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Diffstat (limited to 'fs/ext4/ext4.h')
-rw-r--r--fs/ext4/ext4.h71
1 files changed, 44 insertions, 27 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 3825195539d7..a743b1e3b89e 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -17,6 +17,7 @@
#ifndef _EXT4_H
#define _EXT4_H
+#include <linux/refcount.h>
#include <linux/types.h>
#include <linux/blkdev.h>
#include <linux/magic.h>
@@ -241,7 +242,7 @@ typedef struct ext4_io_end {
struct bio *bio; /* Linked list of completed
* bios covering the extent */
unsigned int flag; /* unwritten or not */
- atomic_t count; /* reference counter */
+ refcount_t count; /* reference counter */
struct list_head list_vec; /* list of ext4_io_end_vec */
} ext4_io_end_t;
@@ -1027,7 +1028,7 @@ struct ext4_inode_info {
/*
* Extended attributes can be read independently of the main file
- * data. Taking i_mutex even when reading would cause contention
+ * data. Taking i_rwsem even when reading would cause contention
* between readers of EAs and writers of regular file data, so
* instead we synchronize on xattr_sem when reading or changing
* EAs.
@@ -1045,6 +1046,8 @@ struct ext4_inode_info {
/* Fast commit related info */
+ /* For tracking dentry create updates */
+ struct list_head i_fc_dilist;
struct list_head i_fc_list; /*
* inodes that need fast commit
* protected by sbi->s_fc_lock.
@@ -1278,7 +1281,7 @@ struct ext4_inode_info {
#define ext4_find_next_zero_bit find_next_zero_bit_le
#define ext4_find_next_bit find_next_bit_le
-extern void ext4_set_bits(void *bm, int cur, int len);
+extern void mb_set_bits(void *bm, int cur, int len);
/*
* Maximal mount counts between two filesystem checks
@@ -1297,6 +1300,8 @@ extern void ext4_set_bits(void *bm, int cur, int len);
/* Metadata checksum algorithm codes */
#define EXT4_CRC32C_CHKSUM 1
+#define EXT4_LABEL_MAX 16
+
/*
* Structure of the super block
*/
@@ -1346,7 +1351,7 @@ struct ext4_super_block {
/*60*/ __le32 s_feature_incompat; /* incompatible feature set */
__le32 s_feature_ro_compat; /* readonly-compatible feature set */
/*68*/ __u8 s_uuid[16]; /* 128-bit uuid for volume */
-/*78*/ char s_volume_name[16]; /* volume name */
+/*78*/ char s_volume_name[EXT4_LABEL_MAX]; /* volume name */
/*88*/ char s_last_mounted[64] __nonstring; /* directory where last mounted */
/*C8*/ __le32 s_algorithm_usage_bitmap; /* For compression */
/*
@@ -1660,7 +1665,7 @@ struct ext4_sb_info {
struct task_struct *s_mmp_tsk;
/* record the last minlen when FITRIM is called. */
- atomic_t s_last_trim_minblks;
+ unsigned long s_last_trim_minblks;
/* Reference to checksum algorithm driver via cryptoapi */
struct crypto_shash *s_chksum_driver;
@@ -1696,6 +1701,7 @@ struct ext4_sb_info {
*/
struct percpu_rw_semaphore s_writepages_rwsem;
struct dax_device *s_daxdev;
+ u64 s_dax_part_off;
#ifdef CONFIG_EXT4_DEBUG
unsigned long s_simulate_fail;
#endif
@@ -1724,9 +1730,9 @@ struct ext4_sb_info {
*/
struct work_struct s_error_work;
- /* Ext4 fast commit stuff */
+ /* Ext4 fast commit sub transaction ID */
atomic_t s_fc_subtid;
- atomic_t s_fc_ineligible_updates;
+
/*
* After commit starts, the main queue gets locked, and the further
* updates get added in the staging queue.
@@ -1746,7 +1752,7 @@ struct ext4_sb_info {
spinlock_t s_fc_lock;
struct buffer_head *s_fc_bh;
struct ext4_fc_stats s_fc_stats;
- u64 s_fc_avg_commit_time;
+ tid_t s_fc_ineligible_tid;
#ifdef CONFIG_EXT4_DEBUG
int s_fc_debug_max_replay;
#endif
@@ -1792,10 +1798,7 @@ static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino)
enum {
EXT4_MF_MNTDIR_SAMPLED,
EXT4_MF_FS_ABORTED, /* Fatal error detected */
- EXT4_MF_FC_INELIGIBLE, /* Fast commit ineligible */
- EXT4_MF_FC_COMMITTING /* File system underoing a fast
- * commit.
- */
+ EXT4_MF_FC_INELIGIBLE /* Fast commit ineligible */
};
static inline void ext4_set_mount_flag(struct super_block *sb, int bit)
@@ -2270,6 +2273,10 @@ static inline int ext4_forced_shutdown(struct ext4_sb_info *sbi)
* Structure of a directory entry
*/
#define EXT4_NAME_LEN 255
+/*
+ * Base length of the ext4 directory entry excluding the name length
+ */
+#define EXT4_BASE_DIR_LEN (sizeof(struct ext4_dir_entry_2) - EXT4_NAME_LEN)
struct ext4_dir_entry {
__le32 inode; /* Inode number */
@@ -2398,8 +2405,7 @@ ext4_rec_len_from_disk(__le16 dlen, unsigned blocksize)
static inline __le16 ext4_rec_len_to_disk(unsigned len, unsigned blocksize)
{
- if ((len > blocksize) || (blocksize > (1 << 18)) || (len & 3))
- BUG();
+ BUG_ON((len > blocksize) || (blocksize > (1 << 18)) || (len & 3));
#if (PAGE_SIZE >= 65536)
if (len < 65536)
return cpu_to_le16(len);
@@ -2483,7 +2489,7 @@ struct ext4_filename {
#ifdef CONFIG_FS_ENCRYPTION
struct fscrypt_str crypto_buf;
#endif
-#ifdef CONFIG_UNICODE
+#if IS_ENABLED(CONFIG_UNICODE)
struct fscrypt_str cf_name;
#endif
};
@@ -2719,7 +2725,7 @@ extern unsigned ext4_free_clusters_after_init(struct super_block *sb,
struct ext4_group_desc *gdp);
ext4_fsblk_t ext4_inode_to_goal_block(struct inode *);
-#ifdef CONFIG_UNICODE
+#if IS_ENABLED(CONFIG_UNICODE)
extern int ext4_fname_setup_ci_filename(struct inode *dir,
const struct qstr *iname,
struct ext4_filename *fname);
@@ -2752,7 +2758,7 @@ static inline int ext4_fname_setup_filename(struct inode *dir,
ext4_fname_from_fscrypt_name(fname, &name);
-#ifdef CONFIG_UNICODE
+#if IS_ENABLED(CONFIG_UNICODE)
err = ext4_fname_setup_ci_filename(dir, iname, fname);
#endif
return err;
@@ -2771,7 +2777,7 @@ static inline int ext4_fname_prepare_lookup(struct inode *dir,
ext4_fname_from_fscrypt_name(fname, &name);
-#ifdef CONFIG_UNICODE
+#if IS_ENABLED(CONFIG_UNICODE)
err = ext4_fname_setup_ci_filename(dir, &dentry->d_name, fname);
#endif
return err;
@@ -2788,7 +2794,7 @@ static inline void ext4_fname_free_filename(struct ext4_filename *fname)
fname->usr_fname = NULL;
fname->disk_name.name = NULL;
-#ifdef CONFIG_UNICODE
+#if IS_ENABLED(CONFIG_UNICODE)
kfree(fname->cf_name.name);
fname->cf_name.name = NULL;
#endif
@@ -2804,7 +2810,7 @@ static inline int ext4_fname_setup_filename(struct inode *dir,
fname->disk_name.name = (unsigned char *) iname->name;
fname->disk_name.len = iname->len;
-#ifdef CONFIG_UNICODE
+#if IS_ENABLED(CONFIG_UNICODE)
err = ext4_fname_setup_ci_filename(dir, iname, fname);
#endif
@@ -2820,7 +2826,7 @@ static inline int ext4_fname_prepare_lookup(struct inode *dir,
static inline void ext4_fname_free_filename(struct ext4_filename *fname)
{
-#ifdef CONFIG_UNICODE
+#if IS_ENABLED(CONFIG_UNICODE)
kfree(fname->cf_name.name);
fname->cf_name.name = NULL;
#endif
@@ -2924,9 +2930,7 @@ void __ext4_fc_track_create(handle_t *handle, struct inode *inode,
struct dentry *dentry);
void ext4_fc_track_create(handle_t *handle, struct dentry *dentry);
void ext4_fc_track_inode(handle_t *handle, struct inode *inode);
-void ext4_fc_mark_ineligible(struct super_block *sb, int reason);
-void ext4_fc_start_ineligible(struct super_block *sb, int reason);
-void ext4_fc_stop_ineligible(struct super_block *sb);
+void ext4_fc_mark_ineligible(struct super_block *sb, int reason, handle_t *handle);
void ext4_fc_start_update(struct inode *inode);
void ext4_fc_stop_update(struct inode *inode);
void ext4_fc_del(struct inode *inode);
@@ -2934,6 +2938,10 @@ bool ext4_fc_replay_check_excluded(struct super_block *sb, ext4_fsblk_t block);
void ext4_fc_replay_cleanup(struct super_block *sb);
int ext4_fc_commit(journal_t *journal, tid_t commit_tid);
int __init ext4_fc_init_dentry_cache(void);
+void ext4_fc_destroy_dentry_cache(void);
+int ext4_fc_record_regions(struct super_block *sb, int ino,
+ ext4_lblk_t lblk, ext4_fsblk_t pblk,
+ int len, int replay);
/* mballoc.c */
extern const struct seq_operations ext4_mb_seq_groups_ops;
@@ -3028,7 +3036,7 @@ extern int ext4_inode_attach_jinode(struct inode *inode);
extern int ext4_can_truncate(struct inode *inode);
extern int ext4_truncate(struct inode *);
extern int ext4_break_layouts(struct inode *);
-extern int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length);
+extern int ext4_punch_hole(struct file *file, loff_t offset, loff_t length);
extern void ext4_set_inode_flags(struct inode *, bool init);
extern int ext4_alloc_da_blocks(struct inode *inode);
extern void ext4_set_aops(struct inode *inode);
@@ -3060,6 +3068,7 @@ int ext4_fileattr_set(struct user_namespace *mnt_userns,
struct dentry *dentry, struct fileattr *fa);
int ext4_fileattr_get(struct dentry *dentry, struct fileattr *fa);
extern void ext4_reset_inode_seed(struct inode *inode);
+int ext4_update_overhead(struct super_block *sb);
/* migrate.c */
extern int ext4_ext_migrate(struct inode *);
@@ -3095,6 +3104,9 @@ extern int ext4_group_extend(struct super_block *sb,
struct ext4_super_block *es,
ext4_fsblk_t n_blocks_count);
extern int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count);
+extern unsigned int ext4_list_backups(struct super_block *sb,
+ unsigned int *three, unsigned int *five,
+ unsigned int *seven);
/* super.c */
extern struct buffer_head *ext4_sb_bread(struct super_block *sb,
@@ -3109,6 +3121,8 @@ extern int ext4_read_bh_lock(struct buffer_head *bh, int op_flags, bool wait);
extern void ext4_sb_breadahead_unmovable(struct super_block *sb, sector_t block);
extern int ext4_seq_options_show(struct seq_file *seq, void *offset);
extern int ext4_calculate_overhead(struct super_block *sb);
+extern __le32 ext4_superblock_csum(struct super_block *sb,
+ struct ext4_super_block *es);
extern void ext4_superblock_csum_set(struct super_block *sb);
extern int ext4_alloc_flex_bg_array(struct super_block *sb,
ext4_group_t ngroup);
@@ -3401,7 +3415,7 @@ do { \
#define EXT4_FREECLUSTERS_WATERMARK 0
#endif
-/* Update i_disksize. Requires i_mutex to avoid races with truncate */
+/* Update i_disksize. Requires i_rwsem to avoid races with truncate */
static inline void ext4_update_i_disksize(struct inode *inode, loff_t newsize)
{
WARN_ON_ONCE(S_ISREG(inode->i_mode) &&
@@ -3412,7 +3426,7 @@ static inline void ext4_update_i_disksize(struct inode *inode, loff_t newsize)
up_write(&EXT4_I(inode)->i_data_sem);
}
-/* Update i_size, i_disksize. Requires i_mutex to avoid races with truncate */
+/* Update i_size, i_disksize. Requires i_rwsem to avoid races with truncate */
static inline int ext4_update_inode_size(struct inode *inode, loff_t newsize)
{
int changed = 0;
@@ -3700,6 +3714,9 @@ extern int ext4_inode_block_valid(struct inode *inode,
unsigned int count);
extern int ext4_check_blockref(const char *, unsigned int,
struct inode *, __le32 *, unsigned int);
+extern int ext4_sb_block_valid(struct super_block *sb, struct inode *inode,
+ ext4_fsblk_t start_blk, unsigned int count);
+
/* extents.c */
struct ext4_ext_path;
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-28 16:18:35 +0000