[PATCH 23/27] ext4: disable inode journal mode when using iomap buffered I/O path

[Zhang Yi]

From: Zhang Yi <yi.zhang@xxxxxxxxxx>

inode with data=journal mode will not support the iomap buffered I/O
path, so just disable this mode if EXT4_STATE_BUFFERED_IOMAP is set.

Signed-off-by: Zhang Yi <yi.zhang@xxxxxxxxxx>
---
 fs/ext4/ext4_jbd2.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/ext4/ext4_jbd2.c b/fs/ext4/ext4_jbd2.c
index da4a82456383..367a29babe09 100644
--- a/fs/ext4/ext4_jbd2.c
+++ b/fs/ext4/ext4_jbd2.c
@@ -16,7 +16,8 @@ int ext4_inode_journal_mode(struct inode *inode)
 	    ext4_test_inode_flag(inode, EXT4_INODE_EA_INODE) ||
 	    test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA ||
 	    (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA) &&
-	    !test_opt(inode->i_sb, DELALLOC))) {
+	    !test_opt(inode->i_sb, DELALLOC) &&
+	    !ext4_test_inode_state(inode, EXT4_STATE_BUFFERED_IOMAP))) {
 		/* We do not support data journalling for encrypted data */
 		if (S_ISREG(inode->i_mode) && IS_ENCRYPTED(inode))
 			return EXT4_INODE_ORDERED_DATA_MODE;  /* ordered */
-- 
2.46.1