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@@ -24,8 +24,13 @@ config MTD_UBI_WL_THRESHOLD
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erase counter value and the lowest erase counter value of eraseblocks
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of UBI devices. When this threshold is exceeded, UBI starts performing
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wear leveling by means of moving data from eraseblock with low erase
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- counter to eraseblocks with high erase counter. Leave the default
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- value if unsure.
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+ counter to eraseblocks with high erase counter.
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+
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+ The default value should be OK for SLC NAND flashes, NOR flashes and
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+ other flashes which have eraseblock life-cycle 100000 or more.
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+ However, in case of MLC NAND flashes which typically have eraseblock
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+ life-cycle less then 10000, the threshold should be lessened (e.g.,
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+ to 128 or 256, although it does not have to be power of 2).
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config MTD_UBI_BEB_RESERVE
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int "Percentage of reserved eraseblocks for bad eraseblocks handling"
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Artem Bityutskiy