static int jfs_direct_IO(int rw, struct file *filp, struct kiobuf *iobuf,
unsigned long blocknr, int blocksize)
{
struct inode * inode = filp->f_dentry->d_inode->i_mapping->host;
return generic_direct_IO(rw, inode, iobuf, blocknr,
blocksize, jfs_get_block);
}
static int blkdev_direct_IO(int rw, struct inode * inode, struct kiobuf * iobuf, unsigned long blocknr, int blocksize)
{
return generic_direct_IO(rw, inode, iobuf, blocknr, blocksize, blkdev_get_block);
}
/*
* NOTE: In spite of direc IO,
* we use page cache for extend_with_zeorfill
*/
ret = extend_with_zerofill(inode,
(u32) old_size, (u32) offset);
if (ret)
goto end_log;
inode->i_size = offset;
set_mmu_private(inode, offset);
zerofilled = TRUE;
}
}
ret = generic_direct_IO(rw, inode, iobuf,
blocknr, blocksize, rfs_get_block);
if (rw == WRITE) {
if (ret == -EINVAL) {
int err;
/*
* free some clusters if only unaligned offset & length
* of iobuf exists which were allocated at direct IO op
*/
err = dealloc_clusters(inode, alloc_clus);
if (!err) {
inode->i_size = old_size;
set_mmu_private(inode, old_size);
}
