1 files changed, 119 insertions, 33 deletions

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 19a4de57128a..e03841d9f30b 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -57,10 +57,13 @@
 #endif
 
 #define EXT4_ERROR_INODE(inode, fmt, a...) \
-        ext4_error_inode(__func__, (inode), (fmt), ## a)
+        ext4_error_inode((inode), __func__, __LINE__, 0, (fmt), ## a)
+
+#define EXT4_ERROR_INODE_BLOCK(inode, block, fmt, a...)                 \
+        ext4_error_inode((inode), __func__, __LINE__, (block), (fmt), ## a)
 
 #define EXT4_ERROR_FILE(file, fmt, a...)        \
-        ext4_error_file(__func__, (file), (fmt), ## a)
+        ext4_error_file(__func__, __LINE__, (file), (fmt), ## a)
 
 /* data type for block offset of block group */
 typedef int ext4_grpblk_t;
@@ -167,13 +170,15 @@ struct mpage_da_data {
 };
 #define EXT4_IO_UNWRITTEN       0x1
 typedef struct ext4_io_end {
-        struct list_head        list;           /* per-file finished AIO list */
+        struct list_head        list;           /* per-file finished IO list */
         struct inode            *inode;         /* file being written to */
         unsigned int            flag;           /* unwritten or not */
         struct page             *page;          /* page struct for buffer write */
         loff_t                  offset;         /* offset in the file */
         ssize_t                 size;           /* size of the extent */
         struct work_struct      work;           /* data work queue */
+        struct kiocb            *iocb;          /* iocb struct for AIO */
+        int                     result;         /* error value for AIO */
 } ext4_io_end_t;
 
 /*
@@ -460,7 +465,7 @@ struct ext4_new_group_data {
 };
 
 /*
- * Flags used by ext4_get_blocks()
+ * Flags used by ext4_map_blocks()
  */
         /* Allocate any needed blocks and/or convert an unitialized
            extent to be an initialized ext4 */
@@ -873,7 +878,6 @@ struct ext4_inode_info {
 #define EXT4_MOUNT_POSIX_ACL            0x08000 /* POSIX Access Control Lists */
 #define EXT4_MOUNT_NO_AUTO_DA_ALLOC     0x10000 /* No auto delalloc mapping */
 #define EXT4_MOUNT_BARRIER              0x20000 /* Use block barriers */
-#define EXT4_MOUNT_NOBH                 0x40000 /* No bufferheads */
 #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 */
@@ -982,7 +986,7 @@ struct ext4_super_block {
         __le32  s_last_orphan;          /* start of list of inodes to delete */
         __le32  s_hash_seed[4];         /* HTREE hash seed */
         __u8    s_def_hash_version;     /* Default hash version to use */
-        __u8    s_reserved_char_pad;
+        __u8    s_jnl_backup_type;
         __le16  s_desc_size;            /* size of group descriptor */
 /*100*/ __le32  s_default_mount_opts;
         __le32  s_first_meta_bg;        /* First metablock block group */
@@ -1000,12 +1004,34 @@ struct ext4_super_block {
         __le64  s_mmp_block;            /* Block for multi-mount protection */
         __le32  s_raid_stripe_width;    /* blocks on all data disks (N*stride)*/
         __u8    s_log_groups_per_flex;  /* FLEX_BG group size */
-        __u8    s_reserved_char_pad2;
+        __u8    s_reserved_char_pad;
         __le16  s_reserved_pad;
         __le64  s_kbytes_written;       /* nr of lifetime kilobytes written */
-        __u32   s_reserved[160];        /* Padding to the end of the block */
+        __le32  s_snapshot_inum;        /* Inode number of active snapshot */
+        __le32  s_snapshot_id;          /* sequential ID of active snapshot */
+        __le64  s_snapshot_r_blocks_count; /* reserved blocks for active
+                                              snapshot's future use */
+        __le32  s_snapshot_list;        /* inode number of the head of the
+                                           on-disk snapshot list */
+#define EXT4_S_ERR_START offsetof(struct ext4_super_block, s_error_count)
+        __le32  s_error_count;          /* number of fs errors */
+        __le32  s_first_error_time;     /* first time an error happened */
+        __le32  s_first_error_ino;      /* inode involved in first error */
+        __le64  s_first_error_block;    /* block involved of first error */
+        __u8    s_first_error_func[32]; /* function where the error happened */
+        __le32  s_first_error_line;     /* line number where error happened */
+        __le32  s_last_error_time;      /* most recent time of an error */
+        __le32  s_last_error_ino;       /* inode involved in last error */
+        __le32  s_last_error_line;      /* line number where error happened */
+        __le64  s_last_error_block;     /* block involved of last error */
+        __u8    s_last_error_func[32];  /* function where the error happened */
+#define EXT4_S_ERR_END offsetof(struct ext4_super_block, s_mount_opts)
+        __u8    s_mount_opts[64];
+        __le32  s_reserved[112];        /* Padding to the end of the block */
 };
 
+#define EXT4_S_ERR_LEN (EXT4_S_ERR_END - EXT4_S_ERR_START)
+
 #ifdef __KERNEL__
 
 /*
@@ -1143,6 +1169,9 @@ struct ext4_sb_info {
 
         /* workqueue for dio unwritten */
         struct workqueue_struct *dio_unwritten_wq;
+
+        /* timer for periodic error stats printing */
+        struct timer_list s_err_report;
 };
 
 static inline struct ext4_sb_info *EXT4_SB(struct super_block *sb)
@@ -1313,6 +1342,10 @@ EXT4_INODE_BIT_FNS(state, state_flags)
 #define EXT4_DEFM_JMODE_DATA    0x0020
 #define EXT4_DEFM_JMODE_ORDERED 0x0040
 #define EXT4_DEFM_JMODE_WBACK   0x0060
+#define EXT4_DEFM_NOBARRIER     0x0100
+#define EXT4_DEFM_BLOCK_VALIDITY 0x0200
+#define EXT4_DEFM_DISCARD       0x0400
+#define EXT4_DEFM_NODELALLOC    0x0800
 
 /*
  * Default journal batch times
@@ -1379,6 +1412,43 @@ struct ext4_dir_entry_2 {
 #define EXT4_MAX_REC_LEN                ((1<<16)-1)
 
 /*
+ * If we ever get support for fs block sizes > page_size, we'll need
+ * to remove the #if statements in the next two functions...
+ */
+static inline unsigned int
+ext4_rec_len_from_disk(__le16 dlen, unsigned blocksize)
+{
+        unsigned len = le16_to_cpu(dlen);
+
+#if (PAGE_CACHE_SIZE >= 65536)
+        if (len == EXT4_MAX_REC_LEN || len == 0)
+                return blocksize;
+        return (len & 65532) | ((len & 3) << 16);
+#else
+        return len;
+#endif
+}
+
+static inline __le16 ext4_rec_len_to_disk(unsigned len, unsigned blocksize)
+{
+        if ((len > blocksize) || (blocksize > (1 << 18)) || (len & 3))
+                BUG();
+#if (PAGE_CACHE_SIZE >= 65536)
+        if (len < 65536)
+                return cpu_to_le16(len);
+        if (len == blocksize) {
+                if (blocksize == 65536)
+                        return cpu_to_le16(EXT4_MAX_REC_LEN);
+                else
+                        return cpu_to_le16(0);
+        }
+        return cpu_to_le16((len & 65532) | ((len >> 16) & 3));
+#else
+        return cpu_to_le16(len);
+#endif
+}
+
+/*
  * Hash Tree Directory indexing
  * (c) Daniel Phillips, 2001
  */
@@ -1510,9 +1580,11 @@ extern unsigned ext4_init_block_bitmap(struct super_block *sb,
                 ext4_init_block_bitmap(sb, NULL, group, desc)
 
 /* dir.c */
-extern int ext4_check_dir_entry(const char *, struct inode *,
-                                struct ext4_dir_entry_2 *,
-                                struct buffer_head *, unsigned int);
+extern int __ext4_check_dir_entry(const char *, unsigned int, struct inode *,
+                                  struct ext4_dir_entry_2 *,
+                                  struct buffer_head *, unsigned int);
+#define ext4_check_dir_entry(dir, de, bh, offset) \
+        __ext4_check_dir_entry(__func__, __LINE__, (dir), (de), (bh), (offset))
 extern int ext4_htree_store_dirent(struct file *dir_file, __u32 hash,
                                     __u32 minor_hash,
                                     struct ext4_dir_entry_2 *dirent);
@@ -1601,8 +1673,6 @@ extern long ext4_compat_ioctl(struct file *, unsigned int, unsigned long);
 extern int ext4_ext_migrate(struct inode *);
 
 /* namei.c */
-extern unsigned int ext4_rec_len_from_disk(__le16 dlen, unsigned blocksize);
-extern __le16 ext4_rec_len_to_disk(unsigned len, unsigned blocksize);
 extern int ext4_orphan_add(handle_t *, struct inode *);
 extern int ext4_orphan_del(handle_t *, struct inode *);
 extern int ext4_htree_fill_tree(struct file *dir_file, __u32 start_hash,
@@ -1616,25 +1686,38 @@ extern int ext4_group_extend(struct super_block *sb,
                                 ext4_fsblk_t n_blocks_count);
 
 /* super.c */
-extern void __ext4_error(struct super_block *, const char *, const char *, ...)
-        __attribute__ ((format (printf, 3, 4)));
-#define ext4_error(sb, message...)      __ext4_error(sb, __func__, ## message)
-extern void ext4_error_inode(const char *, struct inode *, const char *, ...)
-        __attribute__ ((format (printf, 3, 4)));
-extern void ext4_error_file(const char *, struct file *, const char *, ...)
-        __attribute__ ((format (printf, 3, 4)));
-extern void __ext4_std_error(struct super_block *, const char *, int);
-extern void ext4_abort(struct super_block *, const char *, const char *, ...)
-        __attribute__ ((format (printf, 3, 4)));
-extern void __ext4_warning(struct super_block *, const char *,
+extern void __ext4_error(struct super_block *, const char *, unsigned int,
+                         const char *, ...)
+        __attribute__ ((format (printf, 4, 5)));
+#define ext4_error(sb, message...)      __ext4_error(sb, __func__,      \
+                                                     __LINE__, ## message)
+extern void ext4_error_inode(struct inode *, const char *, unsigned int,
+                             ext4_fsblk_t, const char *, ...)
+        __attribute__ ((format (printf, 5, 6)));
+extern void ext4_error_file(struct file *, const char *, unsigned int,
+                            const char *, ...)
+        __attribute__ ((format (printf, 4, 5)));
+extern void __ext4_std_error(struct super_block *, const char *,
+                             unsigned int, int);
+extern void __ext4_abort(struct super_block *, const char *, unsigned int,
+                       const char *, ...)
+        __attribute__ ((format (printf, 4, 5)));
+#define ext4_abort(sb, message...)      __ext4_abort(sb, __func__, \
+                                                       __LINE__, ## message)
+extern void __ext4_warning(struct super_block *, const char *, unsigned int,
                           const char *, ...)
-        __attribute__ ((format (printf, 3, 4)));
-#define ext4_warning(sb, message...)    __ext4_warning(sb, __func__, ## message)
+        __attribute__ ((format (printf, 4, 5)));
+#define ext4_warning(sb, message...)    __ext4_warning(sb, __func__, \
+                                                       __LINE__, ## message)
 extern void ext4_msg(struct super_block *, const char *, const char *, ...)
         __attribute__ ((format (printf, 3, 4)));
-extern void ext4_grp_locked_error(struct super_block *, ext4_group_t,
-                                const char *, const char *, ...)
-        __attribute__ ((format (printf, 4, 5)));
+extern void __ext4_grp_locked_error(const char *, unsigned int, \
+                                    struct super_block *, ext4_group_t, \
+                                    unsigned long, ext4_fsblk_t, \
+                                    const char *, ...)
+        __attribute__ ((format (printf, 7, 8)));
+#define ext4_grp_locked_error(sb, grp, message...) \
+        __ext4_grp_locked_error(__func__, __LINE__, (sb), (grp), ## message)
 extern void ext4_update_dynamic_rev(struct super_block *sb);
 extern int ext4_update_compat_feature(handle_t *handle, struct super_block *sb,
                                         __u32 compat);
@@ -1768,7 +1851,7 @@ static inline unsigned int ext4_flex_bg_size(struct ext4_sb_info *sbi)
 #define ext4_std_error(sb, errno)                               \
 do {                                                            \
         if ((errno))                                            \
-                __ext4_std_error((sb), __func__, (errno));      \
+                __ext4_std_error((sb), __func__, __LINE__, (errno));    \
 } while (0)
 
 #ifdef CONFIG_SMP
@@ -1860,6 +1943,12 @@ static inline void ext4_unlock_group(struct super_block *sb,
         spin_unlock(ext4_group_lock_ptr(sb, group));
 }
 
+static inline void ext4_mark_super_dirty(struct super_block *sb)
+{
+        if (EXT4_SB(sb)->s_journal == NULL)
+                sb->s_dirt =1;
+}
+
 /*
  * Inodes and files operations
  */
@@ -1905,9 +1994,6 @@ extern int ext4_convert_unwritten_extents(struct inode *inode, loff_t offset,
                           ssize_t len);
 extern int ext4_map_blocks(handle_t *handle, struct inode *inode,
                            struct ext4_map_blocks *map, int flags);
-extern int ext4_get_blocks(handle_t *handle, struct inode *inode,
-                           sector_t block, unsigned int max_blocks,
-                           struct buffer_head *bh, int flags);
 extern int ext4_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
                         __u64 start, __u64 len);
 /* move_extent.c */