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| author |   Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2008-04-19 20:44:31 +0300 |
|---|---|---|
| committer | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2008-04-19 20:49:41 +0300 |
| commit | 4bc1dca4b0eb4dfbf100895bfc1256f21e3c901a (patch) | |
| tree | 4ccfc207a0b55cfad4247f49bd1bce03d5034560 /drivers/mtd/ubi/scan.h | |
| parent | UBI: initialize static volumes with vol->used_bytes (diff) | |
| download | linux-dev-4bc1dca4b0eb4dfbf100895bfc1256f21e3c901a.tar.xz linux-dev-4bc1dca4b0eb4dfbf100895bfc1256f21e3c901a.zip | |
UBI: fix mean EC calculation
(a + b) / (c + d) != a / c + b / d. The old code errornously
assumed this incorrect formuld. Instead, just sum all erase
counters in a 64-bit variable and divide to the number of EBs
at the end.
Thanks to Adrian Hunter for pointing this out.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'drivers/mtd/ubi/scan.h')
| -rw-r--r-- | drivers/mtd/ubi/scan.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mtd/ubi/scan.h b/drivers/mtd/ubi/scan.h index 46d444af471a..966b9b682a42 100644 --- a/drivers/mtd/ubi/scan.h +++ b/drivers/mtd/ubi/scan.h @@ -124,7 +124,7 @@ struct ubi_scan_info { int max_ec; unsigned long long max_sqnum; int mean_ec; - int ec_sum; + uint64_t ec_sum; int ec_count; }; |