ext4: allow the dax flag to be set and cleared on inline directories
This is needed to allow generic/607 to pass for file systems with the
inline data_feature enabled, and it allows the use of file systems
where the directories use inline_data, while the files are accessed
via DAX.
Cc: stable@kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index a2cf350..0796bfa 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -315,6 +315,12 @@ static void ext4_dax_dontcache(struct inode *inode, unsigned int flags)
static bool dax_compatible(struct inode *inode, unsigned int oldflags,
unsigned int flags)
{
+ /* Allow the DAX flag to be changed on inline directories */
+ if (S_ISDIR(inode->i_mode)) {
+ flags &= ~EXT4_INLINE_DATA_FL;
+ oldflags &= ~EXT4_INLINE_DATA_FL;
+ }
+
if (flags & EXT4_DAX_FL) {
if ((oldflags & EXT4_DAX_MUT_EXCL) ||
ext4_test_inode_state(inode,