This patch adds a new data type ext4_inoblk_t to represent
the logical file blocks.

This is the preparatory patch to support large files in ext4
The follow up patch with convert the ext4_inode i_blocks to
represent the number of blocks in file system block size. This
changes makes it possible to have a block number 2**32 -1 which
will result in overflow if the block number is represented by
signed long. This patch convert all the block number to type
ext4_inoblk_t which is typedef to __u32

Signed-off-by: Aneesh Kumar K.V <[EMAIL PROTECTED]>
---
 fs/ext4/extents.c               |  170 ++++++++------------------------------
 fs/ext4/inode.c                 |   25 +++---
 fs/ext4/mballoc.c               |   29 +++----
 fs/ext4/migrate.c               |   24 +++---
 include/linux/ext4_fs.h         |   20 +++--
 include/linux/ext4_fs_extents.h |   25 ++-----
 include/linux/ext4_fs_i.h       |    5 +-
 7 files changed, 96 insertions(+), 202 deletions(-)

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 0ea6122..c83c2ff 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -144,7 +144,7 @@ static int ext4_ext_dirty(handle_t *handle, struct inode 
*inode,
 
 static ext4_fsblk_t ext4_ext_find_goal(struct inode *inode,
                              struct ext4_ext_path *path,
-                             ext4_fsblk_t block)
+                             ext4_inoblk_t block)
 {
        struct ext4_inode_info *ei = EXT4_I(inode);
        ext4_fsblk_t bg_start;
@@ -367,13 +367,14 @@ static void ext4_ext_drop_refs(struct ext4_ext_path *path)
  * the header must be checked before calling this
  */
 static void
-ext4_ext_binsearch_idx(struct inode *inode, struct ext4_ext_path *path, int 
block)
+ext4_ext_binsearch_idx(struct inode *inode,
+                       struct ext4_ext_path *path, ext4_inoblk_t block)
 {
        struct ext4_extent_header *eh = path->p_hdr;
        struct ext4_extent_idx *r, *l, *m;
 
 
-       ext_debug("binsearch for %d(idx):  ", block);
+       ext_debug("binsearch for %lu(idx):  ", (unsigned long)block);
 
        l = EXT_FIRST_INDEX(eh) + 1;
        r = EXT_LAST_INDEX(eh);
@@ -425,7 +426,8 @@ ext4_ext_binsearch_idx(struct inode *inode, struct 
ext4_ext_path *path, int bloc
  * the header must be checked before calling this
  */
 static void
-ext4_ext_binsearch(struct inode *inode, struct ext4_ext_path *path, int block)
+ext4_ext_binsearch(struct inode *inode,
+               struct ext4_ext_path *path, ext4_inoblk_t block)
 {
        struct ext4_extent_header *eh = path->p_hdr;
        struct ext4_extent *r, *l, *m;
@@ -438,7 +440,7 @@ ext4_ext_binsearch(struct inode *inode, struct 
ext4_ext_path *path, int block)
                return;
        }
 
-       ext_debug("binsearch for %d:  ", block);
+       ext_debug("binsearch for %lu:  ", (unsigned long)block);
 
        l = EXT_FIRST_EXTENT(eh) + 1;
        r = EXT_LAST_EXTENT(eh);
@@ -494,7 +496,8 @@ int ext4_ext_tree_init(handle_t *handle, struct inode 
*inode)
 }
 
 struct ext4_ext_path *
-ext4_ext_find_extent(struct inode *inode, int block, struct ext4_ext_path 
*path)
+ext4_ext_find_extent(struct inode *inode, ext4_inoblk_t block,
+                                       struct ext4_ext_path *path)
 {
        struct ext4_extent_header *eh;
        struct buffer_head *bh;
@@ -979,8 +982,8 @@ repeat:
                /* refill path */
                ext4_ext_drop_refs(path);
                path = ext4_ext_find_extent(inode,
-                                           le32_to_cpu(newext->ee_block),
-                                           path);
+                                   (ext4_inoblk_t 
)le32_to_cpu(newext->ee_block),
+                                   path);
                if (IS_ERR(path))
                        err = PTR_ERR(path);
        } else {
@@ -992,8 +995,8 @@ repeat:
                /* refill path */
                ext4_ext_drop_refs(path);
                path = ext4_ext_find_extent(inode,
-                                           le32_to_cpu(newext->ee_block),
-                                           path);
+                                  (ext4_inoblk_t)le32_to_cpu(newext->ee_block),
+                                   path);
                if (IS_ERR(path)) {
                        err = PTR_ERR(path);
                        goto out;
@@ -1023,7 +1026,7 @@ out:
  */
 int
 ext4_ext_search_left(struct inode *inode, struct ext4_ext_path *path,
-                       ext4_fsblk_t *logical, ext4_fsblk_t *phys)
+                       ext4_inoblk_t *logical, ext4_fsblk_t *phys)
 {
        struct ext4_extent_idx *ix;
        struct ext4_extent *ex;
@@ -1066,7 +1069,7 @@ ext4_ext_search_left(struct inode *inode, struct 
ext4_ext_path *path,
  */
 int
 ext4_ext_search_right(struct inode *inode, struct ext4_ext_path *path,
-                       ext4_fsblk_t *logical, ext4_fsblk_t *phys)
+                       ext4_inoblk_t *logical, ext4_fsblk_t *phys)
 {
        struct buffer_head *bh = NULL;
        struct ext4_extent_header *eh;
@@ -1196,7 +1199,7 @@ ext4_ext_next_allocated_block(struct ext4_ext_path *path)
  * ext4_ext_next_leaf_block:
  * returns first allocated block from next leaf or EXT_MAX_BLOCK
  */
-static unsigned ext4_ext_next_leaf_block(struct inode *inode,
+static ext4_inoblk_t ext4_ext_next_leaf_block(struct inode *inode,
                                        struct ext4_ext_path *path)
 {
        int depth;
@@ -1214,7 +1217,7 @@ static unsigned ext4_ext_next_leaf_block(struct inode 
*inode,
        while (depth >= 0) {
                if (path[depth].p_idx !=
                                EXT_LAST_INDEX(path[depth].p_hdr))
-                 return le32_to_cpu(path[depth].p_idx[1].ei_block);
+                 return 
(ext4_inoblk_t)le32_to_cpu(path[depth].p_idx[1].ei_block);
                depth--;
        }
 
@@ -1432,7 +1435,8 @@ int ext4_ext_insert_extent(handle_t *handle, struct inode 
*inode,
        struct ext4_extent *ex, *fex;
        struct ext4_extent *nearex; /* nearest extent */
        struct ext4_ext_path *npath = NULL;
-       int depth, len, err, next;
+       int depth, len, err;
+       ext4_inoblk_t next;
        unsigned uninitialized = 0;
 
        BUG_ON(ext4_ext_get_actual_len(newext) == 0);
@@ -1577,114 +1581,8 @@ cleanup:
        return err;
 }
 
-int ext4_ext_walk_space(struct inode *inode, unsigned long block,
-                       unsigned long num, ext_prepare_callback func,
-                       void *cbdata)
-{
-       struct ext4_ext_path *path = NULL;
-       struct ext4_ext_cache cbex;
-       struct ext4_extent *ex;
-       unsigned long next, start = 0, end = 0;
-       unsigned long last = block + num;
-       int depth, exists, err = 0;
-
-       BUG_ON(func == NULL);
-       BUG_ON(inode == NULL);
-
-       while (block < last && block != EXT_MAX_BLOCK) {
-               num = last - block;
-               /* find extent for this block */
-               path = ext4_ext_find_extent(inode, block, path);
-               if (IS_ERR(path)) {
-                       err = PTR_ERR(path);
-                       path = NULL;
-                       break;
-               }
-
-               depth = ext_depth(inode);
-               BUG_ON(path[depth].p_hdr == NULL);
-               ex = path[depth].p_ext;
-               next = ext4_ext_next_allocated_block(path);
-
-               exists = 0;
-               if (!ex) {
-                       /* there is no extent yet, so try to allocate
-                        * all requested space */
-                       start = block;
-                       end = block + num;
-               } else if (le32_to_cpu(ex->ee_block) > block) {
-                       /* need to allocate space before found extent */
-                       start = block;
-                       end = le32_to_cpu(ex->ee_block);
-                       if (block + num < end)
-                               end = block + num;
-               } else if (block >= le32_to_cpu(ex->ee_block)
-                                       + ext4_ext_get_actual_len(ex)) {
-                       /* need to allocate space after found extent */
-                       start = block;
-                       end = block + num;
-                       if (end >= next)
-                               end = next;
-               } else if (block >= le32_to_cpu(ex->ee_block)) {
-                       /*
-                        * some part of requested space is covered
-                        * by found extent
-                        */
-                       start = block;
-                       end = le32_to_cpu(ex->ee_block)
-                               + ext4_ext_get_actual_len(ex);
-                       if (block + num < end)
-                               end = block + num;
-                       exists = 1;
-               } else {
-                       BUG();
-               }
-               BUG_ON(end <= start);
-
-               if (!exists) {
-                       cbex.ec_block = start;
-                       cbex.ec_len = end - start;
-                       cbex.ec_start = 0;
-                       cbex.ec_type = EXT4_EXT_CACHE_GAP;
-               } else {
-                       cbex.ec_block = le32_to_cpu(ex->ee_block);
-                       cbex.ec_len = ext4_ext_get_actual_len(ex);
-                       cbex.ec_start = ext_pblock(ex);
-                       cbex.ec_type = EXT4_EXT_CACHE_EXTENT;
-               }
-
-               BUG_ON(cbex.ec_len == 0);
-               err = func(inode, path, &cbex, cbdata);
-               ext4_ext_drop_refs(path);
-
-               if (err < 0)
-                       break;
-               if (err == EXT_REPEAT)
-                       continue;
-               else if (err == EXT_BREAK) {
-                       err = 0;
-                       break;
-               }
-
-               if (ext_depth(inode) != depth) {
-                       /* depth was changed. we have to realloc path */
-                       kfree(path);
-                       path = NULL;
-               }
-
-               block = cbex.ec_block + cbex.ec_len;
-       }
-
-       if (path) {
-               ext4_ext_drop_refs(path);
-               kfree(path);
-       }
-
-       return err;
-}
-
 static void
-ext4_ext_put_in_cache(struct inode *inode, __u32 block,
+ext4_ext_put_in_cache(struct inode *inode, ext4_inoblk_t block,
                        __u32 len, ext4_fsblk_t start, int type)
 {
        struct ext4_ext_cache *cex;
@@ -1703,10 +1601,11 @@ ext4_ext_put_in_cache(struct inode *inode, __u32 block,
  */
 static void
 ext4_ext_put_gap_in_cache(struct inode *inode, struct ext4_ext_path *path,
-                               unsigned long block)
+                               ext4_inoblk_t block)
 {
        int depth = ext_depth(inode);
-       unsigned long lblock, len;
+       unsigned long len;
+       ext4_inoblk_t lblock;
        struct ext4_extent *ex;
 
        ex = path[depth].p_ext;
@@ -1743,7 +1642,7 @@ ext4_ext_put_gap_in_cache(struct inode *inode, struct 
ext4_ext_path *path,
 }
 
 static int
-ext4_ext_in_cache(struct inode *inode, unsigned long block,
+ext4_ext_in_cache(struct inode *inode, ext4_inoblk_t block,
                        struct ext4_extent *ex)
 {
        struct ext4_ext_cache *cex;
@@ -2238,9 +2137,9 @@ void ext4_ext_release(struct super_block *sb)
  *   b> Splits in two extents: Write is happening at either end of the extent
  *   c> Splits in three extents: Somone is writing in middle of the extent
  */
-int ext4_ext_convert_to_initialized(handle_t *handle, struct inode *inode,
+static int ext4_ext_convert_to_initialized(handle_t *handle, struct inode 
*inode,
                                        struct ext4_ext_path *path,
-                                       ext4_fsblk_t iblock,
+                                       ext4_inoblk_t iblock,
                                        unsigned long max_blocks)
 {
        struct ext4_extent *ex, newex;
@@ -2374,7 +2273,7 @@ out:
  * mutex_lock(&EXT4_I(inode)->truncate_mutex);
  */
 int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
-                       ext4_fsblk_t iblock,
+                       ext4_inoblk_t iblock,
                        unsigned long max_blocks, struct buffer_head *bh_result,
                        int create, int extend_disksize)
 {
@@ -2387,8 +2286,9 @@ int ext4_ext_get_blocks(handle_t *handle, struct inode 
*inode,
        struct ext4_allocation_request ar;
 
        __clear_bit(BH_New, &bh_result->b_state);
-       ext_debug("blocks %d/%lu requested for inode %u\n", (int) iblock,
-                       max_blocks, (unsigned) inode->i_ino);
+       ext_debug("blocks %lu/%lu requested for inode %u\n",
+                       (unsigned long )iblock, max_blocks,
+                       (unsigned) inode->i_ino);
 
        /* check in cache */
        goal = ext4_ext_in_cache(inode, iblock, &newex);
@@ -2436,7 +2336,7 @@ int ext4_ext_get_blocks(handle_t *handle, struct inode 
*inode,
 
        ex = path[depth].p_ext;
        if (ex) {
-               unsigned long ee_block = le32_to_cpu(ex->ee_block);
+               ext4_inoblk_t ee_block = le32_to_cpu(ex->ee_block);
                ext4_fsblk_t ee_start = ext_pblock(ex);
                unsigned short ee_len;
 
@@ -2686,7 +2586,8 @@ int ext4_ext_writepage_trans_blocks(struct inode *inode, 
int num)
 long ext4_fallocate(struct inode *inode, int mode, loff_t offset, loff_t len)
 {
        handle_t *handle;
-       ext4_fsblk_t block, max_blocks;
+       ext4_inoblk_t block;
+       unsigned long max_blocks;
        ext4_fsblk_t nblocks = 0;
        int ret = 0;
        int ret2 = 0;
@@ -2731,8 +2632,9 @@ retry:
                if (!ret) {
                        ext4_error(inode->i_sb, "ext4_fallocate",
                                   "ext4_ext_get_blocks returned 0! inode#%lu"
-                                  ", block=%llu, max_blocks=%llu",
-                                  inode->i_ino, block, max_blocks);
+                                  ", block=%lu, max_blocks=%lu",
+                                  inode->i_ino, (unsigned long)block,
+                                  (unsigned long)max_blocks);
                        ret = -EIO;
                        ext4_mark_inode_dirty(handle, inode);
                        ret2 = ext4_journal_stop(handle);
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index de5619f..635b5dc 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -277,7 +277,8 @@ static inline void add_chain(Indirect *p, struct 
buffer_head *bh, __le32 *v)
  */
 
 static int ext4_block_to_path(struct inode *inode,
-                       long i_block, int offsets[4], int *boundary)
+                       ext4_inoblk_t i_block,
+                       ext4_inoblk_t offsets[4], int *boundary)
 {
        int ptrs = EXT4_ADDR_PER_BLOCK(inode->i_sb);
        int ptrs_bits = EXT4_ADDR_PER_BLOCK_BITS(inode->i_sb);
@@ -345,7 +346,8 @@ static int ext4_block_to_path(struct inode *inode,
  *      Need to be called with
  *      mutex_lock(&EXT4_I(inode)->truncate_mutex)
  */
-static Indirect *ext4_get_branch(struct inode *inode, int depth, int *offsets,
+static Indirect *ext4_get_branch(struct inode *inode, int depth,
+                                ext4_inoblk_t  *offsets,
                                 Indirect chain[4], int *err)
 {
        struct super_block *sb = inode->i_sb;
@@ -434,7 +436,7 @@ static ext4_fsblk_t ext4_find_near(struct inode *inode, 
Indirect *ind)
  *     stores it in [EMAIL PROTECTED] and returns zero.
  */
 
-static ext4_fsblk_t ext4_find_goal(struct inode *inode, long block,
+static ext4_fsblk_t ext4_find_goal(struct inode *inode, ext4_inoblk_t block,
                Indirect chain[4], Indirect *partial)
 {
        struct ext4_block_alloc_info *block_i;
@@ -579,7 +581,7 @@ failed_out:
  */
 static int ext4_alloc_branch(handle_t *handle, struct inode *inode,
                        int indirect_blks, int *blks, ext4_fsblk_t goal,
-                       int *offsets, Indirect *branch)
+                       ext4_inoblk_t *offsets, Indirect *branch)
 {
        int blocksize = inode->i_sb->s_blocksize;
        int i, n = 0;
@@ -669,7 +671,7 @@ failed:
  * chain to new block and return 0.
  */
 static int ext4_splice_branch(handle_t *handle, struct inode *inode,
-                       long block, Indirect *where, int num, int blks)
+                       ext4_inoblk_t block, Indirect *where, int num, int blks)
 {
        int i;
        int err = 0;
@@ -777,12 +779,12 @@ err_out:
  * mutex_lock(&EXT4_I(inode)->truncate_mutex)
  */
 int ext4_get_blocks_handle(handle_t *handle, struct inode *inode,
-               sector_t iblock, unsigned long maxblocks,
+               ext4_inoblk_t iblock, unsigned long maxblocks,
                struct buffer_head *bh_result,
                int create, int extend_disksize)
 {
        int err = -EIO;
-       int offsets[4];
+       ext4_inoblk_t offsets[4];
        Indirect chain[4];
        Indirect *partial;
        ext4_fsblk_t goal;
@@ -796,7 +798,8 @@ int ext4_get_blocks_handle(handle_t *handle, struct inode 
*inode,
 
        J_ASSERT(!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL));
        J_ASSERT(handle != NULL || create == 0);
-       depth = ext4_block_to_path(inode,iblock,offsets,&blocks_to_boundary);
+       depth = ext4_block_to_path(inode, iblock, offsets,
+                                       &blocks_to_boundary);
 
        if (depth == 0)
                goto out;
@@ -2005,7 +2008,7 @@ static inline int all_zeroes(__le32 *p, __le32 *q)
  *                     (no partially truncated stuff there).  */
 
 static Indirect *ext4_find_shared(struct inode *inode, int depth,
-                       int offsets[4], Indirect chain[4], __le32 *top)
+                       ext4_inoblk_t offsets[4], Indirect chain[4], __le32 
*top)
 {
        Indirect *partial, *p;
        int k, err;
@@ -2330,12 +2333,12 @@ void ext4_truncate(struct inode *inode)
        __le32 *i_data = ei->i_data;
        int addr_per_block = EXT4_ADDR_PER_BLOCK(inode->i_sb);
        struct address_space *mapping = inode->i_mapping;
-       int offsets[4];
+       ext4_inoblk_t offsets[4];
        Indirect chain[4];
        Indirect *partial;
        __le32 nr = 0;
        int n;
-       long last_block;
+       ext4_inoblk_t last_block;
        unsigned blocksize = inode->i_sb->s_blocksize;
        struct page *page;
 
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 79a3530..f95e667 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -349,7 +349,7 @@ struct ext4_prealloc_space {
        atomic_t                pa_count;
        unsigned                pa_deleted;
        ext4_fsblk_t            pa_pstart;      /* phys. block */
-       unsigned long           pa_lstart;      /* log. block */
+       ext4_inoblk_t           pa_lstart;      /* log. block */
        unsigned short          pa_len;         /* len of preallocated chunk */
        unsigned short          pa_free;        /* how many blocks are free */
        unsigned short          pa_linear;      /* consumed in one direction
@@ -360,7 +360,7 @@ struct ext4_prealloc_space {
 
 
 struct ext4_free_extent {
-       unsigned long fe_logical;
+       ext4_inoblk_t fe_logical;
        ext4_grpblk_t fe_start;
        unsigned long fe_group;
        unsigned long fe_len;
@@ -2058,13 +2058,13 @@ static int ext4_mb_seq_history_show(struct seq_file 
*seq, void *v)
                        "%-5u %-5s %-5u %-6u\n";
                sprintf(buf2, "%lu/%d/[EMAIL PROTECTED]", hs->result.fe_group,
                        hs->result.fe_start, hs->result.fe_len,
-                       hs->result.fe_logical);
+                       (unsigned long)hs->result.fe_logical);
                sprintf(buf, "%lu/%d/[EMAIL PROTECTED]", hs->orig.fe_group,
                        hs->orig.fe_start, hs->orig.fe_len,
-                       hs->orig.fe_logical);
+                       (unsigned long)hs->orig.fe_logical);
                sprintf(buf3, "%lu/%d/[EMAIL PROTECTED]", hs->goal.fe_group,
                        hs->goal.fe_start, hs->goal.fe_len,
-                       hs->goal.fe_logical);
+                       (unsigned long)hs->goal.fe_logical);
                seq_printf(seq, fmt, hs->pid, hs->ino, buf, buf3, buf2,
                                hs->found, hs->groups, hs->cr, hs->flags,
                                hs->merged ? "M" : "", hs->tail,
@@ -2073,10 +2073,10 @@ static int ext4_mb_seq_history_show(struct seq_file 
*seq, void *v)
                fmt = "%-5u %-8u %-23s %-23s %-23s\n";
                sprintf(buf2, "%lu/%d/[EMAIL PROTECTED]", hs->result.fe_group,
                        hs->result.fe_start, hs->result.fe_len,
-                       hs->result.fe_logical);
+                       (unsigned long)hs->result.fe_logical);
                sprintf(buf, "%lu/%d/[EMAIL PROTECTED]", hs->orig.fe_group,
                        hs->orig.fe_start, hs->orig.fe_len,
-                       hs->orig.fe_logical);
+                       (unsigned long)hs->orig.fe_logical);
                seq_printf(seq, fmt, hs->pid, hs->ino, buf, "", buf2);
        } else if (hs->op == EXT4_MB_HISTORY_DISCARD) {
                sprintf(buf2, "%lu/%d/%lu", hs->result.fe_group,
@@ -3067,17 +3067,14 @@ static void ext4_mb_normalize_group_request(struct 
ext4_allocation_context *ac)
 static void ext4_mb_normalize_request(struct ext4_allocation_context *ac,
                                struct ext4_allocation_request *ar)
 {
+       unsigned long wind;
+       int bsbits, i;
+       ext4_inoblk_t end;
+       struct list_head *cur;
+       loff_t size, orig_size;
+       ext4_inoblk_t start, orig_start;
        struct ext4_inode_info *ei = EXT4_I(ac->ac_inode);
        struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb);
-       loff_t start;
-       loff_t end;
-       loff_t size;
-       loff_t orig_size;
-       loff_t orig_start;
-       loff_t wind;
-       struct list_head *cur;
-       int bsbits;
-       int i;
 
        /* do normalize only data requests, metadata requests
           do not need preallocation */
diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c
index 3a306b8..ec1b2ee 100644
--- a/fs/ext4/migrate.c
+++ b/fs/ext4/migrate.c
@@ -17,7 +17,7 @@
 #include <linux/ext4_fs_extents.h>
 
 struct list_blocks_struct {
-       int first_block, last_block;
+       ext4_inoblk_t first_block, last_block;
        ext4_fsblk_t first_pblock, last_pblock;
 };
 
@@ -85,7 +85,7 @@ err_out:
        return retval;
 }
 static int update_extent_range(handle_t *handle, struct inode *inode,
-                               ext4_fsblk_t pblock, int blk_num,
+                               ext4_fsblk_t pblock, ext4_inoblk_t blk_num,
                                struct list_blocks_struct *lb)
 {
        int retval;
@@ -112,13 +112,13 @@ static int update_extent_range(handle_t *handle, struct 
inode *inode,
 }
 
 static int update_ind_extent_range(handle_t *handle, struct inode *inode,
-                                       ext4_fsblk_t pblock, int *blk_nump,
-                                       struct list_blocks_struct *lb)
+                                  ext4_fsblk_t pblock, ext4_inoblk_t *blk_nump,
+                                  struct list_blocks_struct *lb)
 {
        struct buffer_head *bh;
        __le32 *i_data;
        int i, retval = 0;
-       int blk_count = *blk_nump;
+       ext4_inoblk_t blk_count = *blk_nump;
        unsigned long max_entries = inode->i_sb->s_blocksize >> 2;
 
        if (!pblock) {
@@ -150,13 +150,13 @@ static int update_ind_extent_range(handle_t *handle, 
struct inode *inode,
 
 }
 static int update_dind_extent_range(handle_t *handle, struct inode *inode,
-                                       ext4_fsblk_t pblock, int *blk_nump,
-                                       struct list_blocks_struct *lb)
+                                   ext4_fsblk_t pblock, ext4_inoblk_t 
*blk_nump,
+                                   struct list_blocks_struct *lb)
 {
        struct buffer_head *bh;
        __le32 *i_data;
        int i, retval = 0;
-       int blk_count = *blk_nump;
+       ext4_inoblk_t blk_count = *blk_nump;
        unsigned long max_entries = inode->i_sb->s_blocksize >> 2;
 
        if (!pblock) {
@@ -191,13 +191,13 @@ static int update_dind_extent_range(handle_t *handle, 
struct inode *inode,
 
 }
 static int update_tind_extent_range(handle_t *handle, struct inode *inode,
-                                       ext4_fsblk_t pblock, int *blk_nump,
-                                       struct list_blocks_struct *lb)
+                                    ext4_fsblk_t pblock, ext4_inoblk_t 
*blk_nump,
+                                    struct list_blocks_struct *lb)
 {
        struct buffer_head *bh;
        __le32 *i_data;
        int i, retval = 0;
-       int blk_count = *blk_nump;
+       ext4_inoblk_t blk_count = *blk_nump;
        unsigned long max_entries = inode->i_sb->s_blocksize >> 2;
 
        if (!pblock) {
@@ -445,7 +445,7 @@ int ext4_ext_migrate(struct inode * inode, struct file * 
filp,
        handle_t *handle;
        int retval = 0, i;
        __le32 *i_data;
-       int blk_count = 0;
+       ext4_inoblk_t blk_count = 0;
        struct ext4_inode_info *ei;
        struct inode *tmp_inode = NULL;
        struct list_blocks_struct lb;
diff --git a/include/linux/ext4_fs.h b/include/linux/ext4_fs.h
index 6a0909f..74a5def 100644
--- a/include/linux/ext4_fs.h
+++ b/include/linux/ext4_fs.h
@@ -68,11 +68,11 @@
 
 struct ext4_allocation_request {
        struct inode *inode;    /* target inode for block we're allocating */
-       ext4_fsblk_t logical;   /* logical block in target inode */
+       ext4_inoblk_t logical;  /* logical block in target inode */
        ext4_fsblk_t goal;      /* phys. target (a hint) */
-       ext4_fsblk_t lleft;     /* the closest logical allocated block to the 
left */
+       ext4_inoblk_t lleft;    /* the closest logical allocated block to the 
left */
        ext4_fsblk_t pleft;     /* phys. block for ^^^ */
-       ext4_fsblk_t lright;    /* the closest logical allocated block to the 
right */
+       ext4_inoblk_t lright;   /* the closest logical allocated block to the 
right */
        ext4_fsblk_t pright;    /* phys. block for ^^^ */
        unsigned long len;      /* how many blocks we want to allocate */
        unsigned long flags;    /* flags. see above EXT4_MB_HINT_* */
@@ -966,7 +966,7 @@ int ext4_forget(handle_t *handle, int is_metadata, struct 
inode *inode,
 struct buffer_head * ext4_getblk (handle_t *, struct inode *, long, int, int 
*);
 struct buffer_head * ext4_bread (handle_t *, struct inode *, int, int, int *);
 int ext4_get_blocks_handle(handle_t *handle, struct inode *inode,
-       sector_t iblock, unsigned long maxblocks, struct buffer_head *bh_result,
+       ext4_inoblk_t iblock, unsigned long maxblocks, struct buffer_head 
*bh_result,
        int create, int extend_disksize);
 
 extern void ext4_read_inode (struct inode *);
@@ -1099,7 +1099,7 @@ extern const struct inode_operations 
ext4_fast_symlink_inode_operations;
 extern int ext4_ext_tree_init(handle_t *handle, struct inode *);
 extern int ext4_ext_writepage_trans_blocks(struct inode *, int);
 extern int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
-                       ext4_fsblk_t iblock,
+                       ext4_inoblk_t iblock,
                        unsigned long max_blocks, struct buffer_head *bh_result,
                        int create, int extend_disksize);
 extern void ext4_ext_truncate(struct inode *, struct page *);
@@ -1115,11 +1115,13 @@ ext4_get_blocks_wrap(handle_t *handle, struct inode 
*inode, sector_t block,
        int retval;
        mutex_lock(&EXT4_I(inode)->truncate_mutex);
        if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL) {
-               retval = ext4_ext_get_blocks(handle, inode, block, max_blocks,
-                                       bh, create, extend_disksize);
+               retval = ext4_ext_get_blocks(handle, inode,
+                                               (ext4_inoblk_t)block, 
max_blocks,
+                                               bh, create, extend_disksize);
        } else {
-               retval = ext4_get_blocks_handle(handle, inode, block, 
max_blocks,
-                                       bh, create, extend_disksize);
+               retval = ext4_get_blocks_handle(handle, inode,
+                                               (ext4_inoblk_t)block, 
max_blocks,
+                                               bh, create, extend_disksize);
        }
        mutex_unlock(&EXT4_I(inode)->truncate_mutex);
 
diff --git a/include/linux/ext4_fs_extents.h b/include/linux/ext4_fs_extents.h
index 149fd4b..9c9cf10 100644
--- a/include/linux/ext4_fs_extents.h
+++ b/include/linux/ext4_fs_extents.h
@@ -124,20 +124,6 @@ struct ext4_ext_path {
 #define EXT4_EXT_CACHE_GAP     1
 #define EXT4_EXT_CACHE_EXTENT  2
 
-/*
- * to be called by ext4_ext_walk_space()
- * negative retcode - error
- * positive retcode - signal for ext4_ext_walk_space(), see below
- * callback must return valid extent (passed or newly created)
- */
-typedef int (*ext_prepare_callback)(struct inode *, struct ext4_ext_path *,
-                                       struct ext4_ext_cache *,
-                                       void *);
-
-#define EXT_CONTINUE   0
-#define EXT_BREAK      1
-#define EXT_REPEAT     2
-
 
 #define EXT_MAX_BLOCK  0xffffffff
 
@@ -233,10 +219,11 @@ extern int ext4_ext_try_to_merge(struct inode *inode,
                                 struct ext4_extent *);
 extern unsigned int ext4_ext_check_overlap(struct inode *, struct ext4_extent 
*, struct ext4_ext_path *);
 extern int ext4_ext_insert_extent(handle_t *, struct inode *, struct 
ext4_ext_path *, struct ext4_extent *);
-extern int ext4_ext_walk_space(struct inode *, unsigned long, unsigned long, 
ext_prepare_callback, void *);
-extern struct ext4_ext_path * ext4_ext_find_extent(struct inode *, int, struct 
ext4_ext_path *);
-
-extern int ext4_ext_search_left(struct inode *, struct ext4_ext_path *, 
ext4_fsblk_t *, ext4_fsblk_t *);
-extern int ext4_ext_search_right(struct inode *, struct ext4_ext_path *, 
ext4_fsblk_t *, ext4_fsblk_t *);
+extern struct ext4_ext_path * ext4_ext_find_extent(struct inode *, 
ext4_inoblk_t,
+                                                       struct ext4_ext_path *);
+extern int ext4_ext_search_left(struct inode *, struct ext4_ext_path *,
+                                       ext4_inoblk_t *, ext4_fsblk_t *);
+extern int ext4_ext_search_right(struct inode *, struct ext4_ext_path *,
+                                       ext4_inoblk_t *, ext4_fsblk_t *);
 #endif /* _LINUX_EXT4_EXTENTS */
 
diff --git a/include/linux/ext4_fs_i.h b/include/linux/ext4_fs_i.h
index 2317242..5f136ba 100644
--- a/include/linux/ext4_fs_i.h
+++ b/include/linux/ext4_fs_i.h
@@ -27,6 +27,9 @@ typedef int ext4_grpblk_t;
 /* data type for filesystem-wide blocks number */
 typedef unsigned long long ext4_fsblk_t;
 
+/* data type for inode block number */
+typedef __u32 ext4_inoblk_t;
+
 struct ext4_reserve_window {
        ext4_fsblk_t    _rsv_start;     /* First byte reserved */
        ext4_fsblk_t    _rsv_end;       /* Last byte reserved or 0 */
@@ -67,7 +70,7 @@ struct ext4_block_alloc_info {
  */
 struct ext4_ext_cache {
        ext4_fsblk_t    ec_start;
-       __u32           ec_block;
+       ext4_inoblk_t   ec_block;
        __u32           ec_len; /* must be 32bit to return holes */
        __u32           ec_type;
 };
-- 
1.5.3.4.206.g58ba4-dirty

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