Little note for future - it is good practice to quote significant parts (or present them in separate file), while adding whole syslog just for refference - it's no fun to search through n thousands of lines, to find one you've described. What I mean, is presenting quote of things you see as important, + whole log as additional thing, in case you might be wrong about what's important
Also, as you noticed, other filesystems on microSD doesn't impact swap at all. It doesn't matter, for that purpose, if you're using ext4, vfat, or even swap itself, as /dev/mmcblk1p1 (first partition).