X-Git-Url: http://git.vrable.net/?a=blobdiff_plain;f=bluesky%2Finode.c;h=4a158c711eda13e0fd8f2708cd1bcbea85d799a8;hb=f57fa12ec60108a9338ca5c5c072ec6e0ea1b745;hp=a264f350c24cee4115d29c7980502f75742a8e9d;hpb=a4e456f91da9819e5a1517d4e505816bb4aa1007;p=bluesky.git

diff --git a/bluesky/inode.c b/bluesky/inode.c
index a264f35..4a158c7 100644
--- a/bluesky/inode.c
+++ b/bluesky/inode.c
@@ -29,7 +29,8 @@ int64_t bluesky_get_current_time()
 
 /* Update an inode to indicate that a modification was made.  This increases
  * the change counter, updates the ctime to the current time, and optionally
- * updates the mtime.  inode must already be locked. */
+ * updates the mtime.  This also makes the inode contents subject to writeback
+ * to storage in the future.  inode must already be locked. */
 void bluesky_inode_update_ctime(BlueSkyInode *inode, gboolean update_mtime)
 {
     int64_t now = bluesky_get_current_time();
@@ -40,6 +41,9 @@ void bluesky_inode_update_ctime(BlueSkyInode *inode, gboolean update_mtime)
 
     if (inode->change_time == 0)
         inode->change_time = now;
+
+    if (bluesky_options.writethrough_cache)
+        bluesky_file_flush(inode, NULL);
 }
 
 /* Unfortunately a glib hash table is only guaranteed to be able to store
@@ -144,6 +148,7 @@ BlueSkyInode *bluesky_new_inode(uint64_t inum, BlueSkyFS *fs,
     i->type = type;
     i->fs = fs;
     i->inum = inum;
+    i->change_count = 1;
 
     switch (type) {
     case BLUESKY_REGULAR:
@@ -200,7 +205,7 @@ void bluesky_insert_inode(BlueSkyFS *fs, BlueSkyInode *inode)
     g_hash_table_insert(fs->inodes, &inode->inum, inode);
 }
 
-/* Synchronize an inode to stable storage. */
+/* Deprecated: Synchronize an inode to stable storage. */
 void bluesky_inode_flush(BlueSkyFS *fs, BlueSkyInode *inode)
 {
     GString *buf = g_string_new("");
@@ -218,6 +223,31 @@ void bluesky_inode_flush(BlueSkyFS *fs, BlueSkyInode *inode)
     bluesky_store_async_unref(async);
 }
 
+/* Start writeback of an inode and all associated data. */
+void bluesky_inode_start_sync(BlueSkyInode *inode, BlueSkyStoreAsync *barrier)
+{
+    BlueSkyFS *fs = inode->fs;
+
+    GString *buf = g_string_new("");
+    bluesky_serialize_inode(buf, inode);
+    BlueSkyRCStr *data = bluesky_string_new_from_gstring(buf);
+
+    if (inode->type == BLUESKY_REGULAR)
+        bluesky_file_flush(inode, barrier);
+
+    char key[64];
+    sprintf(key, "inode-%016"PRIx64, inode->inum);
+
+    BlueSkyStoreAsync *async = bluesky_store_async_new(fs->store);
+    async->op = STORE_OP_PUT;
+    async->key = g_strdup(key);
+    async->data = data;
+    bluesky_store_async_submit(async);
+    if (barrier != NULL)
+        bluesky_store_add_barrier(barrier, async);
+    bluesky_store_async_unref(async);
+}
+
 /* Fetch an inode from stable storage. */
 void bluesky_inode_fetch(BlueSkyFS *fs, uint64_t inum)
 {