diff options
Diffstat (limited to 'drivers/mtd/ubi/ubi.h')
| -rw-r--r-- | drivers/mtd/ubi/ubi.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h index 922c1a3c8b..7d07bbf197 100644 --- a/drivers/mtd/ubi/ubi.h +++ b/drivers/mtd/ubi/ubi.h @@ -69,6 +69,17 @@ */ #define UBI_PROT_QUEUE_LEN 10 +/* + * Maximum difference between two erase counters. If this threshold is + * exceeded, the WL sub-system starts moving data from used physical + * eraseblocks with low erase counter to free physical eraseblocks with high + * erase counter. + * Extensive wear-leveling in the barebox can lead to stack overflows. Thus + * disable it by setting the threshold to the OS's max configurable value and + * leave wear-leveling to the OS. + */ +#define UBI_WL_THRESHOLD 65536 + /* The volume ID/LEB number/erase counter is unknown */ #define UBI_UNKNOWN -1 |