[PATCH] fat: cleanup fat_get_block(s)

get_blocks() was removed.  So, this removes it on fat, and will take
advantage of the multi block mapping.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index d301511..e1035a5 100644 (file)
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -50,14 +50,14 @@ static int fat_add_cluster(struct inode *inode)
        return err;
 }
 
-static int __fat_get_blocks(struct inode *inode, sector_t iblock,
-                           unsigned long *max_blocks,
-                           struct buffer_head *bh_result, int create)
+static inline int __fat_get_block(struct inode *inode, sector_t iblock,
+                                 unsigned long *max_blocks,
+                                 struct buffer_head *bh_result, int create)
 {
        struct super_block *sb = inode->i_sb;
        struct msdos_sb_info *sbi = MSDOS_SB(sb);
-       sector_t phys;
        unsigned long mapped_blocks;
+       sector_t phys;
        int err, offset;
 
        err = fat_bmap(inode, iblock, &phys, &mapped_blocks);
@@ -73,7 +73,7 @@ static int __fat_get_blocks(struct inode *inode, sector_t iblock,
 
        if (iblock != MSDOS_I(inode)->mmu_private >> sb->s_blocksize_bits) {
                fat_fs_panic(sb, "corrupted file size (i_pos %lld, %lld)",
-                            MSDOS_I(inode)->i_pos, MSDOS_I(inode)->mmu_private);
+                       MSDOS_I(inode)->i_pos, MSDOS_I(inode)->mmu_private);
                return -EIO;
        }
 
@@ -93,34 +93,29 @@ static int __fat_get_blocks(struct inode *inode, sector_t iblock,
        err = fat_bmap(inode, iblock, &phys, &mapped_blocks);
        if (err)
                return err;
+
        BUG_ON(!phys);
        BUG_ON(*max_blocks != mapped_blocks);
        set_buffer_new(bh_result);
        map_bh(bh_result, sb, phys);
+
        return 0;
 }
 
-static int fat_get_blocks(struct inode *inode, sector_t iblock,
-                         struct buffer_head *bh_result, int create)
+static int fat_get_block(struct inode *inode, sector_t iblock,
+                        struct buffer_head *bh_result, int create)
 {
        struct super_block *sb = inode->i_sb;
-       int err;
        unsigned long max_blocks = bh_result->b_size >> inode->i_blkbits;
+       int err;
 
-       err = __fat_get_blocks(inode, iblock, &max_blocks, bh_result, create);
+       err = __fat_get_block(inode, iblock, &max_blocks, bh_result, create);
        if (err)
                return err;
        bh_result->b_size = max_blocks << sb->s_blocksize_bits;
        return 0;
 }
 
-static int fat_get_block(struct inode *inode, sector_t iblock,
-                        struct buffer_head *bh_result, int create)
-{
-       unsigned long max_blocks = 1;
-       return __fat_get_blocks(inode, iblock, &max_blocks, bh_result, create);
-}
-
 static int fat_writepage(struct page *page, struct writeback_control *wbc)
 {
        return block_write_full_page(page, fat_get_block, wbc);
@@ -188,7 +183,7 @@ static ssize_t fat_direct_IO(int rw, struct kiocb *iocb,
         * condition of fat_get_block() and ->truncate().
         */
        return blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
-                                 offset, nr_segs, fat_get_blocks, NULL);
+                                 offset, nr_segs, fat_get_block, NULL);
 }
 
 static sector_t _fat_bmap(struct address_space *mapping, sector_t block)