1 files changed, 16 insertions, 12 deletions

diff --git a/source/blender/editors/space_file/filelist.c b/source/blender/editors/space_file/filelist.c
index 51a5c451f6d..b85dadf1f8e 100644
--- a/source/blender/editors/space_file/filelist.c
+++ b/source/blender/editors/space_file/filelist.c
@@ -1710,7 +1710,7 @@ static void filelist_cache_previews_push(FileList *filelist, FileDirEntry *entry
     return;
   }
 
-  if (entry->flags & FILE_ENTRY_INVALID_PREVIEW) {
+  if (entry->flags & (FILE_ENTRY_INVALID_PREVIEW | FILE_ENTRY_PREVIEW_LOADING)) {
     return;
   }
 
@@ -1741,6 +1741,7 @@ static void filelist_cache_previews_push(FileList *filelist, FileDirEntry *entry
   FileListEntryPreviewTaskData *preview_taskdata = MEM_mallocN(sizeof(*preview_taskdata),
                                                                __func__);
   preview_taskdata->preview = preview;
+  entry->flags |= FILE_ENTRY_PREVIEW_LOADING;
   BLI_task_pool_push(cache->previews_pool,
                      filelist_cache_preview_runf,
                      preview_taskdata,
@@ -1896,6 +1897,7 @@ static void filelist_clear_asset_library(FileList *filelist)
 {
   /* The AssetLibraryService owns the AssetLibrary pointer, so no need for us to free it. */
   filelist->asset_library = NULL;
+  file_delete_asset_catalog_filter_settings(&filelist->filter_data.asset_catalog_filter);
 }
 
 void filelist_clear_ex(struct FileList *filelist,
@@ -1995,7 +1997,6 @@ void filelist_free(struct FileList *filelist)
     filelist->selection_state = NULL;
   }
 
-  file_delete_asset_catalog_filter_settings(&filelist->filter_data.asset_catalog_filter);
   MEM_SAFE_FREE(filelist->asset_library_ref);
 
   memset(&filelist->filter_data, 0, sizeof(filelist->filter_data));
@@ -2659,24 +2660,27 @@ bool filelist_cache_previews_update(FileList *filelist)
 
     //      printf("%s: %d - %s - %p\n", __func__, preview->index, preview->path, preview->img);
 
-    if (preview->icon_id) {
-      /* Due to asynchronous process, a preview for a given image may be generated several times,
-       * i.e. entry->image may already be set at this point. */
-      if (entry && !entry->preview_icon_id) {
+    if (entry) {
+      entry->flags &= ~FILE_ENTRY_PREVIEW_LOADING;
+      if (preview->icon_id) {
+        /* The FILE_ENTRY_PREVIEW_LOADING flag should have prevented any other asynchronous
+         * process from trying to generate the same preview icon. */
+        BLI_assert_msg(!entry->preview_icon_id, "Preview icon should not have been generated yet");
+
         /* Move ownership over icon. */
         entry->preview_icon_id = preview->icon_id;
         preview->icon_id = 0;
         changed = true;
       }
       else {
-        BKE_icon_delete(preview->icon_id);
+        /* We want to avoid re-processing this entry continuously!
+         * Note that, since entries only live in cache,
+         * preview will be retried quite often anyway. */
+        entry->flags |= FILE_ENTRY_INVALID_PREVIEW;
       }
     }
-    else if (entry) {
-      /* We want to avoid re-processing this entry continuously!
-       * Note that, since entries only live in cache,
-       * preview will be retried quite often anyway. */
-      entry->flags |= FILE_ENTRY_INVALID_PREVIEW;
+    else {
+      BKE_icon_delete(preview->icon_id);
     }
 
     MEM_freeN(preview);