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| author |   Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2010-09-03 14:22:17 +0300 |
|---|---|---|
| committer | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2010-10-19 17:19:56 +0300 |
| commit | 92e1a7d9e7e07fb1cf0cbbcdf202938d0819b54d (patch) | |
| tree | 48930121fa2f1cf9ebd36f85118fe433d1ecd01f /fs/jbd2/commit.c | |
| parent | UBI: remove duplicate IO error codes (diff) | |
| download | wireguard-linux-92e1a7d9e7e07fb1cf0cbbcdf202938d0819b54d.tar.xz wireguard-linux-92e1a7d9e7e07fb1cf0cbbcdf202938d0819b54d.zip | |
UBI: handle bit-flips when no header found
Currently UBI has one small flaw - when we read EC or VID header, but find only
0xFF bytes, we return UBI_IO_FF and do not report whether we had bit-flips or
not. In case of the VID header, the scanning code adds this PEB to the free list,
even though there were bit-flips.
Imagine the following situation: we start writing VID header to a PEB and have a
power cut, so the PEB becomes unstable. When we scan and read the PEB, we get
a bit-flip. Currently, UBI would just ignore this and treat the PEB as free. This
patch changes UBI behavior and now UBI will schedule this PEB for erasure.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'fs/jbd2/commit.c')
0 files changed, 0 insertions, 0 deletions