Lines Matching +full:boot +full:- +full:blks
1 // SPDX-License-Identifier: GPL-2.0
7 * Laboratoire MASI - Institut Blaise Pascal
38 #include <linux/percpu-rwsem.h>
61 * with DOUBLE_CHECK defined mballoc creates persistent in-core
77 printk(KERN_DEBUG "EXT4-fs DEBUG (%s, %d): %s:", \
95 pr_debug("[%s/%d] EXT4-fs (%s): ino %lu: (%s, %d): %s:" fmt, \
96 current->comm, task_pid_nr(current), \
97 ino->i_sb->s_id, ino->i_ino, __FILE__, __LINE__, \
116 /* data type for filesystem-wide blocks number */
146 * Tries to lookup in-memory data structures to find the most
206 /* blocks already pre-reserved by delayed allocation */
274 * Flags for ext4_io_end->flags
289 struct list_head list; /* per-file finished IO list */
314 #define EXT4_BOOT_LOADER_INO 5 /* Boot loader inode */
319 /* First non-reserved inode for old ext4 filesystems */
328 * Macro-instructions used to manage several block sizes
336 # define EXT4_BLOCK_SIZE(s) ((s)->s_blocksize)
338 # define EXT4_BLOCK_SIZE(s) (EXT4_MIN_BLOCK_SIZE << (s)->s_log_block_size)
342 EXT4_SB(s)->s_cluster_bits)
344 # define EXT4_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits)
345 # define EXT4_CLUSTER_BITS(s) (EXT4_SB(s)->s_cluster_bits)
347 # define EXT4_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10)
350 #define EXT4_ADDR_PER_BLOCK_BITS(s) (EXT4_SB(s)->s_addr_per_block_bits)
351 #define EXT4_INODE_SIZE(s) (EXT4_SB(s)->s_inode_size)
352 #define EXT4_FIRST_INO(s) (EXT4_SB(s)->s_first_ino)
354 #define EXT4_INODE_SIZE(s) (((s)->s_rev_level == EXT4_GOOD_OLD_REV) ? \
356 (s)->s_inode_size)
357 #define EXT4_FIRST_INO(s) (((s)->s_rev_level == EXT4_GOOD_OLD_REV) ? \
359 (s)->s_first_ino)
363 ((EXT4_BLOCK_ALIGN(size + offset, blkbits) >> blkbits) - (offset >> \
367 #define EXT4_B2C(sbi, blk) ((blk) >> (sbi)->s_cluster_bits)
369 #define EXT4_C2B(sbi, cluster) ((cluster) << (sbi)->s_cluster_bits)
370 /* Translate # of blks to # of clusters */
371 #define EXT4_NUM_B2C(sbi, blks) (((blks) + (sbi)->s_cluster_ratio - 1) >> \ argument
372 (sbi)->s_cluster_bits)
375 ~((ext4_fsblk_t) (s)->s_cluster_ratio - 1))
377 ~((ext4_lblk_t) (s)->s_cluster_ratio - 1))
380 ((ext4_lblk_t) (sbi)->s_cluster_ratio - 1))
383 ((ext4_fsblk_t) (s)->s_cluster_ratio - 1))
385 ((ext4_lblk_t) (s)->s_cluster_ratio - 1))
436 #define EXT4_BG_INODE_ZEROED 0x0004 /* On-disk itable initialized to zero */
439 * Macro-instructions used to manage group descriptors
444 #define EXT4_DESC_SIZE(s) (EXT4_SB(s)->s_desc_size)
446 # define EXT4_BLOCKS_PER_GROUP(s) (EXT4_SB(s)->s_blocks_per_group)
447 # define EXT4_CLUSTERS_PER_GROUP(s) (EXT4_SB(s)->s_clusters_per_group)
448 # define EXT4_DESC_PER_BLOCK(s) (EXT4_SB(s)->s_desc_per_block)
449 # define EXT4_INODES_PER_GROUP(s) (EXT4_SB(s)->s_inodes_per_group)
450 # define EXT4_DESC_PER_BLOCK_BITS(s) (EXT4_SB(s)->s_desc_per_block_bits)
452 # define EXT4_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group)
454 # define EXT4_INODES_PER_GROUP(s) ((s)->s_inodes_per_group)
483 /* End compression flags --- maybe not all used */
484 #define EXT4_INDEX_FL 0x00001000 /* hash-indexed directory */
540 /* Flags that are appropriate for regular files (all but dir-specific ones). */
544 /* Flags that are appropriate for non-directories/regular files. */
582 /* End compression flags --- maybe not all used */
583 EXT4_INODE_INDEX = 12, /* hash-indexed directory */
603 * build-time check to make sure that EXT4_XXX_FL is consistent with respect to
608 * with the values of FS_XXX_FL defined in include/linux/fs.h and the on-disk
612 * It's not paranoia if the Murphy's Law really *is* out to get you. :-)
823 __le32 i_version_hi; /* high 32 bits for 64-bit version */
828 #define EXT4_EPOCH_MASK ((1 << EXT4_EPOCH_BITS) - 1)
833 * with large inodes (-I 256 or larger) and there are not currently any EAs
839 * inode-size = GOOD_OLD_INODE_SIZE + i_extra_isize
843 sizeof((ext4_inode)->field)) \
845 (einode)->i_extra_isize)) \
851 * epoch 32-bit 32-bit tv_sec to
852 * bits time decoded 64-bit tv_sec 64-bit tv_sec valid time range
853 * 0 0 1 -0x80000000..-0x00000001 0x000000000 1901-12-13..1969-12-31
854 * 0 0 0 0x000000000..0x07fffffff 0x000000000 1970-01-01..2038-01-19
855 * 0 1 1 0x080000000..0x0ffffffff 0x100000000 2038-01-19..2106-02-07
856 * 0 1 0 0x100000000..0x17fffffff 0x100000000 2106-02-07..2174-02-25
857 * 1 0 1 0x180000000..0x1ffffffff 0x200000000 2174-02-25..2242-03-16
858 * 1 0 0 0x200000000..0x27fffffff 0x200000000 2242-03-16..2310-04-04
859 * 1 1 1 0x280000000..0x2ffffffff 0x300000000 2310-04-04..2378-04-22
860 * 1 1 0 0x300000000..0x37fffffff 0x300000000 2378-04-22..2446-05-10
862 * Note that previous versions of the kernel on 64-bit systems would
870 u32 extra = ((ts.tv_sec - (s32)ts.tv_sec) >> 32) & EXT4_EPOCH_MASK; in ext4_encode_extra_time()
888 (raw_inode)->xtime = cpu_to_le32((ts).tv_sec); \
889 (raw_inode)->xtime ## _extra = ext4_encode_extra_time(ts); \
891 (raw_inode)->xtime = cpu_to_le32(clamp_t(int32_t, (ts).tv_sec, S32_MIN, S32_MAX)); \
895 EXT4_INODE_SET_XTIME_VAL(xtime, inode, raw_inode, (inode)->xtime)
902 EXT4_INODE_SET_XTIME_VAL(xtime, &((einode)->vfs_inode), \
903 raw_inode, (einode)->xtime)
907 ext4_decode_extra_time((raw_inode)->xtime, \
908 (raw_inode)->xtime ## _extra) : \
910 .tv_sec = (signed)le32_to_cpu((raw_inode)->xtime) \
915 (inode)->xtime = EXT4_INODE_GET_XTIME_VAL(xtime, inode, raw_inode); \
927 (einode)->xtime = \
928 EXT4_INODE_GET_XTIME_VAL(xtime, &(einode->vfs_inode), \
931 (einode)->xtime = (struct timespec64){0, 0}; \
969 * holding i_data_sem for a normal (non-quota) inode. Since we don't
974 * I_DATA_SEM_NORMAL - Used for most inodes
975 * I_DATA_SEM_OTHER - Used by move_inode.c for the second normal inode
978 * I_DATA_SEM_QUOTA - Used for quota inodes only
979 * I_DATA_SEM_EA - Used for ea_inodes only
1000 * it is used for making block allocation decisions - we try to
1035 * protected by sbi->s_fc_lock.
1062 * into the on-disk inode when writing inodes out, instead of i_size.
1077 * during recovery. Hence we must fix the get_block-vs-truncate race
1117 /* on-disk additional length */
1195 #define EXT4_MOUNT_NO_UID32 0x02000 /* Disable 32-bit UIDs */
1230 #define EXT4_MOUNT2_HURD_COMPAT 0x00000004 /* Support HURD-castrated
1243 #define clear_opt(sb, opt) EXT4_SB(sb)->s_mount_opt &= \
1245 #define set_opt(sb, opt) EXT4_SB(sb)->s_mount_opt |= \
1247 #define test_opt(sb, opt) (EXT4_SB(sb)->s_mount_opt & \
1250 #define clear_opt2(sb, opt) EXT4_SB(sb)->s_mount_opt2 &= \
1252 #define set_opt2(sb, opt) EXT4_SB(sb)->s_mount_opt2 |= \
1254 #define test_opt2(sb, opt) (EXT4_SB(sb)->s_mount_opt2 & \
1277 #define EXT4_ERRORS_RO 2 /* Remount fs read-only */
1328 __le32 s_first_ino; /* First non-reserved inode */
1333 __le32 s_feature_ro_compat; /* readonly-compatible feature set */
1334 /*68*/ __u8 s_uuid[16]; /* 128-bit uuid for volume */
1369 __le64 s_mmp_block; /* Block for multi-mount protection */
1381 on-disk snapshot list */
1420 #define EXT4_S_ERR_LEN (EXT4_S_ERR_END - EXT4_S_ERR_START)
1458 return (sb->s_blocksize - sizeof(struct ext4_orphan_block_tail)) / in ext4_inodes_per_orphan_block()
1478 * fourth extended-fs super-block data in memory
1490 ext4_group_t s_blockfile_groups;/* Groups acceptable for non-extent files */
1587 /* where last allocation was done - for stream allocation */
1625 /* the size of zero-out chunk */
1674 /* Encryption policy for '-o test_dummy_encryption' */
1708 * If we are in a context where we cannot update the on-disk
1733 * ei->i_fc_list, s_fc_dentry_q, s_fc_q, s_fc_bytes, s_fc_bh.
1747 return sb->s_fs_info; in EXT4_SB()
1756 percpu_down_read(&EXT4_SB(sb)->s_writepages_rwsem); in ext4_writepages_down_read()
1763 percpu_up_read(&EXT4_SB(sb)->s_writepages_rwsem); in ext4_writepages_up_read()
1768 percpu_down_write(&EXT4_SB(sb)->s_writepages_rwsem); in ext4_writepages_down_write()
1775 percpu_up_write(&EXT4_SB(sb)->s_writepages_rwsem); in ext4_writepages_up_write()
1782 ino <= le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count)); in ext4_valid_inum()
1786 * Returns: sbi->field[index]
1789 * - s_group_desc
1790 * - s_group_info
1791 * - s_flex_group
1795 typeof(*((sbi)->field)) _v; \
1797 _v = ((typeof(_v)*)rcu_dereference((sbi)->field))[index]; \
1803 * run-time mount flags
1812 set_bit(bit, &EXT4_SB(sb)->s_mount_flags); in ext4_set_mount_flag()
1817 clear_bit(bit, &EXT4_SB(sb)->s_mount_flags); in ext4_clear_mount_flag()
1822 return test_bit(bit, &EXT4_SB(sb)->s_mount_flags); in ext4_test_mount_flag()
1844 if (unlikely(sbi->s_simulate_fail == code)) { in ext4_simulate_fail()
1845 sbi->s_simulate_fail = 0; in ext4_simulate_fail()
1883 EXT4_STATE_XATTR, /* has in-inode xattrs */
1885 EXT4_STATE_DA_ALLOC_CLOSE, /* Alloc DA blks on close */
1888 EXT4_STATE_MAY_INLINE_DATA, /* may have in-inode data */
1890 EXT4_STATE_LUSTRE_EA_INODE, /* Lustre-style ea_inode */
1891 EXT4_STATE_VERITY_IN_PROGRESS, /* building fs-verity Merkle tree */
1899 return test_bit(bit + (offset), &EXT4_I(inode)->i_##field); \
1903 set_bit(bit + (offset), &EXT4_I(inode)->i_##field); \
1907 clear_bit(bit + (offset), &EXT4_I(inode)->i_##field); \
1927 (ei)->i_state_flags = 0; in ext4_clear_state_flags()
1939 * a kernel struct super_block. This will allow us to call the feature-test
1950 #define NEXT_ORPHAN(inode) EXT4_I(inode)->i_dtime
1971 #define EXT4_EXTRA_TIMESTAMP_MAX (((s64)1 << 34) - 1 + S32_MIN)
2017 non-empty */
2031 #define EXT4_FEATURE_INCOMPAT_LARGEDIR 0x4000 /* >2GB or 3-lvl htree */
2041 return ((EXT4_SB(sb)->s_es->s_feature_compat & \
2047 EXT4_SB(sb)->s_es->s_feature_compat |= \
2052 EXT4_SB(sb)->s_es->s_feature_compat &= \
2059 return ((EXT4_SB(sb)->s_es->s_feature_ro_compat & \
2065 EXT4_SB(sb)->s_es->s_feature_ro_compat |= \
2070 EXT4_SB(sb)->s_es->s_feature_ro_compat &= \
2077 return ((EXT4_SB(sb)->s_es->s_feature_incompat & \
2083 EXT4_SB(sb)->s_es->s_feature_incompat |= \
2088 EXT4_SB(sb)->s_es->s_feature_incompat &= \
2182 return ((EXT4_SB(sb)->s_es->s_feature_compat & \ in EXT4_FEATURE_COMPAT_FUNCS()
2187 return ((EXT4_SB(sb)->s_es->s_feature_ro_compat & \
2192 return ((EXT4_SB(sb)->s_es->s_feature_incompat & \
2202 return (EXT4_SB(sb)->s_es->s_feature_compat != 0);
2206 return (EXT4_SB(sb)->s_es->s_feature_ro_compat != 0); in ext4_has_ro_compat_features()
2210 return (EXT4_SB(sb)->s_es->s_feature_incompat != 0); in ext4_has_incompat_features()
2224 return test_bit(EXT4_FLAGS_SHUTDOWN, &EXT4_SB(sb)->s_ext4_flags); in ext4_forced_shutdown()
2276 #define EXT4_BASE_DIR_LEN (sizeof(struct ext4_dir_entry_2) - EXT4_NAME_LEN)
2316 ((8 + (entry)->name_len + EXT4_DIR_ROUND) & ~EXT4_DIR_ROUND)))
2317 #define EXT4_DIRENT_HASH(entry) le32_to_cpu(EXT4_DIRENT_HASHES(de)->hash)
2319 le32_to_cpu(EXT4_DIRENT_HASHES(de)->minor_hash)
2340 ((blocksize) - \
2366 #define EXT4_DIR_ROUND (EXT4_DIR_PAD - 1)
2367 #define EXT4_MAX_REC_LEN ((1<<16)-1)
2426 #define is_dx(dir) (ext4_has_feature_dir_index((dir)->i_sb) && \
2428 #define EXT4_DIR_LINK_MAX(dir) unlikely((dir)->i_nlink >= EXT4_LINK_MAX && \
2429 !(ext4_has_feature_dir_nlink((dir)->i_sb) && is_dx(dir)))
2430 #define EXT4_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2 || (dir)->i_nlink == 1)
2450 BUG_ON(crypto_shash_descsize(sbi->s_chksum_driver)!=sizeof(desc.ctx)); in ext4_chksum()
2452 desc.shash.tfm = sbi->s_chksum_driver; in ext4_chksum()
2473 #define EXT4_HTREE_EOF_32BIT ((1UL << (32 - 1)) - 1)
2474 #define EXT4_HTREE_EOF_64BIT ((1ULL << (64 - 1)) - 1)
2494 #define fname_name(p) ((p)->disk_name.name)
2495 #define fname_usr_name(p) ((p)->usr_fname->name)
2496 #define fname_len(p) ((p)->disk_name.len)
2510 return (struct ext4_inode *) (iloc->bh->b_data + iloc->offset); in ext4_raw_inode()
2516 !(EXT4_I(inode)->i_flags & EXT4_EA_INODE_FL); in ext4_is_quota_file()
2539 le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block); in ext4_group_first_block_no()
2545 #define ERR_BAD_DX_DIR (-(MAX_ERRNO - 1))
2749 fname->usr_fname = iname; in ext4_fname_setup_filename()
2750 fname->disk_name.name = (unsigned char *) iname->name; in ext4_fname_setup_filename()
2751 fname->disk_name.len = iname->len; in ext4_fname_setup_filename()
2764 return ext4_fname_setup_filename(dir, &dentry->d_name, 1, fname); in ext4_fname_prepare_lookup()
2770 kfree(fname->cf_name.name); in ext4_fname_free_filename()
2771 fname->cf_name.name = NULL; in ext4_fname_free_filename()
2778 return -EOPNOTSUPP; in ext4_ioctl_get_encryption_pwsalt()
2807 if (!ext4_has_feature_dir_index(inode->i_sb) && in ext4_update_dx_flag()
2810 WARN_ON_ONCE(ext4_has_feature_metadata_csum(inode->i_sb)); in ext4_update_dx_flag()
3248 !EXT4_SB(sb)->s_chksum_driver); in ext4_has_metadata_csum()
3251 (EXT4_SB(sb)->s_chksum_driver != NULL); in ext4_has_metadata_csum()
3260 (((es)->s_feature_incompat & cpu_to_le32(EXT4_FEATURE_INCOMPAT_64BIT) \
3261 ? (ext4_fsblk_t)le32_to_cpu(es->name##_hi) << 32 : 0) | \
3262 le32_to_cpu(es->name##_lo))
3282 es->s_blocks_count_lo = cpu_to_le32((u32)blk); in ext4_blocks_count_set()
3283 es->s_blocks_count_hi = cpu_to_le32(blk >> 32); in ext4_blocks_count_set()
3289 es->s_free_blocks_count_lo = cpu_to_le32((u32)blk); in ext4_free_blocks_count_set()
3290 es->s_free_blocks_count_hi = cpu_to_le32(blk >> 32); in ext4_free_blocks_count_set()
3296 es->s_r_blocks_count_lo = cpu_to_le32((u32)blk); in ext4_r_blocks_count_set()
3297 es->s_r_blocks_count_hi = cpu_to_le32(blk >> 32); in ext4_r_blocks_count_set()
3304 S_ISREG(le16_to_cpu(raw_inode->i_mode))) in ext4_isize()
3305 return ((loff_t)le32_to_cpu(raw_inode->i_size_high) << 32) | in ext4_isize()
3306 le32_to_cpu(raw_inode->i_size_lo); in ext4_isize()
3308 return (loff_t) le32_to_cpu(raw_inode->i_size_lo); in ext4_isize()
3313 raw_inode->i_size_lo = cpu_to_le32(i_size); in ext4_isize_set()
3314 raw_inode->i_size_high = cpu_to_le32(i_size >> 32); in ext4_isize_set()
3324 ext4_group_t ngroups = EXT4_SB(sb)->s_groups_count; in ext4_get_groups_count()
3333 return block_group >> sbi->s_log_groups_per_flex; in ext4_flex_group()
3338 return 1 << sbi->s_log_groups_per_flex; in ext4_flex_bg_size()
3360 WARN_ON_ONCE(S_ISREG(inode->i_mode) && in ext4_update_i_disksize()
3362 down_write(&EXT4_I(inode)->i_data_sem); in ext4_update_i_disksize()
3363 if (newsize > EXT4_I(inode)->i_disksize) in ext4_update_i_disksize()
3364 WRITE_ONCE(EXT4_I(inode)->i_disksize, newsize); in ext4_update_i_disksize()
3365 up_write(&EXT4_I(inode)->i_data_sem); in ext4_update_i_disksize()
3373 if (newsize > inode->i_size) { in ext4_update_inode_size()
3377 if (newsize > EXT4_I(inode)->i_disksize) { in ext4_update_inode_size()
3407 ext4_grpblk_t bb_counters[]; /* Nr of free power-of-two-block
3410 * 5 free 8-block regions. */
3424 (test_bit(EXT4_GROUP_INFO_NEED_INIT_BIT, &((grp)->bb_state)))
3426 (test_bit(EXT4_GROUP_INFO_BBITMAP_CORRUPT_BIT, &((grp)->bb_state)))
3428 (test_bit(EXT4_GROUP_INFO_IBITMAP_CORRUPT_BIT, &((grp)->bb_state)))
3431 (test_bit(EXT4_GROUP_INFO_WAS_TRIMMED_BIT, &((grp)->bb_state)))
3433 (set_bit(EXT4_GROUP_INFO_WAS_TRIMMED_BIT, &((grp)->bb_state)))
3435 (clear_bit(EXT4_GROUP_INFO_WAS_TRIMMED_BIT, &((grp)->bb_state)))
3437 (test_and_set_bit(EXT4_GROUP_INFO_BBITMAP_READ_BIT, &((grp)->bb_state)))
3445 return bgl_lock_ptr(EXT4_SB(sb)->s_blockgroup_lock, group); in ext4_group_lock_ptr()
3454 return (atomic_read(&sbi->s_lock_busy) > EXT4_CONTENTION_THRESHOLD); in ext4_fs_is_busy()
3465 atomic_add_unless(&EXT4_SB(sb)->s_lock_busy, -1, 0); in ext4_lock_group()
3471 atomic_add_unless(&EXT4_SB(sb)->s_lock_busy, 1, in ext4_lock_group()
3494 sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]); in ext4_is_quota_journalled()
3504 (__le32 *)(bh)->b_data, \
3505 EXT4_ADDR_PER_BLOCK((inode)->i_sb))
3509 EXT4_I(inode)->i_data, \
3580 EXT4_I(inode)->i_inline_off; in ext4_has_inline_data()
3615 de->file_type = ext4_type_by_mode[(mode & S_IFMT)>>S_SHIFT]; in ext4_set_de_type()
3719 /* page-io.c */
3760 * to mark the bitmap uptodate. We need to also zero-out the bitmap
3767 test_bit(BH_BITMAP_UPTODATE, &(bh)->b_state)); in bitmap_uptodate()
3771 set_bit(BH_BITMAP_UPTODATE, &(bh)->b_state); in set_bitmap_uptodate()
3786 if (!(io_end->flag & EXT4_IO_END_UNWRITTEN)) { in ext4_set_io_unwritten_flag()
3787 io_end->flag |= EXT4_IO_END_UNWRITTEN; in ext4_set_io_unwritten_flag()
3788 atomic_inc(&EXT4_I(inode)->i_unwritten); in ext4_set_io_unwritten_flag()
3794 struct inode *inode = io_end->inode; in ext4_clear_io_unwritten_flag()
3796 if (io_end->flag & EXT4_IO_END_UNWRITTEN) { in ext4_clear_io_unwritten_flag()
3797 io_end->flag &= ~EXT4_IO_END_UNWRITTEN; in ext4_clear_io_unwritten_flag()
3799 if (atomic_dec_and_test(&EXT4_I(inode)->i_unwritten)) in ext4_clear_io_unwritten_flag()