fat: Switch to generic_buffers_fsync_noflush()
FAT uses a list of metadata bhs attached to an inode. Switch it to use
generic_buffers_fsync_noflush() instead of __generic_file_fsync() as
we'll be removing metadata bh handling from __generic_file_fsync().
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20260326095354.16340-54-jack@suse.cz
Signed-off-by: Christian Brauner <brauner@kernel.org>
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