diff options
| -rw-r--r-- | fs/fat/fat.h | 1 | ||||
| -rw-r--r-- | fs/fat/inode.c | 12 | ||||
| -rw-r--r-- | include/linux/msdos_fs.h | 3 |
3 files changed, 15 insertions, 1 deletions
diff --git a/fs/fat/fat.h b/fs/fat/fat.h index 66994f316e18..951d12b61b58 100644 --- a/fs/fat/fat.h +++ b/fs/fat/fat.h @@ -82,6 +82,7 @@ struct msdos_sb_info { int fatent_shift; struct fatent_operations *fatent_ops; struct inode *fat_inode; + struct inode *fsinfo_inode; struct ratelimit_state ratelimit; diff --git a/fs/fat/inode.c b/fs/fat/inode.c index b3d290c1b513..84c602b4bb25 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -490,6 +490,7 @@ static void fat_put_super(struct super_block *sb) if (sb->s_dirt) fat_write_super(sb); + iput(sbi->fsinfo_inode); iput(sbi->fat_inode); unload_nls(sbi->nls_disk); @@ -1244,6 +1245,7 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, void (*setup)(struct super_block *)) { struct inode *root_inode = NULL, *fat_inode = NULL; + struct inode *fsinfo_inode = NULL; struct buffer_head *bh; struct fat_boot_sector *b; struct msdos_sb_info *sbi; @@ -1490,6 +1492,14 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, goto out_fail; MSDOS_I(fat_inode)->i_pos = 0; sbi->fat_inode = fat_inode; + + fsinfo_inode = new_inode(sb); + if (!fsinfo_inode) + goto out_fail; + fsinfo_inode->i_ino = MSDOS_FSINFO_INO; + sbi->fsinfo_inode = fsinfo_inode; + insert_inode_hash(fsinfo_inode); + root_inode = new_inode(sb); if (!root_inode) goto out_fail; @@ -1516,6 +1526,8 @@ out_invalid: fat_msg(sb, KERN_INFO, "Can't find a valid FAT filesystem"); out_fail: + if (fsinfo_inode) + iput(fsinfo_inode); if (fat_inode) iput(fat_inode); unload_nls(sbi->nls_io); diff --git a/include/linux/msdos_fs.h b/include/linux/msdos_fs.h index 34066e65fdeb..11cc2ac67e75 100644 --- a/include/linux/msdos_fs.h +++ b/include/linux/msdos_fs.h @@ -21,8 +21,9 @@ #define CT_LE_W(v) cpu_to_le16(v) #define CT_LE_L(v) cpu_to_le32(v) +#define MSDOS_ROOT_INO 1 /* The root inode number */ +#define MSDOS_FSINFO_INO 2 /* Used for managing the FSINFO block */ -#define MSDOS_ROOT_INO 1 /* == MINIX_ROOT_INO */ #define MSDOS_DIR_BITS 5 /* log2(sizeof(struct msdos_dir_entry)) */ /* directory limit */ |