IOMAP_F_MERGED needs to be set in case of non-extent based mapping. This is also needed for conversion of fiemap to use iomap. Signed-off-by: Ritesh Harjani <riteshh@xxxxxxxxxxxxx> --- fs/ext4/inode.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index d035acab5b2a..3b4230cf0bc2 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3335,6 +3335,10 @@ static void ext4_set_iomap(struct inode *inode, struct iomap *iomap, iomap->offset = (u64) map->m_lblk << blkbits; iomap->length = (u64) map->m_len << blkbits; + if ((map->m_flags & (EXT4_MAP_UNWRITTEN | EXT4_MAP_MAPPED)) && + !ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) + iomap->flags |= IOMAP_F_MERGED; + /* * Flags passed to ext4_map_blocks() for direct I/O writes can result * in m_flags having both EXT4_MAP_MAPPED and EXT4_MAP_UNWRITTEN bits -- 2.21.0
