When triggering thaw-filesystems via magic sysrq, the system freezes. It is due to an error in thaw_bdev() for which I sent a patch in august 2015, but the patch has not been applied and the problem remains.
Since the original subject "always return an error..." may be confusing, I changed the subject line and rebased the patch on Linux 4.8-rc8. Pierre Morel (1): fs/block_dev.c: return the right error in thaw_bdev() fs/block_dev.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) -- 2.5.0