diff options
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 54 |
1 files changed, 41 insertions, 13 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index e227eea..984ca0c 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -65,6 +65,12 @@ typedef __u32 ext4_lblk_t; /* data type for block group number */ typedef unsigned int ext4_group_t; +/* + * Flags used in mballoc's allocation_context flags field. + * + * Also used to show what's going on for debugging purposes when the + * flag field is exported via the traceport interface + */ /* prefer goal again. length */ #define EXT4_MB_HINT_MERGE 0x0001 @@ -127,6 +133,16 @@ struct mpage_da_data { int pages_written; int retval; }; +#define DIO_AIO_UNWRITTEN 0x1 +typedef struct ext4_io_end { + struct list_head list; /* per-file finished AIO list */ + struct inode *inode; /* file being written to */ + unsigned int flag; /* unwritten or not */ + int error; /* I/O error code */ + ext4_lblk_t offset; /* offset in the file */ + size_t size; /* size of the extent */ + struct work_struct work; /* data work queue */ +} ext4_io_end_t; /* * Special inodes numbers @@ -347,7 +363,16 @@ struct ext4_new_group_data { /* Call ext4_da_update_reserve_space() after successfully allocating the blocks */ #define EXT4_GET_BLOCKS_UPDATE_RESERVE_SPACE 0x0008 - + /* caller is from the direct IO path, request to creation of an + unitialized extents if not allocated, split the uninitialized + extent if blocks has been preallocated already*/ +#define EXT4_GET_BLOCKS_DIO 0x0010 +#define EXT4_GET_BLOCKS_CONVERT 0x0020 +#define EXT4_GET_BLOCKS_DIO_CREATE_EXT (EXT4_GET_BLOCKS_DIO|\ + EXT4_GET_BLOCKS_CREATE_UNINIT_EXT) + /* Convert extent to initialized after direct IO complete */ +#define EXT4_GET_BLOCKS_DIO_CONVERT_EXT (EXT4_GET_BLOCKS_CONVERT|\ + EXT4_GET_BLOCKS_DIO_CREATE_EXT) /* * ioctl commands @@ -500,8 +525,8 @@ struct move_extent { static inline __le32 ext4_encode_extra_time(struct timespec *time) { return cpu_to_le32((sizeof(time->tv_sec) > 4 ? - time->tv_sec >> 32 : 0) | - ((time->tv_nsec << 2) & EXT4_NSEC_MASK)); + (time->tv_sec >> 32) & EXT4_EPOCH_MASK : 0) | + ((time->tv_nsec << EXT4_EPOCH_BITS) & EXT4_NSEC_MASK)); } static inline void ext4_decode_extra_time(struct timespec *time, __le32 extra) @@ -509,7 +534,7 @@ static inline void ext4_decode_extra_time(struct timespec *time, __le32 extra) if (sizeof(time->tv_sec) > 4) time->tv_sec |= (__u64)(le32_to_cpu(extra) & EXT4_EPOCH_MASK) << 32; - time->tv_nsec = (le32_to_cpu(extra) & EXT4_NSEC_MASK) >> 2; + time->tv_nsec = (le32_to_cpu(extra) & EXT4_NSEC_MASK) >> EXT4_EPOCH_BITS; } #define EXT4_INODE_SET_XTIME(xtime, inode, raw_inode) \ @@ -672,6 +697,11 @@ struct ext4_inode_info { __u16 i_extra_isize; spinlock_t i_block_reservation_lock; + + /* completed async DIOs that might need unwritten extents handling */ + struct list_head i_aio_dio_complete_list; + /* current io_end structure for async DIO write*/ + ext4_io_end_t *cur_aio_dio; }; /* @@ -942,18 +972,11 @@ struct ext4_sb_info { unsigned int s_mb_stats; unsigned int s_mb_order2_reqs; unsigned int s_mb_group_prealloc; + unsigned int s_max_writeback_mb_bump; /* where last allocation was done - for stream allocation */ unsigned long s_mb_last_group; unsigned long s_mb_last_start; - /* history to debug policy */ - struct ext4_mb_history *s_mb_history; - int s_mb_history_cur; - int s_mb_history_max; - int s_mb_history_num; - spinlock_t s_mb_history_lock; - int s_mb_history_filter; - /* stats for buddy allocator */ spinlock_t s_mb_pa_lock; atomic_t s_bal_reqs; /* number of reqs with len > 1 */ @@ -980,6 +1003,9 @@ struct ext4_sb_info { unsigned int s_log_groups_per_flex; struct flex_groups *s_flex_groups; + + /* workqueue for dio unwritten */ + struct workqueue_struct *dio_unwritten_wq; }; static inline struct ext4_sb_info *EXT4_SB(struct super_block *sb) @@ -1397,7 +1423,7 @@ extern int ext4_block_truncate_page(handle_t *handle, struct address_space *mapping, loff_t from); extern int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); extern qsize_t ext4_get_reserved_space(struct inode *inode); - +extern int flush_aio_dio_completed_IO(struct inode *inode); /* ioctl.c */ extern long ext4_ioctl(struct file *, unsigned int, unsigned long); extern long ext4_compat_ioctl(struct file *, unsigned int, unsigned long); @@ -1699,6 +1725,8 @@ extern void ext4_ext_init(struct super_block *); extern void ext4_ext_release(struct super_block *); extern long ext4_fallocate(struct inode *inode, int mode, loff_t offset, loff_t len); +extern int ext4_convert_unwritten_extents(struct inode *inode, loff_t offset, + loff_t len); extern int ext4_get_blocks(handle_t *handle, struct inode *inode, sector_t block, unsigned int max_blocks, struct buffer_head *bh, int flags); |