ext4: convert ext4_da_do_write_end() to take a folio

[ Upstream commit 4d5cdd75 ]

There's nothing page-specific happening in ext4_da_do_write_end();
it's merely used for its refcount & lock, both of which are folio
properties.  Saves four calls to compound_head().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20231214053035.1018876-1-willy@infradead.org


Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Stable-dep-of: 83f4414b ("ext4: sanity check for NULL pointer after ext4_force_shutdown")
Signed-off-by: Sasha Levin <sashal@kernel.org>