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Diffstat (limited to 'fs/ext4/ext4.h')
-rw-r--r--fs/ext4/ext4.h158
1 files changed, 41 insertions, 117 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 08b29c289da4..8104a21b001a 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -40,6 +40,7 @@
#ifdef __KERNEL__
#include <linux/compat.h>
#endif
+#include <uapi/linux/ext4.h>
#include <linux/fscrypt.h>
#include <linux/fsverity.h>
@@ -591,17 +592,6 @@ static inline void ext4_check_flag_values(void)
CHECK_FLAG_VALUE(RESERVED);
}
-/* Used to pass group descriptor data when online resize is done */
-struct ext4_new_group_input {
- __u32 group; /* Group number for this data */
- __u64 block_bitmap; /* Absolute block number of block bitmap */
- __u64 inode_bitmap; /* Absolute block number of inode bitmap */
- __u64 inode_table; /* Absolute block number of inode table start */
- __u32 blocks_count; /* Total number of blocks in this group */
- __u16 reserved_blocks; /* Number of reserved blocks in this group */
- __u16 unused;
-};
-
#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
struct compat_ext4_new_group_input {
u32 group;
@@ -698,70 +688,6 @@ enum {
#define EXT4_FREE_BLOCKS_NOFREE_LAST_CLUSTER 0x0020
#define EXT4_FREE_BLOCKS_RERESERVE_CLUSTER 0x0040
-/*
- * ioctl commands
- */
-#define EXT4_IOC_GETVERSION _IOR('f', 3, long)
-#define EXT4_IOC_SETVERSION _IOW('f', 4, long)
-#define EXT4_IOC_GETVERSION_OLD FS_IOC_GETVERSION
-#define EXT4_IOC_SETVERSION_OLD FS_IOC_SETVERSION
-#define EXT4_IOC_GETRSVSZ _IOR('f', 5, long)
-#define EXT4_IOC_SETRSVSZ _IOW('f', 6, long)
-#define EXT4_IOC_GROUP_EXTEND _IOW('f', 7, unsigned long)
-#define EXT4_IOC_GROUP_ADD _IOW('f', 8, struct ext4_new_group_input)
-#define EXT4_IOC_MIGRATE _IO('f', 9)
- /* note ioctl 10 reserved for an early version of the FIEMAP ioctl */
- /* note ioctl 11 reserved for filesystem-independent FIEMAP ioctl */
-#define EXT4_IOC_ALLOC_DA_BLKS _IO('f', 12)
-#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)
-/* ioctl codes 19--39 are reserved for fscrypt */
-#define EXT4_IOC_CLEAR_ES_CACHE _IO('f', 40)
-#define EXT4_IOC_GETSTATE _IOW('f', 41, __u32)
-#define EXT4_IOC_GET_ES_CACHE _IOWR('f', 42, struct fiemap)
-#define EXT4_IOC_CHECKPOINT _IOW('f', 43, __u32)
-#define EXT4_IOC_GETFSUUID _IOR('f', 44, struct fsuuid)
-#define EXT4_IOC_SETFSUUID _IOW('f', 44, struct fsuuid)
-
-#define EXT4_IOC_SHUTDOWN _IOR ('X', 125, __u32)
-
-/*
- * Flags for going down operation
- */
-#define EXT4_GOING_FLAGS_DEFAULT 0x0 /* going down */
-#define EXT4_GOING_FLAGS_LOGFLUSH 0x1 /* flush log but not data */
-#define EXT4_GOING_FLAGS_NOLOGFLUSH 0x2 /* don't flush log nor data */
-
-/*
- * Flags returned by EXT4_IOC_GETSTATE
- *
- * We only expose to userspace a subset of the state flags in
- * i_state_flags
- */
-#define EXT4_STATE_FLAG_EXT_PRECACHED 0x00000001
-#define EXT4_STATE_FLAG_NEW 0x00000002
-#define EXT4_STATE_FLAG_NEWENTRY 0x00000004
-#define EXT4_STATE_FLAG_DA_ALLOC_CLOSE 0x00000008
-
-/* flags for ioctl EXT4_IOC_CHECKPOINT */
-#define EXT4_IOC_CHECKPOINT_FLAG_DISCARD 0x1
-#define EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT 0x2
-#define EXT4_IOC_CHECKPOINT_FLAG_DRY_RUN 0x4
-#define EXT4_IOC_CHECKPOINT_FLAG_VALID (EXT4_IOC_CHECKPOINT_FLAG_DISCARD | \
- EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT | \
- EXT4_IOC_CHECKPOINT_FLAG_DRY_RUN)
-
-/*
- * Structure for EXT4_IOC_GETFSUUID/EXT4_IOC_SETFSUUID
- */
-struct fsuuid {
- __u32 fsu_len;
- __u32 fsu_flags;
- __u8 fsu_uuid[];
-};
-
#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
/*
* ioctl commands in 32 bit emulation
@@ -776,12 +702,6 @@ struct fsuuid {
#define EXT4_IOC32_SETVERSION_OLD FS_IOC32_SETVERSION
#endif
-/*
- * Returned by EXT4_IOC_GET_ES_CACHE as an additional possible flag.
- * It indicates that the entry in extent status cache is for a hole.
- */
-#define EXT4_FIEMAP_EXTENT_HOLE 0x08000000
-
/* Max physical block we can address w/o extents */
#define EXT4_MAX_BLOCK_FILE_PHYS 0xFFFFFFFF
@@ -852,15 +772,6 @@ struct ext4_inode {
__le32 i_projid; /* Project ID */
};
-struct move_extent {
- __u32 reserved; /* should be zero */
- __u32 donor_fd; /* donor file descriptor */
- __u64 orig_start; /* logical start offset in block for orig */
- __u64 donor_start; /* logical start offset in block for donor */
- __u64 len; /* block length to be moved */
- __u64 moved_len; /* moved block length */
-};
-
#define EXT4_EPOCH_BITS 2
#define EXT4_EPOCH_MASK ((1 << EXT4_EPOCH_BITS) - 1)
#define EXT4_NSEC_MASK (~0UL << EXT4_EPOCH_BITS)
@@ -1007,11 +918,13 @@ do { \
* where the second inode has larger inode number
* than the first
* I_DATA_SEM_QUOTA - Used for quota inodes only
+ * I_DATA_SEM_EA - Used for ea_inodes only
*/
enum {
I_DATA_SEM_NORMAL = 0,
I_DATA_SEM_OTHER,
I_DATA_SEM_QUOTA,
+ I_DATA_SEM_EA
};
@@ -1120,8 +1033,8 @@ struct ext4_inode_info {
/* mballoc */
atomic_t i_prealloc_active;
- struct list_head i_prealloc_list;
- spinlock_t i_prealloc_lock;
+ struct rb_root i_prealloc_node;
+ rwlock_t i_prealloc_lock;
/* extents status tree */
struct ext4_es_tree i_es_tree;
@@ -1613,7 +1526,6 @@ struct ext4_sb_info {
unsigned int s_mb_stats;
unsigned int s_mb_order2_reqs;
unsigned int s_mb_group_prealloc;
- unsigned int s_mb_max_inode_prealloc;
unsigned int s_max_dir_size_kb;
/* where last allocation was done - for stream allocation */
unsigned long s_mb_last_group;
@@ -1774,6 +1686,30 @@ static inline struct ext4_inode_info *EXT4_I(struct inode *inode)
return container_of(inode, struct ext4_inode_info, vfs_inode);
}
+static inline int ext4_writepages_down_read(struct super_block *sb)
+{
+ percpu_down_read(&EXT4_SB(sb)->s_writepages_rwsem);
+ return memalloc_nofs_save();
+}
+
+static inline void ext4_writepages_up_read(struct super_block *sb, int ctx)
+{
+ memalloc_nofs_restore(ctx);
+ percpu_up_read(&EXT4_SB(sb)->s_writepages_rwsem);
+}
+
+static inline int ext4_writepages_down_write(struct super_block *sb)
+{
+ percpu_down_write(&EXT4_SB(sb)->s_writepages_rwsem);
+ return memalloc_nofs_save();
+}
+
+static inline void ext4_writepages_up_write(struct super_block *sb, int ctx)
+{
+ memalloc_nofs_restore(ctx);
+ percpu_up_write(&EXT4_SB(sb)->s_writepages_rwsem);
+}
+
static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino)
{
return ino == EXT4_ROOT_INO ||
@@ -1887,7 +1823,6 @@ static inline void ext4_simulate_fail_bh(struct super_block *sb,
* Inode dynamic state flags
*/
enum {
- EXT4_STATE_JDATA, /* journaled data exists */
EXT4_STATE_NEW, /* inode is newly created */
EXT4_STATE_XATTR, /* has in-inode xattrs */
EXT4_STATE_NO_EXPAND, /* No space for expansion */
@@ -2676,16 +2611,16 @@ struct mmpd_data {
/* bitmap.c */
extern unsigned int ext4_count_free(char *bitmap, unsigned numchars);
-void ext4_inode_bitmap_csum_set(struct super_block *sb, ext4_group_t group,
+void ext4_inode_bitmap_csum_set(struct super_block *sb,
struct ext4_group_desc *gdp,
struct buffer_head *bh, int sz);
-int ext4_inode_bitmap_csum_verify(struct super_block *sb, ext4_group_t group,
+int ext4_inode_bitmap_csum_verify(struct super_block *sb,
struct ext4_group_desc *gdp,
struct buffer_head *bh, int sz);
-void ext4_block_bitmap_csum_set(struct super_block *sb, ext4_group_t group,
+void ext4_block_bitmap_csum_set(struct super_block *sb,
struct ext4_group_desc *gdp,
struct buffer_head *bh);
-int ext4_block_bitmap_csum_verify(struct super_block *sb, ext4_group_t group,
+int ext4_block_bitmap_csum_verify(struct super_block *sb,
struct ext4_group_desc *gdp,
struct buffer_head *bh);
@@ -2716,6 +2651,8 @@ extern void ext4_check_blocks_bitmap(struct super_block *);
extern struct ext4_group_desc * ext4_get_group_desc(struct super_block * sb,
ext4_group_t block_group,
struct buffer_head ** bh);
+extern struct ext4_group_info *ext4_get_group_info(struct super_block *sb,
+ ext4_group_t group);
extern int ext4_should_retry_alloc(struct super_block *sb, int *retries);
extern struct buffer_head *ext4_read_block_bitmap_nowait(struct super_block *sb,
@@ -2966,7 +2903,8 @@ typedef enum {
EXT4_IGET_NORMAL = 0,
EXT4_IGET_SPECIAL = 0x0001, /* OK to iget a system inode */
EXT4_IGET_HANDLE = 0x0002, /* Inode # is from a handle */
- EXT4_IGET_BAD = 0x0004 /* Allow to iget a bad inode */
+ EXT4_IGET_BAD = 0x0004, /* Allow to iget a bad inode */
+ EXT4_IGET_EA_INODE = 0x0008 /* Inode should contain an EA value */
} ext4_iget_flags;
extern struct inode *__ext4_iget(struct super_block *sb, unsigned long ino,
@@ -3323,19 +3261,6 @@ static inline void ext4_isize_set(struct ext4_inode *raw_inode, loff_t i_size)
raw_inode->i_size_high = cpu_to_le32(i_size >> 32);
}
-static inline
-struct ext4_group_info *ext4_get_group_info(struct super_block *sb,
- ext4_group_t group)
-{
- struct ext4_group_info **grp_info;
- long indexv, indexh;
- BUG_ON(group >= EXT4_SB(sb)->s_groups_count);
- indexv = group >> (EXT4_DESC_PER_BLOCK_BITS(sb));
- indexh = group & ((EXT4_DESC_PER_BLOCK(sb)) - 1);
- grp_info = sbi_array_rcu_deref(EXT4_SB(sb), s_group_info, indexv);
- return grp_info[indexh];
-}
-
/*
* Reading s_groups_count requires using smp_rmb() afterwards. See
* the locking protocol documented in the comments of ext4_group_add()
@@ -3550,7 +3475,7 @@ 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);
-extern int ext4_readpage_inline(struct inode *inode, struct page *page);
+int ext4_readpage_inline(struct inode *inode, struct folio *folio);
extern int ext4_try_to_write_inline_data(struct address_space *mapping,
struct inode *inode,
loff_t pos, unsigned len,
@@ -3647,7 +3572,7 @@ static inline void ext4_set_de_type(struct super_block *sb,
/* readpages.c */
extern int ext4_mpage_readpages(struct inode *inode,
- struct readahead_control *rac, struct page *page);
+ struct readahead_control *rac, struct folio *folio);
extern int __init ext4_init_post_read_processing(void);
extern void ext4_exit_post_read_processing(void);
@@ -3757,9 +3682,8 @@ 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);
+int ext4_bio_write_folio(struct ext4_io_submit *io, struct folio *page,
+ size_t len);
extern struct ext4_io_end_vec *ext4_alloc_io_end_vec(ext4_io_end_t *io_end);
extern struct ext4_io_end_vec *ext4_last_io_end_vec(ext4_io_end_t *io_end);
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