EXT4 only supports doing atomic write on inodes which uses extents, so
add a check in ext4_inode_can_atomic_write() which gets called during
open.
Reviewed-by: Ojaswin Mujoo <ojaswin@xxxxxxxxxxxxx>
Acked-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@xxxxxxxxx>
---
fs/ext4/ext4.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 5a20e9cd7184..c0240f6f6491 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -3847,7 +3847,9 @@ static inline int ext4_buffer_uptodate(struct buffer_head *bh)
static inline bool ext4_inode_can_atomic_write(struct inode *inode)
{
- return S_ISREG(inode->i_mode) && EXT4_SB(inode->i_sb)->s_awu_min > 0;
+ return S_ISREG(inode->i_mode) &&
+ ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS) &&
+ EXT4_SB(inode->i_sb)->s_awu_min > 0;
}
extern int ext4_block_write_begin(handle_t *handle, struct folio *folio,
--
2.49.0
