c77b52c0a137 ("gfs2: Add common helper for holding and releasing the freeze glock")
c860f8ffbea8 ("gfs2: The freeze glock should never be frozen")
623ba664b74a ("gfs2: When freezing gfs2, use GL_EXACT and not GL_NOCACHE")
b780cc615ba4 ("gfs2: read-only mounts should grab the sd_freeze_gl glock")