diff options
Diffstat (limited to 'fs/btrfs/scrub.c')
| -rw-r--r-- | fs/btrfs/scrub.c | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index cb308a3..63144e4 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -2126,8 +2126,7 @@ static int scrub_find_csum(struct scrub_ctx *sctx, u64 logical, u64 len, u8 *csum) { struct btrfs_ordered_sum *sum = NULL; - int ret = 0; - unsigned long i; + unsigned long index; unsigned long num_sectors; while (!list_empty(&sctx->csum_list)) { @@ -2146,19 +2145,14 @@ static int scrub_find_csum(struct scrub_ctx *sctx, u64 logical, u64 len, if (!sum) return 0; + index = ((u32)(logical - sum->bytenr)) / sctx->sectorsize; num_sectors = sum->len / sctx->sectorsize; - for (i = 0; i < num_sectors; ++i) { - if (sum->sums[i].bytenr == logical) { - memcpy(csum, &sum->sums[i].sum, sctx->csum_size); - ret = 1; - break; - } - } - if (ret && i == num_sectors - 1) { + memcpy(csum, sum->sums + index, sctx->csum_size); + if (index == num_sectors - 1) { list_del(&sum->list); kfree(sum); } - return ret; + return 1; } /* scrub extent tries to collect up to 64 kB for each bio */ |
