diff options
Diffstat (limited to 'fs/exfat/exfat_fs.h')
| -rw-r--r-- | fs/exfat/exfat_fs.h | 34 |
1 files changed, 24 insertions, 10 deletions
diff --git a/fs/exfat/exfat_fs.h b/fs/exfat/exfat_fs.h index ecc5db952deb..f8ead4d47ef0 100644 --- a/fs/exfat/exfat_fs.h +++ b/fs/exfat/exfat_fs.h @@ -10,11 +10,10 @@ #include <linux/ratelimit.h> #include <linux/nls.h> #include <linux/blkdev.h> +#include <uapi/linux/exfat.h> #define EXFAT_ROOT_INO 1 -#define EXFAT_CLUSTERS_UNTRACKED (~0u) - /* * exfat error flags */ @@ -148,6 +147,9 @@ enum { #define DIR_CACHE_SIZE \ (DIV_ROUND_UP(EXFAT_DEN_TO_B(ES_MAX_ENTRY_NUM), SECTOR_SIZE) + 1) +/* Superblock flags */ +#define EXFAT_FLAGS_SHUTDOWN 1 + struct exfat_dentry_namebuf { char *lfn; int lfnbuf_len; /* usually MAX_UNINAME_BUF_SIZE */ @@ -200,7 +202,9 @@ struct exfat_entry_set_cache { #define IS_DYNAMIC_ES(es) ((es)->__bh != (es)->bh) struct exfat_dir_entry { + /* the cluster where file dentry is located */ struct exfat_chain dir; + /* the index of file dentry in ->dir */ int entry; unsigned int type; unsigned int start_clu; @@ -267,6 +271,8 @@ struct exfat_sb_info { unsigned int clu_srch_ptr; /* cluster search pointer */ unsigned int used_clusters; /* number of used clusters */ + unsigned long s_exfat_flags; /* Exfat superblock flags */ + struct mutex s_lock; /* superblock lock */ struct mutex bitmap_lock; /* bitmap lock */ struct exfat_mount_options options; @@ -284,7 +290,9 @@ struct exfat_sb_info { * EXFAT file system inode in-memory data */ struct exfat_inode_info { + /* the cluster where file dentry is located */ struct exfat_chain dir; + /* the index of file dentry in ->dir */ int entry; unsigned int type; unsigned short attr; @@ -309,13 +317,6 @@ struct exfat_inode_info { /* for avoiding the race between alloc and free */ unsigned int cache_valid_id; - /* - * NOTE: i_size_ondisk is 64bits, so must hold ->inode_lock to access. - * physically allocated size. - */ - loff_t i_size_ondisk; - /* block-aligned i_size (used in cont_write_begin) */ - loff_t i_size_aligned; /* on-disk position of directory entry or 0 */ loff_t i_pos; loff_t valid_size; @@ -338,6 +339,11 @@ static inline struct exfat_inode_info *EXFAT_I(struct inode *inode) return container_of(inode, struct exfat_inode_info, vfs_inode); } +static inline int exfat_forced_shutdown(struct super_block *sb) +{ + return test_bit(EXFAT_FLAGS_SHUTDOWN, &EXFAT_SB(sb)->s_exfat_flags); +} + /* * If ->i_mode can't hold 0222 (i.e. ATTR_RO), we use ->i_attrs to * save ATTR_RO instead of ->i_mode. @@ -417,6 +423,11 @@ static inline bool is_valid_cluster(struct exfat_sb_info *sbi, return clus >= EXFAT_FIRST_CLUSTER && clus < sbi->num_clusters; } +static inline loff_t exfat_ondisk_size(const struct inode *inode) +{ + return ((loff_t)inode->i_blocks) << 9; +} + /* super.c */ int exfat_set_volume_dirty(struct super_block *sb); int exfat_clear_volume_dirty(struct super_block *sb); @@ -443,7 +454,7 @@ int exfat_count_num_clusters(struct super_block *sb, int exfat_load_bitmap(struct super_block *sb); void exfat_free_bitmap(struct exfat_sb_info *sbi); int exfat_set_bitmap(struct inode *inode, unsigned int clu, bool sync); -void exfat_clear_bitmap(struct inode *inode, unsigned int clu, bool sync); +int exfat_clear_bitmap(struct inode *inode, unsigned int clu, bool sync); unsigned int exfat_find_free_bitmap(struct super_block *sb, unsigned int clu); int exfat_count_used_clusters(struct super_block *sb, unsigned int *ret_count); int exfat_trim_fs(struct inode *inode, struct fstrim_range *range); @@ -461,6 +472,7 @@ int exfat_file_fsync(struct file *file, loff_t start, loff_t end, int datasync); long exfat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); long exfat_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); +int exfat_force_shutdown(struct super_block *sb, u32 flags); /* namei.c */ extern const struct dentry_operations exfat_dentry_ops; @@ -498,6 +510,8 @@ struct exfat_dentry *exfat_get_dentry_cached(struct exfat_entry_set_cache *es, int exfat_get_dentry_set(struct exfat_entry_set_cache *es, struct super_block *sb, struct exfat_chain *p_dir, int entry, unsigned int num_entries); +#define exfat_get_dentry_set_by_ei(es, sb, ei) \ + exfat_get_dentry_set(es, sb, &(ei)->dir, (ei)->entry, ES_ALL_ENTRIES) int exfat_get_empty_dentry_set(struct exfat_entry_set_cache *es, struct super_block *sb, struct exfat_chain *p_dir, int entry, unsigned int num_entries); |