--- zzzz-none-000/linux-3.10.107/fs/ext4/ext4.h 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/fs/ext4/ext4.h 2021-02-04 17:41:59.000000000 +0000 @@ -30,7 +30,9 @@ #include #include #include +#include #include +#include #ifdef __KERNEL__ #include #endif @@ -68,15 +70,6 @@ #define ext_debug(fmt, ...) no_printk(fmt, ##__VA_ARGS__) #endif -#define EXT4_ERROR_INODE(inode, fmt, a...) \ - ext4_error_inode((inode), __func__, __LINE__, 0, (fmt), ## a) - -#define EXT4_ERROR_INODE_BLOCK(inode, block, fmt, a...) \ - ext4_error_inode((inode), __func__, __LINE__, (block), (fmt), ## a) - -#define EXT4_ERROR_FILE(file, block, fmt, a...) \ - ext4_error_file((file), __func__, __LINE__, (block), (fmt), ## a) - /* data type for block offset of block group */ typedef int ext4_grpblk_t; @@ -89,6 +82,11 @@ /* data type for block group number */ typedef unsigned int ext4_group_t; +enum SHIFT_DIRECTION { + SHIFT_LEFT = 0, + SHIFT_RIGHT, +}; + /* * Flags used in mballoc's allocation_context flags field. * @@ -157,18 +155,8 @@ #define EXT4_MAP_MAPPED (1 << BH_Mapped) #define EXT4_MAP_UNWRITTEN (1 << BH_Unwritten) #define EXT4_MAP_BOUNDARY (1 << BH_Boundary) -#define EXT4_MAP_UNINIT (1 << BH_Uninit) -/* Sometimes (in the bigalloc case, from ext4_da_get_block_prep) the caller of - * ext4_map_blocks wants to know whether or not the underlying cluster has - * already been accounted for. EXT4_MAP_FROM_CLUSTER conveys to the caller that - * the requested mapping was from previously mapped (or delayed allocated) - * cluster. We use BH_AllocFromCluster only for this flag. BH_AllocFromCluster - * should never appear on buffer_head's state flags. - */ -#define EXT4_MAP_FROM_CLUSTER (1 << BH_AllocFromCluster) #define EXT4_MAP_FLAGS (EXT4_MAP_NEW | EXT4_MAP_MAPPED |\ - EXT4_MAP_UNWRITTEN | EXT4_MAP_BOUNDARY |\ - EXT4_MAP_UNINIT | EXT4_MAP_FROM_CLUSTER) + EXT4_MAP_UNWRITTEN | EXT4_MAP_BOUNDARY) struct ext4_map_blocks { ext4_fsblk_t m_pblk; @@ -178,42 +166,29 @@ }; /* - * For delayed allocation tracking - */ -struct mpage_da_data { - struct inode *inode; - sector_t b_blocknr; /* start block number of extent */ - size_t b_size; /* size of extent */ - unsigned long b_state; /* state of the extent */ - unsigned long first_page, next_page; /* extent of pages */ - struct writeback_control *wbc; - int io_done; - int pages_written; - int retval; -}; - -/* * Flags for ext4_io_end->flags */ #define EXT4_IO_END_UNWRITTEN 0x0001 -#define EXT4_IO_END_ERROR 0x0002 -#define EXT4_IO_END_DIRECT 0x0004 /* - * For converting uninitialized extents on a work queue. + * For converting unwritten extents on a work queue. 'handle' is used for + * buffered writeback. */ typedef struct ext4_io_end { struct list_head list; /* per-file finished IO list */ + handle_t *handle; /* handle reserved for extent + * conversion */ struct inode *inode; /* file being written to */ + struct bio *bio; /* Linked list of completed + * bios covering the extent */ unsigned int flag; /* unwritten or not */ loff_t offset; /* offset in the file */ ssize_t size; /* size of the extent */ - struct kiocb *iocb; /* iocb struct for AIO */ - int result; /* error value for AIO */ + atomic_t count; /* reference counter */ } ext4_io_end_t; struct ext4_io_submit { - int io_op; + struct writeback_control *io_wbc; struct bio *io_bio; ext4_io_end_t *io_end; sector_t io_next_block; @@ -387,7 +362,8 @@ #define EXT4_DIRTY_FL 0x00000100 #define EXT4_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */ #define EXT4_NOCOMPR_FL 0x00000400 /* Don't compress */ -#define EXT4_ECOMPR_FL 0x00000800 /* Compression error */ + /* nb: was previously EXT2_ECOMPR_FL */ +#define EXT4_ENCRYPT_FL 0x00000800 /* encrypted file */ /* End compression flags --- maybe not all used */ #define EXT4_INDEX_FL 0x00001000 /* hash-indexed directory */ #define EXT4_IMAGIC_FL 0x00002000 /* AFS directory */ @@ -400,6 +376,7 @@ #define EXT4_EA_INODE_FL 0x00200000 /* Inode used for large EA */ #define EXT4_EOFBLOCKS_FL 0x00400000 /* Blocks allocated beyond EOF */ #define EXT4_INLINE_DATA_FL 0x10000000 /* Inode has inline data. */ +#define EXT4_PROJINHERIT_FL 0x20000000 /* Create with parents projid */ #define EXT4_RESERVED_FL 0x80000000 /* reserved for ext4 lib */ #define EXT4_FL_USER_VISIBLE 0x004BDFFF /* User visible flags */ @@ -444,7 +421,7 @@ EXT4_INODE_DIRTY = 8, EXT4_INODE_COMPRBLK = 9, /* One or more compressed clusters */ EXT4_INODE_NOCOMPR = 10, /* Don't compress */ - EXT4_INODE_ECOMPR = 11, /* Compression error */ + EXT4_INODE_ENCRYPT = 11, /* Encrypted file */ /* End compression flags --- maybe not all used */ EXT4_INODE_INDEX = 12, /* hash-indexed directory */ EXT4_INODE_IMAGIC = 13, /* AFS directory */ @@ -457,6 +434,7 @@ EXT4_INODE_EA_INODE = 21, /* Inode used for large EA */ EXT4_INODE_EOFBLOCKS = 22, /* Blocks allocated beyond EOF */ EXT4_INODE_INLINE_DATA = 28, /* Data in inode. */ + EXT4_INODE_PROJINHERIT = 29, /* Create with parents projid */ EXT4_INODE_RESERVED = 31, /* reserved for ext4 lib */ }; @@ -489,7 +467,7 @@ CHECK_FLAG_VALUE(DIRTY); CHECK_FLAG_VALUE(COMPRBLK); CHECK_FLAG_VALUE(NOCOMPR); - CHECK_FLAG_VALUE(ECOMPR); + CHECK_FLAG_VALUE(ENCRYPT); CHECK_FLAG_VALUE(INDEX); CHECK_FLAG_VALUE(IMAGIC); CHECK_FLAG_VALUE(JOURNAL_DATA); @@ -501,6 +479,7 @@ CHECK_FLAG_VALUE(EA_INODE); CHECK_FLAG_VALUE(EOFBLOCKS); CHECK_FLAG_VALUE(INLINE_DATA); + CHECK_FLAG_VALUE(PROJINHERIT); CHECK_FLAG_VALUE(RESERVED); } @@ -550,26 +529,26 @@ /* * Flags used by ext4_map_blocks() */ - /* Allocate any needed blocks and/or convert an unitialized + /* Allocate any needed blocks and/or convert an unwritten extent to be an initialized ext4 */ #define EXT4_GET_BLOCKS_CREATE 0x0001 - /* Request the creation of an unitialized extent */ -#define EXT4_GET_BLOCKS_UNINIT_EXT 0x0002 -#define EXT4_GET_BLOCKS_CREATE_UNINIT_EXT (EXT4_GET_BLOCKS_UNINIT_EXT|\ + /* Request the creation of an unwritten extent */ +#define EXT4_GET_BLOCKS_UNWRIT_EXT 0x0002 +#define EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT (EXT4_GET_BLOCKS_UNWRIT_EXT|\ EXT4_GET_BLOCKS_CREATE) /* Caller is from the delayed allocation writeout path * finally doing the actual allocation of delayed blocks */ #define EXT4_GET_BLOCKS_DELALLOC_RESERVE 0x0004 /* caller is from the direct IO path, request to creation of an - unitialized extents if not allocated, split the uninitialized + unwritten extents if not allocated, split the unwritten extent if blocks has been preallocated already*/ #define EXT4_GET_BLOCKS_PRE_IO 0x0008 #define EXT4_GET_BLOCKS_CONVERT 0x0010 #define EXT4_GET_BLOCKS_IO_CREATE_EXT (EXT4_GET_BLOCKS_PRE_IO|\ - EXT4_GET_BLOCKS_CREATE_UNINIT_EXT) + EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT) /* Convert extent to initialized after IO complete */ #define EXT4_GET_BLOCKS_IO_CONVERT_EXT (EXT4_GET_BLOCKS_CONVERT|\ - EXT4_GET_BLOCKS_CREATE_UNINIT_EXT) + EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT) /* Eventual metadata allocation (due to growing extent tree) * should not fail, so try to use reserved blocks for that.*/ #define EXT4_GET_BLOCKS_METADATA_NOFAIL 0x0020 @@ -579,8 +558,20 @@ #define EXT4_GET_BLOCKS_KEEP_SIZE 0x0080 /* Do not take i_data_sem locking in ext4_map_blocks */ #define EXT4_GET_BLOCKS_NO_LOCK 0x0100 - /* Do not put hole in extent cache */ -#define EXT4_GET_BLOCKS_NO_PUT_HOLE 0x0200 + /* Convert written extents to unwritten */ +#define EXT4_GET_BLOCKS_CONVERT_UNWRITTEN 0x0200 + +/* + * The bit position of these flags must not overlap with any of the + * EXT4_GET_BLOCKS_*. They are used by ext4_find_extent(), + * read_extent_tree_block(), ext4_split_extent_at(), + * ext4_ext_insert_extent(), and ext4_ext_create_new_leaf(). + * EXT4_EX_NOCACHE is used to indicate that the we shouldn't be + * caching the extents when reading from the extent tree while a + * truncate or punch hole operation is in progress. + */ +#define EXT4_EX_NOCACHE 0x40000000 +#define EXT4_EX_FORCE_CACHE 0x20000000 /* * Flags used by ext4_free_blocks @@ -591,12 +582,15 @@ #define EXT4_FREE_BLOCKS_NO_QUOT_UPDATE 0x0008 #define EXT4_FREE_BLOCKS_NOFREE_FIRST_CLUSTER 0x0010 #define EXT4_FREE_BLOCKS_NOFREE_LAST_CLUSTER 0x0020 -#define EXT4_FREE_BLOCKS_RESERVE 0x0040 -/* - * Flags used by ext4_discard_partial_page_buffers - */ -#define EXT4_DISCARD_PARTIAL_PG_ZERO_UNMAPPED 0x0001 +/* Encryption algorithms */ +#define EXT4_ENCRYPTION_MODE_INVALID 0 +#define EXT4_ENCRYPTION_MODE_AES_256_XTS 1 +#define EXT4_ENCRYPTION_MODE_AES_256_GCM 2 +#define EXT4_ENCRYPTION_MODE_AES_256_CBC 3 +#define EXT4_ENCRYPTION_MODE_AES_256_CTS 4 + +#include "ext4_crypto.h" /* * ioctl commands @@ -618,6 +612,10 @@ #define EXT4_IOC_MOVE_EXT _IOWR('f', 15, struct move_extent) #define EXT4_IOC_RESIZE_FS _IOW('f', 16, __u64) #define EXT4_IOC_SWAP_BOOT _IO('f', 17) +#define EXT4_IOC_PRECACHE_EXTENTS _IO('f', 18) +#define EXT4_IOC_SET_ENCRYPTION_POLICY _IOR('f', 19, struct ext4_encryption_policy) +#define EXT4_IOC_GET_ENCRYPTION_PWSALT _IOW('f', 20, __u8[16]) +#define EXT4_IOC_GET_ENCRYPTION_POLICY _IOW('f', 21, struct ext4_encryption_policy) #if defined(__KERNEL__) && defined(CONFIG_COMPAT) /* @@ -699,6 +697,7 @@ __le32 i_crtime; /* File Creation time */ __le32 i_crtime_extra; /* extra FileCreationtime (nsec << 2 | epoch) */ __le32 i_version_hi; /* high 32 bits for 64-bit version */ + __le32 i_projid; /* Project ID */ }; struct move_extent { @@ -935,9 +934,20 @@ * by other means, so we have i_data_sem. */ struct rw_semaphore i_data_sem; + /* + * i_mmap_sem is for serializing page faults with truncate / punch hole + * operations. We have to make sure that new page cannot be faulted in + * a section of the inode that is being punched. We cannot easily use + * i_data_sem for this since we need protection for the whole punch + * operation and i_data_sem ranks below transaction start so we have + * to occasionally drop it. + */ + struct rw_semaphore i_mmap_sem; struct inode vfs_inode; struct jbd2_inode *jinode; + spinlock_t i_raw_lock; /* protects updates to the raw inode */ + /* * File creation time. Its function is same as that of * struct timespec i_{a,c,m}time in the generic inode. @@ -951,8 +961,12 @@ /* extents status tree */ struct ext4_es_tree i_es_tree; rwlock_t i_es_lock; - struct list_head i_es_lru; - unsigned int i_es_lru_nr; /* protected by i_es_lock */ + struct list_head i_es_list; + unsigned int i_es_all_nr; /* protected by i_es_lock */ + unsigned int i_es_shk_nr; /* protected by i_es_lock */ + ext4_lblk_t i_es_shrink_lblk; /* Offset where we start searching for + extents to shrink. Protected by + i_es_lock */ /* ialloc */ ext4_group_t i_last_alloc_group; @@ -977,12 +991,20 @@ qsize_t i_reserved_quota; #endif - /* completed IOs that might need unwritten extents handling */ - struct list_head i_completed_io_list; + /* Lock protecting lists below */ spinlock_t i_completed_io_lock; + /* + * Completed IOs that need unwritten extents handling and have + * transaction reserved + */ + struct list_head i_rsv_conversion_list; + /* + * Completed IOs that need unwritten extents handling and don't have + * transaction reserved + */ atomic_t i_ioend_count; /* Number of outstanding io_end structs */ atomic_t i_unwritten; /* Nr. of inflight conversions pending */ - struct work_struct i_unwritten_work; /* deferred extent conversion */ + struct work_struct i_rsv_conversion_work; spinlock_t i_block_reservation_lock; @@ -993,8 +1015,17 @@ tid_t i_sync_tid; tid_t i_datasync_tid; +#ifdef CONFIG_QUOTA + struct dquot *i_dquot[MAXQUOTAS]; +#endif + /* Precomputed uuid+inum+igen checksum for seeding inode checksums */ __u32 i_csum_seed; + +#ifdef CONFIG_EXT4_FS_ENCRYPTION + /* Encryption params */ + struct ext4_crypt_info *i_crypt_info; +#endif }; /* @@ -1022,6 +1053,11 @@ #define EXT4_MOUNT_ERRORS_MASK 0x00070 #define EXT4_MOUNT_MINIX_DF 0x00080 /* Mimics the Minix statfs */ #define EXT4_MOUNT_NOLOAD 0x00100 /* Don't use existing journal*/ +#ifdef CONFIG_FS_DAX +#define EXT4_MOUNT_DAX 0x00200 /* Direct Access */ +#else +#define EXT4_MOUNT_DAX 0 +#endif #define EXT4_MOUNT_DATA_FLAGS 0x00C00 /* Mode for data writes: */ #define EXT4_MOUNT_JOURNAL_DATA 0x00400 /* Write data to journal */ #define EXT4_MOUNT_ORDERED_DATA 0x00800 /* Flush data before commit */ @@ -1054,6 +1090,11 @@ #define EXT4_MOUNT2_STD_GROUP_SIZE 0x00000002 /* We have standard group size of blocksize * 8 blocks */ +#define EXT4_MOUNT2_HURD_COMPAT 0x00000004 /* Support HURD-castrated + file systems */ + +#define EXT4_MOUNT2_EXPLICIT_JOURNAL_CHECKSUM 0x00000008 /* User explicitly + specified journal checksum */ #define clear_opt(sb, opt) EXT4_SB(sb)->s_mount_opt &= \ ~EXT4_MOUNT_##opt @@ -1185,7 +1226,8 @@ __le32 s_raid_stripe_width; /* blocks on all data disks (N*stride)*/ __u8 s_log_groups_per_flex; /* FLEX_BG group size */ __u8 s_checksum_type; /* metadata checksum algorithm used */ - __le16 s_reserved_pad; + __u8 s_encryption_level; /* versioning level for encryption */ + __u8 s_reserved_pad; /* Padding to next 32bits */ __le64 s_kbytes_written; /* nr of lifetime kilobytes written */ __le32 s_snapshot_inum; /* Inode number of active snapshot */ __le32 s_snapshot_id; /* sequential ID of active snapshot */ @@ -1210,7 +1252,13 @@ __le32 s_usr_quota_inum; /* inode for tracking user quota */ __le32 s_grp_quota_inum; /* inode for tracking group quota */ __le32 s_overhead_clusters; /* overhead blocks/clusters in fs */ - __le32 s_reserved[108]; /* Padding to the end of the block */ + __le32 s_backup_bgs[2]; /* groups with sparse_super2 SBs */ + __u8 s_encrypt_algos[4]; /* Encryption algorithms in use */ + __u8 s_encrypt_pw_salt[16]; /* Salt used for string2key algorithm */ + __le32 s_lpf_ino; /* Location of the lost+found inode */ + __le32 s_prj_quota_inum; /* inode for tracking project quota */ + __le32 s_checksum_seed; /* crc32c(uuid) if csum_seed set */ + __le32 s_reserved[98]; /* Padding to the end of the block */ __le32 s_checksum; /* crc32c(superblock) */ }; @@ -1221,8 +1269,19 @@ /* * run-time mount flags */ -#define EXT4_MF_MNTDIR_SAMPLED 0x0001 -#define EXT4_MF_FS_ABORTED 0x0002 /* Fatal error detected */ +#define EXT4_MF_MNTDIR_SAMPLED 0x0001 +#define EXT4_MF_FS_ABORTED 0x0002 /* Fatal error detected */ +#define EXT4_MF_TEST_DUMMY_ENCRYPTION 0x0004 + +#ifdef CONFIG_EXT4_FS_ENCRYPTION +#define DUMMY_ENCRYPTION_ENABLED(sbi) (unlikely((sbi)->s_mount_flags & \ + EXT4_MF_TEST_DUMMY_ENCRYPTION)) +#else +#define DUMMY_ENCRYPTION_ENABLED(sbi) (0) +#endif + +/* Number of quota types we support */ +#define EXT4_MAXQUOTAS 2 /* * fourth extended-fs super-block data in memory @@ -1287,7 +1346,7 @@ u32 s_min_batch_time; struct block_device *journal_bdev; #ifdef CONFIG_QUOTA - char *s_qf_names[MAXQUOTAS]; /* Names of quota files with journalled quota */ + char *s_qf_names[EXT4_MAXQUOTAS]; /* Names of quota files with journalled quota */ int s_jquota_fmt; /* Format of quota to use */ #endif unsigned int s_want_extra_isize; /* New inodes should reserve # bytes */ @@ -1319,7 +1378,6 @@ unsigned int s_mb_stats; unsigned int s_mb_order2_reqs; unsigned int s_mb_group_prealloc; - unsigned int s_max_writeback_mb_bump; unsigned int s_max_dir_size_kb; /* where last allocation was done - for stream allocation */ unsigned long s_mb_last_group; @@ -1355,8 +1413,8 @@ struct flex_groups *s_flex_groups; ext4_group_t s_flex_groups_allocated; - /* workqueue for dio unwritten */ - struct workqueue_struct *dio_unwritten_wq; + /* workqueue for reserved extent conversions (buffered io) */ + struct workqueue_struct *rsv_conversion_wq; /* timer for periodic error stats printing */ struct timer_list s_err_report; @@ -1380,9 +1438,16 @@ /* Reclaim extents from extent status tree */ struct shrinker s_es_shrinker; - struct list_head s_es_lru; - struct percpu_counter s_extent_cache_cnt; - spinlock_t s_es_lru_lock ____cacheline_aligned_in_smp; + struct list_head s_es_list; /* List of inodes with reclaimable extents */ + long s_es_nr_inode; + struct ext4_es_stats s_es_stats; + struct mb_cache *s_mb_cache; + spinlock_t s_es_lock ____cacheline_aligned_in_smp; + + /* Ratelimit ext4 messages. */ + struct ratelimit_state s_err_ratelimit_state; + struct ratelimit_state s_warning_ratelimit_state; + struct ratelimit_state s_msg_ratelimit_state; }; static inline struct ext4_sb_info *EXT4_SB(struct super_block *sb) @@ -1403,11 +1468,6 @@ static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino) { return ino == EXT4_ROOT_INO || - ino == EXT4_USR_QUOTA_INO || - ino == EXT4_GRP_QUOTA_INO || - ino == EXT4_BOOT_LOADER_INO || - ino == EXT4_JOURNAL_INO || - ino == EXT4_RESIZE_INO || (ino >= EXT4_FIRST_INO(sb) && ino <= le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count)); } @@ -1443,11 +1503,11 @@ EXT4_STATE_EXT_MIGRATE, /* Inode is migrating */ EXT4_STATE_DIO_UNWRITTEN, /* need convert on dio done*/ EXT4_STATE_NEWENTRY, /* File just added to dir */ - EXT4_STATE_DELALLOC_RESERVED, /* blks already reserved for delalloc */ EXT4_STATE_DIOREAD_LOCK, /* Disable support for dio read nolocking */ EXT4_STATE_MAY_INLINE_DATA, /* may have in-inode data */ EXT4_STATE_ORDERED_MODE, /* data=ordered mode */ + EXT4_STATE_EXT_PRECACHED, /* extents have been precached */ }; #define EXT4_INODE_BIT_FNS(name, field, offset) \ @@ -1464,7 +1524,18 @@ clear_bit(bit + (offset), &EXT4_I(inode)->i_##field); \ } +/* Add these declarations here only so that these functions can be + * found by name. Otherwise, they are very hard to locate. */ +static inline int ext4_test_inode_flag(struct inode *inode, int bit); +static inline void ext4_set_inode_flag(struct inode *inode, int bit); +static inline void ext4_clear_inode_flag(struct inode *inode, int bit); EXT4_INODE_BIT_FNS(flag, flags, 0) + +/* Add these declarations here only so that these functions can be + * found by name. Otherwise, they are very hard to locate. */ +static inline int ext4_test_inode_state(struct inode *inode, int bit); +static inline void ext4_set_inode_state(struct inode *inode, int bit); +static inline void ext4_clear_inode_state(struct inode *inode, int bit); #if (BITS_PER_LONG < 64) EXT4_INODE_BIT_FNS(state, state_flags, 0) @@ -1487,6 +1558,18 @@ #define EXT4_SB(sb) (sb) #endif +/* + * Returns true if the inode is inode is encrypted + */ +static inline int ext4_encrypted_inode(struct inode *inode) +{ +#ifdef CONFIG_EXT4_FS_ENCRYPTION + return ext4_test_inode_flag(inode, EXT4_INODE_ENCRYPT); +#else + return 0; +#endif +} + #define NEXT_ORPHAN(inode) EXT4_I(inode)->i_dtime /* @@ -1513,6 +1596,7 @@ * Feature set definitions */ +/* Use the ext4_{has,set,clear}_feature_* helpers; these will be removed */ #define EXT4_HAS_COMPAT_FEATURE(sb,mask) \ ((EXT4_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask)) != 0) #define EXT4_HAS_RO_COMPAT_FEATURE(sb,mask) \ @@ -1538,6 +1622,7 @@ #define EXT4_FEATURE_COMPAT_EXT_ATTR 0x0008 #define EXT4_FEATURE_COMPAT_RESIZE_INODE 0x0010 #define EXT4_FEATURE_COMPAT_DIR_INDEX 0x0020 +#define EXT4_FEATURE_COMPAT_SPARSE_SUPER2 0x0200 #define EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 #define EXT4_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 @@ -1555,6 +1640,8 @@ * GDT_CSUM bits are mutually exclusive. */ #define EXT4_FEATURE_RO_COMPAT_METADATA_CSUM 0x0400 +#define EXT4_FEATURE_RO_COMPAT_READONLY 0x1000 +#define EXT4_FEATURE_RO_COMPAT_PROJECT 0x2000 #define EXT4_FEATURE_INCOMPAT_COMPRESSION 0x0001 #define EXT4_FEATURE_INCOMPAT_FILETYPE 0x0002 @@ -1567,9 +1654,98 @@ #define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200 #define EXT4_FEATURE_INCOMPAT_EA_INODE 0x0400 /* EA in inode */ #define EXT4_FEATURE_INCOMPAT_DIRDATA 0x1000 /* data in dirent */ -#define EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM 0x2000 /* use crc32c for bg */ +#define EXT4_FEATURE_INCOMPAT_CSUM_SEED 0x2000 #define EXT4_FEATURE_INCOMPAT_LARGEDIR 0x4000 /* >2GB or 3-lvl htree */ #define EXT4_FEATURE_INCOMPAT_INLINE_DATA 0x8000 /* data in inode */ +#define EXT4_FEATURE_INCOMPAT_ENCRYPT 0x10000 + +#define EXT4_FEATURE_COMPAT_FUNCS(name, flagname) \ +static inline bool ext4_has_feature_##name(struct super_block *sb) \ +{ \ + return ((EXT4_SB(sb)->s_es->s_feature_compat & \ + cpu_to_le32(EXT4_FEATURE_COMPAT_##flagname)) != 0); \ +} \ +static inline void ext4_set_feature_##name(struct super_block *sb) \ +{ \ + EXT4_SB(sb)->s_es->s_feature_compat |= \ + cpu_to_le32(EXT4_FEATURE_COMPAT_##flagname); \ +} \ +static inline void ext4_clear_feature_##name(struct super_block *sb) \ +{ \ + EXT4_SB(sb)->s_es->s_feature_compat &= \ + ~cpu_to_le32(EXT4_FEATURE_COMPAT_##flagname); \ +} + +#define EXT4_FEATURE_RO_COMPAT_FUNCS(name, flagname) \ +static inline bool ext4_has_feature_##name(struct super_block *sb) \ +{ \ + return ((EXT4_SB(sb)->s_es->s_feature_ro_compat & \ + cpu_to_le32(EXT4_FEATURE_RO_COMPAT_##flagname)) != 0); \ +} \ +static inline void ext4_set_feature_##name(struct super_block *sb) \ +{ \ + EXT4_SB(sb)->s_es->s_feature_ro_compat |= \ + cpu_to_le32(EXT4_FEATURE_RO_COMPAT_##flagname); \ +} \ +static inline void ext4_clear_feature_##name(struct super_block *sb) \ +{ \ + EXT4_SB(sb)->s_es->s_feature_ro_compat &= \ + ~cpu_to_le32(EXT4_FEATURE_RO_COMPAT_##flagname); \ +} + +#define EXT4_FEATURE_INCOMPAT_FUNCS(name, flagname) \ +static inline bool ext4_has_feature_##name(struct super_block *sb) \ +{ \ + return ((EXT4_SB(sb)->s_es->s_feature_incompat & \ + cpu_to_le32(EXT4_FEATURE_INCOMPAT_##flagname)) != 0); \ +} \ +static inline void ext4_set_feature_##name(struct super_block *sb) \ +{ \ + EXT4_SB(sb)->s_es->s_feature_incompat |= \ + cpu_to_le32(EXT4_FEATURE_INCOMPAT_##flagname); \ +} \ +static inline void ext4_clear_feature_##name(struct super_block *sb) \ +{ \ + EXT4_SB(sb)->s_es->s_feature_incompat &= \ + ~cpu_to_le32(EXT4_FEATURE_INCOMPAT_##flagname); \ +} + +EXT4_FEATURE_COMPAT_FUNCS(dir_prealloc, DIR_PREALLOC) +EXT4_FEATURE_COMPAT_FUNCS(imagic_inodes, IMAGIC_INODES) +EXT4_FEATURE_COMPAT_FUNCS(journal, HAS_JOURNAL) +EXT4_FEATURE_COMPAT_FUNCS(xattr, EXT_ATTR) +EXT4_FEATURE_COMPAT_FUNCS(resize_inode, RESIZE_INODE) +EXT4_FEATURE_COMPAT_FUNCS(dir_index, DIR_INDEX) +EXT4_FEATURE_COMPAT_FUNCS(sparse_super2, SPARSE_SUPER2) + +EXT4_FEATURE_RO_COMPAT_FUNCS(sparse_super, SPARSE_SUPER) +EXT4_FEATURE_RO_COMPAT_FUNCS(large_file, LARGE_FILE) +EXT4_FEATURE_RO_COMPAT_FUNCS(btree_dir, BTREE_DIR) +EXT4_FEATURE_RO_COMPAT_FUNCS(huge_file, HUGE_FILE) +EXT4_FEATURE_RO_COMPAT_FUNCS(gdt_csum, GDT_CSUM) +EXT4_FEATURE_RO_COMPAT_FUNCS(dir_nlink, DIR_NLINK) +EXT4_FEATURE_RO_COMPAT_FUNCS(extra_isize, EXTRA_ISIZE) +EXT4_FEATURE_RO_COMPAT_FUNCS(quota, QUOTA) +EXT4_FEATURE_RO_COMPAT_FUNCS(bigalloc, BIGALLOC) +EXT4_FEATURE_RO_COMPAT_FUNCS(metadata_csum, METADATA_CSUM) +EXT4_FEATURE_RO_COMPAT_FUNCS(readonly, READONLY) +EXT4_FEATURE_RO_COMPAT_FUNCS(project, PROJECT) + +EXT4_FEATURE_INCOMPAT_FUNCS(compression, COMPRESSION) +EXT4_FEATURE_INCOMPAT_FUNCS(filetype, FILETYPE) +EXT4_FEATURE_INCOMPAT_FUNCS(journal_needs_recovery, RECOVER) +EXT4_FEATURE_INCOMPAT_FUNCS(journal_dev, JOURNAL_DEV) +EXT4_FEATURE_INCOMPAT_FUNCS(meta_bg, META_BG) +EXT4_FEATURE_INCOMPAT_FUNCS(extents, EXTENTS) +EXT4_FEATURE_INCOMPAT_FUNCS(64bit, 64BIT) +EXT4_FEATURE_INCOMPAT_FUNCS(mmp, MMP) +EXT4_FEATURE_INCOMPAT_FUNCS(flex_bg, FLEX_BG) +EXT4_FEATURE_INCOMPAT_FUNCS(ea_inode, EA_INODE) +EXT4_FEATURE_INCOMPAT_FUNCS(dirdata, DIRDATA) +EXT4_FEATURE_INCOMPAT_FUNCS(csum_seed, CSUM_SEED) +EXT4_FEATURE_INCOMPAT_FUNCS(largedir, LARGEDIR) +EXT4_FEATURE_INCOMPAT_FUNCS(inline_data, INLINE_DATA) +EXT4_FEATURE_INCOMPAT_FUNCS(encrypt, ENCRYPT) #define EXT2_FEATURE_COMPAT_SUPP EXT4_FEATURE_COMPAT_EXT_ATTR #define EXT2_FEATURE_INCOMPAT_SUPP (EXT4_FEATURE_INCOMPAT_FILETYPE| \ @@ -1586,15 +1762,17 @@ EXT4_FEATURE_RO_COMPAT_LARGE_FILE| \ EXT4_FEATURE_RO_COMPAT_BTREE_DIR) -#define EXT4_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR +#define EXT4_FEATURE_COMPAT_SUPP EXT4_FEATURE_COMPAT_EXT_ATTR #define EXT4_FEATURE_INCOMPAT_SUPP (EXT4_FEATURE_INCOMPAT_FILETYPE| \ EXT4_FEATURE_INCOMPAT_RECOVER| \ EXT4_FEATURE_INCOMPAT_META_BG| \ EXT4_FEATURE_INCOMPAT_EXTENTS| \ EXT4_FEATURE_INCOMPAT_64BIT| \ EXT4_FEATURE_INCOMPAT_FLEX_BG| \ - EXT4_FEATURE_INCOMPAT_MMP | \ - EXT4_FEATURE_INCOMPAT_INLINE_DATA) + EXT4_FEATURE_INCOMPAT_MMP | \ + EXT4_FEATURE_INCOMPAT_INLINE_DATA | \ + EXT4_FEATURE_INCOMPAT_ENCRYPT | \ + EXT4_FEATURE_INCOMPAT_CSUM_SEED) #define EXT4_FEATURE_RO_COMPAT_SUPP (EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER| \ EXT4_FEATURE_RO_COMPAT_LARGE_FILE| \ EXT4_FEATURE_RO_COMPAT_GDT_CSUM| \ @@ -1606,6 +1784,40 @@ EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\ EXT4_FEATURE_RO_COMPAT_QUOTA) +#define EXTN_FEATURE_FUNCS(ver) \ +static inline bool ext4_has_unknown_ext##ver##_compat_features(struct super_block *sb) \ +{ \ + return ((EXT4_SB(sb)->s_es->s_feature_compat & \ + cpu_to_le32(~EXT##ver##_FEATURE_COMPAT_SUPP)) != 0); \ +} \ +static inline bool ext4_has_unknown_ext##ver##_ro_compat_features(struct super_block *sb) \ +{ \ + return ((EXT4_SB(sb)->s_es->s_feature_ro_compat & \ + cpu_to_le32(~EXT##ver##_FEATURE_RO_COMPAT_SUPP)) != 0); \ +} \ +static inline bool ext4_has_unknown_ext##ver##_incompat_features(struct super_block *sb) \ +{ \ + return ((EXT4_SB(sb)->s_es->s_feature_incompat & \ + cpu_to_le32(~EXT##ver##_FEATURE_INCOMPAT_SUPP)) != 0); \ +} + +EXTN_FEATURE_FUNCS(2) +EXTN_FEATURE_FUNCS(3) +EXTN_FEATURE_FUNCS(4) + +static inline bool ext4_has_compat_features(struct super_block *sb) +{ + return (EXT4_SB(sb)->s_es->s_feature_compat != 0); +} +static inline bool ext4_has_ro_compat_features(struct super_block *sb) +{ + return (EXT4_SB(sb)->s_es->s_feature_ro_compat != 0); +} +static inline bool ext4_has_incompat_features(struct super_block *sb) +{ + return (EXT4_SB(sb)->s_es->s_feature_incompat != 0); +} + /* * Default values for user and/or group using reserved blocks */ @@ -1756,8 +1968,7 @@ * (c) Daniel Phillips, 2001 */ -#define is_dx(dir) (EXT4_HAS_COMPAT_FEATURE(dir->i_sb, \ - EXT4_FEATURE_COMPAT_DIR_INDEX) && \ +#define is_dx(dir) (ext4_has_feature_dir_index((dir)->i_sb) && \ ext4_test_inode_flag((dir), EXT4_INODE_INDEX)) #define EXT4_DIR_LINK_MAX(dir) (!is_dx(dir) && (dir)->i_nlink >= EXT4_LINK_MAX) #define EXT4_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2 || (dir)->i_nlink == 1) @@ -1814,6 +2025,17 @@ */ #define HASH_NB_ALWAYS 1 +struct ext4_filename { + const struct qstr *usr_fname; + struct ext4_str disk_name; + struct dx_hash_info hinfo; +#ifdef CONFIG_EXT4_FS_ENCRYPTION + struct ext4_str crypto_buf; +#endif +}; + +#define fname_name(p) ((p)->disk_name.name) +#define fname_len(p) ((p)->disk_name.len) /* * Describe an inode's exact location on disk and in memory @@ -1856,7 +2078,7 @@ /* * Special error return code only used by dx_probe() and its callers. */ -#define ERR_BAD_DX_DIR -75000 +#define ERR_BAD_DX_DIR (-(MAX_ERRNO - 1)) /* * Timeout and state flag for lazy initialization inode thread. @@ -1986,10 +2208,6 @@ extern ext4_group_t ext4_get_group_number(struct super_block *sb, ext4_fsblk_t block); -extern void ext4_validate_block_bitmap(struct super_block *sb, - struct ext4_group_desc *desc, - unsigned int block_group, - struct buffer_head *bh); extern unsigned int ext4_block_group(struct super_block *sb, ext4_fsblk_t blocknr); extern ext4_grpblk_t ext4_block_group_offset(struct super_block *sb, @@ -2018,18 +2236,122 @@ struct buffer_head *bh); extern struct buffer_head *ext4_read_block_bitmap(struct super_block *sb, ext4_group_t block_group); -extern void ext4_init_block_bitmap(struct super_block *sb, - struct buffer_head *bh, - ext4_group_t group, - struct ext4_group_desc *desc); extern unsigned ext4_free_clusters_after_init(struct super_block *sb, ext4_group_t block_group, struct ext4_group_desc *gdp); -extern unsigned ext4_num_overhead_clusters(struct super_block *sb, - ext4_group_t block_group, - struct ext4_group_desc *gdp); ext4_fsblk_t ext4_inode_to_goal_block(struct inode *); +/* crypto_policy.c */ +int ext4_is_child_context_consistent_with_parent(struct inode *parent, + struct inode *child); +int ext4_inherit_context(struct inode *parent, struct inode *child); +void ext4_to_hex(char *dst, char *src, size_t src_size); +int ext4_process_policy(const struct ext4_encryption_policy *policy, + struct inode *inode); +int ext4_get_policy(struct inode *inode, + struct ext4_encryption_policy *policy); + +/* crypto.c */ +extern struct kmem_cache *ext4_crypt_info_cachep; +bool ext4_valid_contents_enc_mode(uint32_t mode); +uint32_t ext4_validate_encryption_key_size(uint32_t mode, uint32_t size); +extern struct workqueue_struct *ext4_read_workqueue; +struct ext4_crypto_ctx *ext4_get_crypto_ctx(struct inode *inode); +void ext4_release_crypto_ctx(struct ext4_crypto_ctx *ctx); +void ext4_restore_control_page(struct page *data_page); +struct page *ext4_encrypt(struct inode *inode, + struct page *plaintext_page); +int ext4_decrypt(struct page *page); +int ext4_encrypted_zeroout(struct inode *inode, struct ext4_extent *ex); + +#ifdef CONFIG_EXT4_FS_ENCRYPTION +int ext4_init_crypto(void); +void ext4_exit_crypto(void); +static inline int ext4_sb_has_crypto(struct super_block *sb) +{ + return ext4_has_feature_encrypt(sb); +} +#else +static inline int ext4_init_crypto(void) { return 0; } +static inline void ext4_exit_crypto(void) { } +static inline int ext4_sb_has_crypto(struct super_block *sb) +{ + return 0; +} +#endif + +/* crypto_fname.c */ +bool ext4_valid_filenames_enc_mode(uint32_t mode); +u32 ext4_fname_crypto_round_up(u32 size, u32 blksize); +unsigned ext4_fname_encrypted_size(struct inode *inode, u32 ilen); +int ext4_fname_crypto_alloc_buffer(struct inode *inode, + u32 ilen, struct ext4_str *crypto_str); +int _ext4_fname_disk_to_usr(struct inode *inode, + struct dx_hash_info *hinfo, + const struct ext4_str *iname, + struct ext4_str *oname); +int ext4_fname_disk_to_usr(struct inode *inode, + struct dx_hash_info *hinfo, + const struct ext4_dir_entry_2 *de, + struct ext4_str *oname); +int ext4_fname_usr_to_disk(struct inode *inode, + const struct qstr *iname, + struct ext4_str *oname); +#ifdef CONFIG_EXT4_FS_ENCRYPTION +void ext4_fname_crypto_free_buffer(struct ext4_str *crypto_str); +int ext4_fname_setup_filename(struct inode *dir, const struct qstr *iname, + int lookup, struct ext4_filename *fname); +void ext4_fname_free_filename(struct ext4_filename *fname); +#else +static inline +int ext4_setup_fname_crypto(struct inode *inode) +{ + return 0; +} +static inline void ext4_fname_crypto_free_buffer(struct ext4_str *p) { } +static inline int ext4_fname_setup_filename(struct inode *dir, + const struct qstr *iname, + int lookup, struct ext4_filename *fname) +{ + fname->usr_fname = iname; + fname->disk_name.name = (unsigned char *) iname->name; + fname->disk_name.len = iname->len; + return 0; +} +static inline void ext4_fname_free_filename(struct ext4_filename *fname) { } +#endif + + +/* crypto_key.c */ +void ext4_free_crypt_info(struct ext4_crypt_info *ci); +void ext4_free_encryption_info(struct inode *inode, struct ext4_crypt_info *ci); + +#ifdef CONFIG_EXT4_FS_ENCRYPTION +int ext4_has_encryption_key(struct inode *inode); + +int ext4_get_encryption_info(struct inode *inode); + +static inline struct ext4_crypt_info *ext4_encryption_info(struct inode *inode) +{ + return EXT4_I(inode)->i_crypt_info; +} + +#else +static inline int ext4_has_encryption_key(struct inode *inode) +{ + return 0; +} +static inline int ext4_get_encryption_info(struct inode *inode) +{ + return 0; +} +static inline struct ext4_crypt_info *ext4_encryption_info(struct inode *inode) +{ + return NULL; +} +#endif + + /* dir.c */ extern int __ext4_check_dir_entry(const char *, unsigned int, struct inode *, struct file *, @@ -2040,22 +2362,23 @@ unlikely(__ext4_check_dir_entry(__func__, __LINE__, (dir), (filp), \ (de), (bh), (buf), (size), (offset))) extern int ext4_htree_store_dirent(struct file *dir_file, __u32 hash, - __u32 minor_hash, - struct ext4_dir_entry_2 *dirent); + __u32 minor_hash, + struct ext4_dir_entry_2 *dirent, + struct ext4_str *ent_name); extern void ext4_htree_free_dir_info(struct dir_private_info *p); extern int ext4_find_dest_de(struct inode *dir, struct inode *inode, struct buffer_head *bh, void *buf, int buf_size, - const char *name, int namelen, + struct ext4_filename *fname, struct ext4_dir_entry_2 **dest_de); -void ext4_insert_dentry(struct inode *inode, - struct ext4_dir_entry_2 *de, - int buf_size, - const char *name, int namelen); +int ext4_insert_dentry(struct inode *dir, + struct inode *inode, + struct ext4_dir_entry_2 *de, + int buf_size, + struct ext4_filename *fname); static inline void ext4_update_dx_flag(struct inode *inode) { - if (!EXT4_HAS_COMPAT_FEATURE(inode->i_sb, - EXT4_FEATURE_COMPAT_DIR_INDEX)) + if (!ext4_has_feature_dir_index(inode->i_sb)) ext4_clear_inode_flag(inode, EXT4_INODE_INDEX); } static unsigned char ext4_filetype_table[] = { @@ -2064,16 +2387,16 @@ static inline unsigned char get_dtype(struct super_block *sb, int filetype) { - if (!EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FILETYPE) || - (filetype >= EXT4_FT_MAX)) + if (!ext4_has_feature_filetype(sb) || filetype >= EXT4_FT_MAX) return DT_UNKNOWN; return ext4_filetype_table[filetype]; } +extern int ext4_check_all_de(struct inode *dir, struct buffer_head *bh, + void *buf, int buf_size); /* fsync.c */ extern int ext4_sync_file(struct file *, loff_t, loff_t, int); -extern int ext4_flush_unwritten_io(struct inode *); /* hash.c */ extern int ext4fs_dirhash(const char *name, int len, struct @@ -2105,6 +2428,7 @@ extern void ext4_end_bitmap_read(struct buffer_head *bh, int uptodate); /* mballoc.c */ +extern const struct file_operations ext4_seq_mb_groups_fops; extern long ext4_mb_stats; extern long ext4_mb_max_to_scan; extern int ext4_mb_init(struct super_block *); @@ -2127,12 +2451,13 @@ extern int ext4_trim_fs(struct super_block *, struct fstrim_range *); /* inode.c */ -struct buffer_head *ext4_getblk(handle_t *, struct inode *, - ext4_lblk_t, int, int *); -struct buffer_head *ext4_bread(handle_t *, struct inode *, - ext4_lblk_t, int, int *); +int ext4_inode_is_fast_symlink(struct inode *inode); +struct buffer_head *ext4_getblk(handle_t *, struct inode *, ext4_lblk_t, int); +struct buffer_head *ext4_bread(handle_t *, struct inode *, ext4_lblk_t, int); int ext4_get_block_write(struct inode *inode, sector_t iblock, struct buffer_head *bh_result, int create); +int ext4_get_block_dax(struct inode *inode, sector_t iblock, + struct buffer_head *bh_result, int create); int ext4_get_block(struct inode *inode, sector_t iblock, struct buffer_head *bh_result, int create); int ext4_da_get_block_prep(struct inode *inode, sector_t iblock, @@ -2161,9 +2486,10 @@ extern void ext4_dirty_inode(struct inode *, int); extern int ext4_change_inode_journal_flag(struct inode *, int); extern int ext4_get_inode_loc(struct inode *, struct ext4_iloc *); +extern int ext4_inode_attach_jinode(struct inode *inode); extern int ext4_can_truncate(struct inode *inode); extern void ext4_truncate(struct inode *); -extern int ext4_punch_hole(struct file *file, loff_t offset, loff_t length); +extern int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length); extern int ext4_truncate_restart_trans(handle_t *, struct inode *, int nblocks); extern void ext4_set_inode_flags(struct inode *); extern void ext4_get_inode_flags(struct ext4_inode_info *); @@ -2171,10 +2497,10 @@ extern void ext4_set_aops(struct inode *inode); extern int ext4_writepage_trans_blocks(struct inode *); extern int ext4_chunk_trans_blocks(struct inode *, int nrblocks); -extern int ext4_discard_partial_page_buffers(handle_t *handle, - struct address_space *mapping, loff_t from, - loff_t length, int flags); +extern int ext4_zero_partial_blocks(handle_t *handle, struct inode *inode, + loff_t lstart, loff_t lend); extern int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); +extern int ext4_filemap_fault(struct vm_area_struct *vma, struct vm_fault *vmf); extern qsize_t *ext4_get_reserved_space(struct inode *inode); extern void ext4_da_update_reserve_space(struct inode *inode, int used, int quota_claim); @@ -2182,14 +2508,13 @@ /* indirect.c */ extern int ext4_ind_map_blocks(handle_t *handle, struct inode *inode, struct ext4_map_blocks *map, int flags); -extern ssize_t ext4_ind_direct_IO(int rw, struct kiocb *iocb, - const struct iovec *iov, loff_t offset, - unsigned long nr_segs); +extern ssize_t ext4_ind_direct_IO(struct kiocb *iocb, struct iov_iter *iter, + loff_t offset); extern int ext4_ind_calc_metadata_amount(struct inode *inode, sector_t lblock); -extern int ext4_ind_trans_blocks(struct inode *inode, int nrblocks, int chunk); +extern int ext4_ind_trans_blocks(struct inode *inode, int nrblocks); extern void ext4_ind_truncate(handle_t *, struct inode *inode); -extern int ext4_free_hole_blocks(handle_t *handle, struct inode *inode, - ext4_lblk_t first, ext4_lblk_t stop); +extern int ext4_ind_remove_space(handle_t *handle, struct inode *inode, + ext4_lblk_t start, ext4_lblk_t end); /* ioctl.c */ extern long ext4_ioctl(struct file *, unsigned int, unsigned long); @@ -2206,13 +2531,14 @@ extern int ext4_orphan_del(handle_t *, struct inode *); extern int ext4_htree_fill_tree(struct file *dir_file, __u32 start_hash, __u32 start_minor_hash, __u32 *next_hash); -extern int search_dir(struct buffer_head *bh, - char *search_buf, - int buf_size, - struct inode *dir, - const struct qstr *d_name, - unsigned int offset, - struct ext4_dir_entry_2 **res_dir); +extern int ext4_search_dir(struct buffer_head *bh, + char *search_buf, + int buf_size, + struct inode *dir, + struct ext4_filename *fname, + const struct qstr *d_name, + unsigned int offset, + struct ext4_dir_entry_2 **res_dir); extern int ext4_generic_delete_entry(handle_t *handle, struct inode *dir, struct ext4_dir_entry_2 *de_del, @@ -2220,6 +2546,7 @@ void *entry_buf, int buf_size, int csum_size); +extern int ext4_empty_dir(struct inode *inode); /* resize.c */ extern int ext4_group_add(struct super_block *sb, @@ -2230,53 +2557,124 @@ extern int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count); /* super.c */ +extern int ext4_seq_options_show(struct seq_file *seq, void *offset); extern int ext4_calculate_overhead(struct super_block *sb); -extern int ext4_superblock_csum_verify(struct super_block *sb, - struct ext4_super_block *es); extern void ext4_superblock_csum_set(struct super_block *sb); extern void *ext4_kvmalloc(size_t size, gfp_t flags); extern void *ext4_kvzalloc(size_t size, gfp_t flags); -extern void ext4_kvfree(void *ptr); extern int ext4_alloc_flex_bg_array(struct super_block *sb, ext4_group_t ngroup); extern const char *ext4_decode_error(struct super_block *sb, int errno, char nbuf[16]); + extern __printf(4, 5) void __ext4_error(struct super_block *, const char *, unsigned int, const char *, ...); -#define ext4_error(sb, message...) __ext4_error(sb, __func__, \ - __LINE__, ## message) extern __printf(5, 6) -void ext4_error_inode(struct inode *, const char *, unsigned int, ext4_fsblk_t, +void __ext4_error_inode(struct inode *, const char *, unsigned int, ext4_fsblk_t, const char *, ...); extern __printf(5, 6) -void ext4_error_file(struct file *, const char *, unsigned int, ext4_fsblk_t, +void __ext4_error_file(struct file *, const char *, unsigned int, ext4_fsblk_t, const char *, ...); extern void __ext4_std_error(struct super_block *, const char *, unsigned int, int); extern __printf(4, 5) void __ext4_abort(struct super_block *, const char *, unsigned int, const char *, ...); -#define ext4_abort(sb, message...) __ext4_abort(sb, __func__, \ - __LINE__, ## message) extern __printf(4, 5) void __ext4_warning(struct super_block *, const char *, unsigned int, const char *, ...); -#define ext4_warning(sb, message...) __ext4_warning(sb, __func__, \ - __LINE__, ## message) +extern __printf(4, 5) +void __ext4_warning_inode(const struct inode *inode, const char *function, + unsigned int line, const char *fmt, ...); extern __printf(3, 4) -void ext4_msg(struct super_block *, const char *, const char *, ...); +void __ext4_msg(struct super_block *, const char *, const char *, ...); extern void __dump_mmp_msg(struct super_block *, struct mmp_struct *mmp, const char *, unsigned int, const char *); -#define dump_mmp_msg(sb, mmp, msg) __dump_mmp_msg(sb, mmp, __func__, \ - __LINE__, msg) extern __printf(7, 8) void __ext4_grp_locked_error(const char *, unsigned int, struct super_block *, ext4_group_t, unsigned long, ext4_fsblk_t, const char *, ...); -#define ext4_grp_locked_error(sb, grp, message...) \ - __ext4_grp_locked_error(__func__, __LINE__, (sb), (grp), ## message) + +#define EXT4_ERROR_INODE(inode, fmt, a...) \ + ext4_error_inode((inode), __func__, __LINE__, 0, (fmt), ## a) + +#define EXT4_ERROR_INODE_BLOCK(inode, block, fmt, a...) \ + ext4_error_inode((inode), __func__, __LINE__, (block), (fmt), ## a) + +#define EXT4_ERROR_FILE(file, block, fmt, a...) \ + ext4_error_file((file), __func__, __LINE__, (block), (fmt), ## a) + +#ifdef CONFIG_PRINTK + +#define ext4_error_inode(inode, func, line, block, fmt, ...) \ + __ext4_error_inode(inode, func, line, block, fmt, ##__VA_ARGS__) +#define ext4_error_file(file, func, line, block, fmt, ...) \ + __ext4_error_file(file, func, line, block, fmt, ##__VA_ARGS__) +#define ext4_error(sb, fmt, ...) \ + __ext4_error(sb, __func__, __LINE__, fmt, ##__VA_ARGS__) +#define ext4_abort(sb, fmt, ...) \ + __ext4_abort(sb, __func__, __LINE__, fmt, ##__VA_ARGS__) +#define ext4_warning(sb, fmt, ...) \ + __ext4_warning(sb, __func__, __LINE__, fmt, ##__VA_ARGS__) +#define ext4_warning_inode(inode, fmt, ...) \ + __ext4_warning_inode(inode, __func__, __LINE__, fmt, ##__VA_ARGS__) +#define ext4_msg(sb, level, fmt, ...) \ + __ext4_msg(sb, level, fmt, ##__VA_ARGS__) +#define dump_mmp_msg(sb, mmp, msg) \ + __dump_mmp_msg(sb, mmp, __func__, __LINE__, msg) +#define ext4_grp_locked_error(sb, grp, ino, block, fmt, ...) \ + __ext4_grp_locked_error(__func__, __LINE__, sb, grp, ino, block, \ + fmt, ##__VA_ARGS__) + +#else + +#define ext4_error_inode(inode, func, line, block, fmt, ...) \ +do { \ + no_printk(fmt, ##__VA_ARGS__); \ + __ext4_error_inode(inode, "", 0, block, " "); \ +} while (0) +#define ext4_error_file(file, func, line, block, fmt, ...) \ +do { \ + no_printk(fmt, ##__VA_ARGS__); \ + __ext4_error_file(file, "", 0, block, " "); \ +} while (0) +#define ext4_error(sb, fmt, ...) \ +do { \ + no_printk(fmt, ##__VA_ARGS__); \ + __ext4_error(sb, "", 0, " "); \ +} while (0) +#define ext4_abort(sb, fmt, ...) \ +do { \ + no_printk(fmt, ##__VA_ARGS__); \ + __ext4_abort(sb, "", 0, " "); \ +} while (0) +#define ext4_warning(sb, fmt, ...) \ +do { \ + no_printk(fmt, ##__VA_ARGS__); \ + __ext4_warning(sb, "", 0, " "); \ +} while (0) +#define ext4_warning_inode(inode, fmt, ...) \ +do { \ + no_printk(fmt, ##__VA_ARGS__); \ + __ext4_warning_inode(inode, "", 0, " "); \ +} while (0) +#define ext4_msg(sb, level, fmt, ...) \ +do { \ + no_printk(fmt, ##__VA_ARGS__); \ + __ext4_msg(sb, "", " "); \ +} while (0) +#define dump_mmp_msg(sb, mmp, msg) \ + __dump_mmp_msg(sb, mmp, "", 0, "") +#define ext4_grp_locked_error(sb, grp, ino, block, fmt, ...) \ +do { \ + no_printk(fmt, ##__VA_ARGS__); \ + __ext4_grp_locked_error("", 0, sb, grp, ino, block, " "); \ +} while (0) + +#endif + extern void ext4_update_dynamic_rev(struct super_block *sb); extern int ext4_update_compat_feature(handle_t *handle, struct super_block *sb, __u32 compat); @@ -2322,11 +2720,17 @@ static inline int ext4_has_group_desc_csum(struct super_block *sb) { - return EXT4_HAS_RO_COMPAT_FEATURE(sb, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM) || - (EXT4_SB(sb)->s_chksum_driver != NULL); + return ext4_has_feature_gdt_csum(sb) || + EXT4_SB(sb)->s_chksum_driver != NULL; } +static inline int ext4_has_metadata_csum(struct super_block *sb) +{ + WARN_ON_ONCE(ext4_has_feature_metadata_csum(sb) && + !EXT4_SB(sb)->s_chksum_driver); + + return (EXT4_SB(sb)->s_chksum_driver != NULL); +} static inline ext4_fsblk_t ext4_blocks_count(struct ext4_super_block *es) { return ((ext4_fsblk_t)le32_to_cpu(es->s_blocks_count_hi) << 32) | @@ -2387,6 +2791,7 @@ { struct ext4_group_info ***grp_info; long indexv, indexh; + BUG_ON(group >= EXT4_SB(sb)->s_groups_count); grp_info = EXT4_SB(sb)->s_group_info; indexv = group >> (EXT4_DESC_PER_BLOCK_BITS(sb)); indexh = group & ((EXT4_DESC_PER_BLOCK(sb)) - 1); @@ -2433,18 +2838,36 @@ #define EXT4_FREECLUSTERS_WATERMARK 0 #endif +/* Update i_disksize. Requires i_mutex to avoid races with truncate */ static inline void ext4_update_i_disksize(struct inode *inode, loff_t newsize) { - /* - * XXX: replace with spinlock if seen contended -bzzz - */ + WARN_ON_ONCE(S_ISREG(inode->i_mode) && + !mutex_is_locked(&inode->i_mutex)); down_write(&EXT4_I(inode)->i_data_sem); if (newsize > EXT4_I(inode)->i_disksize) EXT4_I(inode)->i_disksize = newsize; up_write(&EXT4_I(inode)->i_data_sem); - return ; } +/* Update i_size, i_disksize. Requires i_mutex to avoid races with truncate */ +static inline int ext4_update_inode_size(struct inode *inode, loff_t newsize) +{ + int changed = 0; + + if (newsize > inode->i_size) { + i_size_write(inode, newsize); + changed = 1; + } + if (newsize > EXT4_I(inode)->i_disksize) { + ext4_update_i_disksize(inode, newsize); + changed |= 2; + } + return changed; +} + +int ext4_update_disksize_before_punch(struct inode *inode, loff_t offset, + loff_t len); + struct ext4_group_info { unsigned long bb_state; struct rb_root bb_free_root; @@ -2465,9 +2888,15 @@ #define EXT4_GROUP_INFO_NEED_INIT_BIT 0 #define EXT4_GROUP_INFO_WAS_TRIMMED_BIT 1 +#define EXT4_GROUP_INFO_BBITMAP_CORRUPT_BIT 2 +#define EXT4_GROUP_INFO_IBITMAP_CORRUPT_BIT 3 #define EXT4_MB_GRP_NEED_INIT(grp) \ (test_bit(EXT4_GROUP_INFO_NEED_INIT_BIT, &((grp)->bb_state))) +#define EXT4_MB_GRP_BBITMAP_CORRUPT(grp) \ + (test_bit(EXT4_GROUP_INFO_BBITMAP_CORRUPT_BIT, &((grp)->bb_state))) +#define EXT4_MB_GRP_IBITMAP_CORRUPT(grp) \ + (test_bit(EXT4_GROUP_INFO_IBITMAP_CORRUPT_BIT, &((grp)->bb_state))) #define EXT4_MB_GRP_WAS_TRIMMED(grp) \ (test_bit(EXT4_GROUP_INFO_WAS_TRIMMED_BIT, &((grp)->bb_state))) @@ -2544,19 +2973,10 @@ extern const struct inode_operations ext4_file_inode_operations; extern const struct file_operations ext4_file_operations; extern loff_t ext4_llseek(struct file *file, loff_t offset, int origin); -extern void ext4_unwritten_wait(struct inode *inode); /* inline.c */ -extern int ext4_has_inline_data(struct inode *inode); -extern int ext4_get_inline_size(struct inode *inode); extern int ext4_get_max_inline_size(struct inode *inode); extern int ext4_find_inline_data_nolock(struct inode *inode); -extern void ext4_write_inline_data(struct inode *inode, - struct ext4_iloc *iloc, - void *buffer, loff_t pos, - unsigned int len); -extern int ext4_prepare_inline_data(handle_t *handle, struct inode *inode, - unsigned int len); extern int ext4_init_inline_data(handle_t *handle, struct inode *inode, unsigned int len); extern int ext4_destroy_inline_data(handle_t *handle, struct inode *inode); @@ -2584,13 +3004,15 @@ extern int ext4_da_write_inline_data_end(struct inode *inode, loff_t pos, unsigned len, unsigned copied, struct page *page); -extern int ext4_try_add_inline_entry(handle_t *handle, struct dentry *dentry, +extern int ext4_try_add_inline_entry(handle_t *handle, + struct ext4_filename *fname, + struct dentry *dentry, struct inode *inode); extern int ext4_try_create_inline_dir(handle_t *handle, struct inode *parent, struct inode *inode); extern int ext4_read_inline_dir(struct file *filp, - void *dirent, filldir_t filldir, + struct dir_context *ctx, int *has_inline_data); extern int htree_inlinedir_to_tree(struct file *dir_file, struct inode *dir, ext4_lblk_t block, @@ -2598,6 +3020,7 @@ __u32 start_hash, __u32 start_minor_hash, int *has_inline_data); extern struct buffer_head *ext4_find_inline_entry(struct inode *dir, + struct ext4_filename *fname, const struct qstr *d_name, struct ext4_dir_entry_2 **res_dir, int *has_inline_data); @@ -2612,7 +3035,7 @@ int *retval); extern int ext4_inline_data_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, - int *has_inline); + int *has_inline, __u64 start, __u64 len); extern int ext4_try_to_evict_inline_data(handle_t *handle, struct inode *inode, int needed); @@ -2620,6 +3043,12 @@ extern int ext4_convert_inline_data(struct inode *inode); +static inline int ext4_has_inline_data(struct inode *inode) +{ + return ext4_test_inode_flag(inode, EXT4_INODE_INLINE_DATA) && + EXT4_I(inode)->i_inline_off; +} + /* namei.c */ extern const struct inode_operations ext4_dir_inode_operations; extern const struct inode_operations ext4_special_inode_operations; @@ -2647,15 +3076,26 @@ static inline void ext4_set_de_type(struct super_block *sb, struct ext4_dir_entry_2 *de, umode_t mode) { - if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FILETYPE)) + if (ext4_has_feature_filetype(sb)) de->file_type = ext4_type_by_mode[(mode & S_IFMT)>>S_SHIFT]; } +/* readpages.c */ +extern int ext4_mpage_readpages(struct address_space *mapping, + struct list_head *pages, struct page *page, + unsigned nr_pages); /* symlink.c */ +extern const struct inode_operations ext4_encrypted_symlink_inode_operations; extern const struct inode_operations ext4_symlink_inode_operations; extern const struct inode_operations ext4_fast_symlink_inode_operations; +/* sysfs.c */ +extern int ext4_register_sysfs(struct super_block *sb); +extern void ext4_unregister_sysfs(struct super_block *sb); +extern int __init ext4_init_sysfs(void); +extern void ext4_exit_sysfs(void); + /* block_validity */ extern void ext4_release_system_zone(struct super_block *sb); extern int ext4_setup_system_zone(struct super_block *sb); @@ -2671,10 +3111,15 @@ struct ext4_ext_path; struct ext4_extent; +/* + * Maximum number of logical blocks in a file; ext4_extent's ee_block is + * __le32. + */ +#define EXT_MAX_BLOCKS 0xffffffff + extern int ext4_ext_tree_init(handle_t *handle, struct inode *); extern int ext4_ext_writepage_trans_blocks(struct inode *, int); -extern int ext4_ext_index_trans_blocks(struct inode *inode, int nrblocks, - int chunk); +extern int ext4_ext_index_trans_blocks(struct inode *inode, int extents); extern int ext4_ext_map_blocks(handle_t *handle, struct inode *inode, struct ext4_map_blocks *map, int flags); extern void ext4_ext_truncate(handle_t *, struct inode *); @@ -2684,13 +3129,12 @@ extern void ext4_ext_release(struct super_block *); extern long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len); -extern int ext4_convert_unwritten_extents(struct inode *inode, loff_t offset, - ssize_t len); +extern int ext4_convert_unwritten_extents(handle_t *handle, struct inode *inode, + loff_t offset, ssize_t len); extern int ext4_map_blocks(handle_t *handle, struct inode *inode, struct ext4_map_blocks *map, int flags); extern int ext4_ext_calc_metadata_amount(struct inode *inode, ext4_lblk_t lblocks); -extern int ext4_extent_tree_init(handle_t *, struct inode *); extern int ext4_ext_calc_credits_for_single_extent(struct inode *inode, int num, struct ext4_ext_path *path); @@ -2698,64 +3142,56 @@ struct ext4_extent *ex1, struct ext4_extent *ex2); extern int ext4_ext_insert_extent(handle_t *, struct inode *, - struct ext4_ext_path *, + struct ext4_ext_path **, struct ext4_extent *, int); -extern struct ext4_ext_path *ext4_ext_find_extent(struct inode *, ext4_lblk_t, - struct ext4_ext_path *); +extern struct ext4_ext_path *ext4_find_extent(struct inode *, ext4_lblk_t, + struct ext4_ext_path **, + int flags); extern void ext4_ext_drop_refs(struct ext4_ext_path *); extern int ext4_ext_check_inode(struct inode *inode); extern int ext4_find_delalloc_range(struct inode *inode, ext4_lblk_t lblk_start, ext4_lblk_t lblk_end); extern int ext4_find_delalloc_cluster(struct inode *inode, ext4_lblk_t lblk); +extern ext4_lblk_t ext4_ext_next_allocated_block(struct ext4_ext_path *path); extern int ext4_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, __u64 start, __u64 len); - +extern int ext4_ext_precache(struct inode *inode); +extern int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len); +extern int ext4_insert_range(struct inode *inode, loff_t offset, loff_t len); +extern int ext4_swap_extents(handle_t *handle, struct inode *inode1, + struct inode *inode2, ext4_lblk_t lblk1, + ext4_lblk_t lblk2, ext4_lblk_t count, + int mark_unwritten,int *err); /* move_extent.c */ extern void ext4_double_down_write_data_sem(struct inode *first, struct inode *second); extern void ext4_double_up_write_data_sem(struct inode *orig_inode, struct inode *donor_inode); -void ext4_inode_double_lock(struct inode *inode1, struct inode *inode2); -void ext4_inode_double_unlock(struct inode *inode1, struct inode *inode2); extern int ext4_move_extents(struct file *o_filp, struct file *d_filp, __u64 start_orig, __u64 start_donor, __u64 len, __u64 *moved_len); /* page-io.c */ extern int __init ext4_init_pageio(void); -extern void ext4_add_complete_io(ext4_io_end_t *io_end); extern void ext4_exit_pageio(void); -extern void ext4_ioend_shutdown(struct inode *); -extern void ext4_free_io_end(ext4_io_end_t *io); extern ext4_io_end_t *ext4_init_io_end(struct inode *inode, gfp_t flags); -extern void ext4_end_io_work(struct work_struct *work); +extern ext4_io_end_t *ext4_get_io_end(ext4_io_end_t *io_end); +extern int ext4_put_io_end(ext4_io_end_t *io_end); +extern void ext4_put_io_end_defer(ext4_io_end_t *io_end); +extern void ext4_io_submit_init(struct ext4_io_submit *io, + struct writeback_control *wbc); +extern void ext4_end_io_rsv_work(struct work_struct *work); extern void ext4_io_submit(struct ext4_io_submit *io); extern int ext4_bio_write_page(struct ext4_io_submit *io, struct page *page, int len, - struct writeback_control *wbc); + struct writeback_control *wbc, + bool keep_towrite); /* mmp.c */ extern int ext4_multi_mount_protect(struct super_block *, ext4_fsblk_t); -extern void ext4_mmp_csum_set(struct super_block *sb, struct mmp_struct *mmp); -extern int ext4_mmp_csum_verify(struct super_block *sb, - struct mmp_struct *mmp); - -/* BH_Uninit flag: blocks are allocated but uninitialized on disk */ -enum ext4_state_bits { - BH_Uninit /* blocks are allocated but uninitialized on disk */ - = BH_JBDPrivateStart, - BH_AllocFromCluster, /* allocated blocks were part of already - * allocated cluster. Note that this flag will - * never, ever appear in a buffer_head's state - * flag. See EXT4_MAP_FROM_CLUSTER to see where - * this is used. */ -}; - -BUFFER_FNS(Uninit, uninit) -TAS_BUFFER_FNS(Uninit, uninit) /* * Add new method to test whether block and inode bitmaps are properly @@ -2806,4 +3242,7 @@ #endif /* __KERNEL__ */ +#define EFSBADCRC EBADMSG /* Bad CRC detected */ +#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */ + #endif /* _EXT4_H */