Lines Matching +full:mmp +full:- +full:timer
1 // SPDX-License-Identifier: GPL-2.0
7 * Laboratoire MASI - Institut Blaise Pascal
30 #include <linux/timer.h>
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 */
276 * Flags for ext4_io_end->flags
291 struct list_head list; /* per-file finished IO list */
321 /* First non-reserved inode for old ext4 filesystems */
330 * Macro-instructions used to manage several block sizes
338 # define EXT4_BLOCK_SIZE(s) ((s)->s_blocksize)
340 # define EXT4_BLOCK_SIZE(s) (EXT4_MIN_BLOCK_SIZE << (s)->s_log_block_size)
344 EXT4_SB(s)->s_cluster_bits)
346 # define EXT4_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits)
347 # define EXT4_CLUSTER_BITS(s) (EXT4_SB(s)->s_cluster_bits)
349 # define EXT4_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10)
352 #define EXT4_ADDR_PER_BLOCK_BITS(s) (EXT4_SB(s)->s_addr_per_block_bits)
353 #define EXT4_INODE_SIZE(s) (EXT4_SB(s)->s_inode_size)
354 #define EXT4_FIRST_INO(s) (EXT4_SB(s)->s_first_ino)
356 #define EXT4_INODE_SIZE(s) (((s)->s_rev_level == EXT4_GOOD_OLD_REV) ? \
358 (s)->s_inode_size)
359 #define EXT4_FIRST_INO(s) (((s)->s_rev_level == EXT4_GOOD_OLD_REV) ? \
361 (s)->s_first_ino)
365 ((EXT4_BLOCK_ALIGN(size + offset, blkbits) >> blkbits) - (offset >> \
369 #define EXT4_B2C(sbi, blk) ((blk) >> (sbi)->s_cluster_bits)
371 #define EXT4_C2B(sbi, cluster) ((cluster) << (sbi)->s_cluster_bits)
373 #define EXT4_NUM_B2C(sbi, blks) (((blks) + (sbi)->s_cluster_ratio - 1) >> \
374 (sbi)->s_cluster_bits)
377 ~((ext4_fsblk_t) (s)->s_cluster_ratio - 1))
379 ~((ext4_lblk_t) (s)->s_cluster_ratio - 1))
382 ((ext4_lblk_t) (sbi)->s_cluster_ratio - 1))
385 ((ext4_fsblk_t) (s)->s_cluster_ratio - 1))
387 ((ext4_lblk_t) (s)->s_cluster_ratio - 1))
438 #define EXT4_BG_INODE_ZEROED 0x0004 /* On-disk itable initialized to zero */
441 * Macro-instructions used to manage group descriptors
446 #define EXT4_DESC_SIZE(s) (EXT4_SB(s)->s_desc_size)
448 # define EXT4_BLOCKS_PER_GROUP(s) (EXT4_SB(s)->s_blocks_per_group)
449 # define EXT4_CLUSTERS_PER_GROUP(s) (EXT4_SB(s)->s_clusters_per_group)
450 # define EXT4_DESC_PER_BLOCK(s) (EXT4_SB(s)->s_desc_per_block)
451 # define EXT4_INODES_PER_GROUP(s) (EXT4_SB(s)->s_inodes_per_group)
452 # define EXT4_DESC_PER_BLOCK_BITS(s) (EXT4_SB(s)->s_desc_per_block_bits)
454 # define EXT4_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group)
456 # define EXT4_INODES_PER_GROUP(s) ((s)->s_inodes_per_group)
485 /* End compression flags --- maybe not all used */
486 #define EXT4_INDEX_FL 0x00001000 /* hash-indexed directory */
542 /* Flags that are appropriate for regular files (all but dir-specific ones). */
546 /* Flags that are appropriate for non-directories/regular files. */
584 /* End compression flags --- maybe not all used */
585 EXT4_INODE_INDEX = 12, /* hash-indexed directory */
605 * build-time check to make sure that EXT4_XXX_FL is consistent with respect to
610 * with the values of FS_XXX_FL defined in include/linux/fs.h and the on-disk
614 * It's not paranoia if the Murphy's Law really *is* out to get you. :-)
825 __le32 i_version_hi; /* high 32 bits for 64-bit version */
830 #define EXT4_EPOCH_MASK ((1 << EXT4_EPOCH_BITS) - 1)
835 * with large inodes (-I 256 or larger) and there are not currently any EAs
841 * inode-size = GOOD_OLD_INODE_SIZE + i_extra_isize
845 sizeof((ext4_inode)->field)) \
847 (einode)->i_extra_isize)) \
853 * epoch 32-bit 32-bit tv_sec to
854 * bits time decoded 64-bit tv_sec 64-bit tv_sec valid time range
855 * 0 0 1 -0x80000000..-0x00000001 0x000000000 1901-12-13..1969-12-31
856 * 0 0 0 0x000000000..0x07fffffff 0x000000000 1970-01-01..2038-01-19
857 * 0 1 1 0x080000000..0x0ffffffff 0x100000000 2038-01-19..2106-02-07
858 * 0 1 0 0x100000000..0x17fffffff 0x100000000 2106-02-07..2174-02-25
859 * 1 0 1 0x180000000..0x1ffffffff 0x200000000 2174-02-25..2242-03-16
860 * 1 0 0 0x200000000..0x27fffffff 0x200000000 2242-03-16..2310-04-04
861 * 1 1 1 0x280000000..0x2ffffffff 0x300000000 2310-04-04..2378-04-22
862 * 1 1 0 0x300000000..0x37fffffff 0x300000000 2378-04-22..2446-05-10
864 * Note that previous versions of the kernel on 64-bit systems would
872 u32 extra = ((ts.tv_sec - (s32)ts.tv_sec) >> 32) & EXT4_EPOCH_MASK; in ext4_encode_extra_time()
890 (raw_inode)->xtime = cpu_to_le32((ts).tv_sec); \
891 (raw_inode)->xtime ## _extra = ext4_encode_extra_time(ts); \
893 (raw_inode)->xtime = cpu_to_le32(clamp_t(int32_t, (ts).tv_sec, S32_MIN, S32_MAX)); \
907 EXT4_INODE_SET_XTIME_VAL(xtime, &((einode)->vfs_inode), \
908 raw_inode, (einode)->xtime)
912 ext4_decode_extra_time((raw_inode)->xtime, \
913 (raw_inode)->xtime ## _extra) : \
915 .tv_sec = (signed)le32_to_cpu((raw_inode)->xtime) \
939 (einode)->xtime = \
940 EXT4_INODE_GET_XTIME_VAL(xtime, &(einode->vfs_inode), \
943 (einode)->xtime = (struct timespec64){0, 0}; \
981 * holding i_data_sem for a normal (non-quota) inode. Since we don't
986 * I_DATA_SEM_NORMAL - Used for most inodes
987 * I_DATA_SEM_OTHER - Used by move_inode.c for the second normal inode
990 * I_DATA_SEM_QUOTA - Used for quota inodes only
991 * I_DATA_SEM_EA - Used for ea_inodes only
1012 * it is used for making block allocation decisions - we try to
1047 * protected by sbi->s_fc_lock.
1074 * into the on-disk inode when writing inodes out, instead of i_size.
1089 * during recovery. Hence we must fix the get_block-vs-truncate race
1129 /* on-disk additional length */
1207 #define EXT4_MOUNT_NO_UID32 0x02000 /* Disable 32-bit UIDs */
1242 #define EXT4_MOUNT2_HURD_COMPAT 0x00000004 /* Support HURD-castrated
1255 #define clear_opt(sb, opt) EXT4_SB(sb)->s_mount_opt &= \
1257 #define set_opt(sb, opt) EXT4_SB(sb)->s_mount_opt |= \
1259 #define test_opt(sb, opt) (EXT4_SB(sb)->s_mount_opt & \
1262 #define clear_opt2(sb, opt) EXT4_SB(sb)->s_mount_opt2 &= \
1264 #define set_opt2(sb, opt) EXT4_SB(sb)->s_mount_opt2 |= \
1266 #define test_opt2(sb, opt) (EXT4_SB(sb)->s_mount_opt2 & \
1289 #define EXT4_ERRORS_RO 2 /* Remount fs read-only */
1340 __le32 s_first_ino; /* First non-reserved inode */
1345 __le32 s_feature_ro_compat; /* readonly-compatible feature set */
1346 /*68*/ __u8 s_uuid[16]; /* 128-bit uuid for volume */
1380 __le16 s_mmp_update_interval; /* # seconds to wait in MMP checking */
1381 __le64 s_mmp_block; /* Block for multi-mount protection */
1393 on-disk snapshot list */
1432 #define EXT4_S_ERR_LEN (EXT4_S_ERR_END - EXT4_S_ERR_START)
1470 return (sb->s_blocksize - sizeof(struct ext4_orphan_block_tail)) / in ext4_inodes_per_orphan_block()
1490 * fourth extended-fs super-block data in memory
1502 ext4_group_t s_blockfile_groups;/* Groups acceptable for non-extent files */
1600 /* where last allocation was done - for stream allocation */
1638 /* the size of zero-out chunk */
1648 /* timer for periodic error stats printing */
1687 /* Encryption policy for '-o test_dummy_encryption' */
1721 * If we are in a context where we cannot update the on-disk
1746 * ei->i_fc_list, s_fc_dentry_q, s_fc_q, s_fc_bytes, s_fc_bh.
1760 return sb->s_fs_info; in EXT4_SB()
1769 percpu_down_read(&EXT4_SB(sb)->s_writepages_rwsem); in ext4_writepages_down_read()
1776 percpu_up_read(&EXT4_SB(sb)->s_writepages_rwsem); in ext4_writepages_up_read()
1781 percpu_down_write(&EXT4_SB(sb)->s_writepages_rwsem); in ext4_writepages_down_write()
1788 percpu_up_write(&EXT4_SB(sb)->s_writepages_rwsem); in ext4_writepages_up_write()
1795 ino <= le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count)); in ext4_valid_inum()
1799 * Returns: sbi->field[index]
1802 * - s_group_desc
1803 * - s_group_info
1804 * - s_flex_group
1808 typeof(*((sbi)->field)) _v; \
1810 _v = ((typeof(_v)*)rcu_dereference((sbi)->field))[index]; \
1816 * run-time mount flags
1825 set_bit(bit, &EXT4_SB(sb)->s_mount_flags); in ext4_set_mount_flag()
1830 clear_bit(bit, &EXT4_SB(sb)->s_mount_flags); in ext4_clear_mount_flag()
1835 return test_bit(bit, &EXT4_SB(sb)->s_mount_flags); in ext4_test_mount_flag()
1857 if (unlikely(sbi->s_simulate_fail == code)) { in ext4_simulate_fail()
1858 sbi->s_simulate_fail = 0; in ext4_simulate_fail()
1904 EXT4_STATE_XATTR, /* has in-inode xattrs */
1909 EXT4_STATE_MAY_INLINE_DATA, /* may have in-inode data */
1911 EXT4_STATE_LUSTRE_EA_INODE, /* Lustre-style ea_inode */
1912 EXT4_STATE_VERITY_IN_PROGRESS, /* building fs-verity Merkle tree */
1920 return test_bit(bit + (offset), &EXT4_I(inode)->i_##field); \
1924 set_bit(bit + (offset), &EXT4_I(inode)->i_##field); \
1928 clear_bit(bit + (offset), &EXT4_I(inode)->i_##field); \
1948 (ei)->i_state_flags = 0; in ext4_clear_state_flags()
1960 * a kernel struct super_block. This will allow us to call the feature-test
1971 #define NEXT_ORPHAN(inode) EXT4_I(inode)->i_dtime
1992 #define EXT4_EXTRA_TIMESTAMP_MAX (((s64)1 << 34) - 1 + S32_MIN)
2038 non-empty */
2052 #define EXT4_FEATURE_INCOMPAT_LARGEDIR 0x4000 /* >2GB or 3-lvl htree */
2062 return ((EXT4_SB(sb)->s_es->s_feature_compat & \
2068 EXT4_SB(sb)->s_es->s_feature_compat |= \
2073 EXT4_SB(sb)->s_es->s_feature_compat &= \
2080 return ((EXT4_SB(sb)->s_es->s_feature_ro_compat & \
2086 EXT4_SB(sb)->s_es->s_feature_ro_compat |= \
2091 EXT4_SB(sb)->s_es->s_feature_ro_compat &= \
2098 return ((EXT4_SB(sb)->s_es->s_feature_incompat & \
2104 EXT4_SB(sb)->s_es->s_feature_incompat |= \
2109 EXT4_SB(sb)->s_es->s_feature_incompat &= \
2146 EXT4_FEATURE_INCOMPAT_FUNCS(mmp, MMP) in EXT4_FEATURE_COMPAT_FUNCS()
2203 return ((EXT4_SB(sb)->s_es->s_feature_compat & \ in EXT4_FEATURE_COMPAT_FUNCS()
2208 return ((EXT4_SB(sb)->s_es->s_feature_ro_compat & \
2213 return ((EXT4_SB(sb)->s_es->s_feature_incompat & \
2223 return (EXT4_SB(sb)->s_es->s_feature_compat != 0);
2227 return (EXT4_SB(sb)->s_es->s_feature_ro_compat != 0); in ext4_has_ro_compat_features()
2231 return (EXT4_SB(sb)->s_es->s_feature_incompat != 0); in ext4_has_incompat_features()
2245 return test_bit(EXT4_FLAGS_SHUTDOWN, &EXT4_SB(sb)->s_ext4_flags); in ext4_forced_shutdown()
2297 #define EXT4_BASE_DIR_LEN (sizeof(struct ext4_dir_entry_2) - EXT4_NAME_LEN)
2337 ((8 + (entry)->name_len + EXT4_DIR_ROUND) & ~EXT4_DIR_ROUND)))
2338 #define EXT4_DIRENT_HASH(entry) le32_to_cpu(EXT4_DIRENT_HASHES(de)->hash)
2340 le32_to_cpu(EXT4_DIRENT_HASHES(de)->minor_hash)
2361 ((blocksize) - \
2387 #define EXT4_DIR_ROUND (EXT4_DIR_PAD - 1)
2388 #define EXT4_MAX_REC_LEN ((1<<16)-1)
2447 #define is_dx(dir) (ext4_has_feature_dir_index((dir)->i_sb) && \
2449 #define EXT4_DIR_LINK_MAX(dir) unlikely((dir)->i_nlink >= EXT4_LINK_MAX && \
2450 !(ext4_has_feature_dir_nlink((dir)->i_sb) && is_dx(dir)))
2451 #define EXT4_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2 || (dir)->i_nlink == 1)
2471 BUG_ON(crypto_shash_descsize(sbi->s_chksum_driver)!=sizeof(desc.ctx)); in ext4_chksum()
2473 desc.shash.tfm = sbi->s_chksum_driver; in ext4_chksum()
2494 #define EXT4_HTREE_EOF_32BIT ((1UL << (32 - 1)) - 1)
2495 #define EXT4_HTREE_EOF_64BIT ((1ULL << (64 - 1)) - 1)
2515 #define fname_name(p) ((p)->disk_name.name)
2516 #define fname_usr_name(p) ((p)->usr_fname->name)
2517 #define fname_len(p) ((p)->disk_name.len)
2531 return (struct ext4_inode *) (iloc->bh->b_data + iloc->offset); in ext4_raw_inode()
2537 !(EXT4_I(inode)->i_flags & EXT4_EA_INODE_FL); in ext4_is_quota_file()
2560 le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block); in ext4_group_first_block_no()
2566 #define ERR_BAD_DX_DIR (-(MAX_ERRNO - 1))
2618 * superblock. Programs that check MMP should assume that if
2622 #define EXT4_MMP_MAGIC 0x004D4D50U /* ASCII for MMP */
2628 __le32 mmp_magic; /* Magic number for MMP */
2636 char mmp_nodename[64]; /* Node which last updated MMP block */
2637 char mmp_bdevname[32]; /* Bdev which last updated MMP block */
2640 * mmp_check_interval is used to verify if the MMP block has been
2642 * maximum time to write the MMP block during an update cycle.
2651 /* arguments passed to the mmp thread */
2659 * The MMP block is written every update interval and initially checked every
2668 * Minimum interval for MMP checking in seconds.
2673 * Maximum interval for MMP checking in seconds.
2770 fname->usr_fname = iname; in ext4_fname_setup_filename()
2771 fname->disk_name.name = (unsigned char *) iname->name; in ext4_fname_setup_filename()
2772 fname->disk_name.len = iname->len; in ext4_fname_setup_filename()
2785 return ext4_fname_setup_filename(dir, &dentry->d_name, 1, fname); in ext4_fname_prepare_lookup()
2791 kfree(fname->cf_name.name); in ext4_fname_free_filename()
2792 fname->cf_name.name = NULL; in ext4_fname_free_filename()
2799 return -EOPNOTSUPP; in ext4_ioctl_get_encryption_pwsalt()
2828 if (!ext4_has_feature_dir_index(inode->i_sb) && in ext4_update_dx_flag()
2831 WARN_ON_ONCE(ext4_has_feature_metadata_csum(inode->i_sb)); in ext4_update_dx_flag()
3127 extern void __dump_mmp_msg(struct super_block *, struct mmp_struct *mmp,
3172 #define dump_mmp_msg(sb, mmp, msg) \ argument
3173 __dump_mmp_msg(sb, mmp, __func__, __LINE__, msg)
3220 #define dump_mmp_msg(sb, mmp, msg) \ argument
3221 __dump_mmp_msg(sb, mmp, "", 0, "")
3269 !EXT4_SB(sb)->s_chksum_driver); in ext4_has_metadata_csum()
3272 (EXT4_SB(sb)->s_chksum_driver != NULL); in ext4_has_metadata_csum()
3281 (((es)->s_feature_incompat & cpu_to_le32(EXT4_FEATURE_INCOMPAT_64BIT) \
3282 ? (ext4_fsblk_t)le32_to_cpu(es->name##_hi) << 32 : 0) | \
3283 le32_to_cpu(es->name##_lo))
3303 es->s_blocks_count_lo = cpu_to_le32((u32)blk); in ext4_blocks_count_set()
3304 es->s_blocks_count_hi = cpu_to_le32(blk >> 32); in ext4_blocks_count_set()
3310 es->s_free_blocks_count_lo = cpu_to_le32((u32)blk); in ext4_free_blocks_count_set()
3311 es->s_free_blocks_count_hi = cpu_to_le32(blk >> 32); in ext4_free_blocks_count_set()
3317 es->s_r_blocks_count_lo = cpu_to_le32((u32)blk); in ext4_r_blocks_count_set()
3318 es->s_r_blocks_count_hi = cpu_to_le32(blk >> 32); in ext4_r_blocks_count_set()
3325 S_ISREG(le16_to_cpu(raw_inode->i_mode))) in ext4_isize()
3326 return ((loff_t)le32_to_cpu(raw_inode->i_size_high) << 32) | in ext4_isize()
3327 le32_to_cpu(raw_inode->i_size_lo); in ext4_isize()
3329 return (loff_t) le32_to_cpu(raw_inode->i_size_lo); in ext4_isize()
3334 raw_inode->i_size_lo = cpu_to_le32(i_size); in ext4_isize_set()
3335 raw_inode->i_size_high = cpu_to_le32(i_size >> 32); in ext4_isize_set()
3345 ext4_group_t ngroups = EXT4_SB(sb)->s_groups_count; in ext4_get_groups_count()
3354 return block_group >> sbi->s_log_groups_per_flex; in ext4_flex_group()
3359 return 1 << sbi->s_log_groups_per_flex; in ext4_flex_bg_size()
3381 WARN_ON_ONCE(S_ISREG(inode->i_mode) && in ext4_update_i_disksize()
3383 down_write(&EXT4_I(inode)->i_data_sem); in ext4_update_i_disksize()
3384 if (newsize > EXT4_I(inode)->i_disksize) in ext4_update_i_disksize()
3385 WRITE_ONCE(EXT4_I(inode)->i_disksize, newsize); in ext4_update_i_disksize()
3386 up_write(&EXT4_I(inode)->i_data_sem); in ext4_update_i_disksize()
3394 if (newsize > inode->i_size) { in ext4_update_inode_size()
3398 if (newsize > EXT4_I(inode)->i_disksize) { in ext4_update_inode_size()
3428 ext4_grpblk_t bb_counters[]; /* Nr of free power-of-two-block
3431 * 5 free 8-block regions. */
3445 (test_bit(EXT4_GROUP_INFO_NEED_INIT_BIT, &((grp)->bb_state)))
3447 (test_bit(EXT4_GROUP_INFO_BBITMAP_CORRUPT_BIT, &((grp)->bb_state)))
3449 (test_bit(EXT4_GROUP_INFO_IBITMAP_CORRUPT_BIT, &((grp)->bb_state)))
3452 (test_bit(EXT4_GROUP_INFO_WAS_TRIMMED_BIT, &((grp)->bb_state)))
3454 (set_bit(EXT4_GROUP_INFO_WAS_TRIMMED_BIT, &((grp)->bb_state)))
3456 (clear_bit(EXT4_GROUP_INFO_WAS_TRIMMED_BIT, &((grp)->bb_state)))
3458 (test_and_set_bit(EXT4_GROUP_INFO_BBITMAP_READ_BIT, &((grp)->bb_state)))
3466 return bgl_lock_ptr(EXT4_SB(sb)->s_blockgroup_lock, group); in ext4_group_lock_ptr()
3475 return (atomic_read(&sbi->s_lock_busy) > EXT4_CONTENTION_THRESHOLD); in ext4_fs_is_busy()
3486 atomic_add_unless(&EXT4_SB(sb)->s_lock_busy, -1, 0); in ext4_lock_group()
3492 atomic_add_unless(&EXT4_SB(sb)->s_lock_busy, 1, in ext4_lock_group()
3515 sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]); in ext4_is_quota_journalled()
3525 (__le32 *)(bh)->b_data, \
3526 EXT4_ADDR_PER_BLOCK((inode)->i_sb))
3530 EXT4_I(inode)->i_data, \
3601 EXT4_I(inode)->i_inline_off; in ext4_has_inline_data()
3636 de->file_type = ext4_type_by_mode[(mode & S_IFMT)>>S_SHIFT]; in ext4_set_de_type()
3740 /* page-io.c */
3756 /* mmp.c */
3759 /* mmp.c */
3781 * to mark the bitmap uptodate. We need to also zero-out the bitmap
3788 test_bit(BH_BITMAP_UPTODATE, &(bh)->b_state)); in bitmap_uptodate()
3792 set_bit(BH_BITMAP_UPTODATE, &(bh)->b_state); in set_bitmap_uptodate()
3807 if (!(io_end->flag & EXT4_IO_END_UNWRITTEN)) { in ext4_set_io_unwritten_flag()
3808 io_end->flag |= EXT4_IO_END_UNWRITTEN; in ext4_set_io_unwritten_flag()
3809 atomic_inc(&EXT4_I(inode)->i_unwritten); in ext4_set_io_unwritten_flag()
3815 struct inode *inode = io_end->inode; in ext4_clear_io_unwritten_flag()
3817 if (io_end->flag & EXT4_IO_END_UNWRITTEN) { in ext4_clear_io_unwritten_flag()
3818 io_end->flag &= ~EXT4_IO_END_UNWRITTEN; in ext4_clear_io_unwritten_flag()
3820 if (atomic_dec_and_test(&EXT4_I(inode)->i_unwritten)) in ext4_clear_io_unwritten_flag()