return err;
}
+static void check_fallocated_region(struct inode *inode, sector_t iblock,
+ unsigned long *max_blocks, struct buffer_head *bh_result)
+{
+ struct super_block *sb = inode->i_sb;
+ sector_t last_block, disk_block;
+ const unsigned long blocksize = sb->s_blocksize;
+ const unsigned char blocksize_bits = sb->s_blocksize_bits;
+
+ last_block = (MSDOS_I(inode)->mmu_private + (blocksize - 1))
+ >> blocksize_bits;
+ disk_block = (MSDOS_I(inode)->i_disksize + (blocksize - 1))
+ >> blocksize_bits;
+ if (iblock >= last_block && iblock <= disk_block) {
+ MSDOS_I(inode)->mmu_private += *max_blocks << blocksize_bits;
+ set_buffer_new(bh_result);
+ }
+
+}
+
static inline int __fat_get_block(struct inode *inode, sector_t iblock,
unsigned long *max_blocks,
struct buffer_head *bh_result, int create)
if (err)
return err;
if (phys) {
- map_bh(bh_result, sb, phys);
*max_blocks = min(mapped_blocks, *max_blocks);
+ if (create)
+ check_fallocated_region(inode, iblock, max_blocks,
+ bh_result);
+ map_bh(bh_result, sb, phys);
return 0;
}
if (!create)