tree abd269a573e5ffce8b7e92c39cc3000ca1ecb944
parent 782759b9f5f5223e0962af60c3457c912fab755f
author Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com> 1342264786 +0300
committer Artem Bityutskiy <artem.bityutskiy@linux.intel.com> 1342769245 +0300

UBIFS: add debugfs knob to switch to R/O mode

This patch adds another debugfs knob which switches UBIFS to R/O mode.
I needed it while trying to reproduce the 'first log node is not CS node'
bug. Without this debugfs knob you have to perform a power cut to repruduce
the bug. The knob is named 'ro_error' and all it does is it sets the
'ro_error' UBIFS flag which makes UBIFS disallow any further writes - even
write-back will fail with -EROFS. Useful for debugging.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>