[Qemu-devel] [PATCH 2/2] xbzrle: Drop unused cache_resize()

[Markus Armbruster]

Unused since commit fd8cec XBZRLE: Fix qemu crash when resize the
xbzrle cache.

Signed-off-by: Markus Armbruster <address@hidden>
---
 include/migration/page_cache.h | 11 ---------
 page_cache.c                   | 56 ------------------------------------------
 2 files changed, 67 deletions(-)

diff --git a/include/migration/page_cache.h b/include/migration/page_cache.h
index 10ed532..4fadd0c 100644
--- a/include/migration/page_cache.h
+++ b/include/migration/page_cache.h
@@ -72,15 +72,4 @@ uint8_t *get_cached_data(const PageCache *cache, uint64_t 
addr);
 int cache_insert(PageCache *cache, uint64_t addr, const uint8_t *pdata,
                  uint64_t current_age);
 
-/**
- * cache_resize: resize the page cache. In case of size reduction the extra
- * pages will be freed
- *
- * Returns -1 on error new cache size on success
- *
- * @cache pointer to the PageCache struct
- * @num_pages: new page cache size (in pages)
- */
-int64_t cache_resize(PageCache *cache, int64_t num_pages);
-
 #endif
diff --git a/page_cache.c b/page_cache.c
index cf8878d..a00a3d9 100644
--- a/page_cache.c
+++ b/page_cache.c
@@ -188,59 +188,3 @@ int cache_insert(PageCache *cache, uint64_t addr, const 
uint8_t *pdata,
 
     return 0;
 }
-
-int64_t cache_resize(PageCache *cache, int64_t new_num_pages)
-{
-    PageCache *new_cache;
-    int64_t i;
-
-    CacheItem *old_it, *new_it;
-
-    g_assert(cache);
-
-    /* cache was not inited */
-    if (cache->page_cache == NULL) {
-        return -1;
-    }
-
-    /* same size */
-    if (pow2floor(new_num_pages) == cache->max_num_items) {
-        return cache->max_num_items;
-    }
-
-    new_cache = cache_init(new_num_pages, cache->page_size);
-    if (!(new_cache)) {
-        DPRINTF("Error creating new cache\n");
-        return -1;
-    }
-
-    /* move all data from old cache */
-    for (i = 0; i < cache->max_num_items; i++) {
-        old_it = &cache->page_cache[i];
-        if (old_it->it_addr != -1) {
-            /* check for collision, if there is, keep MRU page */
-            new_it = cache_get_by_addr(new_cache, old_it->it_addr);
-            if (new_it->it_data && new_it->it_age >= old_it->it_age) {
-                /* keep the MRU page */
-                g_free(old_it->it_data);
-            } else {
-                if (!new_it->it_data) {
-                    new_cache->num_items++;
-                }
-                g_free(new_it->it_data);
-                new_it->it_data = old_it->it_data;
-                new_it->it_age = old_it->it_age;
-                new_it->it_addr = old_it->it_addr;
-            }
-        }
-    }
-
-    g_free(cache->page_cache);
-    cache->page_cache = new_cache->page_cache;
-    cache->max_num_items = new_cache->max_num_items;
-    cache->num_items = new_cache->num_items;
-
-    g_free(new_cache);
-
-    return cache->max_num_items;
-}
-- 
1.9.3