ext4: skip conversion of uninit extents after direct IO if there isn't any

[safe/jmp/linux-2.6] / fs / ext4 / ext4.h

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index ccb4dbf..8825515 100644 (file)
--- 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
@@ -127,10 +133,11 @@ 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;           /* sync IO or AIO */
+       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 */
@@ -315,6 +322,7 @@ static inline __u32 ext4_mask_flags(umode_t mode, __u32 flags)
 #define EXT4_STATE_NO_EXPAND           0x00000008 /* No space for expansion */
 #define EXT4_STATE_DA_ALLOC_CLOSE      0x00000010 /* Alloc DA blks on close */
 #define EXT4_STATE_EXT_MIGRATE         0x00000020 /* Inode is migrating */
+#define EXT4_STATE_DIO_UNWRITTEN       0x00000040 /* need convert on dio done*/
 
 /* Used to pass group descriptor data when online resize is done */
 struct ext4_new_group_input {
@@ -518,8 +526,8 @@ 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)
@@ -527,7 +535,7 @@ 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)                         \
@@ -690,6 +698,11 @@ 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;
 };
 
 /*
@@ -731,6 +744,7 @@ struct ext4_inode_info {
 #define EXT4_MOUNT_QUOTA               0x80000 /* Some quota option set */
 #define EXT4_MOUNT_USRQUOTA            0x100000 /* "old" user quota */
 #define EXT4_MOUNT_GRPQUOTA            0x200000 /* "old" group quota */
+#define EXT4_MOUNT_JOURNAL_CHECKSUM    0x800000 /* Journal checksums */
 #define EXT4_MOUNT_JOURNAL_ASYNC_COMMIT        0x1000000 /* Journal Async Commit */
 #define EXT4_MOUNT_I_VERSION            0x2000000 /* i_version support */
 #define EXT4_MOUNT_DELALLOC            0x8000000 /* Delalloc support */
@@ -965,14 +979,6 @@ struct ext4_sb_info {
        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 */
@@ -1419,7 +1425,7 @@ 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);