ext4: don't track ranges in fast_commit if inode has inlined data

[ Upstream commit 7882b018 ]

When fast-commit needs to track ranges, it has to handle inodes that have
inlined data in a different way because ext4_fc_write_inode_data(), in the
actual commit path, will attempt to map the required blocks for the range.
However, inodes that have inlined data will have it's data stored in
inode->i_block and, eventually, in the extended attribute space.

Unfortunately, because fast commit doesn't currently support extended
attributes, the solution is to mark this commit as ineligible.

Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1039883


Signed-off-by: Luis Henriques (SUSE) <luis.henriques@linux.dev>
Tested-by: Ben Hutchings <benh@debian.org>
Fixes: 9725958b ("ext4: fast commit may miss tracking unwritten range during ftruncate")
Link: https://patch.msgid.link/20240618144312.17786-1-luis.henriques@linux.dev


Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>