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ftl: compute length after determining the offset

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This commit is contained in:
S.J.R. van Schaik 2017-05-26 16:10:12 +02:00
parent 631cc1e33a
commit 7172423f05
1 changed files with 1 additions and 2 deletions
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3
source/ftl/ftl.c
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@ -28,11 +28,10 @@ size_t ftl_read(struct ftl_map *map, void *data, size_t len, uint32_t va)
if (!data)
return 0;
len = min(len, (1 << map->log2_page_size) - offset);
mask = ((1 << map->log2_page_size) - 1);
offset = va & mask;
va >>= map->log2_page_size;
len = min(len, (1 << map->log2_page_size) - offset);
if ((ret = trace_path(map, NULL, &page, va)) < 0) {
memset(data, 0, len);