Searched hist:"92 e1a7d9" (Results 1 – 3 of 3) sorted by relevance
/openbmc/linux/drivers/mtd/ubi/ |
H A D | io.c | 92e1a7d9 Fri Sep 03 06:22:17 CDT 2010 Artem Bityutskiy <Artem.Bityutskiy@nokia.com> 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> 92e1a7d9 Fri Sep 03 06:22:17 CDT 2010 Artem Bityutskiy <Artem.Bityutskiy@nokia.com> 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>
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H A D | ubi.h | 92e1a7d9 Fri Sep 03 06:22:17 CDT 2010 Artem Bityutskiy <Artem.Bityutskiy@nokia.com> 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> 92e1a7d9 Fri Sep 03 06:22:17 CDT 2010 Artem Bityutskiy <Artem.Bityutskiy@nokia.com> 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>
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H A D | wl.c | 92e1a7d9 Fri Sep 03 06:22:17 CDT 2010 Artem Bityutskiy <Artem.Bityutskiy@nokia.com> 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> 92e1a7d9 Fri Sep 03 06:22:17 CDT 2010 Artem Bityutskiy <Artem.Bityutskiy@nokia.com> 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>
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