g_mutex_lock(inode->fs->lock);
bluesky_list_unlink(&inode->fs->unlogged_list, inode->unlogged_list);
inode->unlogged_list = bluesky_list_prepend(&inode->fs->unlogged_list, inode);
- bluesky_list_unlink(&inode->fs->dirty_list, inode->dirty_list);
- inode->dirty_list = bluesky_list_prepend(&inode->fs->dirty_list, inode);
bluesky_list_unlink(&inode->fs->accessed_list, inode->accessed_list);
inode->accessed_list = bluesky_list_prepend(&inode->fs->accessed_list, inode);
g_mutex_unlock(inode->fs->lock);
-
- bluesky_cloudlog_unref(inode->committed_item);
- inode->committed_item = NULL;
}
/* Unfortunately a glib hash table is only guaranteed to be able to store
fs->flushd_cond = g_cond_new();
fs->locations = g_hash_table_new(bluesky_cloudlog_hash,
bluesky_cloudlog_equal);
+ fs->inode_map = g_sequence_new(NULL);
fs->log_state = g_new0(BlueSkyCloudLogState, 1);
fs->log_state->data = g_string_new("");
BlueSkyFS *bluesky_init_fs(gchar *name, BlueSkyStore *store)
{
- BlueSkyRCStr *data = bluesky_store_get(store, "superblock");
- if (data != NULL) {
- BlueSkyFS *fs = bluesky_deserialize_superblock(data->data);
- if (fs != NULL) {
- fs->store = store;
- fs->log = bluesky_log_new("journal");
- fs->log->fs = fs;
- g_print("Loaded filesystem superblock\n");
- g_free(fs->name);
- fs->name = g_strdup(name);
- return fs;
- }
- bluesky_string_unref(data);
- }
-
g_print("Initializing fresh filesystem\n");
BlueSkyFS *fs = bluesky_new_fs(name);
fs->store = store;
bluesky_insert_inode(fs, root);
bluesky_inode_update_ctime(root, TRUE);
+ bluesky_replay(fs);
+
bluesky_inode_do_sync(root);
- bluesky_superblock_flush(fs);
return fs;
}
g_atomic_int_inc(&inode->refcount);
}
+/* Free most of the resources used by an inode structure, but do not free the
+ * inode itself. Can be used if the inode data will be reloaded from
+ * serialized form to clear out old information first. */
+void bluesky_inode_free_resources(BlueSkyInode *inode)
+{
+ switch (inode->type) {
+ case BLUESKY_REGULAR:
+ if (inode->blocks != NULL) {
+ for (int i = 0; i < inode->blocks->len; i++) {
+ BlueSkyBlock *b = &g_array_index(inode->blocks,
+ BlueSkyBlock, i);
+ if (b->type == BLUESKY_BLOCK_DIRTY) {
+ g_error("Deleting an inode with dirty file data!");
+ }
+ bluesky_cloudlog_unref(b->ref);
+ bluesky_string_unref(b->dirty);
+ }
+ g_array_unref(inode->blocks);
+ inode->blocks = NULL;
+ }
+ break;
+
+ case BLUESKY_DIRECTORY:
+ if (inode->dirhash != NULL)
+ g_hash_table_destroy(inode->dirhash);
+ inode->dirhash = NULL;
+ if (inode->dirhash_folded != NULL)
+ g_hash_table_destroy(inode->dirhash_folded);
+ inode->dirhash_folded = NULL;
+ if (inode->dirents != NULL)
+ g_sequence_free(inode->dirents);
+ inode->dirents = NULL;
+ break;
+
+ case BLUESKY_SYMLINK:
+ g_free(inode->symlink_contents);
+ inode->symlink_contents = NULL;
+ break;
+
+ default:
+ break;
+ }
+}
+
void bluesky_inode_unref(BlueSkyInode *inode)
{
if (g_atomic_int_dec_and_test(&inode->refcount)) {
bluesky_list_unlink(&inode->fs->unlogged_list, inode->unlogged_list);
g_mutex_unlock(inode->fs->lock);
- /* Free file type specific data. It should be an error for there to be
- * dirty data to commit when the reference count has reaches zero. */
- switch (inode->type) {
- case BLUESKY_REGULAR:
- for (int i = 0; i < inode->blocks->len; i++) {
- BlueSkyBlock *b = &g_array_index(inode->blocks,
- BlueSkyBlock, i);
- if (b->type == BLUESKY_BLOCK_DIRTY) {
- g_error("Deleting an inode with dirty file data!");
- }
- bluesky_cloudlog_unref(b->ref);
- bluesky_string_unref(b->dirty);
- }
- g_array_unref(inode->blocks);
- break;
-
- case BLUESKY_DIRECTORY:
- g_hash_table_destroy(inode->dirhash);
- g_hash_table_destroy(inode->dirhash_folded);
- g_sequence_free(inode->dirents);
- break;
-
- case BLUESKY_SYMLINK:
- g_free(inode->symlink_contents);
- break;
-
- default:
- break;
- }
+ bluesky_inode_free_resources(inode);
g_mutex_free(inode->lock);
-
g_free(inode);
}
}
inum = fs->next_inum;
fs->next_inum++;
- bluesky_superblock_flush(fs);
-
return inum;
}
g_mutex_lock(inode->fs->lock);
bluesky_list_unlink(&inode->fs->unlogged_list, inode->unlogged_list);
inode->unlogged_list = NULL;
+
+ /* Since a new version of the inode has been written to the log, also
+ * schedule a future flush of the new data to cloud storage. */
+ bluesky_list_unlink(&inode->fs->dirty_list, inode->dirty_list);
+ inode->dirty_list = bluesky_list_prepend(&inode->fs->dirty_list, inode);
+ inode->change_cloud = inode->change_count;
+
g_mutex_unlock(inode->fs->lock);
}
"Completing fetch of inode %"PRIu64"...", inode->inum);
}
- if (async->result != 0
- || !bluesky_deserialize_inode(inode, async->data->data))
+ if (async->result != 0 || FALSE)
{
if (bluesky_verbose) {
g_log("bluesky/inode", G_LOG_LEVEL_DEBUG,
bluesky_store_async_unref(async);
}
-
-/* Synchronize filesystem superblock to stable storage. */
-void bluesky_superblock_flush(BlueSkyFS *fs)
-{
-#if 0
- GString *buf = g_string_new("");
- bluesky_serialize_superblock(buf, fs);
- BlueSkyRCStr *data = bluesky_string_new_from_gstring(buf);
-
- BlueSkyStoreAsync *async = bluesky_store_async_new(fs->store);
- async->op = STORE_OP_PUT;
- async->key = g_strdup("superblock");
- async->data = data;
- bluesky_store_async_submit(async);
- bluesky_store_async_unref(async);
-
- //bluesky_store_sync(fs->store);
-#endif
-}
projects / bluesky.git / blobdiff