static pgoff_t dax_iomap_pgoff(const struct iomap *iomap, loff_t pos)
{
- phys_addr_t paddr = iomap->addr + (pos & PAGE_MASK) - iomap->offset;
-
- if (iomap->bdev)
- paddr += (get_start_sect(iomap->bdev) << SECTOR_SHIFT);
- return PHYS_PFN(paddr);
+ return PHYS_PFN(iomap->addr + (pos & PAGE_MASK) - iomap->offset);
}
static int copy_cow_page_dax(struct vm_fault *vmf, const struct iomap_iter *iter)
/* primary device by default */
map->m_bdev = sb->s_bdev;
map->m_daxdev = EROFS_SB(sb)->dax_dev;
+ map->m_dax_part_off = EROFS_SB(sb)->dax_part_off;
if (map->m_deviceid) {
down_read(&devs->rwsem);
}
map->m_bdev = dif->bdev;
map->m_daxdev = dif->dax_dev;
+ map->m_dax_part_off = dif->dax_part_off;
up_read(&devs->rwsem);
} else if (devs->extra_devices) {
down_read(&devs->rwsem);
map->m_pa -= startoff;
map->m_bdev = dif->bdev;
map->m_daxdev = dif->dax_dev;
+ map->m_dax_part_off = dif->dax_part_off;
break;
}
}
if (ret)
return ret;
- iomap->bdev = mdev.m_bdev;
- iomap->dax_dev = mdev.m_daxdev;
iomap->offset = map.m_la;
+ if (flags & IOMAP_DAX) {
+ iomap->dax_dev = mdev.m_daxdev;
+ iomap->offset += mdev.m_dax_part_off;
+ } else {
+ iomap->bdev = mdev.m_bdev;
+ }
iomap->length = map.m_llen;
iomap->flags = 0;
iomap->private = NULL;
struct erofs_map_dev {
struct block_device *m_bdev;
struct dax_device *m_daxdev;
+ u64 m_dax_part_off;
erofs_off_t m_pa;
unsigned int m_deviceid;
return ret;
iomap->flags = 0;
- iomap->bdev = inode->i_sb->s_bdev;
iomap->offset = (u64)first_block << blkbits;
- iomap->dax_dev = sbi->s_daxdev;
+ if (flags & IOMAP_DAX)
+ iomap->dax_dev = sbi->s_daxdev;
+ else
+ iomap->bdev = inode->i_sb->s_bdev;
if (ret == 0) {
iomap->type = IOMAP_HOLE;
} else {
iomap->type = IOMAP_MAPPED;
iomap->addr = (u64)bno << blkbits;
+ if (flags & IOMAP_DAX)
+ iomap->addr += sbi->s_dax_part_off;
iomap->length = (u64)ret << blkbits;
iomap->flags |= IOMAP_F_MERGED;
}
static void ext4_set_iomap(struct inode *inode, struct iomap *iomap,
struct ext4_map_blocks *map, loff_t offset,
- loff_t length)
+ loff_t length, unsigned int flags)
{
u8 blkbits = inode->i_blkbits;
if (map->m_flags & EXT4_MAP_NEW)
iomap->flags |= IOMAP_F_NEW;
- iomap->bdev = inode->i_sb->s_bdev;
- iomap->dax_dev = EXT4_SB(inode->i_sb)->s_daxdev;
+ if (flags & IOMAP_DAX)
+ iomap->dax_dev = EXT4_SB(inode->i_sb)->s_daxdev;
+ else
+ iomap->bdev = inode->i_sb->s_bdev;
iomap->offset = (u64) map->m_lblk << blkbits;
iomap->length = (u64) map->m_len << blkbits;
if (map->m_flags & EXT4_MAP_UNWRITTEN) {
iomap->type = IOMAP_UNWRITTEN;
iomap->addr = (u64) map->m_pblk << blkbits;
+ if (flags & IOMAP_DAX)
+ iomap->addr += EXT4_SB(inode->i_sb)->s_dax_part_off;
} else if (map->m_flags & EXT4_MAP_MAPPED) {
iomap->type = IOMAP_MAPPED;
iomap->addr = (u64) map->m_pblk << blkbits;
+ if (flags & IOMAP_DAX)
+ iomap->addr += EXT4_SB(inode->i_sb)->s_dax_part_off;
} else {
iomap->type = IOMAP_HOLE;
iomap->addr = IOMAP_NULL_ADDR;
if (ret < 0)
return ret;
out:
- ext4_set_iomap(inode, iomap, &map, offset, length);
+ ext4_set_iomap(inode, iomap, &map, offset, length, flags);
return 0;
}
delalloc = ext4_iomap_is_delalloc(inode, &map);
set_iomap:
- ext4_set_iomap(inode, iomap, &map, offset, length);
+ ext4_set_iomap(inode, iomap, &map, offset, length, flags);
if (delalloc && iomap->type == IOMAP_HOLE)
iomap->type = IOMAP_DELALLOC;
iomap->type = IOMAP_DELALLOC;
} else {
iomap->addr = BBTOB(xfs_fsb_to_db(ip, imap->br_startblock));
+ if (mapping_flags & IOMAP_DAX)
+ iomap->addr += target->bt_dax_part_off;
+
if (imap->br_state == XFS_EXT_UNWRITTEN)
iomap->type = IOMAP_UNWRITTEN;
else
iomap->type = IOMAP_MAPPED;
+
}
iomap->offset = XFS_FSB_TO_B(mp, imap->br_startoff);
iomap->length = XFS_FSB_TO_B(mp, imap->br_blockcount);
- iomap->bdev = target->bt_bdev;
- iomap->dax_dev = target->bt_daxdev;
+ if (mapping_flags & IOMAP_DAX)
+ iomap->dax_dev = target->bt_daxdev;
+ else
+ iomap->bdev = target->bt_bdev;
iomap->flags = iomap_flags;
if (xfs_ipincount(ip) &&