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ftl: change order of decrementing the used page count to be more logical

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This commit is contained in:
S.J.R. van Schaik 2017-10-03 13:33:45 +02:00
parent bea048006a
commit 0d1ffa71fb
1 changed files with 3 additions and 2 deletions
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5
source/ftl/ftl.c
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@ -175,8 +175,6 @@ int ftl_trim(struct ftl_map *map, uint32_t va)
return ret;
}
--map->nused_pages;
for (i = 0; i < 32; ++i) {
level = 32 - i - 1;
@ -186,6 +184,7 @@ int ftl_trim(struct ftl_map *map, uint32_t va)
if (i == 32) {
map->root = UINT32_MAX;
map->nused_pages = 0;
memset(&page_desc, 0xff, sizeof page_desc);
page_desc.nused_pages = 0;
@ -196,6 +195,8 @@ int ftl_trim(struct ftl_map *map, uint32_t va)
if (read_page_desc(map, &alt_page_desc, alt_page) < 0)
return -1;
--map->nused_pages;
page_desc.va = alt_page_desc.va;
page_desc.nused_pages = map->nused_pages;
page_desc.subtrees[level] = UINT32_MAX;