, struct super_block *sb,
                                "not supported\n");
                         break;
 #endif
-#ifdef CONFIG_EXT4DEV_FS_POSIX_ACL
+#ifdef CONFIG_EXT4_FS_POSIX_ACL
                 case Opt_acl:
                         set_opt(sbi->s_mount_opt, POSIX_ACL);
                         break;
@@ -1987,11 +1987,11 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
                 set_opt(sbi->s_mount_opt, GRPID);
         if (def_mount_opts & EXT4_DEFM_UID16)
                 set_opt(sbi->s_mount_opt, NO_UID32);
-#ifdef CONFIG_EXT4DEV_FS_XATTR
+#ifdef CONFIG_EXT4_FS_XATTR
         if (def_mount_opts & EXT4_DEFM_XATTR_USER)
                 set_opt(sbi->s_mount_opt, XATTR_USER);
 #endif
-#ifdef CONFIG_EXT4DEV_FS_POSIX_ACL
+#ifdef CONFIG_EXT4_FS_POSIX_ACL
         if (def_mount_opts & EXT4_DEFM_ACL)
                 set_opt(sbi->s_mount_opt, POSIX_ACL);
 #endif
@@ -2050,16 +2050,6 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
                        "running e2fsck is recommended\n");
 
         /*
-         * Since ext4 is still considered development code, we require
-         * that the TEST_FILESYS flag in s->flags be set.
-         */
-        if (!(le32_to_cpu(es->s_flags) & EXT2_FLAGS_TEST_FILESYS)) {
-                printk(KERN_WARNING "EXT4-fs: %s: not marked "
-                       "OK to use with test code.\n", sb->s_id);
-                goto failed_mount;
-        }
-
-        /*
          * Check feature flags regardless of the revision level, since we
          * previously didn't change the revision level when setting the flags,
          * so there is a chance incompat flags are set on a rev 0 filesystem.
@@ -3580,13 +3570,34 @@ const struct file_operations ext4_ui_proc_fops = {
 };
 #endif
 
+static struct file_system_type ext4_fs_type = {
+        .owner          = THIS_MODULE,
+        .name           = "ext4",
+        .get_sb         = ext4_get_sb,
+        .kill_sb        = kill_block_super,
+        .fs_flags       = FS_REQUIRES_DEV,
+};
+
+#ifdef CONFIG_EXT4DEV_COMPAT
+static int ext4dev_get_sb(struct file_system_type *fs_type,
+        int flags, const char *dev_name, void *data, struct vfsmount *mnt)
+{
+        printk(KERN_WARNING "EXT4-fs: Update your userspace programs "
+               "to mount using ext4\n");
+        printk(KERN_WARNING "EXT4-fs: ext4dev backwards compatibility "
+               "will go away by 2.6.31\n");
+        return get_sb_bdev(fs_type, flags, dev_name, data, ext4_fill_super, mnt);
+}
+
 static struct file_system_type ext4dev_fs_type = {
         .owner          = THIS_MODULE,
         .name           = "ext4dev",
-        .get_sb         = ext4_get_sb,
+        .get_sb         = ext4dev_get_sb,
         .kill_sb        = kill_block_super,
         .fs_flags       = FS_REQUIRES_DEV,
 };
+MODULE_ALIAS("ext4dev");
+#endif
 
 static int __init init_ext4_fs(void)
 {
@@ -3603,9 +3614,16 @@ static int __init init_ext4_fs(void)
         err = init_inodecache();
         if (err)
                 goto out1;
-        err = register_filesystem(&ext4dev_fs_type);
+        err = register_filesystem(&ext4_fs_type);
         if (err)
                 goto out;
+#ifdef CONFIG_EXT4DEV_COMPAT
+        err = register_filesystem(&ext4dev_fs_type);
+        if (err) {
+                unregister_filesystem(&ext4_fs_type);
+                goto out;
+        }
+#endif
         return 0;
 out:
         destroy_inodecache();
@@ -3618,7 +3636,10 @@ out2:
 
 static void __exit exit_ext4_fs(void)
 {
+        unregister_filesystem(&ext4_fs_type);
+#ifdef CONFIG_EXT4DEV_COMPAT
         unregister_filesystem(&ext4dev_fs_type);
+#endif
         destroy_inodecache();
         exit_ext4_xattr();
         exit_ext4_mballoc();
diff --git a/fs/ext4/symlink.c b/fs/ext4/symlink.c
index 0013d52f73bb..00740cb32be3 100644
--- a/fs/ext4/symlink.c
+++ b/fs/ext4/symlink.c
@@ -34,7 +34,7 @@ const struct inode_operations ext4_symlink_inode_operations = {
         .readlink       = generic_readlink,
         .follow_link    = page_follow_link_light,
         .put_link       = page_put_link,
-#ifdef CONFIG_EXT4DEV_FS_XATTR
+#ifdef CONFIG_EXT4_FS_XATTR
         .setxattr       = generic_setxattr,
         .getxattr       = generic_getxattr,
         .listxattr      = ext4_listxattr,
@@ -45,7 +45,7 @@ const struct inode_operations ext4_symlink_inode_operations = {
 const struct inode_operations ext4_fast_symlink_inode_operations = {
         .readlink       = generic_readlink,
         .follow_link    = ext4_follow_link,
-#ifdef CONFIG_EXT4DEV_FS_XATTR
+#ifdef CONFIG_EXT4_FS_XATTR
         .setxattr       = generic_setxattr,
         .getxattr       = generic_getxattr,
         .listxattr      = ext4_listxattr,
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 362b0edd3dbe..80626d516fee 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -99,12 +99,12 @@ static struct mb_cache *ext4_xattr_cache;
 
 static struct xattr_handler *ext4_xattr_handler_map[] = {
         [EXT4_XATTR_INDEX_USER]              = &ext4_xattr_user_handler,
-#ifdef CONFIG_EXT4DEV_FS_POSIX_ACL
+#ifdef CONFIG_EXT4_FS_POSIX_ACL
         [EXT4_XATTR_INDEX_POSIX_ACL_ACCESS]  = &ext4_xattr_acl_access_handler,
         [EXT4_XATTR_INDEX_POSIX_ACL_DEFAULT] = &ext4_xattr_acl_default_handler,
 #endif
         [EXT4_XATTR_INDEX_TRUSTED]           = &ext4_xattr_trusted_handler,
-#ifdef CONFIG_EXT4DEV_FS_SECURITY
+#ifdef CONFIG_EXT4_FS_SECURITY
         [EXT4_XATTR_INDEX_SECURITY]          = &ext4_xattr_security_handler,
 #endif
 };
@@ -112,11 +112,11 @@ static struct xattr_handler *ext4_xattr_handler_map[] = {
 struct xattr_handler *ext4_xattr_handlers[] = {
         &ext4_xattr_user_handler,
         &ext4_xattr_trusted_handler,
-#ifdef CONFIG_EXT4DEV_FS_POSIX_ACL
+#ifdef CONFIG_EXT4_FS_POSIX_ACL
         &ext4_xattr_acl_access_handler,
         &ext4_xattr_acl_default_handler,
 #endif
-#ifdef CONFIG_EXT4DEV_FS_SECURITY
+#ifdef CONFIG_EXT4_FS_SECURITY
         &ext4_xattr_security_handler,
 #endif
         NULL
diff --git a/fs/ext4/xattr.h b/fs/ext4/xattr.h
index 814ea58d4d57..8ede88b18c29 100644
--- a/fs/ext4/xattr.h
+++ b/fs/ext4/xattr.h
@@ -63,7 +63,7 @@ struct ext4_xattr_entry {
                 EXT4_I(inode)->i_extra_isize))
 #define IFIRST(hdr) ((struct ext4_xattr_entry *)((hdr)+1))
 
-# ifdef CONFIG_EXT4DEV_FS_XATTR
+# ifdef CONFIG_EXT4_FS_XATTR
 
 extern struct xattr_handler ext4_xattr_user_handler;
 extern struct xattr_handler ext4_xattr_trusted_handler;
@@ -88,7 +88,7 @@ extern void exit_ext4_xattr(void);
 
 extern struct xattr_handler *ext4_xattr_handlers[];
 
-# else  /* CONFIG_EXT4DEV_FS_XATTR */
+# else  /* CONFIG_EXT4_FS_XATTR */
 
 static inline int
 ext4_xattr_get(struct inode *inode, int name_index, const char *name,
@@ -141,9 +141,9 @@ ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize,
 
 #define ext4_xattr_handlers     NULL
 
-# endif  /* CONFIG_EXT4DEV_FS_XATTR */
+# endif  /* CONFIG_EXT4_FS_XATTR */
 
-#ifdef CONFIG_EXT4DEV_FS_SECURITY
+#ifdef CONFIG_EXT4_FS_SECURITY
 extern int ext4_init_security(handle_t *handle, struct inode *inode,
                                 struct inode *dir);
 #else